ERBE - numlor.fr · Service manual ERBE ICC 200 ICC 300 H-E ICC 350 09.2004

Serv

ice

man

ual

ERBE

ICC 200

ICC 300 H-E

ICC 350

09.2004

ICC 200, ICC 300 H-E, ICC 350

SERVICE MANUAL

09.2004

10128-002, 10128-009, 10128-010, 10128-015, 10128-016

10128-023, 10128-025, 10128-027, 10128-028, 10128-036

10128-051, 10128-054, 10128-055, 10128-056, 10128-058

10128-061, 10128-064, 10128-065, 10128-066, 10128-070

10128-071, 10128-072, 10128-073, 10128-074, 10128-075

10128-076, 10128-077, 10128-078, 10128-080, 10128-081

10128-082, 10128-083, 10128-200, 10128-202, 10128-204

10128-205, 10128-206, 10128-213, 10128-214, 10128-300

10128-301, 10128-303, 10128-304, 10128-305, 10128-306

10128-307,10128-310, 10128-403

All rights to this service manual, particularly the right to reproduction, distribution and translation,are reserved. No part of this service manual may be reproduced in any form (including photocopying,microfilm or other means), or processed, reproduced or distributed by means of electronic systemswithout prior written permission from ERBE Elektromedizin GmbH.

The information contained in this service manual may be revised or extended without prior noticeand represents no obligation on the part of ERBE Elektromedizin GmbH.

Copyright © ERBE Elektromedizin GmbH, Tübingen 2004

Printed by: ERBE Elektromedizin GmbH, Tübingen Art. No.: 80116-201

Printed in Germany

Please contact me directly with yoursuggestions, criticism or informationregarding this manual. Your feedbackhelps me design this documentaccording to your requirements and toconstantly improve it.

This service manual was created by

Michael GrosseDipl.-Phys. (Physicist)

Tel (+49) 70 71 / 755–254Fax (+49) 70 71 / 755–5254E-Mail [email protected]

Net http://www.erbe-med.de

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Contents

Chapter Title Page

0 Table of contents ...................................................................................5

1 Test programs and adjustments ..........................................................7Calling up Test program mode ....................................................................... 10

Basic settings of the SETUP parameters ........................................................ 11

Front panel of the ICC 200 (INT) after starting up the unit ......................... 12

Front panel of the ICC 200 (UL) after starting up the unit .......................... 13

Front panel of the ICC 300 after starting up the unit ................................... 15

Front panel of the ICC 350 after starting up the unit ................................... 16

Test programs 1–8 ........................................................................................... 17

Test program 9 (Display programs 1–12) ..................................................... 28

Test programs 10–15 ....................................................................................... 39

Test program 16 (Adjustments, measuring equipment, jumper) ................. 45

Adjustment of ZMK Neurotest and TUR Neurotest ................................... 105

Adjustment of remote control for Neurotest ............................................... 111

Adjustment of activation and instrument detection .................................... 115

Test program 17, 23 ....................................................................................... 123

2 ERROR list ......................................................................................... 127

3 Circuit description .............................................................................137

4 Block diagrams .................................................................................. 169

5 Circuit diagrams ................................................................................. 175

A Appendix A (Part numbers, PCB arrangement) .............................. 241

B Appendix B (Abbreviations, notes, addresses) .............................. 263

6 / 266

Chapter 1Test programsand

adjustments

1 TEST PROGRAMS AND ADJUSTMENTS 9 / 266

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Test programsERBOTOM ICC 350, 300, 200Version 4.0 / 3.0 / 2.0

No. Test program function V 4.0 / 3.0 / V 2.0

1 Basic front panel setting (only ICC 300 and 200) x

2 Calls up the Error list x

3 Test of all D-flipflop circuit memories x

4 Test of all front panel visual signals x

5 Test of all acoustic signals x

6 Test of all relays x

7 NESSY: Version number setting x

8 Display of software version no. and option no. x

9 Activation of display programs x

10 Time limit setup x

11Measurement and display of extra-low voltages +15 volts, –15 volts,+24 volts and the temperature

x

12 Setting the FORCED voltage (2.0: 3 x forced; 4.0: 4 x forced) x

13 not assigned

14 not assigned

15 not assigned

16 Test and setting help for all unit calibration functions x

17 Brightness setting for the seven-segment displays x

18 not assigned

19 not assigned

20 not assigned

21 not assigned

22 not assigned

23 AUTO START start delay setup x

1 TEST PROGRAMS AND ADJUSTMENTS10 / 266

Calling up theTEST PROGRAM mode

Note regarding the drawing

The front panel shown of the ICC 350 applies to the ICC 200 and ICC 300 in such a way that only theAUTO CUT and AUTO COAG control panels apply to the ICC 300, and the AUTO CUT, AUTO COAGand AUTO BIPOLAR control panels apply to the ICC 300.

Calling up

Press key 3 (Roll) when switching on the power and hold it down.

Setting the test program number

Using keys 8 (Up) or 9 (Down), set the required program number.

Starting and finishing test programs

By pressing key 3 (Roll), start or finish a test program.

Exiting the test program mode

Exit the TEST PROGRAM MODE by switching off the power or setting TEST PROGRAM no. 0 using key 9(Down).

4 1185 9 12 1573 16

��

1 2

14


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Basic settings of the SETUPparametersERBOTOM ICC 350, 300 and 200

*) || means a split NE electrode,

| means a non-split NE electrode,

| || means both split and non-split NE electrode are possible.

AUTO START delayICC 350, ICC 300

Autostart stage Basic settings Remarks

0 0 sadjustable usingTest program 23

1 0.5 s

2 1 s

AUTO START delayICC 200 no stepping 0.5 s

Time limit settingICC 350 output max. time limit Test program 10

Auto Cut 90 s

Auto Coag 1 90 s

Auto Coag 2 90 s

Auto Bipolar 90 s

NESSY version no. NE 1 | || *) adjustable usingTest program 7

FORCED voltage version 1adjustable usingTest program 12

Brightness of theseven-segment display

10adjustable usingTest program 17


Front panel of the ICC 200 (INT)After starting up the unitFactory setting

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htiw002CCIgnittescisaBnoitpoTUCODNE

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Front panel of the ICC 200 (UL)After starting up the unitFactory programming

gnimmargorpcisaBnoitpoTUCODNEtuohtiw002CCI

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NOTE

If the settings are reset, the factory programming of the ICC 200 E and ICC 200 E/A units is lost.It can be restored using the following table.

gnimmargorpcisaBA/E002CCIdnaE002CCI

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Front panel of the ICC 300After starting up the unitFactory setting

Basic setting ICC 300

AUTO CUT Effect 3 150 watts max.

AUTO COAG SOFT 60 watts max.

AUTO BIPOLAR AUTO START = off 60 watts max.

Footswitch setting yellow = AUTO CUT blue = AUTO COAG


Front panel of the ICC 350After starting up the unitFactory setting

Basic setting ICC 350

AUTO CUT Effect 3 150 watts max.

HIGH CUT switched off –

AUTO COAG 1 SOFT 60 watts max.

AUTO COAG 2 FORCED 60 watts max.

AUTO BIPOLARAUTO START = offAUTO STOP = off

40 watts max.

Footswitch setting yellow = AUTO CUT blue = AUTO COAG 2


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Test program no. 1ICC 200, 300 only

General description

Using this test program, any front panel setting can be made. This setting is known as the basic setting.After termination, the basic setting is stored internally. Only completely saved channels are stored. Thebasic setting display flashes. Acknowledge by pressing any key.

Termination

Using “Power off”.

Switch off a channel

Using the “Down” key (8), set the lowest intensity. Once the lowest display is set, the seven-segmentdisplay changes to “---”. This means that the channel has been switched off.

Basic setting and brief power failure

For a brief power failure of 15 seconds max., the front panel setting last set is displayed.

Activation of a channel is blocked if a channel has not been completely set or the basic setting was notacknowledged.

The basic setting set at the factory corresponds to the FIXE basic setting.

FIXE basic setting

A FIXE basic setting is stored in the program. This basic setting is accepted and displayed if:

• the stored front panel setting is invalid, e.g. through failure of the circuit memory or through batterymemory lost,

• in Test program 1, the “All off” setting has been accepted.


Test program no. 2Call up and display of the error memory

General description

The ICC units are equipped with a system for error detection, error indication and error memory. Every errorreceives an error number (ERROR no.). The unit stores the last 10 ERROR numbers. Test program 2 displaysthe stored ERROR numbers. The most recent error occurring chronologically is in memory location 1.

Display

AUTO CUT AUTO COAG 1 AUTO COAG 2 AUTO BIPOLAR

Err. 1 ... 10 xxx

xxx: Display of the error number

By pressing keys 8 (Up) or 9 (Down), you can call up the memory locations one after another. By pressingkey 7, you delete the error numbers at all memory locations.

Example

After starting the test program with key 3, for example, Error no. 2 appears at memory location 1 with thefollowing display:

Display


Err. 1 2


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Test program no. 3Test of all D-flipflop circuit memories

*) buS is the seven-segment display for the word „BUS“.

General description

Test of all D-flipflop (D-FF) circuit memories. After starting the test with key 3, you will see the following display:

Display(ICC 350, ICC 300)


buS *) 0 d0 ... d7 alternating

Display(ICC 200)

buS d0 ... d7 alternating

buS*) (D-FF-Test Nr. 0) tests the external control bus for signal lines d0–d7. The signal lines d0–d7 areswitched on and off one after another. The switching statuses can be displayed on the bar graph (adapterboard 30183-102).

Using the keys 8 (Up) or 9 (Down), you can call up D-FF tests 1-11. You will see the following display:

Display(ICC 350, ICC 300)


dFF 1 ... 11 d0 ... d7 alternating

Display(ICC 200)

dFF 1 ... 9 d0 ... d7 alternating

The D-FF signal lines d0-d7 are switched on and off one after another. The signals can be measured at theD-FF outputs. There is an error if

• there is more than one output status at the same time,

• there is constantly an output signal in spite of switching over,

• there is no output signal in spite of D-FF activation.


Overview of the D-flipflop tests

Test no. D-FF description Position Remarks

0 external control bus Motherboard

1 D-FF IC 2 Motherboard

2 D-FF IC 3 Motherboard

3 D-FF IC 9 Extra-low voltage and tone

4 D-FF IC 19 Control board

5 D-FF IC 20 Control board

6 D-FF IC 6 ST power stage

7 D-FF IC 10 Senso-board

8 D-FF IC 8 Relay board not ICC 200

9 Extension motherboard slot J9 not ICC 200



Test program no. 3Test of all D-flipflop circuit memories


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Test program no. 4Check of the optical signals on the frontpanel

General description

Using this program, you can test the optical displays on the front panel. After starting the test program, youwill see the following display:

All optical signals on the front panel are switched on. The 7-segment displays show “8.” for all numbers.


Test program no. 5Sound control for all available sounds

General description

Using this program, you can test and set all available sounds. After starting the program, you will see thefollowing display:

Display


ton 0 ... 4

Using the keys 8 (Up) or 9 (Down), you can set a test number from 0 to 4. The following correspondenceapplies between the test numbers and the sounds:

Test no. Tones switched on Tone variants Remarks

0Tone generationswitched off

1 Basic tone 1 Volume adjustable




Basic tone 1 to 3 Volume adjustable

Mixed tone: Basic tone 1 and 2 Volume adjustable



Basic tone 1 to 3 Alarm volume

Mixed tone: Basic tone 1 and 2 Alarm volume




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Test program no. 5Sound control for all available sounds

Frequency adjustment for warning tones

The warning tone frequency setting can be adjusted independently of other assemblies on the low-voltagepower supply (jumper J2) with Test program no. 5.

• Activate Test program no. 5. MP 4 is GND for frequency counter.

• Call »Tone 1«: Set frequency at MP 1 with TP 2 to 493 Hz (±2 Hz) with frequency counter.



• To check settings the various tones and mixed tones are generated one after the other by calling»Tone 4«. Here, take especial care that the operating and warning tones have different volumes.


Test program no. 6Relay test

General description

Using this program, all relays can be actuated. The NESSY measurement monitor is switched off. Afterending the test program, relay no. 1 is switched on for the power starting current limitation.

Test program no. 6 is also intended for safety testing of the unit. With this test, there may be a brieffailure of the power supply due to the external intervention. If the test program is activated, the testprogram is automatically called up again after a brief power failure of up to approx. 15 seconds. However,if the power failure is longer than 15 seconds, this will not occur.

After starting the test program, you will see the following display:

Display


rEL 0 ... 1

Designation of the PCBs with their assigned relays

PCB Slot Relay function Remarks

Motherboard ICC 350 – see lines 3 and 4

Motherboard ICC 200 – see lines 3 and 4

Motherboard – Rel. 1: Power starting current limitation

Motherboard – Rel. 2: Capacitance ground only for ICC 350

Power module J5 Rel. 1: Switchover ST generator: HF

ST power stage J6 Rel. 1: Output HF: UE1 to NE

ST power stage J6 Rel. 2: Output HF: Rel. 3 to AE

ST power stage J6 Rel. 3: Output HF: UE1 to AE

ST power stage J6 Rel. 19: Connection to power supply

Senso-board J7 Rel. 1: Output NE - NESSY

Senso-board J7 Rel. 2: Output AE

Senso-board J7 Rel. 3: Output NE

Relay board J8 Rel. 1: Output AE 1 only ICC 300 / 350

Relay board J8 Rel. 2: Output AE 2 only ICC 300 / 350

ICC 200: Mono outputboard

J8 Rel. 1: Output AE 1 only ICC 200


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Overview of the relay test options

Test no. 0Switch off all relays

Test object Relay status Remarks

Rel. 1, motherboard switched offPower starting

current limitation

all other relays switched off

Test no. 1Switch on all relays

Test object Relay status Remarks

Rel. 1, motherboard switched onPower starting

current limitation

Rel. 2, motherboard

depending ondongle installedcapacitancegrounded(only ICC 350)

switched onor off

all other relays switched on

All relays on PCBs additionally required for the ERBOTOM ICC 350 MIC are switched on.

Test program no. 6Relay test


Test program no. 7Setting the NESSY version

General description

Using this program, you can set four NESSY versions. After starting the test program, you will see thefollowing displays when you activate key 3:

Display


NE.1 || or |

In the AUTO COAG field:

|| means a split neutral electrode,

| means of non-split neutral electrode.

Using the keys 8 (Up) or 9 (Down), you can set four different NESSY versions:

No. AUTO CUT AUTO COAG 1 Remarks

1 NE.1 || or | for split and non-split electrodes

2 NE.2 | only for non-split electrodes

3 NE.3 ||only for split electrodes; acoustic (3 times) and

visual alarm

4 NE.4 ||only for split electrodes; acoustic (continuous

tone) and visual alarm

At the end of the test, the NESSY version number is stored. Version number 1 is the standard version setwhen the unit is delivered. In case of memory failure, version no. 1 is automatically set. When switching onthe power, version no. 2, 3 or 4 is displayed briefly if this is set. The standard version no. 1 is not displayed.


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Test program no. 8Display of the software version and anyoptions

General description

Using this program, you can display the software version, while on the ICC 350 and ICC 300, you can alsosee the display of an option identification number.

After starting the program, you will see the following display:

Display


Snr x.xx y

Explanation:

x.xx Software version no. (e.g. 2.0)

y Option code no. (e.g. 8).

Codeno. means

0 Unit without option

1 ICC 350: Neurotest ZMK

2 ICC 350: Neurotest TUR

4

8 ICC 350: ENDO CUT function

16

32

64

128

256

The code number is based on a binary code:

Example

Code no. 2 means ICC 350 Neurotest TUR

Code no. 9 means ICC 350 Neurotest ZMK + Endocut

1 + 8


Test program no. 9Activating display programs to displaymeasurement values

General description

This program activates displays in the standby mode or during activation. With key 3, Test program no. 9 isstarted.

After starting, you will see the following display:

Display


nr. 0

Within Test program no. 9, 22 subprograms for displaying specific data can be called up, while subprograms16 to 22 are intended only for use by the manufacturer.

These subprograms can now be set using keys 8 (Up) or 9 (Down). Once the required display program hasbeen selected, it is reactivated using key 3. The selected display program remains activated until the poweris switched off.

Display


nr. 0 ... 22


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Display programs nos. 1–3

The selected display program now displays the required data during regular operation of the unit. To dothis, the appropriate operating modes must be set and the accessories activated.

The display program remains activated until the power is switched off. To return to normal operation, theunit must be switched off for a short time and switched back on again.

Display program no. 1: not assigned

Display program no. 2: not assigned

Display program no. 3:

ST generator time control with activation of SPRAY or FORCED.

Display for ICC 350 and ICC 300:


ttt P 2 P 3 tst

ttt Difference between set frequency and actual frequency

P 2 Set power [W]

P 3 Set power [W]

tst Abbreviation of the test title (Time-ST stage)


ST generator time control with activation of FORCED.

Display on ICC 200:

AUTO CUT AUTO COAG

ttt tst

ttt Difference between set frequency and actual frequency

tst Abbreviation of the test title (Time-ST stage)



ST generator measurement values with ST generator activation.

Output measurement values Ust, I

st



uuu iii P 3 UI

uuu Measurement value of the output voltage sensor

iii Measurement value of the output current sensor

P 3 Set power [W]

UI Abbreviation of the test title (Voltage and current measurement)


ST generator measurement values with ST generator activation.

FORCED activation

Display for ICC 200:

AUTO CUT AUTO COAG

uuu USt

uuu Measurement value of the output voltage sensor


Power supply unit measurement values for ST generator activation.

Measurement values Unt, I

nt



uuu iii P 3 UI

uuu Measurement value of the power supply unit voltage

iii Measurement value of the power supply unit current

P3 Set power

UI Abbreviation of the test title (Voltage, current measurement)



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Power supply measurement values with ST generator activation, FORCED activation.

Measurement values Unt, I

nt


AUTO CUT AUTO COAG

uuu Unt

uuu Measurement value of the power supply unit voltage


ST generator measurement values for ST generator activation, FORCED activation.

Measurement value Ist


AUTO CUT AUTO COAG

iii Ist

iii Measurement value of the output current sensor


Power supply unit measurement values for ST generator activation, FORCED activation.

Measurement value Int


AUTO CUT AUTO COAG

iii Int

iii Measurement value of the power supply unit current

Display program nos. 5–7



Measurement values for activation of the sine-wave generator.

AUTO CUT, AUTO COAG 1 and 2 in SOFT mode, AUTO BIPOLAR

Output measurement value Uact



ppp uuu cos PU

ppp HF power output [W], present power output

uuu HF output voltage [V], present output voltage

cos cos-j-value from the table (ICC 350 only)

PU Abbreviation of the test title (Power and voltage measurement)

Display program no. 8






AUTO CUT AUTO COAG

ppp P

ppp HF power output [W]

P Abbreviation of the test title (Power measurement)


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Output measurement values Ireal

, cos j (Real part of the current and cos j between voltage and current)



iii cos ppp IC

iii Real part of the measurement value from the HF output current

cos cos-j value from the table (ICC 350 only)

ppp HF power output [W] for ICC 350

IC Abbreviation of the test title (Current measurement and cos j measurement)




Output measurement value: Measurement value of the real part of the HF output current

Display for the ICC 200:

AUTO CUT AUTO COAG

iii I

iii Measurement value of the real part of the HF output current

I Abbreviation of the test title (Current measurement)








AUTO CUT AUTO COAG

uuu U

uuu HF output voltage [V]

U Abbreviation of the test title (Voltage measurement)




Output measurement value cos j


AUTO CUT AUTO COAG

cos Cos

cos cos-j value from the table

Cos Abbreviation of the test title (cos-j measurement)



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Display program no. 12 (Start)


Contact resistance at AUTO START, in standby operation.

Only valid for AUTO START 0, 1, 2 and in standby operation.



uuu P2 P3 br

uuu Measurement value of the contact monitor voltage measurement

P2 Set power for AUTO COAG 1 [W]


br Contact monitor


Contact resistance for AUTO START, in active condition.

Only valid for AUTO START 0, 1, 2 and in active condition.



rda P2 P3 br

rda Calculated value of the contact resistance [ohms]



br Contact monitor


Display program no. 12 (continued)


Contact resistance for AUTO START, in standby operation.


AUTO CUT AUTO COAG

uuu br

uuu Measurement value of the contact monitor voltage measurement

br Contact monitor


Contact resistance for AUTO START, in active condition.


AUTO CUT AUTO COAG

rda br

rda Calculated value of the contact resistance [ohms]

br Contact monitor


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NESSY transition resistance in stand-by-operation and on activation.



rtr P2 P3 br

rtr calculated NESSY transition resistance [Ohm]

P2 set power for AUTO COAG 1 [W]

P3 set power for AUTO COAG 2 [W]

br AUTO START monitor


NESSY transition resistance in stand-by-operation and on activation.


AUTO CUT AUTO COAG

rtr r

rtr calculated NESSY transition resistance [Ohm]

r AUTO START monitor



NOTE

Display programs nos. 13 and 14 are not assigned. The program nos. 17–22 are only intended for internaluse by the manufacturer.



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Test program no. 10Changing the maximum time limit

General description

Using this program, you can change the time limit for the ICC 200, 300 and 350. The setting range variesfrom 3 to 960 seconds.

Using the appropriate “Up” or “Down” keys, the time limit restriction for every current quality can be setindividually.

For the ICC 350, various time limit settings can be stored in the individual program memories for each user.This occurs after selecting the program number with program memory key 2 and then changing the respectivecurrent qualities using the appropriate “Up” or “Down” key.

After termination of Test program 10 using key 3, the settings made are stored.

In case of memory failure, as well as in the delivery condition, the max. time limit for all programs andcurrent qualities (CUT, COAG 1, COAG 2, BIPOLAR) is set at 90 seconds.

After starting Test program 10 with key 3, you will see the following display:


t1 t2 t3 t4

• t1: Time limit restriction for AUTO CUT in seconds

• t2: Time limit restriction for AUTO COAG 1 in seconds

• t3: Time limit restriction for AUTO COAG 2 in seconds

• t4: Time limit restriction for AUTO BIPOPLAR in seconds.

Using the following keys, you can adjust the max. time limit (see page 1-4):

• AUTO CUT : Keys 4 and 5

• AUTO COAG 1 : Keys 8 and 9

• AUTO COAG 2 : Keys 11 and 12

• AUTO BIPOLAR: Keys 15 and 16


Test program no. 11Measurement value output for themeasurement channels

Using this program, you can measure the internal supply voltages and the temperature of the unit. In addition,you can display all analog direct measurement channels 1, 2, 3 and 4 as well as analog multiplex measurementchannels.


Display ICC 350 / 300


U 0 XX.X

U– 1 XX.X

U 2 XX.X

tPt ttt xxx

Ch 4 … 22 yyy

• XX.X Voltage value [V]

• ttt Temperature [°C]

• xxx ADC measurement value in the range 0 … 255

• yyy ADC measurement value in the range 0 … 255

Using the keys “Up” (8) or “Down” (9), call up the subprograms U, U-, tPt and Ch 4 … 22.

U0 is the low voltage controlled to +15 volts ±10%

U–1 is the low voltage controlled to –15 volts ±10%

U2 is the low voltage controlled to 24 volts ±10%

tPt is the temperature display of the output stage ±15%

Ch4 … 22 are the analog measurement channels according to the following table:

Display ICC 200


U.15 XX.X

–15 XX.X

U.24 XX.X

tPt ttt

C.aa yyy


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• XX.X Voltage rating [ V ]

• ttt Temperature [°C ]

• C.aa Channel number

• yyy ADC measurement value in the range 0 ... 255

Using the “Up” (8) or “Down” (9) keys, call up the subprograms U, U-, tPt und C. 4-22.

U0 is the supply voltage controlled to +15 volts

U–1 is the supply voltage controlled to –15 volts

U2 is the supply voltage controlled to +24 volts

tPt is the temperature display of the output stage

C. 4 … 22 are the analog measurement channels according to the following table.

Voltage test U 0 or U.15

Measurement and display of the supply voltage controlled to +15 volts

Display XX.X: e.g. 14.6 equals 14.6 volts

Voltage test U–1 or –15

Measurement and display of the supply voltage controlled to –15 volts

Display XX.X: e.g. 14.6 equals –14.6 volts

Voltage test U 2 or U.24

Measurement and display of the supply voltage controlled to +24 volts

Display XX.X: e.g. 23.6 equals +23.6 volts

Measurement of the output stage temperature

Display tPt 25 means that the temperature inside the unit is 25 °C.

Test of the analog measurement channels (Subtest 4 … 22)

Measurement and display of 19 analog measurement channels inside the unit.

(Intended for internal use by the manufacturer only).

Test program no. 11Measurement value output of themeasurement channels


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Test program no. 12Setting the FORCED voltage

General description

When this program is called up, the set FORCED version is displayed. Using the “Up” (8) or “Down” (9)keys, you can set one of three (V2.0) or four (V4.0) FORCED versions.

With FORCED coagulation, the ST pulse generator produces short pulses with a high no-load voltage. Thehigh no-load voltage has both advantages and disadvantages which are described in this section with thefeatures.

Using Test program 12, the no-load voltage can be changed relative to the set power limitation.



For. vs nr

For. Voltage limitation for FORCED coagulation

vs nr: FORCED version nos. 1…3 (V2.0) or 1…4 (V4.0)

Call up the version number using the “Up” (8) or “Down” (9) keys.

Forced version vs nr 1

A power limitation of 1 to 30 watts increases the no-load voltage constantly up to approx. 1,300 Vp.

Above 30 watts power limitation, the no-load voltage is limited to approx. 1,300 Vp.

Characteristics of the version vs nr 1

• Minimal image interference on monitors.

• Danger of burns from contact with a terminal.

• Good coagulation via a terminal without heavy spark formation.

• No heavy spark formation even at a high power setting.

• To direct power into the tissue, the tissue must be contacted (No power transmission via spark).

FORCED version vs nr 2

A power limitation of 1 to 30 watts increases the no-load voltage constantly up to approx. 1,300 Vp. Above

30 watts power limitation, the no-load voltage continues to increase:

No-load voltage at 40 watts: approx. 1,500 Vp



No-load voltage from 80 to 120 watts: approx. 2,300 Vp.


Test program no. 12Setting the FORCED voltage

Characteristics of version vs nr 2

The characteristics are between those of the vs nr 1 and those of the vs nr 3.

FORCED voltage version vs nr 3


30 watts power limitation, the no-load voltage is limited to approx. 2,300 Vp.


• Image interferences on monitors possible.

• Danger of burns from contact with a terminal possible.

• Heavy spark formation with coagulation via a terminal.

• Heavy spark formation also at a 30 watts power setting.

To direct high-frequency power into the tissue, the tissue must not necessarily be contacted (current flow orpowered transmission [see vs nr 2] possible via arc).

FORCED voltage version vs nr 4


30 watts power limitation, the no-load voltage is limited to approx. 2,600 Vp.


• Image interference on monitors possible.

• Danger of burns from contact with a terminal possible.

• Heavy spark formation with coagulation via a terminal.

• Heavy spark formation also at a 30 watts power setting.

To direct high-frequency power into the tissue, the tissue must not necessarily be contacted (current flow orpowered transmission [see vs nr 2] possible via arc).

Important notes

• The vs no set only applies to FORCED AUTO COAG 1, FORCED AUTO COAG 2 and for programs0 to 11.

• For the MIC program, vs nr 1 is automatically set.

• In case of memory failure, vs nr 1 is automatically set.

When switching on the power supply, vs nr 2, vs nr 3 or vs nr 4 (V4.0) is briefly displayed. The standard vsnr 1 is not displayed.


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Measuring equipment

To service equipment from the ICC series, various meters are necessary. The following list summarizesrecommended measuring equipment for a quick overview.

ATTENTION !

Individual parts and boards are at supply voltage potential. After removing the housing cover, there is risk ofelectrical shock due to unintentional contact with the power plug connected.

The HF power meter, the oscilloscope and the frequency counter must be operated as floating.

The unit contains a lithium battery which must only be discarded in battery collection containers in completelydischarged condition (i.e. after use). Otherwise, care must be taken to prevent shorting in accordance withthe battery regulations.

Test program no. 16Pre-information:Recommended measuring equipment

Measuring equipmentEE order no.

(230 V; 50/60 Hz)EE order no.

(120 V; 50/60 Hz)

Testbox 2 20183-040 20183-041

70 V testbox for spark monitor ICC 20100-019 20100-028

HF power meter —

Isolating transformer for APM 600 20100-013

Adapter cable for NESSY monitor 20100-003

Bipolar adapter cable 20100-004

Measurement cable for LF patient leakage current 20100-009 (standard)

Measurement cable for LF patient leakage current 20100-012 (international)

2-channel oscilloscope (> 40 MHz) —

Frequency counter —

Multimeter with µA range —

Bipolar testbox automatic starter ICC 20100-017

Extension board 30183-106


Test program no. 16Pre-information:Jumper on the display board

General information

On the display board, there are slots for jumper which, by plugging in so-called “jumpers”, can activatespecial software by which our HF surgical units from the ICC series can be adapted to prescribed specialconditions (such as are necessary in various countries) or by means of which specific tests can be performedby the testing department and service.

WARNING

These jumpers are already positioned during production and must never be changed randomly. For a softwareupdate, make certain that the jumpers are correctly plugged in. Back-up plugs are in the bag with the sparefuses.

Where are the slots for the jumpers?

If you look at the display board inside the open unit from the perspective of the rear panel, the followingstylized image can be seen:

Two blocks are available to receive jumpers: At the top right is a block with the slots J3–J6, at the bottomleft (ICC 300: bottom right) is the block with the slots J7–J10.

3 6

J3–J6

7 10J7–J10

Connector

to the CPULED display LED display LED display LED display

7 10J7–J10

Only at right onICC 300


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Block 1

Pos. Function Jumper plugged in Jumper not plugged in

J3

Only ICC 350:Switchover of neutralelectrode to "capacitancegrounded" or "floating output".

Output circuitry withcapacitance ground.

Output circuitry is "floatingoutput".

J4Only for test purposes.Temperature display.

Maximum temperature ofgenerator is displayed

(ERROR 11).

The unit is delivered with thissetting.

J5 J5 functions together with J6. (see following explanation) (see following explanation)

J6 J6 functions together with J5. (see following explanation) (see following explanation)

The J5 and J6 slots are read by the CPU as a binary number. In this way four different functioning methods,independent from one another, are programmable by plugging in these jumpers:

J5 J6 Description of the set function

free free None of the following 3 programs is selected.

plugged free Contact monitor is blocked and AUTO START display is "off".

free pluggedDuring activation, another activation signal from some other source has switched offthe unit activation (Spanish regulation).

plugged plugged

F leakage current > 150 mA, but < 300 mA:Triple visual and acoustic alarm is triggered.HF leakage current > 300 mA:The HF generator is switched off. Visual and acoustic alarm is triggered.



Block 2 (as of Version 1.06)

Pos. Function Jumper plugged in Jumper not plugged in

J7 (not in use) (not applicable) (not applicable)

J8

Low-resistance load operation< 5 ohms triggers ERROR 30to protect accessories andgenerator.ERROR 30 can bedeactivated here whenactivating AUTO BIPOLAR.

Deactivation of ERROR 30possible for BIPOLAR COAG

(as of V 2.00):- after 4 s red LED (output error)- Output current max. 1.5 A- no ERROR indication(This specification especially

applies to the USA.)

ERROR 30 warning appearsdue to delivery status(not USA, ERROR 30

deactivated here).

Regardless of the selection, special settings are necessary for specific countries. These can be found in thefollowing matrix. Explanation:

1 Jumper must be plugged in,

o Jumper must not be plugged in,

x (according to the description for Block 1).

Country J5 J6 J7 J8

Germany o o no function per above table

European countries(excepted:

see below)o o no function per above table

Great Britain 1 o no function per above table

Spain o 1 no function per above table

Japan 1 1 no function per above table

USA x x no function 1



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Note regarding ERROR 30

With bipolar coagulation, it may happen that, over a longer period of time, a short circuit occurs on one ofthe bipolar forceps. Particularly for thin forceps, there is a danger with a short circuit that the forceps beginto glow due to the high current and the HF generator is damaged due to a mismatch.

Since tissue resistance quickly reaches values above 50 ohms during a coagulation process with conventionalbipolar instruments, normally after starting the coagulation by desiccating the tissue, it is assumed that,with a continuously low resistance of less than 50 ohms, an error status results which is indicated byERROR 30.

In addition, there are large-area coagulation forceps for which a resistance less than 50 ohms is set, insofaras the legs are only open to a small degree. If the operating surgeon activates such an instrument with asmall leg opening, ERROR 30 is indicated after approx. 5 seconds and activation is switched off. This errormessage is felt to be a nuisance by some operating surgeons. In these particular cases, the ERROR 30 errormessage can be switched off on units above Version 2.00 by means of the jumper in position J8. In this case,at a resistance less than 50 ohms, the output current of the ICC is limited to 1.5 A.

WARNING

For a power setting greater than 20 W, there is a danger of destroying the HF generator after approx. 1minute during short-circuit operation. There is no warning if the ERROR 30 error message is switched off.



General description

All adjustment work is performed solely with the help of this test program. Here the sequence fromAdjustment 1 to Adjustment 13 must be followed.

Ending the test is only possible at the setting Adjustment 0 (as of 0 in the display).

If Test program 16 is activated, the test program is automatically called up again if there is a brief powerfailure lasting up to approx. 15 seconds. If the power failure lasts longer than 15 seconds, the test programis no longer automatically called up.

This text describes only the function of the program. The unit is adjusted according to the adjustmentinstructions. These adjustment instructions are a component of the service documents.

After starting the test program with key 3, you will see the following display:

Display ICC 350 / 300


Ab xx (0 … 13)

xx Adjustment test number (beginning with 0)

Display ICC 200

AUTO CUT AUTO COAG

Ab xx

xx Adjustment test number (beginning with 0)

Adjustment 0 permits entry and exit from Test program 16.

Test program no. 16General description


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Using the “Up” (8) and “Down” (9) keys, call up an adjustment test number. Start the adjustment test withkey 3.

Test program no. 16List of individual adjustments

Test program 16: List of individual adjustments

Adjustment Function of the adjustment

1 Phase relationship of the power supply unit

2 Current/voltage setting of the power supply unit

3 Setting of the actuation pulse length for the HF generator

4 Phase relationship of the HF generator

5 Current/voltage setting of the HF generator

6 Current/voltage setting of the amplified measurement values of the HF generator

7 Phase angle setting (cos Phi)

8 Adjustment of the function monitor sensor

9 NESSY adjustment: Contact resistance

10 HF leakage current monitor

11 Starting threshold of the contact monitor

12 Length of actuation pulse and frequency setting of the ST generator

13 LF leakage current measurement and setting help for CF


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Adjustment 1


Adjustment 1Power supply unit phase relationship

Procedure

• Unplug power cable from the ERBOTOM ICC.

• Pull off the black lines on the bridge-connected rectifier BR 1 on the motherboard and connect anadjustable isolating transformer to BR 1 in its place, the output voltage of which is adjusted to 0 V.With well prebalanced boards, a transformer with a fixed voltage of approx. 155 V AC can also beused.

ATTENTION !

For units which are set to 120 V, you must absolutely make certain that the Erbotom ICC is operated via anisolated transformer. In addition, the connection between J15 and J20 on the motherboard must be removedfrom J15.

• Connect 200 ohms load resistance (e.g. APM 600) to MP1 = GND and MP2 on the power module(slot J5).

• Connect the oscilloscope to MP1 = GND and MP2 = probe on QC power stage end stage (slot J4).

• Plug the power cable for the Erbotom ICC back in and activate Test program 16, Adjustment 1.

• Activate using the yellow pedal on the footswitch (AUTO CUT).

• Slowly increase the output voltage on the isolating transformer. With a correct setting, the voltagecharacteristic corresponds to the graph illustrated below, whereby the small dip (approx. 20 V) nextto the square-wave edges represent a good criterion of evaluation for this.

• Set the phase angle using TP13 (control board, slot J3). For the final setting, the square-wave voltagemust be increased to approx. ±100 V. (Display in AUTO CUT approx. 205).

• After the setting is complete, disconnect the ERBOTOM ICC from the power, remove the cable fromthe isolating transformer to BR1 and connect the two black lines again to the bridge-connectedrectifier.

Fig.: Voltage characteristic of supply unit power

T

1 >

1) Ch 1: 50 Volt 500 ns


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• U NTG Power supply unit voltage [V]

• nPh Adjustment of the phase relationship for the power supply unit generator

Adjustment 1Power supply unit phase relationship

ICC 350ICC 300


Ab nPh before activation

U NTG nPh during activation

ICC 200

AUTO CUT AUTO COAG

Ab nPh before activation

U NTG nPh after activation


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Adjustment 2


Adjustment 2Power supply unit output parameters

Procedure

• Connect 500 ohms load resistance (APM 600) to MP1 = GND and MP2 = +U on “Power Module”board (slot J5).

• Plug in the power cable on the ICC.

• Call up Test program 16, Adjustment 2.

• Activate ERBOTOM ICC using the yellow footswitch pedal (AUTO CUT).

• Set TP2 on the control board (slot J3) in such a way that 100 W (tolerance +0% / –7%) can bemeasured at the HF power meter and a power supply current of 447 mA (tolerance 444...455 mA) isdisplayed in the AUTO COAG 1 display. In the AUTO CUT display, a power supply voltage of 223V (tolerance 223…227 V) is displayed.

• Disconnect the ICC from the power and remove the connecting cable from MP1 and MP2.

ICC 350ICC 300


Ab 2 nUI before activation

U NTG I NTG I NTG V1 nUI during activation

• U NTG Power supply voltage [V]; Set value = 223 V

• I NTG Power supply current [mA]; Set value = 447 mA

• I NTG V1 Amplified power supply current [mA]

• nUI Adjustment of the current voltage setting of the power supply generator

ICC 200

AUTO CUT AUTO COAG

nUI before activation

U NTG I NTG after activation

• U NTG Power supply voltage [V]; Set value = 223 V

• I NTG Power supply current [mA]; Set value = 447 mA


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Adjustment 2Power supply unit output parameters


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Adjustment 3


Adjustment 3Actuation pulse length HF generator

Procedure

• Measure the actuation pulse TS1 on the control board (slot J3) with an oscilloscope at measuringpoint MP6 = GND and MP2 = probe tip.

• Switch on the ICC and call up Test program 16, Adjustment 3.

• Using TP14 on the control board (slot J3), set a pulse length of 350 ns.

ATTENTION: Pulse is inverted.

• Disconnect the ICC from the power.

• Remove the probe from MP6 and MP2.

ICC 350ICC 300


Ab 3 thF auto. activated

• thF Pulse length of the HF generator [ms]; Set value = 350 ns

ICC 200

AUTO CUT AUTO COAG

thF auto. activated

• thF Pulse length of the HF generator [ms]; Set value = 350 ns


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Adjustment 3Actuation pulse length HF generator

Fig.: Transistor switching pulse

100 ns/Div

5 V/D

iv


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Adjustment 4


Procedure

• Switch the ICC back on and call up Test program 16, Adjustment 4.

• With probe 100 : 1, the no-load HF output voltage between the active and neutral electrode must bemeasured; for 2 monopolar outputs: Output CUT / COAG 2.

• Activate the ICC using the yellow footswitch pedal (AUTO CUT).

• Observing the output voltage form, increase the power supply voltage in the CUT field (AUTO CUTdisplay corresponds to the set power supply voltage; AUTO COAG 1 display corresponds to theactual power supply voltage). Using TP15 on the control board (slot J3), a symmetrical sine-wavecharacteristic must be set.

• At a maximum power supply voltage (= 250 V), make the final adjustment. At the same time, set agood symmetrical sine-wave shape and a minimum power supply current (= display in AUTO BIPO-LAR field), which means a minimal no-load power loss (see Fig.). CAUTION: The best possiblesine-wave characteristic has priority over the absolute current minimum.

ICC 350ICC 300


U SOLL = 30 V 4 Ph before activation

U SOLL U NTG I NTG V1 I NTG during activation

• U SOLL Set power supply voltage [V]


• I NTG V1 Amplified power supply current [mA]

• I NTG Power supply current [mA]

ICC 200

AUTO CUT AUTO COAG

U SOLL (Start = 30 V) nPh before activation

U SOLL U NTG after activation

• U SOLL Set power supply voltage [V]


Adjustment 4Phase relationship HF generator


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Adjustment 4Phase relationship HF generator

Fig.: HF no-load voltage

500 ns/Div

300 V/D

iv


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Adjustment 5


Adjustment 5HF generator output parameters

Procedure


• Connect the HF power meter, e.g. APM 600 (set to 500 ohms) via active cable to active and neutralelectrode output sockets on the ICC; for 2 monopolar outputs: CUT / COAG 2 output and NE socket.

• Activate the unit with the yellow pedal of the footswitch (AUTO CUT).

• Using TP3 on the control board (slot J3), the HF output voltage is set in such a way that a power of100 watts is indicated on the HF power meter and a value of 223 volts HF effective voltage (tolerance220…223 volts) in the display on the AUTO CUT field.

• Under certain conditions, TP 4 (HF current limitation) must be turned back far enough before thissetting so that no current limitation is effective.

• Using TP4 on the control board (slot J3), the HF current limitation is set in such a way that a value of447 mA effective HF current (tolerance 439…447 mA) with constant power output appears in theAUTO COAG 1 field.

• Insofar as the measurement of the phase angle between HF voltage and HF current produces a valuegreater than 98 (which is 100 · cos j) at this setting in the AUTO COAG 2 field, a value of 100 wattsHF power output is displayed (tolerance 97...100 watts) in the AUTO BIPOLAR field after correctadjustment of voltage and current.

• For the voltage characteristic at a 500 ohms load, see Fig.

ICC 350ICC 300


Ab 5 UI before activation

U HF I HF cos Phi P during activation

ICC 200

AUTO CUT AUTO COAG

UI before activation

U HF I HF after activation

• U HF HF voltage [V]; Set value = 223 V

• I HF Real part of HF current [mA]; Set value = 447 mA


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• cos Phi Phase angle 0…100*) Set value = 100

• P Emitted active power [W]; Set value = 100 watts at 500 R

cos-j display, when the “Up” (8) key is pressed.

P display, when the“Down” (9) key is pressed.

*)To avoid decimal places, the value of the table value of cos j is indicated times 100, such that 100 means cos j = 1.

Adjustment 5HF generator output parameters

Fig.: HF voltage atR = 500 ohms

500 ns/Div

100 V/D

iv


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Adjustment 6


Procedure


• With the same setup as for Adjustment 5, the unit is activated. At the same time, 5 watts (tolerance4.5…5.5 watts) should be output at the HF power meter.

• Using TP 5 on the control board (slot J 3), the amplified HF voltage measurement is set in such a waythat a value of 50 volts HF output voltage is displayed in the AUTO CUT field.

• Using TP 6 on the control board, the amplified HF current measurement is set. The value 100 mA Hfoutput current is displayed in the AUTO COAG 1 field when set correctly.

• In the Auto Bipolar field, the emitted active power is displayed.

• In the Auto Coag 2 field, the phase angle cos j is displayed.

ICC 350ICC 300


Ab 6 UI before activation

U HF I HF cos Phi P during activation

ICC 200

AUTO CUT AUTO COAG

UI before activation

U HF I HF after activation

• U HF HF voltage amplified [V]; Set value = 50 V

• I HF Real part of the amplified HF current [mA]; Set value = 100 mA

• cos Phi Phase angle 0…100 from the table Set value = 100

• P Emitted active power [W]; Set value = 5 watts at 500 R

ICC 200:

cos-j display appears when the “Up” (8) key is pressed.

P-display appears when the “Down” (9) key is pressed.

Adjustment 6HF generator output parameters amplified


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Adjustment 6HF generator output parameters amplified


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Adjustment 7


Adjustment 7Phase angle (cos j)

Procedure


• Using ERBE original cable, connect the APM 600 (set at 500 ohms) to the ICC; with 2 monopolarconnections: Connect active output socket: CUT / COAG 2 (ICC 300 / 350) and NE socket.

• Connect a capacitor with 1 nF (e.g. ERBE component no. EE 51103-026) with short lines across theactive electrode and NE sockets on the HF power meter.

This produces a phase shift between voltage and current of 45° at a frequency of 340 kHz.

• Activate the cut footswitch.

• Using TP 7 on the control board (slot J3), the unit is set in such a way a value of 73 (display is100 · cos j) is displayed in the AUTO CUT field and a value of 120 (analog / digital convertermeasured value) is displayed in the AUTO COAG 1 field.

ICC 350ICC 300


Ab 7 PHI before activation

COS xxx PHI during activation

ICC 200

AUTO CUT AUTO COAG

PHI before activation

COS xxx after activation

• COS cos-j values from table; Set value = 73

0 means phase shifting = 90°

100 means phase shifting = 0°

• xxx Analog cos-j measurement value; Range 0…255

• Veff

HF output voltage;

200 mA output current limitation


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Adjustment 7Phase angle (cos j)


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Adjustment 8


Adjustment 8Spark monitor

Procedure (also applies to the units without HIGH CUT or ENDO CUT)

• On the ICC 300 and ICC 200 without ENDOCUT, TP8 should be set to the upper limit (to do this,turn TP8 clockwise).


• A DC voltage of 70 volts is fed into the patient circuit between the center control for the active AEsocket (with 2 monopolar outputs: Output CUT / COAG 2) and the neutral electrode NE socket (AE =+, NE = –). To do this, the ERBE TESTBOX 70 volts is recommended (ERBE Order no. 20100-019).

• Adjust TP8 on the control board (slot J3) is set in such a way that a measurement value of 77 isindicated for the A/D converter, and a value of 70 volts DC is displayed in the AUTO COAG 1 field.On the ICC 200 ENDOCUT, this value appears in the AUTO CUT field, while the A/D convertervalue is not shown.

ICC 350


xxx yyy FU Standby

ICC 200 ENDO CUT

AUTO CUT AUTO COAG

yyy FU Standby

• yyy Fed-in DC voltage for the spark measurement value (70 V)

• xxx Analog spark measurement value

The input for applying the test DC voltage is the CUT / COAG 2 socket.


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Adjustment 8Spark monitor


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Adjustment 9


Adjustment 9NESSY resistance measurement

Procedure


• Connect an NE cable to the NE input receptacle on the ICC system.

• Connect the other end of the NE cable between 120 ohms of resistance.

• Set TP9 on the control board (slot J3) in such a way that a measurement value of 200 for the A/Dconverter is displayed in the AUTO CUT field and a resistance of 120 ohms is displayed in the AUTOCOAG 1 field.

• Now exchange the terminating resistor for a resistance value of 40 ohms. Now verify the measurementat this resistance; a resistance of 40 ohms (tolerance 37...43 ohms) must be displayed in the AUTOCOAG 1 field.

ICC 350ICC 300


xxx R üb r Standby

ICC 200

AUTO CUT AUTO COAG

xxx R üb Standby

• R üb Contact resistance at the neutral electrode [W]

• xxx Analog measurement value of the contact resistance.

For resistance values outside the measurement accurary, the display --- appears.


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Adjustment 9NESSY resistance measurement


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Adjustment 10


Adjustment 10HF leakage current measurement

Procedure (This adjustment only applies to the ICC 350)


• Connect the HF power meter (set to 350 ohms load resistance) between the active electrode of theCUT / COAG 2 (center) socket and the potential equalization.

• Jumper J3 must be plugged into the display board for this adjustment (earthed reference).

• Short together the NE-ERBE original adapter cable. Activate the ICC 350 using the blue footswitchpedal (AUTO COAG 1).

• Using the power setting in the AUTO COAG 1 field, set the leakage current flowing to ground to avalue of 150 mA

eff (tolerance 131…169 mA) (use an HF effective current meter or set a power of 7.9

watts at a HF power meter with a load resistance of 350 ohms [tolerance 6.0…10 watts (from P = I² · Rwith P = 7.9 watts and R = 350 ohms is a current I = 150 mA)]).

• Set TP10 on the control board (slot J3) in such a way that the HF leakage alarm is thus displayedvisually (the LED in the safety field flashes in the display indicates the value 50 in the Auto Cutfield).

• Increase the leakage current by changing the power setting until an audible alarm is also emitted.This should occur at 300…350 mA (accordingly 31.5…43 watts on a HF power meter at the abovesetting).

ICC 350


xxx ppp HFL Standby

• ppp Set SOFT COAG power which can be changed during activation.

• xxx Measurement value of the HF leakage current measurement.

Using the power setting in the AUTO COAG 1 field, set the HF leakage current flowing to ground atI

eff = 150 mA. This is not assigned for the ICC 200 and 300 since no HF leakage current monitor is

available there.


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Adjustment 10HF leakage current measurement

AE NE

APM 600ICC

Potential equalizationpin

NE

AE

NE cable withshort-circuit

3 m cableIHF leakage


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Adjustment 11


Adjustment 11Contact monitor

Procedure


• At the BIPOLAR output of the ICC, the ERBE bipolar Testbox for the bipolar automatic starter (EE20100-017 ) or appropriate fixed resistors (1.2 kOhm and 2.5 kOhm with a capacity of 15 watts aswell as 18 kOhm, 1 watt) is connected via the EE bipolar original cable.

• With a resistance of 2.5 kOhm (socket 1–2), a value of 25 must be displayed in the AUTO CUT field.(Display = resistance divided by 100). The setting of the switch-on threshold with PT11 on the PCBcontrol board (slot J3) proceeds in such a way that, at a load resistance of 2.5 kOhm, the display inthe AUTO COAG 2 field changes from “OFF” to “ON”.

• Now the short-circuiting monitor is set by connecting a 6 ohm resistor (capacity = 0.5 watts) to theBIPOLAR outlet. Then, the display »rLo« appears on the AUTO COAG 1 display. Using TP12 on thePCB control board J3, the display is set to a measurement value of 100 in the AUTO CUT display.

• Testing the shutdown response: To do this, exit Test program 16 briefly by selecting Test program 0.The ICC operates in the normal mode. Switch on AUTO START 1. Set the bipolar power to 1 watt.The BIPOLAR outlet is connected to sockets 1 and 3 on the ERBE Testbox and thereby charged with1.2 kOhm. The BIPOLAR generator must automatically be activated after the delay time. Now presspushbutton 1 on the Testbox. This raises the capacity resistance to 18 kOhm. The BIPOLAR generatormust now shut down.

• This test must be repeated at the power settings 20 watts, 40 watts, 50 watts (or without AAMIstandard up to 120 watts).

ICC 350ICC 300


uuu OFF br open output

rda ON br loaded output

iii rLo br loaded output

ICC 200

AUTO CUT AUTO COAG

uuu OFF open output

rda ON loaded output


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• uuu Standby measurement value of the contact monitor at a preset bipolar power of 10 watts

• rda Calculated contact resistance at activation [W/100]

• iii Amplified output current at contact resistance < 1 kW

• rLo Display if resistance measured at activation < 1 kW

Adjustment 11Contact monitor


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Adjustment 12


Adjustment 12Pulse/pause length ST output stage

Procedure


• Measure actuation impulse TSI_STE at measuring point MP 3 on ST output stage (slot J6) with theoscilloscope (measuring point MP1 = GND).

• Using TP16, set this to a pulse length of 200 ns (±50 ns).

IMPORTANT! The pulse time is measured at average amplitude, i.e. at approx. 7.5 volts level.

ATTENTION! The pulse is inverted.

• The repetition frequency at TP17 is set in such a way that the value 0 (tolerance 0...4) is displayed inthe AUTO CUT field.

• Now exit the test program and return the ICC to normal operating condition.

• To check the performance, connect the HF output to the HF power meter, setting 500 ohms.

• Activate the ICC using the blue footswitch pedal at the SPRAY and FORCED normal settings. Thepower output in watts should correspond to the display in the AUTO COAG 2 field.

• Check whether the maximum emitted output power with SPRAY and FORCED is within the tolerancelimits (120 W ± 15 %). If necessary, conform the pulse length to the PCB control board using TP16.TP17 must no longer be changed.

ICC 350ICC 300


xxx ppp tSt Standby

ICC 200

AUTO CUT AUTO COAG

xxx tSt Standby

• ppp Set AUTO COAG 2 FORCED power

• xxx Difference = Set frequency minus actual frequency


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Adjustment 12Pulse/pause length ST output stage

Fig. : Transistor switching pulse SToutput stage

50 ns/Div

5 V/D

iv


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Adjustment 13


Adjustment 13LF leakage current monitor (ICC 350 only)

Procedure


• Set the jumper to the “capacitance grounded” operating mode (place jumper J3 on display board).

• Perform adjustment using ERBE TESTBOX 2 or another 50 Hz sine-wave current source.

• Between the neutral electrode output and the potential equalization, feed a 50 Hz sine-wave currentof 45 µA (see Figure).

• Using TP1 on the motherboard, set the leakage current monitor in such a way that the display in theAUTO CUT field changes just from 0 to 1 at 45 µA

eff.

Reset jumper to previous condition.

ICC 350


x I nF Standby

• x x = 0 for LF leakage current < 50 µA

x = 1 for LF leakage current > 50 µA.

For adjustment, the test current must be fed according to the instructions.

Adjustment 13 is not assigned on the ICC 300 and ICC 200.

Measurement setup

AE NE

ERBETestbox 2 18

19

INF

ICC

Battery-poweredmeasurement unitonly!

PE

LI

N

Powersupply

110 V115 V230 V

+


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Adjustment 13LF leakage current monitor

TP1


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Adjustment ofICC 350 ZMK Neurotest

Version V2.00ICC 350 TUR Neurotest

Version V2.00


Adjustment of NeurotestboardNeurotest boardEE 30128-070

Jumper JP4 on the front panel is used to activate the display of the feedback frequency of output currentmeasurement and display of the feedback frequency of the remote control are activated.

ATTENTION

On the ZMK version, there is a display only during activation and if the Neurotest circuit is closed. On theTUR version there is a display as soon as the NT LED lights up on the remote control.


SPH Intensity no. Frequency measurement Current measurement

SPH: The Neurotest program is activated.

Intensity no. Set intensity number is 1…5. It corresponds to the intensity number which has been seton the remote control.

Frequency measurement Measurement of feedback frequency of the remote control.

Current measurement Measurement of feedback frequency of the output current measurement.

Setting the feedback frequency of output current measurement

(trimming potentiometer TP 1: Setting the feedback frequency)

The Neurotest board is isolated and actuated via optocoupler. The feedback frequency of the output currentmeasurement also takes place via an optocoupler. The output current pulse is converted into a frequency.This frequency can be measured at test point MP7. Test point MP6 is reference ground. Test points MP6 andMP7 relate to the electronic circuitry of the ICC unit. Without activation, the feedback frequency is 0 Hz.After the pulse time, the feedback frequency is only available at MP7 for a brief period.

Test setup

At the Neurotest output, connect up a test resistor of 1 kOhm, 0.5 W and 1%. On the TUR version, theNeurotest output is between the neutral electrode and the CUT/COAG 2 output. The TUR version is activatedwith the yellow pedal of the dual-pedal footswitch. On the ZMK version the Neurotest output is between theneutral electrode and the Neurotest output. The ZMK version is activated with the ZMK fingerswitch.

The setting is performed at intensity 3. For this setting the set feedback frequency must be adjusted to 73. Ifthe electronic fuse trips, the display of feedback frequency is approx. 40.


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Current measurement

Set Min. Max.

SPH 1 52 42 75

SPH 2 91 81 100

SPH3

(Set value 73)73 63 83

SPH 4 64 54 74

SPH 5 59 49 69

ATTENTION!

Don't forget to remove the jumper!

Check the fusible link for correct rating

F1: Microfuse FF 1/16 /125 V (62 mA), Wickmann Type 19278K

High-voltage test

The high-voltage test is conducted according to the specifications in the test record.

Testing the activation signals

The TUR version is activated with the yellow pedal of the double-pedal footswitch. The ZMK version isactivated with the ZMK fingerswitch.

Performance test on the constant-current circuit

A test resistor of 1k, 0.5W and 1% and a rotary potentiometer of 50k 0.3W are connected in series at theNeurotest output. Measure the square-wave voltage on the 1k test resistor. (1mA corresponds to 1V) Thetolerance range of output currents is +25% to –25%. Larger deviations generate an output error display.



Square-wave output peak current Control range of constant-current source

SPH 1: 5 mA 0R…approx. 20 kOhm





Testing the constant-current source

Slowly set the rotary potentiometer higher from 0R. At a total resistance of approx. 6 kOhm, there is anoutput error display. At approx. 6 kOhm, the output current is constant.

Performance test on output error monitoring.

• At the Neurotest output connect a test resistor of 1 kOhm, 0.5 W and 1%.

• Set SPH 1.

• Activate the unit. When the circuit is interrupted there will be an output error message.

Performance test on the electronic fuse

The output current is monitored constantly. In the event of an excess dose, the electronic fuse trips and vialongitudinal transistor T3 switches off the constant-current source supply voltage. The electronic fuse ismonitored in the interval between the pulses. If the electronic fuse has tripped, this is indicated by themessage ERROR 90 or ERROR 84.

• To trip the electronic fuse: Activate the Neurotest function and briefly connect test point MP9 to MP2.The electronic fuse should respond. The microfuse must not trip.

General information about the self-check

Before activation, or when setting the intensity on the remote control, there is a check on the electronic fusein two steps.

1. Briefly switch on transistor T1 and thus trip the electronic fuse. There is a message ERROR 90 orERROR 84 if the electronic fuse has tripped.

2. Briefly switch on transistor T2 and thus reset the electronic fuse. There is a message if the electronicfuse has not been reset.


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Activation test

Activation of the HF LED on the remote control takes place at intensity setting 0 using the rotary switch onPC board EE 30121-442. At an intensity setting of 1 to 5 the NT LED is actuated by the CPU and the HFLED must not light up. On the TUR version a check must be performed as to whether activation of the HFis inhibited when intensity of 1 ... 5 is set. On the ZMK version, activation of the HF is possible even ifintensity 1 ... 5 has been set.


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Adjustment ofremote control for

Neurotest


Adjustment ofremote control for NeurotestNeurotest boardEE 30121-442

Setting the remote control for Neurotest board EE 30121-442

Jumper JP4 on the front panel is used to activate the display of the feedback frequency of output currentmeasurement and display of the feedback frequency of the remote control are activated.


SPH Intensity no. Frequency measurement Current measurement

ATTENTION!

On the ZMK version, there is a display only during activation and if the Neurotest circuit is closed. On theTUR version there is a display as soon as the NT LED lights up on the remote control.

SPH: The Neurotest program is activated.

Intensity no. Set intensity number is 1…5. Corresponds to the intensity number

which has been set on the remote control.

Frequency measurement Measurement of feedback frequency of the remote control.

Current measurement Measurement of feedback frequency of the output current measurement.

Setting the feedback frequency for intensity setting

(trimming potentiometer TP 1: Setting feedback frequency)

The intensity setting is converted to a frequency. This frequency can be measured at Pin 1 AD654 on IC1.Test point MP6 is reference ground. Frequency is measured using a frequency meter. The setting takesplace at intensity 5 - for this setting the set feedback frequency is adjusted to 38.0 Hz (–0.5 Hz, +0.0 Hz) onthe frequency meter.


Frequency measurement Currency [Hz]

Set Min. Max. Set Min. Max.

SPH 1 7 5 10 200 180 215

SPH 2 14 11 20 105 80 120

SPH3

(Set value 73)24 21 28 62 57 67

SPH 4 32 29 36 45 43 49

SPH 5 38 37 60 38 37 40


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Adjustment ofremote control for NeurotestNeurotest boardEE 30121-442

ATTENTION!

Don’t forget to remove the jumper.

Setting the feedback frequency for intensity adjustment can also be performed without the ICC unit bysupplying +15 V to the remote control and measuring the feedback frequency using the frequency meter.

High-voltage test

The high-voltage test is performed using the specifications in the test record.

Testing the LED display

Actuation of the HF LED is conducted at intensity setting 0 using the rotary switch PC board on EE 30121-442. At an intensity setting of 1 to 5, the NT LED is actuated by the CPU and the HF LED must not light up.The NT LED only lights up when the feedback frequency is in the valid range. Check intensity setting 1…5.


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Adjustment ofactivation

and instrument detection


Adjustment of activationand instrument detectionMIC board 30128-200 (V4.0)

List of units involved

ICC 350 MIC-MIEN V4.0 EE 10128-080

ICC 350 MIC-MIEN-DOKU V4.0 EE 10128-081

ICC 350 MIC-MIEN F V4.0 EE 10128-082

ICC 350 MIC-MIEN Int. V4.0 EE 10128-083

ICC 350 MIC-MIEN Int UL V4.0 EE 10128-215

ICC 350 MIC-MIEN Japan, 100V V4.0 EE 10128-310

Identification of the trimming potentiometers:

Trimming potentiometer TP 1: setting the instrument detection.

Trimming potentiometer TP 2: setting the activation detection.

Valid instrument number

Program no. Instrument Resistance Instrument no.

12 MIC TEM instrument EE 20191-275 10 Ohm ± 1 %; 0,2 W 1

13 MIEN Probe EE 20191-356 30 Ohm ± 1 %; 0,2 W 2

13 MIEN Probe EE 20191-357 30 Ohm ± 1 %; 0,2 W 2

The probes of no. 2 are only suitable for coagulation and CUT remains inhibited.

Display of instrument number


Inr. Nr. p3 nd

Inr. Instrument recognized

No. Instrument number

p3 Power setting AUTO COAG 2

–nd Compressed air valve for needle control is actuated (only MIC)

nd Compressed air valve for needle control is not actuated (only MIC)


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Adjustment of activationand instrument detectionMIC board 30128-200

Setting the instrument detection

• The setting takes place in program 12 MIC.

• Connect a resistor of 51 R, ± 1% and 0.2W to the test line.

ATTENTION!

The original ERBE TEM connecting cable EE 20192-086 has a cable impedance of 1 Ohm per cable, whichproduces a series resistance of 2 Ohms for the instrument detection. In the line to and from the unit theinstrument test line must have a series resistance of < 0.5 Ohm. Since on the V4.00 version only the TEMinstrument no. 1 and MIEN probe no. 1 are connected up, it is sufficient to perform the balance only forthese instruments.

With jumper JP4 on the front panel the measurement display is activated.

Measurement display

AUTO CUT AUTO COAG 1

I measurement I no.

I-measurement Measurement of instrument detection 0…255

I-No. Instrument number

Using trimming potentiometer TP 1, set I measurement to 52 (resistance of 51 R ± 1%; 0.2 W).

Testing the instrument detection

Detection resistance Instrument no. Valid range

0 R 0 0…2

10 R 1 3…20

30 R 2 21…45

51 R 3 set value 52

62 R 4 70…91



Setting of activation detection

Set the trimming potentiometer TP 2 to approximately the center position.

ATTENTION!

Never forget to remove jumper JP4.

Test instructions for program 12 MIC

• Assignment of MIC output socket for the MIC program:

Pin 1: NE 1

Pin 2: NE 2 not assigned

Pin 3: CUT cutting function

Pin 4: Instrument detection between Pin 1 and Pin 4

Pin 5: Activation detection between Pin 1 and Pin 5

• Set and test instrument detection and activation detection:

Test instrument detection together with the TEM instrument EE 20191-275 and connecting cable EE20192-086 in the MIC program.

• Connect up the compressed air supply:

The MIC output socket is active in the MIC program. Connect up to the compressed air supply (max.5 bar). Connect up 10 Ohm detection resistor corresponding to TEM instrument no. 1.

• Test CUT function:

The CUT function is activated with the yellow footswitch.

MIC socket AUTO CUT APM P [Watt]

NE1CUT

Effect 340 W

500 Ohm 40 ± 15 %

ATTENTION!

The measuring system will be damaged beyond repair if the HF lines are connected up to the APM incorrectly.


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The output error display is activated at 40 W and 500 Ohm. Activation of the BIPOLAR CUT functionis also possible without the neutral electrode.

• Compressed air control

At instrument 1 the compressed air valve is opened during CUT activation. The compressed air valvecontrols the needle of the TEM instrument. After activation the needle reset time elapses. After needlereset time has elapsed the compressed air valve closes and the needle is reset. Needle reset time isindicated in test program 23. Check the compressed air valve to make sure that it operates properlyand to ensure there are no leaks.

• Check monopolar coagulation

Activation of the SOFT function and the FORCED function is performed using the blue footswitch.

MIC socket AUTO COAG 2 APM P [Watt]

NE1ICC 350 NE Electrode

SOFT 120 Watt 75 Ohm 120 ± 15 %

FORCED 60 Watt 350 Ohm 60 ± 15 %

Test instructions for program 13 MIEN

• Assignment of the MIC output socket for the MIEN program

Pin 1: NE 1 bipolar

Pin 2: CUT and COAG function bipolar. (MIEN protective circuit).

Pin 3: not assigned

Pin 4: Instrument detection between Pin 1 and Pin 4

Pin 5: Activation detection between Pin 1 and Pin 5

• Test instrument detection.

Test instrument detection together with the MIEN probe EE 20191-305/308 and handlepiece EE20191-306 in the MIEN program.

• Test bipolar CUT function

The CUT function is activated using the yellow footswitch.

ATTENTION!

The measuring system will be damaged beyond repair if the HF lines are connected up to the APM incorrectly.




NE1 CUTEffect 315 Watt

500 Ohm 15 ± 3 (W)

The output error display is activated at 40 W and 500 Ohms. Activation of the bipolar CUT function is alsopossible without the neutral electrode.

• Test bipolar SOFT coagulation

The SOFT function is activated with the blue footswitch.


NE1 CUT SOFT 15 Watt500 Ohm

No-load voltage 84 ± 5 Vp

7 ± 2 (W)

• Test the protective circuit with test program 18

In the event of an error, the protective circuit in the MIEN program prevents an overdose of HFvoltage and HF current. If the output current is too high, the fusible link in the protective circuit trips.The test checks whether the correct fuse is inserted. The manufacturer of the fuse and the fuse ratingcan be found in the parts list.

• Testing the voltage limitation with no load

Activate test program 18.

In the AUTO CUT display panel the set value of HF output voltage is displayed. With the CUT “Up/Down” buttons, the HF output voltage can be adjusted in the range from 260Vp to 500 Vp (±50Vp).

Connect oscilloscope to the MIC output socket NE1 and CUT.

The highest HF peak voltage at the AUTO CUT Effect 3 (15 W) setting is 340 Vp. At this voltage the

protective circuit must not yet impose any limitation.

The protective circuit limits the output voltage from 360 Vp upward. Range in which the limitation

must be activated: 360–450 Vp.

At the setting of 499 Vp the fuse will not trip and the operability of the protective circuit remains

intact.

ATTENTION!

As soon as the voltage limitation is activated, current flows through the protective diodes and the diodes heatup. The duration of the test from the moment of voltage limitation must not exceed 5 seconds or else theprotective diodes break down and the circuit will have to be repaired.


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Voltage limitation at setting of 415 Vp.

ATTENTION! The test duration mustnot exceed 5 seconds!

Voltage limitation at setting of 499 Vp.

ATTENTION! The test duration mustnot exceed 5 seconds!


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Test program no. 17Brightness setting of the 7-segment displays

General description

Using this program, you can adapt the brightness of the 7-segment displays in 10 stages to the lightingconditions of the room.



Int xx

• Int Intensity (brightness) of the displays

• xx Present intensity, adjustable from 1...10.

You can make the intensity brighter using the “Up” (8) key or darker using the “Down” (9) key.

After termination of the test program, store the brightness setting with key 3.


Test program no. 23Changing the delay time withAUTO START

General description

Using this program, you can change the specifications for the delay time when activating AUTO START.

The delay time is the time which passes after the forceps contacted the tissue and the HF generator isactuated.

So that the operating surgeon can know whether the forceps have contacted the tissue, the AUTO BIPO-LAR activation display (blue triangle in the AUTO-BIPOLAR field) switches on at contact. Then the delaytime starts. After the delay time has passed, the HF generator and the activation tone are switched on.

In case of error in the memory medium, the following basic settings have been preset:

ICC 350 and ICC 300: AUTO START 0: 0 seconds,

AUTO START 1: 0.5 seconds,

AUTO START 2: 1 second;

ICC 200: AUTO START: 0.5 seconds.

After starting Test program 23, you will see the following display:


SEt Up tt.t

Time setting

Possible from 0.1 to 10 seconds in the following time steps:

from 0.1 to 2.0 seconds in 0.1 seconds steps

from 2.0 to 10.0 seconds in 0.5 seconds steps.

Procedure for ICC 350

AUTO START Setting range

0 0 greater than/equal to t greater than/equal to 1


2 2 greater than/equal to t greater than/equal to 10 seconds

You can set and store the delay time for every user-specific program 0 to 9 and for every AUTO-STARTtime (0, 1 and 2).

Since the AUTO-START time 0 can be no longer than AUTO-START time 1, it is best to proceed from thelongest time for AUTO START 2 and then set the times for AUTO START 1 and AUTO START 0.


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NOTE

You will find the assignment of keys with the numbers given below on pages 1-4 (Calling up of the testprogram mode) of this Service Manual.

1. Using key 2 Set program number

2. Using key 14 Set AUTO START 2

3. Using “Up” or “Down” key Set the required time


5. Using “Up” or “Down” key Set the required time


7. Using the “Up” or “Down” key Set the required time

8. Using key 1 Store the set values.

Steps 1 to 8 can be repeated individually for every required program.

Then exit the test program using key 3.


AUTO START Setting range



2 2 greater than/equal to t greater than/equal to 10 seconds

For every AUTO START time (0, 1 and 2), you can set and store a delay time. Since the AUTO-START time0 cannot be any longer than the AUTO-START time 1, it is best to proceed from the longest time for AUTOSTART 2 and then set the times for AUTO START 1 and AUTO START 0.







7. Using key 3 Exit the test program and the set valuesare stored.

Test program no. 23Changing the delay time forAUTO START




SEt Up tt.t

For the AUTO START function, you can set and store a delay time.


2. Using key 3 The set values are stored and the test program isexited.

Test program no. 23Changing the delay time forAUTO START

Chapter 2ERROR list

2 ERROR LIST 129 / 266

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ERROR list V 4.XERBOTOM ICC 350 (V4.0, V2.0), ICC 300 (V3.0),ICC 200 (V2.0)

Automatic error detection, indication and documentation

ERBOTOM ICC series high-frequency surgical units are equipped with a device for automatic error detection,indication and documentation (ERROR monitor).

Error detection, indication, documentation

For ERBOTOM ICC series equipment as of software version 2.0 / 4.0, the ERROR monitor can, dependingon the type of equipment and its outfit, detect up to 91 currently occurring errors (ERROR) and indicate themon the display.

Error numbers (ERROR nos.) are assigned to the various errors. If an error is detected, it is immediatelyreported. The error report is both visual and audible.

The error numbers of detected errors are automatically stored chronologically. Since only 10 memory locationsare available, only the last 10 error messages are displayed. If the same error is detected several times in a row,the corresponding error number is then saved only once in consideration of the limited number of availablememory locations. The error numbers documented in memory can be displayed via Test program 2 anddeleted.

Troubleshooting for ICC family equipment

The ICC unit family is equipped with an error detection system which detects and stores the last 10 errorsdetected in an ERROR list. This error memory can be called up via Test program no. 2. The user should thusbe capable of localizing errors himself and deciding whether this is an operating error or an error in theaccessories, which he can possibly eliminate himself, or whether it is necessary to make use of the technicalservice.

If there is a complete failure of the system and no display is visible, the power supply may have beeninterrupted or the voltage supply inside the unit is defective. In such a case, first check whether the outletused is live or a fuse in the house power supply has been tripped (Does a different unit function at thisoutlet?). If the outlet used is live, check the powerline to the unit and replace if necessary. The equipmentfuses on the rear panel should also be checked and replaced if necessary.

ATTENTION!

Only use original fuses of the same specification.

If these efforts bring no results, there is probably an error within the unit. You should then contact thetechnical service.

For a malfunction with a properly functioning display but with no indication of an ERROR number in thedisplay, the error may be located in defective accessories. It is possible, for example, that there may be adefect in the fingerswitch or footswitch, or a disruption in the associated connecting cable. The cause of theerror may be determined by exchanging the accessories used.

To determine other causes of errors, an ERROR number in the unit display indicates the course of furtheraction according to the following table.

2 ERROR LIST130 / 266

ERROR no. 1–13

Errorno. Designation and remedies

1No HF voltage present at the HF voltage sensor. Error in the HF generator.Short circuit in accessories: Replace accessories.Other equipment error: Technical Service.

2HF output voltage too high, error in the HF generator.Equipment error: Technical Service.

3The switched-mode power supply unit supplies no voltage during activation, error in theswitched-mode power supply unit.Equipment error: Technical Service.

4The switched-mode power supply unit supplies too high a voltage upon activation of the STgenerator, error in the switched-mode power supply unit.Equipment error: Technical Service.

5

LF leakage current is > 50 µA and flows into the unit via the neutral electrode.Check positioning of the patient, whether there is contact with the infusion stand or the like.Other defective equipment connected to the patient?Are the potential equalization and grounded conductor OK?

6During the activation phase, the safety shutoff feature output reports "ON".Equipment error: Technical Service.

7During the activation phase, the safety shutoff feature output reports "OFF".Equipment error: Technical Service.

8 not assigned

9Maximum continuous time limit exceeded.Only activate the unit if necessary. The time limit monitor is a safety feature and shouldgenerally only be increased with a strict indication using Test program 10 in the setup.

10Error during activation of the AUTO CUT, no valid front panel setting.Confirm control panel by pressing a key. Select required power setting.

11Error during activation of AUTO COAG 1 or AUTO COAG 2, no valid front panel setting.Confirm control panel by pressing a key. Select required power setting.

12Error during activation of AUTO BIPOLAR, no valid front panel setting.Confirm control panel by pressing a key. Select required power setting.

13

Error during activation of AUTO CUT:- NESSY: measured NE impedance is > 120 ohms.- Using Test program no. 7, split electrodes were set: NE impedance < 10 ohms.Check NE cable.Check NE contact surface: Short circuit? Is NE stuck to metal?If necessary, set required neutral electrode using Test program 7.


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ERROR no. 14–22


14 (not assigned)

15 (not assigned)

16 (not assigned

17Error during activation. HF leakage current > 300 mA.Check position of the patient: Contact points with infusion stand or the like.Otherwise equipment defect: Technical Service.

18Error during activation. 150 mA < HF leakage current < 300 mA.Check position of the patient . Eliminate contact points with infusion stand or the like.Otherwise equipment defect: Technical Service.

19

Error during activation of AUTO CUT and AUTO COAG: NESSY current density error.Check NE cable for interruption.Check contact surface and application point of the NE.Otherwise equipment defect: Technical Service.

20

For AUTO CUT and AUTO COAG: NESSY current symmetry error.Variably high current flowing into the joint phases of the NE.Check cable to the NE (interruption).Check NE contact surface.

21Current symmetry error.See ERROR 20.

22

When switching on the power, AUTO CUT is switched on.Activate unit only after switching on power. Check fingerswitch and footswitch as to whether akey or pedal is stuck or the switch is defective.Otherwise equipment defect: Technical Service.


ERROR no. 23–33


23

Switch on the power, AUTO COAG 1 is switched on.Activate unit only after switching on power. Check fingerswitch and footswitch as to whetherkey or pedal is stuck or switch is defective.Otherwise equipment defect: Technical Service.

24

When switching on the power, AUTO COAG 2 is switched on.Activate unit only after switching on power. Check fingerswitch and footswitch as to whetherkey or pedal is stuck or switch is defective.Otherwise equipment defect: Technical Service.

25

When switching on the power, AUTO BIPOLAR is switched on by footswitch.Activate unit only after switching on power. Check footswitch as to whether key or pedal isstuck or switch is defective.Otherwise equipment defect: Technical Service.

26

Contact is detected when switching on the power. Contact monitor is active.Check the forceps connecting cable or check forceps for a short circuit. The forceps tips aretouching or lying on a conductive base: Isolate forceps.Otherwise equipment defect: Technical Service.

27

Overheating! Internal unit temperature > 100°C. Permissible output power is reduced.Unit generated max. power for a longer period of time.Allow unit to cool down.Coagulation electrode too large?Short circuit or error in accessories?

28

Activation signal for the blue footswitch button already on.Is the blue footswitch button depressed? Is the button or switch stuck? If necessary, brieflyunplug the footswitch as a test.First preselect footswitch on the front panel and then switch on.

29For Spanish version:During activation, a further activation signal is detected.Double activation not permissible.

30Mismatch! Over a time period > 5 sec , the load resistance is < 50 ohms.Check accessories for short circuit.

31Mismatch! The output power is > 100 watts. During activation, the load resistance remainsconstant and < 300 ohms. After a prescribed time, ERROR 31 appears.Check accessories for short circuit.

32Multiple activation detected.No simultaneous activation via several sources.If unsuccessful, unit is then defective. Technical Service.

33At the end of activation, a new activation signal immediately appears.No simultaneous activation via several sources.


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ERROR no. 34–48


34Multiple activation detected during AUTO BIPOLAR .No simultaneous activation via several sources.

35There is already a new activation signal during AUTO BIPOLAR with AUTO STOP or AUTOSTART.No simultaneous activation via several sources.

36

When pressing the BIPOLAR AUTO START key, there is already an AUTO START signal .The contact monitor is activated.see ERROR no. 26.Otherwise equipment defect: Technical Service.

37Error during activation.At the point in time of activation, the power supply unit voltage has not yet dissipated. Powersupply discharge faulty. Equipment defect: Technical Service.

38During AUTO START activation, the contact resistance is < 6 ohms.Inspection of the forceps and supply cable for short circuit.

39 not assigned

40Monitor ST generator time control. Output error: ST time control for FORCE and SPRAY.Actual value > set value plus 20%: Technical Service necessary.

41Like Error 40, butActual value < set value minus 20%: Technical Service necessary.

42Like Error 41, butActual value > set value minus 40%: Technical Service necessary.

43Monitor of ST generator time control.Output error. No frequency feedback: Equipment defect: Technical Service.

44Monitor of the ST generator output voltage.Output error: Equipment defect: Technical Service.

45HF generator error during self-check.HF output voltage too low : Equipment defect: Technical Service.

46Self-check.Error within the permissible limits during comparison of the power supply unit voltage with theHF output voltage. Equipment defect: Technical Service.

47HF generator error during self-check.Like Error 46, but error outside permissible limits.Equipment defect: Technical Service.

48Patient current.No signal from the output current monitor.Equipment defect: Technical Service.


ERROR no. 49–82


49 not assigned

50to 70

A key on the front panel is depressed.Operating field key is depressed or defective during the power start-up phase. If it cannot becorrected, then equipment defect: Technical Service.

71Interface error for ICC 350 DOKU: Start or stop bit error or number of bits incorrect.Equipment defect: Technical Service.

72Interface error for ICC 350 DOKU: Signal in receiving register has not been read out.Equipment defect: Technical Service.

73Interface error for ICC 350 DOKU: Parity sign placed incorrectly.Equipment defect: Technical Service.

74Interface error for ICC 350 DOKU: No connection to PC available.Equipment defect: Technical Service.

75Interface error for ICC 350 DOKU: Sign stays in transmitter buffer. SIO module not transmitting.Equipment defect: Technical Service.

76Interface error for ICC 350 DOKU: Interface storage takes too long; hard disk is too slow.Equipment defect: Technical Service.

77to 79

not assigned

80ICC 350 NEUROTEST: No valid frequency for the 5-stage intensity setting.Replace remote control.Otherwise equipment defect: Technical Service.

81ICC 350 NEUROTEST: The intensity setting was set to 0 during activation.Do not set anything during activation.Otherwise equipment defect: Technical Service.

82ICC 350 NEUROTEST: NESSY measurement: NE impedance > 120 ohms.Test the neutral electrode and supply line or position of the NE on the patient.Otherwise equipment defect: Technical Service.

2 ERROR LIST 135/ 266

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ERROR no. 83–91


83ICC 350 NEUROTEST: Output current too high, but still within the permissible limits.Equipment defect: Technical Service.

84ICC 350 NEUROTEST: Output current too high; outside permissible limits.Equipment defect: Technical Service.

85

ICC 350 NEUROTEST: No output current. Interruption of the circuit or failure of the frequencyfeedback system.Check the neurotest cable supply lines or the handle, NE and cable and replace ifnecessary.Otherwise equipment defect: Technical Service.

86

ICC 350 NEUROTEST: Output current too low, but within the permissible limits.Check the neurotest cable supply lines, or the handle, NE and cable, and replace ifnecessary.Otherwise equipment defect: Technical Service.

87ICC 350 NEUROTEST: Output current too low; current is below the permissible limit.Check neurotest cable.Otherwise equipment defect: Technical Service.

88ICC 350 NEUROTEST: Max. time limit has run out. The time limit monitor is a safety measure.Only activate unit if necessary.

89ICC 350 NEUROTEST: When switching on the power, already a neurotest activation signal.Equipment defect: Technical Service.

90ICC 350 NEUROTEST: Electronic fuse triggered or frequency feedback system has failed.Equipment defect: Technical Service.

91

ICC 350 NEUROTEST: After switching on the neurotest function using the intensity adjuster, atest determined that the electronic fuse was not triggered or the frequency feedback systemhas failed.Equipment defect: Technical Service.

Chapter 3Circuit description

139 / 2663 CIRCUIT DESCRIPTION

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Motherboard

The following functions are also found on the motherboard:

• Starting current limitation

• Supply voltage changeover and power rectification

• Power transformer for low voltage supply

• Rectifier for low voltage

• Chipselect generation and level adaptation of TTL level to 15 volt level for CMOS components.

• Generation of the external control bus and of signal lines from the data from PIO outputs

• HF leakage current measurement

• HF leakage current limitation

• Changeover between floating and capacitance-grounded output

• Input circuit for the footswitch

• Various level adaptations.

The motherboard detects the other PCBs via connectors and contacts them.

Starting current limitation

The supply voltage moves from the power supply to the motherboard via the connector J 11.

Immediately after switching on the ICC, the supply unit capacitors are charged which causes a heavypower surge by which, without protective measures, the fuses for the in-house electrical system would betriggered.

Therefore a starting current limitation has been realized on the motherboard which limits the current peakto noncritical values after switching on.

The corresponding power current first flows into the ICC via the resistor R5 and the fuse F1. The relaycontacts REL 1 are still briefly opened. Power current is therefore temporarily limited to noncritical valuesdue to resistor R5.

As soon as the 24 volt supply voltage is available, relay REL 1 can pick up, bridges resistor R5 and fuse F1with its relay contacts, and relieves both of them. This short span of time is sufficient to effectively limit thestarting power surge.

LED D2 lights red when the relay REL 1 is actuated and thus serves as a control.

Supply voltage switchover and power rectification

The unit can be changed over either to the 230 volt or 115 volt supply voltage range. The remaining voltagedeviations within the specification are offset by the controlled power supply units.

The supply voltage can be switched over by shifting the connectors J 16 to J 22.

In the 230 volt range, the bridge-connected rectifier BR1 functions as intended as a true bridge circuit. Thewire bridges must be connected as follows:

140 / 266 3 CIRCUIT DESCRIPTION

J 15 free

J 16–J 20 grey

J 17–J 21 brown

J 18–J 22 yellow

J 19 free

In the 115 volt range, the bridge-connected rectifier BR1 operates with the electrolyte capacitors C6, C7 asa voltage doubler. The wire bridges must be connected as follows:

J 15–J 20 grey

J 16 free

J 17 free

J 18–J 21 brown

J 19–J 22 yellow

For the low voltage supply, there is a transformer TR 1 with rectifier BR2 and filter capacitor C15 on themotherboard. Here an unregulated DC voltage is provided in the 24 volt range.

Since data are present on the databus for all parts of the circuit simultaneously, it is necessary to separatelydetermine for which part of the circuit the currently output data is intended. This is realized by the “Chipselectmethod” by which the chip to be addressed is selected and addressed using a special “Chipselect signal.”

This signal activates only one among a number of addressable modules. These signals are generated withinthe Multiplexer IC 4 and converted in the transistor arrays IC10 and IC11 to 15 volt CMOS level.

The PIO (Parallel Input Output module) produces data in a brief period of time for many different targetassemblies. While the data are only present briefly at the PIOs, the data for target assemblies should bepresent longer. For this an independent external control bus and independent control lines are used. Thedata for the signal lines are stored in the D-flipflops IC2 and IC3 and brought to the 15 volt CMOS level inthe transistor arrays IC8 and IC9.

For the external control bus, the PIO data only need to be brought to the 15 volt CMOS level in IC7.

Limitation of the high frequency leakage currents

High frequency leakage currents are effectively limited in the ICC. The transformer UE1 is used for limitation.

All lines which lead to a high-frequency output socket on the ICC are directed via transformer UE1. If nohigh frequency leakage currents occur, the HF current flows from the generator via the patient to the neutralelectrode and via the transformer UE1 back to the generator completely.

Therefore ideally, the current flowing away is equal to the current flowing back. The windings of thetransformer UE1 are switched in such a way that the resulting magnetic field is canceled by the currentflowing back and forth. Thus the windings of this transformer have no inductivity; the current can flowunimpeded.

However, if high-frequency leakage currents do occur within the patient circuit, the current flowing backand forth is generally not equal. The magnetic fields in the transformer UE1 do not cancel each other out;

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an inductivity of the coils results which limits the high-frequency leakage current with this inductiveimpedance.

Monitoring the high-frequency leakage currents

As intended, the high-frequency current should only be used for cutting or coagulating tissue. To do this, itmust flow to the active electrode in a small area and with a high current density, and flow back again fromthe neutral electrode over a large area and with a low current density.

However, if the body of the patient is in contact with another electrically conductive object, the current mayalso take an undesirable path and, for example, cause a burn there. These undesirable currents are known as“leakage currents”. It is therefore important to know whether such a leakage current is flowing and howlarge it is.

Such leakage current cannot simply disappear, but must instead always flow back to the generator. Thelargest proportion of these high-frequency leakage currents flow back to the generator via the power cableand the grounded conductor.

Since all power lines and the grounded conductor are directed through the ring core of the coil L1, acorresponding high frequency voltage is induced if HF leakage current is present in the coil L1, which isrectified with diode D1, restricted with D6, D7 and smoothed in capacitor C13. For further processing, thisDC voltage is fed to the processor system via the isolation amplifier IC12.

Changeover between flowing and capacitance-grounded output

High-frequency surgical units are generally available either in “capacitance ground of the neutral electrode”or “floating neutral electrode” connection systems, whereby no components are integrated between theconnection to the neutral electrode and chassis in the latter connection system.

Both connection systems have advantages and disadvantages.

The advantage of capacitance ground is that the feed line from the neutral electrode to the patient is groundedat a high frequency via the capacitor and the risk of burns is reduced. However, it is a disadvantage thatimpermissible low-frequency leakage currents may flow through this capacitor during cardiac operations.

If the neutral electrode is operated as floating, on the other hand, the low-frequency leakage currents can bekept very easily below the limit value of 10 or 50 mA during cardiac operations, but the risk of burns isincreased in this connection system since the line from the neutral electrode is about half the high frequencyvoltage of the generator.

With the ICC high-frequency surgical units, the low-frequency leakage current to the patient is measured.At the first malfunction, this must not exceed 50 mA. Once this condition is ensured, the unit is permittedto carry the CF designation (Cardiac Floating). If the possible low-frequency leakage current is under 500mA in the first case of malfunction, the unit is therefore not suitable for operations on the heart and has thedesignation BF (Body Floating).

Initially the ICC is capacitance-grounded via capacitors C30 and C31 and the relay contact REL 2. Theadvantages of capacitance ground are fully exploited. The low-frequency leakage current is measured viathe prescribed simulation R25, C28. If for any reason a low-frequency leakage current should appear, it isthen evaluated. If it exceeds the limit of 50 mA, the relay contacts REL 2 are then opened and thus a low-frequency leakage current can no longer flow. The ICC thus fulfills the CF requirement for cardiac surgery

Motherboard


in every situation.

The voltage occurring in the simulation is proportional to the current and is compared in the operationamplifier IC14 functioning as a comparator to the maximum permissible value that is prescribed andadjustable via the resistor divider R22 and TP1. The signal for switching over the relay REL 2 is present atthe BF / CF output.

Footswitch input circuit

The footswitch is operated at a DC voltage of 15 volts via a multipole line. Since the footswitch connection,due to its length of up to several meters, can also function as a receiving antenna and absorb interferences,an RC low-pass is connected directly to the input sockets of the ICC which severely dampens high interferencefrequencies. The footswitch signals are then regenerated using the buffer IC 13.

For further processing in the processor, the output signals from IC 13 are adapted to the TTL level of theprocessor. To do this, the noninverting buffer IC5 is used.

Further signals are converted in the same manner from 15 volt CMOS level to the TTL level in the buffersIC1 and IC6.

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CPU boardSlot J1

The following functions are located on the PCB:

• The CPU with RAM and EPROM

• The clock generator

• The voltage supply monitor

• The digital input and output via Parallel Input/Output modules (PIO)

• Analog inputs via an A/D converter

• The Chipselect generation

• The safety interlock signal for controlling the activation signals.

As the central processing unit (CPU), the CMOS microprocessor Z84 C00 (IC1) is used together with theEPROM 27 C 512 as the program memory (IC3) and the battery-buffered RAM 5864 as the main memoryand constant memory (IC2)

The clock pulse for operation of the computer is produced in the quartz clock generator IC16 and then processedin the two D-flipflops IC13 to a half-frequency, counterphase clock.

In case of a breakdown of the supply voltage, the current computer data must still be “saved” and stored in thebattery-buffered RAM. All these tasks are supported by the supervisor circuit IC10 (MAX 691).

The supply voltage is monitored via the resistor voltage divider R3, R4 and the “Powerfail” input (Pin 9,IC10). The data are buffered by a 3 volt lithium battery BT1 which is connected at Pin 1 of the IC10. Thecircuit also monitors the voltage of this buffer battery. When switching on, the circuit affects a reset of thecomputer system to a specific initial status and provides the monitoring and functional capability through anintegrated “watchdog” circuit.

In addition, the +5 volt supply voltage is also monitored in a separate circuit via resistor R9, diode D1, buffercapacitor C13 and resistor R7 via the PIO IC6, Pin 27.

The digital inputs and outputs of the computer are taken care of by the Parallel Input/Output circuits (PIOs,IC4 to IC7). The input and output ports are specified and connected by the program.

Analog dimensions, processed by the processor, move via the level adaptation (resistor network RN1, resistorsR15 to R18) and simultaneous low-pass (capacitors C16 to C19) to the 4-channel analog-digital converterIC14, from whence the data are available to the processor.

Since all system data are present together at the databus, the system must be able to address the target modulesto which the data apply. This occurs in a processor system by means of the Chipselect lines by which veryspecific modules can be addressed via the assistance of “selection signals”.

The Chipselect signals are created in the decoder IC9 from the addresses A3, A4 and A5. Depending on theaddress, only one output line each is switched to logical low.

All signals from the various fingerswitches and footswitches are summarized and verified in a safety interlocksignal as to whether any impermissible overlappings or impermissible conditions are produced. If noimpermissible overlappings are determined, the safety interlock signal generates a signal which identifies thepassed on data as save. This logic is accepted by the programmable controller IC17.

144/ 266 3 CIRCUIT DESCRIPTION

Low voltage supplySlot J2

The following assemblies are located on the PCB:

• Voltage regulator for +24 volts



• Voltage regulator for –15 volts

• Three sound generators for the acoustic signals

• Circuit for tone selection

• Tone output amplifier with volume control.

Voltage regulator for +24 volts

The unstabilized DC voltage, gained on the motherboard via transformer TR1 and bridge-connected rectifierBR2, moves to the input of a switched-mode power supply unit. This consists of the integrated switchingcontroller IC3, the memory choke L1 and the free-wheeling diode D1 with the necessary wiring. Theoutput voltage is adjusted via the voltage divider R22, R23.

At the output of the switching controller, a stabilized DC voltage of +24 volts is available. The presence ofthis voltage is indicated by the LED6.

This voltage is mainly used to operate the relays in the surgical unit.

Voltage regulation for +15 volts

The instable input voltage, the presence of which is indicated by LED 4, moves to the switchingcontroller IC 1. The circuit extensively corresponds to the +24 volt regulation, however the transformerUE 1 is used here as the memory choke which simultaneously taps a part of the connector voltageoccurring there for the operation of the – 15 volt regulation.

The output voltage of 15 volts prescribed by the divider ratio of the resistors R30 and R31 is used tooperate the CMOS circuits and the operation amplifier. Its proper presence is signaled by the LED 2.

Voltage regulation for – 15 volts

The negative operation voltage of – 15 volts is mainly required for the negative voltage supply of theoperation amplifier. Since the capacity of this voltage source is just minimal due to the circuit, a simpleregulating circuit could be used. The principle of analog regulation is thus sufficient, and the resultinglosses are minimal.

The switched-mode voltage tapped from the switched-mode power unit for + 15 volts at transformer UE 1is rectified through the diode D6 such that a negative DC voltage is present at the input of the analogregulator IC10. This voltage is stabilized by the fixed voltage controller IC10 to –15 volts. The properpresence of this voltage is indicated by the LED1.


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Voltage regulation for +5 volts

A controlled voltage of +5 volts is mainly required to operate the CPU, the TTL logic modules and the lightdisplays on the front panel. Since the capacity of this voltage source is relatively high, a switched-modepower supply unit was used.

The circuit corresponds extensively to that of the +24 volt regulator: The instable input voltage is stabilizedto +5 volts by means of the regulator IC6. The proper presence of the output voltage is indicated by theLED3.

From Pin 3 of the integrated switching controller IC1 of the +15 volt voltage regulation, a connection leadsto the transistor T2 of the +5 volt control. In this way it is possible to block the function of the +5 volt powersupply unit as long as the +15 volt supply is not available. This measure is used to increase the functionalsecurity of the unit.

Tone generators for the signal tones

The tone generators are used to audibly signal all operating and danger conditions when operating thesurgical unit. To do this, three tone generators are available, the signals of which may be mixed with oneanother to produce pleasant and differing tones in this way.

The timer IC4 produces the tone frequency for the first tone, which can be adjusted using the trimpotentiometer TP2 at 493 Hz.

Timer IC5 produces the tone frequency for the second tone, which can be adjusted using the trimpotentiometer TP3 at 414 Hz.

Timer IC7 produces the tone frequency for the third tone, which can be adjusted using the trim potentiometerTP4 at 329 Hz.

The generated tone frequencies can now be switched on selectively using the analog switches on the IC8and mixed with one another. The combination of individual tones is prescribed by the program and isselected using the D-flipflops of the IC9 as a target memory and switched through using the analog switchesof the IC8. Via resistors R5, R7, R9, R24, R10 and R16, the tone frequencies are combined so that onesound can result from several individual frequencies.

The volume of the operating tones can be adjusted using a potentiometer which is connected in parallel toresistor R11.

The volume of the alarms must not be reduced. For this reason, the reduction of amplitudes by means of theintegrated analog switch IC8, Pin 10-11, which is also controlled by the CPU, can be passed by so that thetone signal in this case is reproduced with the maximum amplitude at the tone output amplifier IC 2.

The R37, C9, C10, C11, R39 network is used for sound shaping, so that a pleasant sound results in theloudspeaker which follows the tone amplifier.

Low voltage supplySlot J2


The following assemblies are found on the PCB:

• Measured value acquisition and adjustment

• The contact monitor

• Actuation and power setting of the ST output stage

• Actuation of the power module

• Synchronization of the QK output stage

• Hardware electronic safety circuits

• Spark control

• Actuation of the QK output stage.

Measured value acquisition and adjustment

The measurement signals, which are triggered mainly to the Senso-board as well as to other parts of theentire unit, move first to the control board where they usually must still be adjusted in order to finally moveon to the processor.

For most inputs, an input circuit consists of a variable voltage divider with which the signal voltages can be adjusted.

Various signal voltages, the values of which are needed very quickly by the processor system, proceed viathe amplifiers IC1 and IC2 directly to the processor. (See diagram page 2/3).

Other signals which are not required for fast processing can be fed to the processor system in multiplexoperation. (Circuit diagram page 3/3). These signals are fed to the 16-channel multiplex IC 3, scanned inchronological order, then amplified in the operation amplifier IC1 and only then fed one after another to theprocessor system (output ANALOG 4).

The individual operating voltages, for example, are determined in this way:

The +15 volt operating voltage is fed via the resistor divider R39, R40 to the multiplexer.

The +24 volt operating voltage is fed via the resistor divider R41, R42 to the multiplexer.

The –15 volt operating voltage is first fed via R31 to the operation amplifier IC2 by inverting it. Now thevoltage can also be processed as a positive parameter via the multiplexer which only switches throughpositive signals.

The multiplexer IC3 receives its address actuation A0 to A3 from the control bus via the target memory (D-flipflop) IC19.

The contact monitor

In the bipolar operating mode, it is necessary that the generator be switched on via the forceps whenbiological tissue is found between the forceps tips. This is the purpose of the contact monitor. It shouldswitch on the generator at a tissue impedance of 2.5 kOhm.

In principle, two starting points can be specified and adjusted. The appropriate valid area is prescribed bythe control bus, stored in target memory IC20 and switched through there according to the activated output(BER_1 or BER_2).

Control boardSlot J3


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For example, if area 1 is activated, the emitter from transistor T2 is set high and gives its output voltage viathe trim potentiometer TP 11, resistor R45 and diode D2 to the measurement line U_NETZT, which alsoleads at the power module to the sensor line of the switched-mode power supply's output voltage, but at thesame time also to the measurement system of the processor (trim potentiometer TP1 on the control board).

Transistor T2 can therefore be regarded as an extra-low voltage power supply, the output voltage of whichthe HF generator of the power module uses to produce a minimal HF voltage and emit this as a test voltageto the bipolar socket.

The internal impedance of this mini power supply unit is adjusted via the trim potentiometer TP11.

If the generator is now loaded with the tissue in the forceps (or with a 2.5 kOhm impedance), the supplyvoltage at the internal impedance of the mini power supply unit collapses by a specific amount.

This voltage collapse is measured by the processor system and compared with the prescribed set values. Ifthey agree, the main power supply unit is switched on and the HF generator supplies the preset power.

The mini power supply unit cannot be fed in reverse due to the diode D2 (protective diode).

Since the internal impedance can be changed via the trim potentiometer TP11, the starting point of thecontact monitor can be adjusted here relative to the loaded impedance of the generator (tissue impendance).

Actuation and power setting of the ST output stage

The instruction to actuate the ST output stage arrives as a digital word from the control bus. From this, inthe digital-analog converter IC8, a DC voltage results which is transformed into a specific frequency in thevoltage frequency converter IC15, which can be adjusted using the trim potentiometer TP17.

The clock pulse generated in this way is the repetition frequency of the ST output stage actuation.

The pulse length of each individual actuation pulse is taken from the repetition frequency. Using the EXORof the IC12, a monoflop is realized with which the pulse length of the actuation pulse can be adjusted usingthe trim potentiometer TP16. After a steepening of the edge, the actuation pulse TSI_STE is available atoutput 11 of the EXOR IC12.

The generator power can be adjusted via the repetition frequency.

Actuation of the power module

The power generator of the power module is a feedback generator in principle which receives its actuationpulse from the control board. The generator, however, does not begin to oscillate itself, but must instead bestarted by a pulse.

The circuit receives the start-up signal and thus the necessary starting pulse from the processor via its PIOon the CPU board and the transistor array IC8 on the motherboard.

The HF_EIN signal is directed to the comparator IC14 on the control board, the output of which remains atlogical HIGH during activation.

When starting up, the ascending signal is differentiated via the RC element R19, C73 and moves to the gateof the transistor T4 which then briefly connects through and triggers the monoflop IC16. This is the startingpulse at which the generator begins to operate. Using the trim potentiometer TP15, the pulse length of thefirst monoflop in the IC16 can be set and resulting in a symmetrical sine-wave characteristic for the generatorsignal (adaptation to the parallel oscillating circuit).



The resetting of the first monoflop IC16 triggers a secondary pulse in the second monoflop IC16 whichrepresents the true actuation pulse for the output stage driver. The length of this actuation pulse is adjustableusing the trim potentiometer TP14.

The power module generator is therefore always only initiated at the start of a half oscillation through theactuation pulse. Due to the oscillating circuit as load resistance, the oscillation is extended into a completesine wave.

For all further oscillations during an activation phase, the generator is fed back via the resulting sinussignal. A part of the output voltage U_PRIM of the parallel circuit is directed to the comparator IC14, theoutput pulses of which now trigger the monoflops IC16.

The power module generator therefore continues to oscillate as a feedback generator until the activationsignal HF_EIN is reaccepted by the processor.

In this way, it is ensured that the generator always oscillates exactly at the resonance frequency of theoscillating circuit and the operating frequency need not be manually adapted to the production-relatedtolerances of the oscillating circuit elements.

Synchronization of the QK output stage

The quasi-complementary output stage operates at a serial oscillating circuit (on the power module) toproduce the required sine-wave current. This serial circuit affects the current in the QK output stage like aflywheel and forces the temporal characteristic of the current to a certain extent.

Due to the improved efficiency and to protect the QK output stage, the transistors should always be switchedover at the same time that the current in the serial circuit has just made a zero crossing. This then reducesthe losses in the transistors.

This requirement can best be met according to the principle of feedback. Such a circuit principle hasalready been realized in the actuation of the power module. There too, the advantages of digital controlsignals with their low electrical power consumption and its versatility could be combined with the feedbackfor a generator of high efficiency.

The generator cannot start by itself; it needs a starting circuit. The digital oscillator IC18 is a free-wheelingoscillator, the frequency of which should be as close as possible to the frequency of the serial circuit. Itsoutput signal is directed to the priority encoder IC11. As long as no current flows in the QK output stage,the measurement signal of the current U_IHP is zero (measurement point MP1). The comparator IC9detects no current at input 9, therefore its output signal is low and the monoflop IC13 produces no pulses.Its output is then continuously low and thus also the selector S1 of the priority encoder IC11. As a result,the inputs IA2 and IA3 are switched through to the output. In this way, the signal for the starting circui IC18or actuating the QK output stage is switched at the start.

Once the QK output stage has “started up”, a current is produced there which, at sufficient level, exceedsthe threshold of the comparator IC9, Pin 10. Since the current in the QK output stage is half-wave-shaped,a pulse results at the output of the comparator with the frequency of the QK output stage. This pulsetriggers the monoflop IC13 at input 4. The ON time has been selected somewhat longer than the periodlength of the HF signal of the QK output stage, so that the monoflop does not drop out as long as pulsesfrom the generated HF retrigger this monoflop (principle of the watchdog circuit). The monoflop increasesthe selector input of the priority encoder IC11 to high-level. In this way, the signal from the start generator



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is no longer switched through for actuation of the QK output stage, but instead the output signal of thecomparator IC9, PIN 12.

This comparator detects the zero crossings of the high frequency current of the QK output stage and providesa pulse at the rate of the HF at the priority encoder which switches this rate through to the actuation withsufficient current flow of the output stage. In this way, the actuation has now been switched over from free-wheeling by means of the start generator in a no-load case to feedback current control in a load case.

Hardware electronic safety circuits

The current from the QK output stage is measured one more time:

First the measurement voltage is divided by means of the divider R57, R61, then rectified using diode D10and an average is generated using the time constants from the resistor R50 and the capacitor C10. As aresult, the comparison voltage from the divider is present at the input of the comparator IC4, on the onehand, and on the other, the average of a voltage which corresponds to the average current of the outputstage. If the average output stage current exceeds the set threshold, the comparator tilts. Its output signalblocks actuation of the output stage via the AND gate IC7, Pin 4, and the QK output stage is blocked for aspecific minimum time prescribed by the monoflop IC10, part 2. In this way, the circuit is provided with arecovery time and a pump effect is avoided.

This is therefore an electronic fuse for the QK output stage.

In a similar manner, further measurement dimensions are monitored not only through software, but alsothrough hardware:

Voltage and current of the patient circuit are directed via their parameters UP_HF and IP_HF from theSenso-board on the comparator IC6. This also applies to the voltage from the power supply unit U_NETZTand its current U_INT from the power module.

The integrated module IC6 is a comparator, the threshold voltage of which can be preset as a digital wordvia the control bus. In this way, the threshold voltage can be adapted to current requirements prescribed bythe processor. The comparator compares the analog instantaneous values with those limit values set by theprocessor and passes its Yes/No decisions on to the NOR circuit IC5. There the signals are summarized anddirected to gate IC7. If one single parameter has exceeded its limit value, the QK output stage actuation isblocked by the AND circuit IC7. At the same time, the monoflop IC10, Part 1, is triggered, maintaining theblockade for a specific minimum time, so that a pump effect caused by switching off and back on again tooquickly is avoided.

Via the second part of the AND circuit IC7, further important enable signals are controlled for the QKoutput stage:

• Is there an enable signal from the processor?

• Is the safety interlock signal giving its enable?

• Is there currently no reset of the processor?

If any of these questions can be answered with NO, the QK output stage is blocked.

The spark control

Several ICC units offer both a control of the HF output voltage as well as optionally a control of the



sparking which occurs during the cutting and coagulation process at the active electrode. Both controlprinciples have concrete applications.

The control of spark intensity can be activated via the “HIGH CUT” key.

On the Senso-board, the DC voltage U_FUNKE occurring during a spark is gathered via an isolationamplifier (description there) and directed to the control-board.

The required set value of the spark intensity is transmitted via the control bus to the digital analog converterIC8. Its analog output signal is combined and compared at the comparator IC4 with the actual value of thespark U_FUNKE. If the actual value is greater than the set value, output 12 tilts to frame potential andilluminates the red LED D1. In addition, the output signal moves to the input Pin 2 of the NOR circuit IC5.The gate IC7 with the monoflop IC10 switches off the QK output stage for a minimum period of time. Inthis way, the supply voltage for the HF generator is reduced and therefore also the intensity of the spark.

Actuation of the QK output stage

The MOS field effect transistors of the quasi-complementary output stage require brief start or stop pulsesfor their actuation during the zero crossing of the sinusoidal output current.

As is known from the section “Synchronization of the QK output stage”, there is a pulse at the output of thepriority encoder IC11 which is already synchronous to the zero crossings of the output current. This pulsemust now be prepared in such a way that a start or stop pulse is produced for each of the two output stagetransistors at the right point in time respectively.

If one assumes that neither of the two QK transistors are switched conductively after a pause, Transistor Afirst requires a start pulse. The transistor then switches on and produces a sinusoidal half-wave within theoscillating circuit of the QK output. At the end of this half-wave, this Transistor A must be switched backoff using a brief pulse. Then Transistor B should take over the second half-wave and be conductive. ThereforeTransistor B requires its short start pulse after Transistor A has switched off. It remains conductive until thezero crossing of the second half-wave and must be shut off again at its end using a pulse.

In this way, a complete sine-wave oscillation has resulted and the process repeats itself constantly until theQK output stage is switched off.

The output of the circuit IC11 produces a pulse with every zero crossing on the sinus current. However, theactuation requires, as described, two pulses during a half-wave, specifically a start and a stop pulse. It istherefore necessary to double the frequency of the available pulse. This occurs in the EXOR gate IC12together with the RC low-pass R67, C15. Using this low pass, the signal at input 1 of gate IC12 is slightlydelayed compared to input 2, which leads to an output pulse with the length of the delay time for everychange in the input signal. The input frequency is thus doubled. The resulting pulses are extremely short.

By means of small, though non-negligible running times in the circuit, the signal received in the meantimeis no longer completely synchronous to the current zero crossings of the output signal. Using the monoflopIC13, the correct phase relationship of the actuation pulses to the output current can be re-established byspecifically extending the pulses. The necessary delay time can be adjusted using the trim potentiometerTP13.

By halving the previously double frequency in D-flipflop IC21, Part 2, the original operating frequency ofthe QK output stage is recreated with a pulse duty factor of 1:1. Output pin 13 has a HIGH level, whileTransistor A is addressed. The inverted output 12 has a HIGH level, while Transistor B of the QK output



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stage is addressed. The output signals A and B thus serve in the selection of currently active transistors.

From the previously doubled frequency, the short start and stop pulses are produced for the respectivelyactive transistor.

The first part of the monoflop IC17 produces the start pulse, the second part the stop pulse.

The first part of the D-flipflop IC21 is additionally actuated by an ON_OFF signal for the safety circuits. Inthis way, all start pulses can be suppressed on the one hand, while on the other, it is ensured that thetransistors can still be shut off in any case.

The arrangement of selection pulses for the individual transistors with the on/off pulses is made in theNAND gate IC1 on the QK output stage.



QC power stageSlot J4

The QC output stage (30128- 528)

The following functions are located on the PCB:

• Decoding of the switch signals

• Power-on time-delay circuit

• Preamplifier, driver and electrical isolation of actuation

• Clamping circuit

• Push-pull output stage.

The output stage acts as a power amplifier for high-frequency signals, as is required, for example, in switched-mode power supply units and high-frequency surgical units. This output stage is designed for push-pulloperation on account of the greater efficiency and larger possible output power. As there are frequentlyproblems in procuring and storing identical P and N channel transistors - which are required for a push-pulloutput stage - it is advantageous to be able to use two transistors of the same type. This circuit is then calleda quasi complementary output stage, or QC output stage for short.

The aim of the development was to produce an output stage with the highest possible efficiency and asinusoidal output signal with the smallest possible proportion of harmonic frequencies. Actuation shouldrequire as low a power as possible and preferably be possible in digital mode so that the transistors can beused in switching operation with low power loss.

All the stated requirements led to the present circuit.

Circuit principle

The complementary output stage consists of two N channel MOS-FET transistors, T1 and T2, which areoperated alternately as switches. The amplified digital output signal is present at the source of transistor T1and simultaneously at the drain of transistor T2, since these connections are conductively connected to eachother. However, since a sinusoidal output signal is a required condition, the output of the output stage isswitched to an oscillating circuit (which is located on the next PCB).

The QC output stage is actuated between the gate and source of the respective transistor, which alwaysleads to electric potential problems with this circuit logic, since the actuation signal has to be superimposedon the output signal.

This problem can be solved by actuating the relevant transistor via a transformer. If this method is used forboth output stage transistors, it has the advantage that the actuation circuit can be completely isolated fromthe output circuit and the high output voltages occurring in the event of a defect cannot damage the actuationcircuit.

The disadvantage, however, is that the transformer cannot transmit any DC signals.

This is where the gate-source capacitance of the MOS-FETs proves useful. Since this capacitance is of highquality, the gate-source capacitance can maintain an applied charge for a sufficient length of time. Theclamping circuit consisting of diodes D8, D9, D10 and D5, D6, D7 has the effect that the gate-sourcecapacitance can be charged with a short positive pulse. This positive pulse is fed via diode D8 to the gate oftransistor T1 and charges the GS capacitance sufficiently for the transistor to be switched to a conductingstate.


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This charge cannot then flow back into the actuation circuit after the actuation pulse has ended, since diodeD8 acts as a block and diode D9 also permits no reverse current due to its Z-diode characteristic. The resultis that the transistor remains in a conducting state as long as its GS capacitance has sufficient charge.

If, on the other hand, a sufficiently large negative pulse comes from the actuation circuit, the Z-diodevoltage at diode D9 is exceeded and the GS capacitance can be discharged again. Transistor T1 thereby actsas a block.

It can thus be seen that a MOS-FET transistor can be operated in switching mode via such a clampingcircuit by means of a pulse transformer with short start and stop pulses.

Capacitors C4 and C5 are connected in parallel to the GS capacitance and support the effect described.Since their capacitance is significantly higher than the corresponding gate-source capacitances, the circuitbecomes largely independent of parameter scatter of the gate-source capacitances of different productionbatches.

It is the task of actuation to time the actuation process in such a way that each of the two power transistorsreceives a short start pulse and, after a defined pause, a stop pulse at the right time. It must be ensured thatthe two transistors are never switched to a conducting state simultaneously, since a short circuit of thesupply voltage would result!

Circuit description

The actuation signals are generated on the control board (30128-357). These signals are short pulses forstarting and stopping the output stage transistors and two additional pulses, one for selecting the upperoutput stage transistor and the other for selecting the lower output stage transistor.

These pulses come via connector J1 to the NAND gates ½ IC1 and IC4 on the QC board. There the "Start"and "Transistor A" pulses, for example, are brought together (as are "Stop" and "Transistor A"). The followingpulse sequences are thus present at the outputs of IC 1:

• Start transistor A

• Stop transistor A

• Start transistor B

• Stop transistor B.

These pulses are each preamplified in the triply parallel gates of the NOR circuits IC 2 and IC3. The outputsof IC2 and IC3 actuate the driver stages, each consisting of two parallel transistors T3 to T10. The outputsignal of the four parallel drivers is then amplified to such a level that the pulse transformers UE1 and UE2can be operated with sufficient energy.

In the case of a complementary output stage, it must be strictly ensured that the two output stage transistorsare not simultaneously in the activated state, as this would cause a short circuit across the two transistorsand damage the output stage beyond repair.

Therefore, the stop pulses generally have the highest priority. They ensure a safe state of the output stageduring undefined operation. The start pulses are separated in the actuation logic to ensure that only oneoutput stage transistor is actuated at any one time.

An undefined state could, however, occur in rare cases if the +15 V operating voltage is too low at any point


in time. For this possibility, in which the logic might operate undefined, a "Power-on time-delay circuit"avoids undefined starting of the output stage transistor.

With transistor T11, the supply voltage VDD = + 15 V is monitored. If this voltage is missing, capacitor C10is quickly discharged via diode D12. This logical LO signal is sent to the two NAND gates ½ IC 1 andblocks the starting pulses. If the supply voltage is present, capacitor C10 is charged to 15 V via transistorT11 and resistor R8 in a predefined delay time. This HI signal reaches the two NAND gates again (seeabove) and enables the start pulses for the output stage.

On the secondary side of the driver transformers, short, steep spikes occur, initially a positive pulse forstarting, then a negative pulse for stopping the corresponding output stage transistor.

These spikes reach the gates of the MOS-FET transistors via the clamping circuit described above, andswitch the gates.

The amplified output signal is tapped at the two mutual connection points of the transistors.



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Power moduleSlot J5

Power module ULSlot J5


• Serial oscillating circuit for the QC power stage

• Generation of the operating voltage for the HF generator

• Driver and output stage of the HF generator

• Output circuit of the HF generator

• Measurement of various operating parameters

Serial oscillating circuit for the QC power stage

The QC power stage has the task of generating a sine-wave current as free of distortion as possible. The QCpower stage is not used in the ICC to generate high-frequency power for cutting or coagulating, but insteadfunctions here as a switched-mode power supply unit with a high switching frequency and efficiency. TheQC transistors are always switched over in the zero crossing of the current. The current is forced at thesame time through the serial circuit from coil L2 and capacitor C17 into a sinusoidal shape.

Generation of the operating voltage of the HF generator

The high-frequency power is tapped via the transformer UE2 and rectified by means of the diodes D3, D4.The capacitors C4, C10 are filter capacitors. With 22 µF, they can be measured relatively minimally and theripple of the output voltage is nevertheless small due to the high operating frequency. In this way, thisswitched-mode power supply unit can also be stabilized very quickly.

The output DC voltage of the power supply unit is available at the cathode of diode D3 and is

a) directed via the U–NT–STE connection to supply the ST output stage,

b) used to operate the HF output stage via relay REL1.

The negative pole of the capacitor C10 leads to the chassis via the resistor R5. R5 is used as a shunt tomeasure the output current taken from this power supply unit. The voltage alloted to R5 if used formeasurement by U–INT.

In the activation pauses, the power supply unit can be discharged via NTE (power supply enable). To dothis, the transistor T3 is switched conductively and discharges the stored power supply voltage via theresistor R12.

The power supply output voltage is divided into smaller values via the resistor divider R7, R8 and lead tothe measuring device (U-NETZT).

Via the relay REL1, the transformer UE2 can be switched over. With an activated relay, a higher outputvoltage can be taken from the transformer. This is required to operate the ST output stage to generateespecially high voltage peaks. This high voltage is switched off to protect the HF output stage by means ofthe second contact from relay REL1.


Driver and output stage of the HF generator

The actuation signal for the HF output stage is generated on the control board (IC16) and fed to the powermodule driver IC1 via the motherboard.

Due to the high-gate source capacitance of the output stage transistors T1 and T2, the driver must be able toemit and accept high reactive currents when transferring this capacitance. That is why two drivers areswitched in parallel. The output current of the driver is restricted by the resistors R1 and R19 to protect thedriver.

The output stage transistors T1 and T2 are switched in parallel due to the necessary high current andoperate on output transformer UE1.

Output circuit of the HF generator

The output circuit of the output stage consists of the transformer UE1 on the primary side and the twocapacitors C5 and C7 switched in parallel. This parallel circuit is designed for the operating frequency ofthe HF generator and forms a sine-wave voltage in a no-load case.

At the secondary side, there is a serial circuit made up of coil L1 and the capacitor C1. This serial circuit isalso designed for the operating frequency of the HF generator and produces a sine-wave current in theoutput circuit.

In this way, in every load state of the generator, both the voltage and the current are sinusoidal.

Measurement of various operating parameters

The output current in the QC power stage flows via the transformer UE3 which is secondarily loaded withthe resistors R13, R14 and R15 and is used as a current transformer.

The voltage at these resistors corresponds to the output voltage of the QC power stage (half-cycle current)and is routed as U-IHP to the control board.

The current in the power supply unit is measured at shunt R5 and routed as U-INT (voltage as a function ofthe power supply current) to the control board.

The output voltage of the power supply unit is divided via the resistors R7, R8 and routed as U-NETZT tothe control board (IC14).

The HF primary voltage of the output stage is picked up at the oscillating circuit capacitor C5 and routed asU-PRIM to the control board (IC14).

The output stage temperature is recorded by the thermistor NTC1 and routed as voltage from the dividerR2, NTC1 with the designation TEMP to the control board (IC2).

Power moduleSlot J5

Power module ULSlot J5


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• Output stage with driver for high HF voltage pulses

• Relay with relay control

• Feedback of actuation frequency for the CPU

ST power stage

The ST power stage is used to generate high pulses for coagulation without a cutting effect, particularly forquick superficial coagulation.

The designation “ST” output stage is derived from the abbreviation of spray generator for TUR.

The power control and the generation of actuation pulses are found on the control board.

The actuation pulses (TSI-STE) move to the driver IC4 and then to the ST output stage transistor T1. Thisoperates on the output transformer UE1, the secondary side of which emits the high frequency via thecapacitors C1 and C2 as well as the relays REL1, REL2 and REL3 at the connections AE and NE. Theemitted high frequency is fed to the outputs via the Senso-board.

The capacitors C1 and C2 serve as a high-pass for suppression of faradic effects and are also an additionalprotection in isolating the patient circuit from the equipment circuit. Due to the necessary high electricstrength, two relay contacts each are switched in series.

The output relay is actuated via the relay driver IC7 which receives its actuation signals via the bus and thetarget memory IC6 (D-flipflop).

The ST power stage is supplied with voltage that is switched with relay REL19 from the power module viathe connectors J2 and J3.

The integrated counter IC1 subdivides the frequency of the actuation signal of the ST output stage to a lowfrequency, so that the frequency in the CPU can be determined by means of a counting loop.

Since the processor prescribes the actuation frequency, it receives feedback in this way as to whether the setand actual values agree. This is important since the output power of the ST power stage is controlled via therepetition frequency of the individual pulses.

ST power stageSlot J6



• Current monitor for the patient circuit

• Voltage monitor for the patient circuit

• Phase monitor for the patient circuit

• Spark monitor for monitoring the sparking at the electrodes

• Safety system for the neutral electrode (NESSY)

• Relay control

Current monitor for the patient circuit

The high-frequency current moves from the generator to the Senso-board via the connectors J1 and J2. Onthe way to the electrodes, the current is directed by the transformer UE1, the load resistors R11 and R12 ofwhich are transformed at a ratio of 2500:1 to the primary side and thus serve as a shunt for currentmeasurement.

The output voltage of the secondary winding is also proportionate to the high-frequency output current.

This voltage now moves to one of the operation amplifiers IC7 and IC8, which represent an »ideal rectifier«together with the diodes D27, the capacitor C30 feedback resistor R30.

The rectified voltage IP_PAT is lead via the control board to the processor and, after further amplificationin the operation amplifier IC8, is also lead as voltage IP_PAT A for adjustment at the trim potentiometerTP6 also to the processor.

The output voltage of the transformer UE1, on the other hand, moves after a restriction through the diodesD16, D17 to the comparator IC3, the open collector of which operates at the resistor R23. There the zerocrossings of the HF current are detected, together with the second part of the comparator IC3, at the outputof which a signal according to the zero crossing of the HF voltage is present. Using the common loadresistor R23, this circuit represents a “WIRED OR”. There is a digital signal at the output the pulse lengthof which corresponds to the phase relationship between voltage and current of the HF signal.

The voltage monitor for the patient circuit

Parallel to the lines which lead to the active electrode AE and the neutral electrode NE, the high-frequencyvoltage is picked up and led via the capacitor C1 to the transformer UE2, which transforms the voltage bya factor of 12.5 weakened to the secondary winding.

After a further halving of the measurement voltage in the resistor divider R15, R16, it moves, similar to thesituation in a current monitor, to an active, ideal rectifier, consisting of the operation amplifiers IC4, IC8 aswell as the diode D23, the capacitor C33 and the negative feedback resistor R52. The parameter for thehigh-frequency patient voltage UP_HF is then led to the processor via the control board, as is also theamplified signal UP_HF A.

At the same time, the output voltage of the transformer UE2 is directed to the comparator IC3 which emitsa digital signal to the “WIRED OR” during its positive phase. (See above for description).

Senso-boardSlot J7


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Phase monitor for the patient circuit

The phase monitor determines the phase angle between the voltage and current in a high-frequency patientcircuit. In this way not only the apparent power, but also the active power emitted to the patient can becalculated.

As already described in the current monitor and voltage monitor sections, the zero crossings of the voltageand current characteristics are evaluated in the comparators of the open collector operation amplifier IC3and summarized as “WIRED OR” in the load resistor R23. There is therefore a digital signal at the output7 of the IC3, the pulse length of which corresponds to the phase relationship between the current andvoltage.

This signal is smoothed using the diodes D20 and D21, the resistor R40 and the capacitor C13 (averaging),then amplified and decoupled via the operation amplifier IC9.

The voltage U_PHASE corresponding to the phase between the HF current and HF voltage is directed tothe control board and can be adjusted there using the trim potentiometer TP 7. The result is fed to theprocessor.

The spark monitor for monitoring the spark cycle at the electrodes

During the cutting process, for example, there is sparking at the active electrode. To maintain a consistantquality for the cut, the spark must be recorded and controlled in its intensity.

Our generators produce sine-wave output voltages with a very low distortion factor. If a spark occurs in apatient circuit, harmonic frequencies of the output signal are thus produced by the nonlinear characteristicof the spark channel. Harmonics can be either harmonics or DC voltage. This is why one can also say“rectifier effect of the spark”.

The DC voltage resulting in this way moves from the patient circuit to the spark monitor of the ICC. Itmoves via the resistors R1, R2, R4 and R5 to the Z-diodes D1 and D2, switched antiserially, which limit thesignal to 15 volts. Then follows the operation amplifier IC2, switched as an isolation amplifier, whichmakes the DC voltage signal durable.

The DC voltage proportional to the spark intensity in the patient circuit must now be evaluated by the unitand fed isolated to the unit circuit. The remainder of the circuit is in principle an isolation amplifier: DCvoltage signal is chopped, fed isolated via a transformer to the unit circuit and then rectified again.

The oscillator module IC1 produces a square-wave signal with a pulse duty factor of 1:1, present at outputs10 and 11 of the IC1. This is the chopper frequency which actuates the transistor T1 and T2 in push-pulloperation. This push-pull amplifier functions on the output transformer UE5, which is operated via theisolation amplifier IC1 using the spark voltage as the operating voltage.

In this way, the spark voltage is chopped from the transistors T1,T2 and fed via the transformer UE5 as anisolation at the secondary side to the unit circuit as AC voltage.

Diode D15 then follows on the secondary side, which again rectifies the alternating signal thus resultingand smoothes this by means of the capacitor C22.

Senso-boardSlot J7


In this way there is another DC voltage, proportional to the spark intensity, which is reduced via the resistordivider R32, R33 and then fed to the isolation amplifier IC9. The output signal U_FUNKE moves fromthere via the control board to control the processor.

The electronic components of this isolation amplifier within the patient circuit require an isolated voltagesupply to function. For this, a DC/DC converter is used which consists of a Colpitts oscillator (circuitaround Transistor T6), the alternating signal of which is transferred from the transformer UE6 to the secondaryside and rectified by diodes D4 and D6. The DC voltages thus resulting are limited to 9.1 volts by the Z-diodes D3 and D5 respectively.

In this way, voltages of +9.1 volts and –9,1 volts are available to the electronic circuit within the patientcircuit which is identified with I+9 and I–9.

Safety system for the neutral electrode (NESSY)

Problem description: The line for the neutral electrode must be monitored for wire break according to thestandard since there is risk of topical burns for the patient with an incorrect supply line.

In the ICC, correct application of the neutral electrode on the patient is also checked, as well as the uniformdistribution of the HF current to the two electrode surfaces (symmetry).

To monitor the connecting line, the cable is designed as a two-wire connection, the loop resistance of whichis measured. If the resistance value determined in this way is below a specific limit value, one can assumethat the neutral electrode line has no wire break. With conventional single-surface neutral electrodes,monitoring is performed in this way.

However, such monitoring cannot determine whether the neutral electrode is actually applied to the patientor whether it is lying around somewhere else.

To also check the correct application to the patient, the contacts of the neutral electrode must be divided,whereby a control current must flow over the electrode halves and the patient. This control current permitsresistance measurement of the tissue impedance of the patient and thus information as to whether

• the electrode is not connected or has a wire break (impedance > 120 ohms),

• is lying directly on the operating table (impedance < 5 ohms),

• or, most probably, is correctly applied to the patient (impedance between 5 and 120 ohms).

If the high-frequency current is not flowing regularly over both surfaces of a divided neutral electrode, thiscan lead to burns due to current concentration under the electrode. It is therefore also necessary to check thesymmetrical current distribution on both halves of the electrode.

The NESSY system, a neutral electrode safety system patented by ERBE, takes care of all the tasksmentioned.

Principle of the NESSY measurement system

The electric resistance of the neutral electrode is measured via an oscillator, the amplitude of which isdampened by the resistance from the patient and measured by the system. With a correct circuit design, asufficiently precise resistance measurement is possible in this way.

Senso-boardSlot J7


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The symmetry of HF current on the halves of the neutral electrode is measured by a symmetrical transformer,the output voltage of which is a function of current symmetry.

Implementation: The circuitry is found on the Senso-board. The oscillator is designed as a frequency-selective feedback amplifier: The amplifier IC6 actuates the push-pull stage, consisting of the transistors T4and T5, and passes the amplified output signal to the frequency-selective serial circuit made of capacitorC20, coil L1 and the inductivity from the primary side of transformer UE4.

One part of the output signal at the transformer UE4 is picked up via the resistor R18 and fed to the activebandpass from the operation amplifier IC5 and its wiring. The center frequency is equal to the resonancefrequency of the previously mentioned serial circuit.

One part of the output signal from the active bandpass is fed again in proper phase to the amplifier IC6,such that the entire arrangement fulfills the oscillation condition and oscillates at the resonance frequencyas an oscillator.

The oscillator can be switched off via the transistors T7 and T8 by means of the disable signal OSZI_DISfrom the processor.

The resistance of the neutral electrode is determined by loading this oscillator with the resistance to bemeasured. The voltage collapses on the internal impedance of the oscillator according to the load. Thusevery oscillator voltage can be assigned an appropriate resistance value.

The oscillator voltage is present at the input of the active bandpass and can be picked up at the output of theoperation amplifier IC6.

After peak rectification by diode D30 and capacitor C34, the measurement voltage U_NESSY can bepicked up at the isolation amplifier IC9 and moves via the adjustment on the control board (trim potentiometerTP9 ) to the processor to determine the resistance of the neutral electrode.

The high-frequency output voltage for the neutral electrode is balanced by the capacitors C2 and C3 onboth lines to the neutral electrode, i.e. divided equally.

Whether the current on both lines to the neutral electrode is now of equal size, depends on whether the twoelectrode halves of the split neutral electrode are applied with the same surfaces to the patient. By measuringthe symmetry of the current and the resistance, it is therefore possible to receive information as to whetherthe electrode is applied well to the patient with this entire surface.

The high-frequency current flows via the two primary windings 1 and 2 of the transformer UE3 in such amanner that the resulting magnetic flow is cancelled out by equally strong currents. Thus in this case, novoltage is induced at winding 3 of the transformer UE3. The reverse is true: The more unsymmetrical thecurrent flow is, the greater the voltage induced in winding 3.

The high-frequency output voltage, which is a measure for the unsymmetry of the current flow, is rectifiedusing diode D9 and filtered with capacitor C57, then amplified using the operation amplifier IC9, so that asignal U_SYM is available which moves via the control board to the processor for evaluation.

The current density is calculated mathematically from the following dimensions, now known:

• High-frequency current,

• Symmetry of the high-frequency current at the neutral electrode,

• Contact resistance of the neutral electrode to the body of the patient.

Senso-boardSlot J7


Senso-boardSlot J7

The relay control

The relays REL1, REL2 and REL3 are used to switch on the required output sockets. The relays are controlledby the control bus via the target memory D-flipflops IC10 and the transistors T9, T10 and T11.


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• Fingerswitch monitor 1

• Fingerswitch monitor 2

• Relays and their actuation for optional, separate connection of high-frequency to the required outputsockets.

The fingerswitch monitors are used to activate the surgical unit from the surgeon's handle. The monitor candetect which output sockets carry high frequency and which current quality (cutting or coagulating) shouldbe switched on.

Since the handles are within the patient current circuit electrically, the monitor circuits must be designedisolated from the unit circuit and from the chassis.

The monitor circuits must therefore be supplied with current from a floating voltage source. These voltagesources must however also be well isolated at high frequencies, such as are used in high-frequency surgery.This means that monitors with their voltage sources must be designed as low capacity compared to the restof the unit.

The voltage supply for the monitors is realized by two push-pull converters.

The voltage converter for monitor 1 essentially consists of the transistors T1, T2 and the transformer UE 1.

The voltage converter for monitor 2 essentially consists of the transistors T5, T6 and the transformer UE 2.

The transistors of this converter are monitored via the oscillator IC 6, which supplies a symmetrical, square-wave signal, that is shortened in the monoflop IC5, in such a way that it is ensured that the two transistorsof a converter are not switched on at the same time.

The NAND circuits of the IC 4 create an appropriate push-pull signal that is directly suitable for actuationof the converter transistors.

Since both fingerswitch monitors have identical circuits, the circuitry of only one of the two monitors isexplained in the following:

On the secondary side of the converter transformer UE 1, a needle-shaped output signal forms in the mid-frequency range which is directed both to the diode bridge D1 to D5 with the transmitter diode from IC 1 aswell as via the RC low-pass C3, R2, C1, R1 on the handle's selection keys.

Due to the bridge circuit for diodes D1 to D5, the transmitter diode for optocoupler IC 1 may be illuminatedduring both half-waves and connect through the receiving transistor for the optocoupler IC 1 by pulses.

If, on the other hand, a key on the handle is pressed, a voltage needle for the converter voltage is dampenedby the Si diode integrated into the handle, so that the transmitter diode for the coupler IC1 can no longer beilluminated for the affected voltage needle and the appropriate transistor is no longer connected through atexactly this voltage needle.

The output signal from the receiving transistor is directed to the two data inputs for the D-flipflops of theIC3. These two D-flipflops additionally receive the actuation signals for the converter transistors, so that adefinite assignment is possible here between the dampened voltage needle and the actuation signal. Thetwo D-flipflops therefore function as a scanning circuit in proper phase, the output signal of which can beassigned to the switched key in the handle.

Relay boardSlot J8 (for ICC 300, 350)


Since a diode is switched in series for each of the two pushbuttons on the handle, although both diodes havea definite and opposite polarity, this circuitry can be detected exactly via the dampened half-wave afterpressing a pushbutton, as to whether and which button was activated. Outputs 2 or 12 on the IC3 thereforeprovide reliable information as to whether the “cutting ” or “coagulating” key was pressed. The informationthat no key was pressed is just as possible as the information that both keys were pressed simultaneously.

Isolation of the fingerswitch monitor is complete via the transformer UE1 and via the optocoupler IC1.

The function of the second fingerswitch monitor is equivalent.

The two relays REL 1 and REL 2 are also found on the same PCB which safely separate the two outputsockets for the active electrodes from the generator circuit when the unit is not activated, while connectingonly the activated output socket to the generator when the unit is activated.

Due to the higher electrical strength that can be achieved, two relay contacts are switched in series.

The two relays are activated from the CPU via the target memory D-flipflops IC8 and the transistors T3,T4.

Relay boardSlot J8 (for ICC 300, 350)


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• 7-segment displays and their actuation

• Keyboard and LED matrix for light fields

• Operating board bus and keyboard treatment

• Target memory and driver for rows and columns of the display matrix

• Jumpers for activation of special software

7-segment displays and their actuation

All settings on the ICC are, insofar as this concerns numerical values, shown on the display board with 7-segment displays.

The data to be displayed come from the operating board bus system B1BUS via the target memory (8-foldD-flipflops) IC5 and IC7 on the segment driver IC6. This results in the bus for the segment actuationidentified as S1BUS.

The segment bus S1BUS controls the series resistors necessary for current limitation in the LEDs thesegments A to F and decimal point DP for the displays LED1 and LED2.

The columns are selected by the target memory IC5 via column driver transistors, which are depicted in thecircuit diagram each directly over the 7-segment displays.

In this way, every individual segment within the matrix is addressable via the column selection and thesegment control.

Keyboard and LED matrix for light fields

All keys for entering operating parameters are designed as membrane buttons and switched electrically inthe form of a matrix with columns and rows.

In addition, all visual displays with the exception of numerical displays are designed in the form of LEDdisplays or LED fields which are electrically switched as a matrix.

Operating board bus and keyboard treatment

To control the operating and display board, an independent bus system is required that is derived from theaddress bus (A0 to A7). To do this, the addresses A0 to A7 are inverted in the transistor array IC12 andthrough the transistor T21 and forming the operating board bus B1BUS, which now addresses the targetmemory of the display board in conjunction with the corresponding independent chipselect signal from theinverter IC8 and the required assemblies.

The rows of the keyboard are multiplexed via the target memory IC1; this produces the row actuationpulses TZ1 to TZ4 (keyboard row).

If a specific key is now activated, this sends its answer during its activation time via the row actuation pulseas an output signal via a line for the keyboard columns TS2 to TS3 to the keyboard encoder IC11, whichforms a 4 bit binary number from this and directs it via its output to the CPU for evaluation.

Display board


Target memory and drivers for rows and columns of the display matrix

The LED matrix is actuated by the already described internal bus system B1BUS of the display board.

The 8-fold D-flipflops IC2, IC3 and IC12 are used as target memories for columns (IC2) and rows (IC3).

The columns of the lamp matrix LS1 to LS6 are activated via the driver transistors T2, T20, T11, T10, T4and T9 switched as emitter followers in a multiplex method and each switched for a brief time to +5 volts.

The current is then led via the appropriate LED and directed via the necessary current limitation resistors aswell as the transistor array IC4 to chassis.

The blue LEDs D36 and D37 for display of the coagulation channels are an exception, the anodes of whichare permanently at +5 volts via the current limitation resistors and are switched on via the transistor arrayIC13.

Jumpers for activation of special software

Jumpers J3 to J10 are intended for software specialities available for tests and for switching on specialfeatures in certain countries. The corresponding jumpers are already placed during production and must notbe changed arbitrarily.

Display board


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Upper wiring module

The “upper wiring module” PCB directs the rectified supply voltage from the motherboard via the plug J14as a supply voltage to the QC power stage. In addition, this PCB is used as a connection between the QCpower stage and the power module, since currents of this dimension cannot be directed via the motherboard.

The lines between the QC power stage and the motherboard are directed through a ferrite core to reduceinterferences from the QC power stage into the network.

CAUTION

This PCB is at supply voltage potential

Chapter 4Block diagrams

171 / 2664 BLOCK DIAGRAMS

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ICC 200Block diagram

V 2

.0 /

V 4

.0

Gezeich. = Drawn

Geprüft = Checked

Freigabe = Approv.

Datum = Date*

Name = Name

Maßstab = Scale

Datei = File

Projekt = Project

Benennung = Title

Nummer = Number

Ers. für = Replaces

Ers. durch = Repl. by

172 / 266 4 BLOCK DIAGRAMS


V 2

.0 /

V 4

.0

Gezeich. = Drawn

Geprüft = Checked

Freigabe = Approv.

Datum = Date*

Name = Name

Maßstab = Scale

Datei = File

Projekt = Project

Benennung = Title

Nummer = Number



173 / 2664 BLOCK DIAGRAMS

Art

. No.

801

16-2

0109

/ 20

04


V 2

.0 /

V 4

.0

Gezeich. = Drawn

Geprüft = Checked

Freigabe = Approv.

Datum = Date*

Name = Name

Maßstab = Scale

Datei = File

Projekt = Project

Benennung = Title

Nummer = Number



Chapter 5Circuit diagrams

PCBs forICC 200, 300, 350

178 / 266 5 CIRCUIT DIAGRAMS

ICC 200, 300, 350CPU PCB30128-052

1

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C10

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C1

1

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C1

5

10

nF

C2

68nF

C3

68nF

C4

68nF

C5

68nF

C6

68nF

C7

68nF

C8

68nF

C9

68nF

D2

1N4148

30

31

32

33

34

35

36

37

38

39

40 1 2 3 4 5 14

15

12 8 7 9 10

13

A1

0

A1

1

A1

2

A1

3

A1

4

A1

5

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0 D

0

D1

D2

D3

D4

D5

D6

D7

M1

MR

EQ

IOR

Q

RD

WR

RF

SH

HA

LT

WA

IT

INT

NM

I

RE

SE

T

BU

SR

EQ

BU

SA

CK

CL

K

Z8

4C

00

IC1

BA

T O

N

RE

S

PF

D

WD

0

OS

C S

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OS

C

VB

AT

VC

C

IC1

0

PF

1

LO

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INE

CE

OU

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CE

IN

WD

1

RE

S

GN

D

MA

X6

91

VN

OT

Q1

Q4

Q5

Q6

Q7

Q8

Q9

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0

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1

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2

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3

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4R

CL

K

IC1

2

74

HC

40

20

GIC

16

SG

53

1P

EN

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T

&

74

HC

00

IC1

5&

74

HC

00

IC1

5

N.C

.

VC

C

A1

1

A1

2

A1

0

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

R/WO

E

CE

1

CE

2

D5

D4

D7

D6

D3

D2

D1

D0

11

12

13

15

16

17

18

19

10

9 8 7 6 5 4 3 25

24

21

IC2

23

2

58

64

&

74

HC

00

IC1

5

&

74

HC

00

IC1

5

&

74

HC

00

IC1

1

&

74

HC

00

IC1

1

74

HC

74

S RIC1

3

C D

74

HC

74

S RIC1

3

C D

CE

OE

D7

D6

D5

D4

D3

D2

D1

D0

19

18

16

17

15

13

12

11

A0

A1

A3

A2

A4

A5

A6

A7

A8

A9

A1

0

A1

1

A1

2

A1

3

10

9 8 7 6 5 4 3 25

24

21

23

2 26

A1

4

A1

5

27

1

27

C5

12

IC3

0 2

G70D

MU

X

74

HC

13

8

0 1 2 3 4 5 6 7

&

IC8

0 2

G70D

MU

X

74

HC

13

8

0 1 2 3 4 5 6 7

&

IC9

JP1

R1

2k2

R10

5k6

R2

1

22

0R

R20

220R

R1

9

22

0R

R11

5k6

R12

5k6

R13

5k6

R1

4

5k6

R3

8k2

R4

1k

R5

5k6

R6

5k6

CE

_IN

CE

_IN

CE

_O

UT

CE

_O

UT

CS

10

CS

11

CS

4

CS

5

CS

6

CS

7

CS

8

CS

9

INT

IOR

Q

IOR

Q

M1

M1

MR

EQ

MR

EQ

RD

RE

S

RE

S

WA

ITWR

WR

AB

US

CL

K

CL

K

DB

US

GN

D

GN

D

GN

DG

ND

GN

DG

ND

GN

D

GN

D

GN

D

J2/7

C

PIC

-CL

K

+2

4V

RE

S

RE

S

SIO

-CL

K

Vcc

+5

VV

cc+

5V

Vcc

+5

V

Vcc

+5

VV

cc+

5V

Vcc

+5

V

Vcc

+5

V

Vcc

+5

VV

cc+

5V

Vcc

+5

V

Vcc

+5

V

Vcc

+5

VV

cc+

5V

Vcc

+5

V

Vcc

+5

V

Vcc

+5

V

VN

OT

VN

OT

VN

OT

WD

I

A1

4

A5

A4

A3

A1

5

A1

4

A1

3

A1

3

16

17

18

19

20

21

22

23

24

25

26

27

28

6

A0

-A1

5

D0

-D7

13

12

15

5 46

7 891

0

16

13

2 14

11

10

9 14

15

1 2 37 5 4 6 13

12

11

15

1 23

4 56

20

22

A0

-A1

5

26

D0

-D7

1

27

28

9 10

81

2

13

11

1 23

4 56

14

6

3 2

5

13

10

8

11

12

9

A0

-A1

5

20

D0

-D7

22

4 51 2 3 6

15

14

13

12

11

10

9 7

4 51 2 3 6

15

14

13

12

11

10

9 7

5 CIRCUIT DIAGRAMS 179 / 266

Art

. No.

801

16-2

0109

/ 20

04

ICC 200, 300, 350CPU PCB30128-052

2

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ICC

CP

U

3

30

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8-0

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30

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52

40

12

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26

29

.07

.92

B

C13

+

15uF

C14

+

15uF

C16

180nFC17

180nFC18

180nFC19

1nF

C20

68nF

D1

1N

41

48

D7

D6

D5

D4

D3

D2

D1

D0

A0

A1

RD

RD

Y

CS

AIN

1

AIN

2

AIN

3

AIN

4

VR

EF

+

VR

EF

-

AD

6 7 8 9 17

18

19

20

IC1

4

AD

78

24

&

74

HC

00

IC1

1

&

74

HC

00

IC1

1

20

19

40

39

38

D0

D1

D2

D3

D4

D5

D6

D7

B/A

SE

L

C/D

SE

L

CE

M1

IOR

Q

INT

IEI

IEO

A0

A1

A2

A3

A4

A5

A6

A7

AR

DY

AS

TB B0

B1

B2

B3

B4

B5

B6

B7

BR

DY

BS

TB

1 3 2

RD

CL

K

Z8

0P

IO

IC4

20

19

40

39

38

D0

D1

D2

D3

D4

D5

D6

D7

B/A

SE

L

C/D

SE

L

CE

M1

IOR

Q

INT

IEI

IEO

A0

A1

A2

A3

A4

A5

A6

A7

AR

DY

AS

TB B0

B1

B2

B3

B4

B5

B6

B7

BR

DY

BS

TB

1 3 2

RD

CL

K

Z8

0P

IO

IC5

20

19

40

39

38

D0

D1

D2

D3

D4

D5

D6

D7

B/A

SE

L

C/D

SE

L

CE

M1

IOR

Q

INT

IEI

IEO

A0

A1

A2

A3

A4

A5

A6

A7

AR

DY

AS

TB B0

B1

B2

B3

B4

B5

B6

B7

BR

DY

BS

TB

1 3 2

RD

CL

K

Z8

0P

IO

IC6

20

19

40

39

38

D0

D1

D2

D3

D4

D5

D6

D7

B/A

SE

L

C/D

SE

L

CE

M1

IOR

Q

INT

IEI

IEO

A0

A1

A2

A3

A4

A5

A6

A7

AR

DY

AS

TB B0

B1

B2

B3

B4

B5

B6

B7

BR

DY

BS

TB

1 3 2

RD

CL

K

Z8

0P

IO

IC7

R1

5

1kR

16

1kR

17

1kR

18

1k

R7

680k

R8

5M6

R9

22k

RN1

8*1k

CS

4C

S5

CS

6C

S7

CS

8

INT

INT

INT

INT

IOR

QIO

RQ

IOR

QIO

RQ

M1

RD

RD

RD

RD

RD

RE

S

SIC

HE

R

WA

IT

AB

US

AB

US

CL

KC

LK

CL

KC

LK

DB

US

DB

US

FIS

CH

-A1

FIS

CH

-A2

FIS

CH

-A3

FIS

CH

-B1

FIS

CH

-B2

FIS

CH

-B3

FU

SS

-A1

FU

SS

-A2

FU

SS

-B1

FU

SS

-B2

GN

D

GN

D

GN

DG

ND

GN

D

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

IEI_

5

IEI_

5IE

I_6

IEI_

6

IEI_

7

IEI_

7

J1/1

0

J1/1

1

J1/1

2

J1/1

3

J1/1

4

J1/1

5

J1/1

6

J1/1

7

J1/1

8

J1/1

9

J1/2

1

J1/2

2

J1/2

4

J1/2

5

J1/2

6

J1/2

7

J1/2

8

J1/2

9

J1/3

0

J1/3

1

J1/3

2

J1/3

3

J1/3

4

J1/3

5

J1/8

J1/9

J2/1

3C

J2/1

8C

J2/1

9C

J2/2

0C

J2/2

3A

J2/2

4A

J2/2

4C

J2/2

5A

J2/2

5C

J2/2

6A

J2/2

6C

J2/2

7A

J2/2

7C

J2/2

8A

J2/2

8C

J2/2

9A

J2/2

9C

J2/3

0A

J2/3

0C

J2/3

1C

J2/6

A

J2/6

C

J2/7

A

J2/7

C

J2/8

A

J2/8

C

J2/9

A

M1

_P

IO

M1

_P

IO

M1

_P

IOM

1_

PIO

M1

_P

IO

MC

-FR

EI

PIC

-RT

CC

Vcc

+5

V

Vcc+5V

Vcc

+5

V

Vcc

+5

V

WD

I

A1

A0

A0

A1

A1

A0

A1

A0

A0

A1

16

10

22

21

4 3 2 1

D0

-D7

15

14

13

9 10

81

2

13

11

10

12

13

14

15

16 17

18 21

22

23

24

25

27

28

29

30

31

32

33

34

35

36

37

456

789

D0

-D7

10

12

13

14

15

16 17

18 21

22

23

24

25

27

28

29

30

31

32

33

34

35

36

37

456

789

D0

-D7

10

12

13

14

15

16 17

18 21

22

23

24

25

27

28

29

30

31

32

33

34

35

36

37

456

789

D0

-D7

10

12

13

14

15

16 17

18 21

22

23

24

25

27

28

29

30

31

32

33

34

35

36

37

456

789

D0

-D7

1

5

4

3

2

9

8

7

6


ICC 200, 300, 350CPU PCB30128-052

3

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52

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12

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26

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.07

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B

C12

68nF

RA

0

RA

1

RA

2

RA

3

MC

LR

RT

CC

OS

C1

OS

C2

RB

0

RB

1

RB

2

RB

3

RB

4

RB

5

RB

6

RB

7

PIC

16

C5

4

IC1

7

J1J2

J3

R2

6

2k2

R2

5

2k2

R2

4

2k2 R

23

2k2 R

22

2k2

R2

2k2

RA

1

8*2

k2

RA

2

8*2

k2

RA

3

8*2

k2

CS

10

CS

11

CS

9

INT

IOR

QM

RE

Q

RD

RE

S

RE

SR

ES

SIC

HE

R

SIC

HE

R

WR

AB

US

AB

US

DB

US

DB

US

F-G

ND

F-G

ND

F-G

ND

FIS

CH

-A1

FIS

CH

-A1

FIS

CH

-A2

FIS

CH

-A2

FIS

CH

-A3

FIS

CH

-A3

FIS

CH

-B1

FIS

CH

-B1

FIS

CH

-B2

FIS

CH

-B2

FIS

CH

-B3

FIS

CH

-B3

FU

SS

-A1

FU

SS

-A1

FU

SS

-A2

FU

SS

-A2

FU

SS

-B1

FU

SS

-B1

FU

SS

-B2

FU

SS

-B2

GN

D

GN

D

GN

D

GN

DG

ND

J1-1

0

J1-1

0

J1-1

1

J1-1

1

J1-1

2

J1-1

2

J1-1

3

J1-1

3

J1-1

4

J1-1

4

J1-1

5

J1-1

5

J1-1

6

J1-1

6

J1-1

7

J1-1

7

J1-1

8

J1-1

8

J1-1

9

J1-1

9

J1-2

1

J1-2

1

J1-2

2

J1-2

2

J1-2

4

J1-2

4

J1-2

5

J1-2

5

J1-2

6

J1-2

6

J1-2

7

J1-2

7

J1-2

8

J1-2

8

J1-2

9

J1-2

9

J1-3

0

J1-3

0

J1-3

1

J1-3

1

J1-3

2

J1-3

2

J1-3

3

J1-3

3

J1-3

4

J1-3

4

J1-3

5

J1-3

5

J1-4

0

J1-4

0

J1-8

J1-8

J1-9

J1-9

J1/1

0

J1/1

1

J1/1

2

J1/1

3

J1/1

4

J1/1

5

J1/1

6

J1/1

7

J1/1

8

J1/1

9

J1/2

1

J1/2

2

J1/2

4

J1/2

5

J1/2

6

J1/2

7

J1/2

8

J1/2

9

J1/3

0

J1/3

1

J1/3

2

J1/3

3

J1/3

4

J1/3

5

J1/8

J1/9

J2/1

3C

J2/1

8C

J2/1

9C

J2/2

0C

J2/2

3A

J2/2

4A

J2/2

4C

J2/2

5A

J2/2

5C

J2/2

6A

J2/2

6C

J2/2

7A

J2/2

7C

J2/2

8A

J2/2

8C

J2/2

9A

J2/2

9C

J2/3

0A

J2/3

0C

J2/3

1C

J2/6

AJ2

/6C

J2/7

AJ2

/7C

J2/8

AJ2

/8C

J2/9

A

M1

_P

IO

MC

-FR

EI

PIC

-CL

K

PIC

-RT

CC

+2

4V

RE

S

SIO

-CL

K

Vcc

+5

V

Vcc

+5

V

Vcc

+5

V

Vcc

+5

V

Vcc+5V

Vcc+5V

VN

OT

D0

D2

D5

D4

A1

5

A1

3

A1

1

A0

A2

A4

A6

A8

A1

0

D1

D7

D6

D3

A1

4

A1

2

A1

A3

A5

A7

A9

416

15

17

18

1 2

6 7 8 9 10

11

12

13

3

1

10

11

12

13

14

15

16

17

18

19

2

20

21

22

23

24

25

26

27

28

29

3

30

31

32

33

34

35

36

37

38

39

4

40

56

78

9

A1

A1

0

A1

1

A1

2

A1

3

A1

4

A1

5

A1

6

A1

7

A1

8

A1

9

A2

A2

0

A2

1

A2

2

A2

3

A2

4

A2

5

A2

6

A2

7

A2

8

A2

9

A3

A3

0

A3

1

A3

2

A4

A5

A6

A7

A8

A9

C1

C1

0

C1

1

C1

2

C1

3

C1

4

C1

5

C1

6

C1

7

C1

8

C1

9

C2

C2

0

C2

1

C2

2

C2

3

C2

4

C2

5

C2

6

C2

7

C2

8

C2

9

C3

C3

0

C3

1

C3

2

C4

C5

C6

C7

C8

C9

1

10

11

12

13

14

15

16

17

18

19

2

20

21

22

23

24

25

26

27

28

29

3

30

31

32

33

34

35

36

37

38

39

4

40

56

78

9

1

10

11

12

13

14

15

16

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1

10

11

12

13

14

15

16

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10

11

12

13

14

15

16

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Art

. No.

801

16-2

0109

/ 20

04

ICC 200, 300, 350CPU PCB (bare)40128-026


ICC 200, 300, 350Low Voltage Supply30128-410

1

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C28

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C29

+

100uF

C30

+

100uF

C31

+

100uF

C17

+

1000uF

C56

1nF

C58

1uF

C59

+

100uF

C60

+

100uF

C61

+

100uF

C55

2n2

C54

22nF

C53

330pF

C57

100nF

C49

+

2u2

C50

+

2u2

C52

+

2u2

C51

+

2u2

C41

1nF

C43

1uF

C46

+

100uF

C45

+

100uF

C44

+

100uF

C40

2n2

C39

22nF

C38

330pF

C42

100nF

C34

+

2u2

C35

+

2u2

C37

+

2u2

C36

+

2u2

C6

7

2n

2

C64

100nF

C63

+

220uF

C62

+

1uF

C47

+

1000uF

C32

+

1000uF

D1

SB340

D5

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48

LED6

rot

D3

SB340

LED3

rot

D2

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LED2

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D6

MU

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R12

15k

R13

100R

R23

18k

R22

4k7

R15

3k3

R14

470R

R38

4k7

R18

470R

R36

36k

R35

22k

R42

100R

R44

1k

R33

30k

R34

10k

R29

470R

R31

9k1

R30

4k7

R20

2k2

R28

36k

R27

22k

R48

4k7

R25

30k

R26

10k

R5

0

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R19

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Art

. No.

801

16-2

0109

/ 20

04

ICC 200, 300, 350Low Voltage Supply30128-410

n.b

est

n.b

est

2

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20

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C1

68nF

C1

0

6n

8

C11

68nF

C16

+

3u3

C18

68nF

C2

68nFC3

10nF

C4

10nF

C5

10nF

C6

10nF

C65

68nF

C66

68nFC7

10nF

C8

10nF

C9

+

1uF

D4

MU

R1

20

IC8

1

40

66

1

IC8

1

40

66

1

IC8

1

40

66

1

IC2

TD

A7

05

2

GN

D

+

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1

4066

1

CV

TR

G

TH

D

DC

H

RE

S

IC4

OU

T

NE

55

5

CV

TR

G

TH

D

DC

H

RE

S

IC5

OU

T

NE

55

5

CV

TR

G

TH

D

DC

H

RE

S

IC7

OU

T

NE

55

5

1DR C

1 40

17

4

IC9

J1J2 J3

MP

1

MP

2

MP

3

R1

10

kR

10

5k1

R11

51k

R16

100k

R2

10

k

R21

n.best

R2

4

10

k

R3

10

k

R37

2k2

R39

5k1

R4

10

0k

R5

10

k

R6

10

0k

R7

10

k

R8

10

0k

R9

10

k

RN

1

8*1

0k

T1

BS

17

0

TP1

n.best

TP

2 20

0k

TP

3 20

0k

TP

4 20

0k

RE

SE

T

RE

SE

T

RE

SE

T

AL

AR

M

AL

AR

M

AL

AR

M

CS

-TO

N

CS

-TO

N

CS

-TO

N

GN

D

GN

D

GN

D

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

D

GN

DG

ND

GN

DG

ND

GN

D

GN

D

GN

D

GN

D

+2

4V

+2

4V

RE

SE

RV

E

RE

SE

RV

E

RE

SE

RV

E

TIM

ER

OF

F

TIM

ER

OF

F

TIM

ER

OF

F

TO

N-C

PU

TO

N-C

PU

TO

N1

TO

N1

TO

N1

TO

N2

TO

N2

TO

N2

TO

N3

TO

N3

TO

N3

U_

IN

Vcc

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V

+1

5V

Vd

d

+1

5V

Vd

d

+1

5V

Vd

d

+1

5V

Vd

d

+1

5V

Vd

d

+1

5V

Vd

d

Ve

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21

13

34

5

98

6

6

2

5 8

3

1

10 11

12

57

3

4 6 2 57

3

4 6 2 57

3

4 6 2

1 32

45

67

11

10

13

12

14

15

9

A1

A1

0

A1

1

A1

2

A1

3

A1

4

A1

5

A1

6

A1

7

A1

8

A1

9

A2

A2

0

A2

1

A2

2

A2

3

A2

4

A2

5

A2

6

A2

7

A2

8

A2

9

A3

A3

0

A3

1

A3

2

A4

A5

A6

A7

A8

A91 2 3 4 5 1 2 3 4

1

2 3 9 8 7 6 5 4

3

2

1


ICC 200, 300, 350Low Voltage Supply (bare)40121-060

n.bes

t

n.bes

t

2

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ich.

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Name

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ICC

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p.Netz

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1-060M.Fri

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230

128-4

10

3012

8-410

A

20-07

-94

20-07

-94J.B

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C1

68nF

C10

6n8

C11

68nF

C16

+

3u3

C18

68nF

C2

68nFC3

10nF

C4

10nF

C5

10nF

C6

10nF

C65

68nF

C66

68nFC7

10nF

C8

10nF

C9

+

1uF

D4

MUR1

20

IC8

1

4066

1

IC8

1

4066

1

IC8

1

4066

1

IC2 TD

A705

2 GND

+

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1

4066

1

CVTRG

THD

DCH

RES

IC4

OUT

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5

CVTRG

THD

DCH

RES

IC5

OUT

NE55

5

CVTRG

THD

DCH

RES

IC7

OUT

NE55

5

1DR C1 4017

4

IC9

J1J2 J3

MP1

MP2

MP3

R1 10k

R10

5k1

R11

51k

R16

100k

R2 10k

R21

n.best

R24

10k

R3 10k

R37

2k2

R39

5k1

R4 100k

R5 10k

R6 100k

R7 10k

R8 100k

R9 10k

RN1

8*10k

T1BS17

0

TP1

n.best

TP2 20

0k

TP3 20

0k

TP4 20

0k

RESE

T

RESE

T

RESE

T

ALAR

M

ALAR

M

ALAR

M

CS-TO

N

CS-TO

N

CS-TO

N

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

+24V

+24V

RESE

RVE

RESE

RVE

RESE

RVE

TIMER

OFF

TIMER

OFF

TIMER

OFF

TON-

CPU

TON-

CPU

TON1

TON1

TON1

TON2

TON2

TON2

TON3

TON3

TON3

U_IN

Vcc

+5V

+15VVdd

+15VVdd

+15VVdd

+15VVdd

+15VVdd

+15VVdd

Vee

-15V

21

13

34

5

98

6

6

2

5 8

3

1

10 11

12

57

3

4 6 2 57

3

4 6 2 57

3

4 6 2

1 32

45

67

1110

1312

1415

9

A1 A10

A11

A12

A13

A14

A15

A16

A17

A18

A19

A2 A20

A21

A22

A23

A24

A25

A26

A27

A28

A29

A3 A30

A31

A32

A4 A5 A6 A7 A8 A91 2 3 4 5 1 2 3 4

1

2 3 9 8 7 6 5 4

3

2

1


Art

. No.

801

16-2

0109

/ 20

04

ICC 200, 300, 350Control board30128-357

1

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30

12

8-3

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Ha

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28

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33

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12

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84

C3

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30

pF

30

-1-9

6

C9

68

nF

C8

68

nF

C28

100pF

C16

2n2

C15

100pF

C21

33pF

C31

33pF

C32

33pFC20

68nF

C10

2n2

C1

2

68

nF

C1

1

68

nF

C22

100pF

C29

100pF

C19

220pF

C3

0

68

nF

C1

8

68

nF

C1

7

68

nF

D11

1N4148

D12

1N4148

D1

0

1N

41

48

D17

1N4148

D16

1N4148

D15

1N4148

D13

3V6

D14

3V6

40

47

RC

X

CX

Q Q

IC1

8

AS

T

-TR

IG

+T

RIG

RT

RIG

MR

RX

AS

T

OS

C O

UT

G

IA3

IA2

IA1

IA0 S1

S0

IB3

IB2

IB1

IB0

EB

EA

OA

OB

IC1

1

45

39

IC1

3

CX

R

&

RX

/CX 4

52

8

IC9

+- LM

31

9G

ND

IC9

+- LM

31

9G

ND

-+

IC4

LM

31

9

IC1

2

40

30

=1

IC1

3

CX

R

&

RX

/CX 4

52

8

S RIC2

1

40

13

C D

S RIC2

1

40

13

C D

IC1

7

CX

R

&

RX

/CX 4

52

8

IC1

7

CX

R

&

RX

/CX 4

52

8

IC4

+- LM

31

9G

ND

-+

IC9

LM

31

9

IC1

4

+- LM

31

9G

ND

IC1

6

CX

R

&

RX

/CX 4

52

8

IC1

6

CX

R

&

RX

/CX 4

52

8

IC1

4

+- LM

31

9G

ND

-+

IC1

4L

M3

19

MP

1

MP

2

R52

1k

R51

7k5

R53

10R

R58

560R

R5

6

1k

R59

4k7

R60

180R

R69

1k

R88

8k2

R68

9k1

R65

43k

R77

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R86

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10

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R61

820R

R50

10k

R48

560R

R49

2k2

R54

4k7

R80

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R81

470R

R73

1k

R78

1k

R72

33k

R70

4k7

R71

100R

R76

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R74

10k

R75

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17

0

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IN

A AN

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S GN

D

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Art

. No.

801

16-2

0109

/ 20

04


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A2

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A2

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A2

4

A2

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A2

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A2

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A2

8

A2

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A3

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0

A3

1

A3

2

A4

A5

A6

A7

A8

A9

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B1

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B1

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B1

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B1

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B1

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B1

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B1

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B1

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ICC 200, 300, 350Control board (bare)40128-095


Art

. No.

801

16-2

0109

/ 20

04

ICC 200, 300, 350QC Power Stage30128-528

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IC2 1

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IC2 1

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IC2 1

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IC3 1

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IC3 1

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IC3 1

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IC3 1

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ICC 200, 300, 350QC Power Stage (bare)40128-127


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ICC 200, 300, 350Power Module (bare)Power Module UL (bare)40128-117


Art

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801

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0109

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04

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Art

. No.

801

16-2

0109

/ 20

04

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801

16-2

0109

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04

ICC 200, 300, 350Senso-board30128-561

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0109

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801

16-2

0109

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04

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Art

. No.

801

16-2

0109

/ 20

04


3

Ge

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16-2

0109

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Art

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801

16-2

0109

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04

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Art

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801

16-2

0109

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Art

. No.

801

16-2

0109

/ 20

04


3

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Art

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801

16-2

0109

/ 20

04


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Art

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801

16-2

0109

/ 20

04

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9


Art

. No.

801

16-2

0109

/ 20

04


3

Ge

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C9

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4

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3

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9


Art

. No.

801

16-2

0109

/ 20

04


5

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C18

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C17

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C16

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C20

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50

IC5 1

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IC5 1

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IC5 1

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IC5 1

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50

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50

1

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IC6 1

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IC6 1

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50

IC6 1

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50

IC6 1

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50

IC6 1

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IC1 1

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IC1 1

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50

IC1 1

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IC1 1

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50

IC1 1

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IC1 1

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J24

J23

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7

68

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5

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4

68

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8

68

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9

68

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RN10

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8*10k

RN18

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RN17

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RN11

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RN4

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RN1

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11

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12

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13

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14

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15

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16

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17

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18

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19

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2

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20

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21

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22

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6

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7

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8

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9

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1

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FU

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GN

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GN

D

GN

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DG

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2

RE

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3

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5

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Vcc

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6

NE B

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Diese Zeichnung

ist urheber-

ohne unsere Genehmigung

Benennung/Title

Zeichnungsnummer/DWG.NO

Gert/UNIT

Weitergabe und Vervielfltigung

rechtlich geschtzt,

daher

unzulssig

Datum

Name

Gezeich.

Gepr

ft

LP u

n.:

LP b

s.:

Blat

tvo

nDatum

Name

nderung

Nr.

M.Fritz

ICC

6

Motherboard

A

27.01.94

40128-092

30128-351

30128-351

20-07-94

M.Hagg

C13

10nF

C12

68nF

C14

68nF

C28

u15

C31

u022

C30

u022

C29

u15

C26

68nF

C27

68nF

C25

1uF

D5

1N4148

D6

10V

D7

10V

D10

BA159

D11

BA159

D12

1N4148

D9

1N4148

D22

1N4148

rot

D23

D24

BA159

D25

BA159

D26

BA159

D27

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IC12

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IC12

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IC12

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IC14

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-OF

F

LF356

J26

J27

J28

J29

J57

J58

L1R4

1k/1W

R7

10k

R8

100k

R25

1k2

R24

68R

R22

10k

R21

3M3

R23

2k2

R20

330k

R74

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REL2 REL2

REL2

TP1

220R

UE1

1

2

3

4

5

6

BF/C

F

GND

GND

GND

GND

GND

GND

GND

GND

GND

I-HF

L

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R-BF

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RES-

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+15V

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2 3

1

6 5

7

48

2

1

5

3

4

6

7

1 2 3

1 2 3

1 2 3 1 2 3

1 2 3 1 2 3


Art

. No.

801

16-2

0109

/ 20

04



ICC 350Relay Board30128-352

Die

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D16

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D4

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D18

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D10

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D11

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D7

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D12

1N4148

D13

1N4148

D20

SD101A

D19

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11

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D9

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D8

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1DR C

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56

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R23

5k1

R24

10k

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2

5k1

R19

4k7

R25

n.best.

R2

1

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REL1

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d

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Vd

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D3

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D1

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D5

D4

D3

D2

D1

D0

1 11

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13

12

45

32

14

15

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864

11

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2

13

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11

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5 64

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1

A1

2

A1

3

A1

4

A1

5

A1

6

A1

7

A1

8

A1

9

A2

A2

0

A2

1

A2

2

A2

3

A2

4

A2

5

A2

6

A2

7

A2

8

A2

9

A3

A3

0

A3

1

A3

2

A4

A5

A6

A7

A8

A9

1

2 3 4 5 6 7 8 9

2

3 1

2

3 1

2

3 1

2

3 1

2

3 1

2

3 1


Art

. No.

801

16-2

0109

/ 20

04

ICC 350Relay Board (bare)40128-093


ICC 350 NeurotestNeurotest Board30128-070

AE

NE

1

Die

se Z

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100nF

C2

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C3

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C13

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C14

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D1

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MP

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6

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MP

1

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R1

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Art

. No.

801

16-2

0109

/ 20

04


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Art

. No.

801

16-2

0109

/ 20

04

ICC 350 NeurotestMotherboard Neurotest30128-071

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Art

. No.

801

16-2

0109

/ 20

04

ICC 350 MIC-MIEN-DOKUMIC Board30128-200

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ICC 350 MIC-MIEN-DOKUMIC Board (bare)40128-064


Art

. No.

801

16-2

0109

/ 20

04

ICC 350 MIC-MIEN-DOKUProtection Board30128-661

1

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ICC 350 MIC-MIEN-DOKUProtection Board (bare)40128-141

Appendix APart Numbers

A APPENDIX A 243 / 266

Art.

-No.

801

16-2

0109

/ 20

04

ICC 200 (D)10128-002/-010/-023

30128-060

40128-103

50502-059 30121-195

51501-167

30121-025

30128-065

30121-023

30128-056 51501-167

30121-086 51611-051(Fuses)

51603-000(cpl.)

51601-056

50610-009 51031-043 (Pot.)51501-190 (button)

-191-192

30128-063

A APPENDIX A244 / 266

ICC 200 (UL)10128-202/-204/-205

30128-458

40128-103

50502-069 30128-728

51501-167 30128-065

30128-727

30128-056 51501-167

30121-086

51603-000 (cpl.)

51601-056

50610-009 51031-04351501-19051501-19151501-192

30128-063

30128-691(pin)

30128-725(cpl.)

51611-100 (Fuses)


Art.

-No.

801

16-2

0109

/ 20

04

ICC 200 (INT)10128-009/-015/-036

30128-458

40128-103

50502-059 30128-728

51501-167 30128-065

30128-727

30128-056 51501-167

30121-086 51611-051 (Fuses)

51603-000

51601-056

50610-009 51031-043 (Pot.)51501-190 (Button, cpl.)

-191-192

30128-063

30128-691(pin)

30128-725


ICC 200 (F)10128-051/-054/-056

30128-116

40128-112

50502-059 30121-195

51501-167

30121-025

30128-065

30121-023

30128-056 51501-167

30121-086

51611-051

51603-000

51601-056

50610-009 51031-04351501-19051501-19151501-192

30128-063


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ICC 200Boards

40128-10340128-112 (F)

Gezeich. = Drawn

Geprüft = Checked

Freigabe = Approv.

Datum = Date*

Name = Name

Maßstab = Scale

Datei = File

Projekt = Project

Benennung = Title

Nummer = Number




ICC 300 (D)10128-070, -071

30121-086

30127-011

30128-022 50610-009

51601-025 51611-051(Fuse)

51603-00051031-043 (Pot.)51501-190

-191-192

51501-167

50502-059 30121-025

40128-133

30121-023 30121-023

30121-390

30121-195

51501-16730128-02130128-313


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ICC 300 (UL)10128-213, -214

30121-086

30127-011

30128-022 50610-009

51601-025

51611-100(Fuses)

51031-04351501-190

-191-192

50502-069 40128-133 30128-726

30121-390

30128-728

51501-16730128-02130128-41951501-167

30128-691(Pin)

30128-725

51603-000


ICC 300 (INT)10128-077, -078

30121-086

30127-011

30128-022 50610-009

51601-025 51611-051(Fuse)

51603-00051031-04351501-190

-191-192

50502-059 30128-691 40128-133 30128-726

30121-390

30128-728

51501-16730128-02130128-41951501-167 30128-725


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ICC 300 (F)10128-072, -073

51501-167

50502-059 30121-025

40128-134

30121-023 30121-023

30121-390

30121-195

51501-16730128-02130128-315

30121-086

30127-011

30128-022 50610-009

51601-025 51611-051

51603-00051031-04351501-190

-191-192


ICC 300Boards

40128-133 (D/INT)40128-134 (F)

Gezeich. = Drawn

Geprüft = Checked

Freigabe = Approv.

Datum = Date*

Name = Name

Maßstab = Scale

Datei = File

Projekt = Project

Benennung = Title

Nummer = Number




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ICC 350 (D)10128-016 (Endo)

50502-059

40128-10130128-016 30121-390

30121-025 30121-023 30121-023 30121-195

30128-021

51601-02551501-16751501-167

30121-086

30127-011

51603-000

30128-022 50610-009 51031-04351501-19051501-19151501-192

51611-051


ICC 350 (UL)10128-200, -206 (Endo)

51603-00051501-167

30121-086

30127-011 30128-022 50610-009 51031-04351501-19051501-19151501-192

51611-100(Fuses)

50502-069 40128-101

30128-441 30121-390

30128-726 30128-728

30128-02130128-691

30128-725

51601-025


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ICC 350 (INT)10128-061 (Endo)

50502-059 40128-101

30128-441 30121-390

30128-726 30128-728

30128-02130128-691

30128-725

51601-02551501-16751501-167

30121-086

30127-011

51603-000

30128-022 50610-009 51031-04351501-19051501-19151501-192

51611-051


ICC 350 (F)10128-055 (Endo), -082 (MIC)

50502-059

40128-11030128-08030128-679 (MIC)

30121-390

30121-025 30121-023 30121-023 30121-195

30128-021

30128-668

51501-16751501-167

30121-086

30127-011

51603-00030128-022

30128-680 (MIC)

50610-009 51031-04351501-19051501-19151501-192

51611-051(Fuses)

51604-035

51708-04330121-431


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ICC 350 M-Doku10128-081

50502-059

40128-10130128-533

30121-39030121-025 30121-023 30121-023

30121-19530128-021 30128-668

50600-02151501-167

30121-086

51708-043

30127-011

51601-025 50610-009

51611-051

51603-000

51501-16751031-04351501-190

51501-191/-192

30128-671


ICC 350 Z10128 -065

50502-059

40128-10130128-083 30121-390

30121-025 30121-023 30121-023 30121-195

30128-021

51501-167

51501-167

30121-086

30127-011 51603-000

30128-085 50610-009 51031-04351501-19051501-19151501-192

51611-051

51601-02551604-035

30121-431


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ICC 350 T10128-066

50502-059

40128-10130128-089 30121-390

30121-025 30121-023 30121-023 30121-195

30128-021

51501-167

30121-086

30127-011

51604-035 51603-000

30128-085 50610-009 51031-04351501-19051501-19151501-192

51611-051 51501-167

51601-025


ICC 350 M (INT)10128-083, -310

50502-059 40128-101

30128-606

30121-39030128-726

30128-72830128-021 30128-668

51501-167

30121-086

51708-043

30127-011

51601-025 50610-009

51611-051

51603-000

51501-16751031-04351501-19051501-19151501-192

30128-204

30128-691

30128-725


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ICC 350 M10128-080

50502-059

40128-10130128-533

30121-39030121-025 30121-023 30121-023

30121-19530128-021 30128-668

51501-167

30121-086

51708-043

30127-011

51601-025 50610-009

51611-051

51603-000

51501-16751031-04351501-190

51501-191/-192

30128-671


ICC 350Boards

40128-10140128-110 (F)

Gezeich. = Drawn

Geprüft = Checked

Freigabe = Approv.

Datum = Date*

Name = Name

Maßstab = Scale

Datei = File

Projekt = Project

Benennung = Title

Nummer = Number



AppendixB

Abbreviations, Notes,Addresses

264 / 266 B APPENDIX B

265/ 266B APPENDIX B

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AppendixAbbreviationsNotesAddresses

Abbreviations

The following list summarizes all those abbreviations and symbols which are used in this service manual.

Abbreviation means Abbreviation means

NE neutral electrode ö phase angle

| non-split NE V(p) volts (peak value)

|| split NE A(eff) amperes (r.m.s. value)

Parts lists

This service manual includes no parts lists. However, if you should need to refer to part numbers, please seeAppendix A.

Measuring equipment

For a list of recommended measuring equipment for servicing the units ICC 200, ICC 300 and ICC 350,please refer to this service manual (Chapter 1, Test program 16).

Diagrams of electrical dimensions

The diagrams of the electrical dimensions are not shown in this service manual. However, you will findthese printed in the instruction manuals for the respective unit.

Any questions?

This service manual has been put together carefully and was subjected to a continuous improvement processduring its creation by the Service Department and/or the Development Department at ERBE Elektromedizin.Nevertheless, you may still have questions; additionally, this manual cannot assume to be perfect andcompletely without error. In such cases, please contact:

Contents, formulation, structure, technicalinformation

Dipl.-Phys. Michael Grosse (Development Dept.)

Tel.: (+49) 70 71 / 755–254

E-mail: [email protected]

Technical questions regarding service and theunits

Service Manager Roland Bauer (Service Dept.)

Tel.: (+49) 70 71 / 755–454

E-mail: [email protected]

Your notes

ERBE - numlor.fr · Service manual ERBE ICC 200 ICC 300 H-E ICC 350 09.2004

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Transcript of ERBE - numlor.fr · Service manual ERBE ICC 200 ICC 300 H-E ICC 350 09.2004