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    ISSUED............... DEC. 2006

    REVISED ............REPAIR MANUAL

    GTS-100NSERIES

    ELECTRONIC TOTAL STATION

    TOPCON CORPORATION

    Printed in Japan

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    This document contains proprietary and confidential information of

    Topcon Corporation, and its description is protected under copyright

    law and international conventions.

    Any unauthorized use, duplication, reproduction, modification,

    disclosure, distribution or transfer of any part of this document is

    strictly prohibited.

    NOTICE

    Copyright 2006 Topcon Corporation, All rights reserved.

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    CONTENTS

    Page

    1. INTRODUCTION ........................................................................................................................... 1-1

    1-1 Introduction ................................................................................................................................. 1-11-2 How to Use This Manual ............................................................................................................ 1-2

    2. PRODUCT OUTLINE................................................................................................................... 2-12-1 Nomenclature .............................................................................................................................. 2-1

    2-2 Display ........................................................................................................................................ 2-3

    2-3 Operating Key ............................................................................................................................. 2-4

    2-4 Function Key (Soft Key) ............................................................................................................. 2-5

    2-5 Star key mode ............................................................................................................................. 2-6

    2-6 Serial signal RS-232C connector ................................................................................................ 2-8

    3. PRINCIPLE ..................................................................................................................................... 3-13-1 Principle of Angular Measurement ............................................................................................. 3-1

    3-2 Principle of Distance Measurement ............................................................................................ 3-4

    4. ERROR CODE TABLE................................................................................................................ 4-1

    5. DISASSEMBLY PROCEDURE................................................................................................. 5-15-1 Instrument Disassembly Procedure ............................................................................................ 5-1

    5-2 Telescope (EDM) Disassembly Procedure ................................................................................. 5-15

    6. TROUBLE SHOOTING ............................................................................................................... 6-16-1 Trouble Shooting Flow Chart ..................................................................................................... 6-16-2 Trouble Shooting of Angular Measurement Problem Unit ........................................................ 6-15

    7. EACH UNIT REPLACEMENT PROCEDURE ..................................................................... 7-17-1 Angular Measurement System Unit Replacement Procedure ..................................................... 7-1

    7-2 EDM System Unit Replacement Procedure ................................................................................ 7-3

    7-3 Other Units Replacement Procedure ........................................................................................... 7-4

    8. REPAIR OUTLINE ........................................................................................................................ 8-18-1 Repair Outline ............................................................................................................................. 8-1

    8-2 Factory Mode .............................................................................................................................. 8-28-3 Setting Mode 1 ............................................................................................................................ 8-30

    8-4 Selecting Mode ........................................................................................................................... 8-35

    9. ANGULAR MEASUREMENT READING SYSTEM REPAIRS....................................... 9-19-1 How to Use the Angular Measurement System Unit Positioning Tools .................................... 9-1

    9-2 Angular Measurement System Unit Installation Adjustment ..................................................... 9-7

    9-3 Horizontal Angle Round Rotation Check ................................................................................... 9-20

    10. PLATE SYSTEM REPAIRS ..................................................................................................... 10-110-1 Nomenclature .............................................................................................................................. 10-1

    10-2 Angular Measurement Digital System Repairs .......................................................................... 10-2

    10-3 Setting of Integral Time .............................................................................................................. 10-4

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    11. TELESCOPE (EDM) SYSTEM REPAIRS ........................................................................... 11-111-1 Nomenclature .............................................................................................................................. 11-2

    11-2 Unit Nomenclature and Functions .............................................................................................. 11-3

    11-3 Preparation for General Adjustment ........................................................................................... 11-4

    11-4 Setting of APD Bias .................................................................................................................... 11-5

    11-5 Reference Output Adjustment .................................................................................................... 11-611-6 How to Check Chopper/Circular Operation ............................................................................... 11-8

    11-7 Telemeter Optical Axis and EDM Optical Axis Adjustment ..................................................... 11-10

    12. UPLOAD OF SOFTWARES .................................................................................................... 12-112-1 Check of Software Version ......................................................................................................... 12-2

    12-2 Upload of Softwares ................................................................................................................... 12-4

    13. ADJUSTING MODE................................................................................................................... 13-113-1 Adjustment of Vertical Angle 0 Datum ...................................................................................... 13-1

    13-2 How to Set the Instrument Constant Value ................................................................................ 13-2

    13-3 Reference frequency check mode ............................................................................................... 13-3

    14. REPAIR TOOL LIST .................................................................................................................. 14-1

    15. ADHESIVES AND LUBRICANTS ......................................................................................... 15-115-1 Adhesives and Application Locations ........................................................................................ 15-1

    15-2 Lubricants and Application Locations ........................................................................................ 15-2

    16. SPECIFICATIONS ...................................................................................................................... 16-1

    APPENDIX.............................................................................................................................APPENDIX-1APPENDIX1 Inspection Procedure ..................................................................................APPENDIX-1

    APPENDIX1-1 Theodolite System Accuracy Inspection ...............................................APPENDIX-2

    APPENDIX1-2 Telescope (EDM) System Accuracy Inspection ...................................APPENDIX-5

    APPENDIX2 Precaution When Charging or Storing Batteries ........................................APPENDIX-8

    APPENDIX2-1 Recharging ............................................................................................APPENDIX-8

    APPENDIX2-2 Discharge ...............................................................................................APPENDIX-8

    APPENDIX2-3 Storage ...................................................................................................APPENDIX-9

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    1-1 Confidential : duplication and reproduction prohibited

    1. INTRODUCTION

    1-1 Introduction

    The GTS-100N series is the electronic total station of the Topcon Green Label brand.

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    1-2 How to Use This Manual

    This manual describes the following points.

    1) Replacement of parts :

    The parts must be replaced by units (electrical, mechanical and optical units).

    2) Replacement procedure of parts :Necessary disassembly procedures and adjustments after replacement are shown with illustrations and

    flow charts.

    Don't perform repairs with other parts, units or methods (procedures, tools or others) except those mentioned

    in the manual and parts list. An unallowable repair not only hinders a normal repair work but also causes

    another trouble.

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    2. PRODUCT OUTLINE

    2-1 Nomenclature

    Objective lens

    Adjustment screwfor circular level

    Instrumentcenter mark

    Optical plummettelescope

    Tribrach fixing lever

    Leveling screw

    Base

    Handle locking screw

    Circular level

    Display unit

    Serial signal connector

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    Horizontal

    motion clamp

    On-board batteryBT-G1

    Instrumentcenter mark

    Horizontaltangent screw

    Battery locking lever

    Sighting collimator

    Telescope focusing knob

    Telescope grip

    Telescope eyepiece

    Vertical motion clamp

    Vertical tangent screw

    Plate level

    Display unit

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    2-2 Display

    DisplayThe display uses a dot matrix LCD which has 4 lines and 20 characters per line. In general, the upper three

    lines display measured data, and the button line displays the soft key function which changes with the mea-

    suring mode. Contrast and Illumination

    The contrast and illumination of diplay window are adjusted, see Chapter 6 SPECIAL MODE (Menu

    Mode) or section 1.5 Star key mode.

    Heater (Automatic)

    The built-in automatic heater functions when the temperature is below 0C. This keeps the displays speed

    up at temperatures lower than 0C. To set the heater ON/OFF, see section 6.4.6 Heater ON/OFF. The

    operating time will become short if a heater is used.

    Example

    Display marks

    Display Contents Display Content

    V V-angle * EDM working

    HR H-angle right m Meter unit

    HL H-angle left f Feet and inch unit

    HD Horizontal distance

    VD Relative elevation

    SD Slope distance

    N N coordinate

    E E coordinate

    Z Z coordinate

    V : 9010'20"HR: 12030'40"OSET HOLD HSET P1

    Angle measurement mode

    V-angle : 9010'20"H-angle : 12030'40"

    HR: 12030'40"HD* 65.432 mVD: 12.345 mMEAS MODE S/A P1

    Distance measurement mode

    Horizontal-angle : 12030'40"Horizontal distance : 65.432mRelative elevation : 12.345m

    HR: 12030'40"HD* 123.45 fVD: 12.34 fMEAS MODE S/A P1

    Horizontal-angle : 12030'40"Horizontal distance : 123.45ftRelative elevation : 12.34ft

    HR: 12030'40"HD* 123.04.6fVD: 12.03.4fMEAS MODE S/A P1

    Horizontal-angle : 12030'40"Horizontal distance : 123ft4in6/8inRelative elevation : 12ft3in4/8in

    Feet unit Feet and inch unit

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    2-4 Function Key (Soft Key)

    The Soft Key message is displayed at the bottom line of display. The functions are according to the dis-

    played message.

    Angle measurement

    Distance measurement mode

    page Soft key Display mark Function

    1

    F1 0SET Angle of Horizontal is set to 000'00"

    F2 HOLD Hold the horizontal angle

    F3 HSET Sets a required horizontal angle by entering numerals.

    F4 P1 The function of soft keys is shown on next page (P2).

    2

    F1 TILTSetting Tilt Correction

    If ON, the display shows tilt correction value.

    F2 REP Repetition angle measurement mode

    F3 V% Vertical angle percent grade (%) mode

    F4 P2 The function of soft keys is shown on next page (P3).

    3

    F1 H-BZ Sets the buzzer sound for every horizontal angle 90

    F2 R/L Switches R/L rotation of horizontal angle.

    F3 CMPS Switches the COMPASS ON/OFF of vertical angle.

    F4 P3 The function of soft keys is shown on next page (P1).

    page Soft key Display mark Function

    1

    F1 MEAS Start measuring

    F2 MODE Sets a measuring mode, Fine/Coarse/Tracking

    F3 S/A Select set audio mode

    F4 P1 The function of soft keys is shown on next page (P2).

    2

    F1 OFSET Select Off-set measurement mode

    F2 S.O Select stake out measurement mode

    F3 m/f/i Switches meter, feet or feet and inch unit.

    F4 P2 The function of soft keys is shown on next page (P1).

    HR: 12030'40"HD* 123.45 fVD: 12.34 fH-BZ R/L CMPS P3

    HR: 12030'40"HD* 123.45 fVD: 12.34 fTILT REP V% P2

    V : 9010'20"HR: 12030'40"OSET HOLD HSET P1

    Angle measurement mode Distance measurement mode

    HR: 12030'40"HD* 123.45 fVD: 12.34 fOFSET S.O m/f/i P2

    HR: 12030'40"HD* [r]

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    Coordinate measurement mode

    2-5 Star key mode

    Press the ( ) key to view the instrument options.

    The following instrument options can be selected from the ( ):

    1. Adjustment the contrast of the diaplay (0 to 9 steps) [ ]

    2. Adjustment the reticle illumination (1 to 9 steps) [ or ]

    3. Turn the backlight of the display ON/OFF [F1]

    4. Setting Tilt Correction [F2]

    5. S/A (set audio) mode [F4]

    Note: Star key mode does not function when the same function as the function assigned to the star keymode is performed from the main routine.

    page Soft key Display mark Function

    1

    F1 MEAS Start measuring

    F2 MODE Stes a measuring mode, Fine/Coarse/Tracking

    F3 S/A Select set audio modeF4 P1 The function of soft keys is shown on next page (P2).

    2

    F1 R.HT Sets a prism height by input values.

    F2 INSHT Sets an instrument height by input values.

    F3 OCC Sets an instrument coordinate point by input values.

    F4 P2 The function of soft keys is shown on next page (P3).

    3

    F1 OFSET Select Off-set measurement mode

    F3 m/f/i Switches meter, feet or feet and inch unit.

    F4 P3 The function of soft keys is shown on next page (P1).

    Key Display mark Function

    F1 Turn the backlight of the display ON/OFF

    F2Setting Tilt Correction

    If ON, the display shows tilt correcton value.

    F4

    The light acceptance quantity level for the EDM (SIGNAL), the atmospheric

    correction value (PPM) and correction value of prism constant (PSM) are dis-

    played.

    or Adjust the contrast of the display (0 to 9 setps)

    orAdjust the Reticle Illumination (1 to 9 steps)

    ON/OFF of the reticle illumination is linked with ON/OFF of the backlight.

    V : 7742'30"HR: 12030'40"OSET HOLD HSET P1

    Press the star ( ) key.

    V : 7742'30"HR: 12030'40"OSET HOLD HSET P1

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    Adjustment the contrast (0 to 9 ) of the displayThis enable you to adjust the contrast of the display.

    Press the up or down arrow keys to adjust the contrast.

    Adjustment the reticle illumination (1 to 9 )This enable you to adjust the reticle illumination.

    Turn the display back light ON/OFFTo turn the back light ON, press the [F1] key. Press [F1] again to turn the back light OFF.

    Tilt correction

    The tilt setting mode performed here will not be memorized after powering OFF. To set TILT correction in

    the initialized setting ( it is memorized after powering OFF), see Section 6.4.3 Vertical and Horizontal

    Angle Tilt correction ( Tilt ON/OFF).

    Set audio modeThe light acceptance quantity level (Signal level) is displayed in this mode.

    When reflected light from the prism is received, a buzzer sounds. This function is good for easy collimation

    when the target is difficult to find.

    Press the [F4] key to view the set audio screen.

    (1) To stop the buzzer, refer to Chapter 16 SELECTING MODE.

    (2) Also, it is possible to display the signal level in Distance Measuring Mode.

    The temperature, pressure, PPM, and PSM can be viewed in set audio mode.

    Refer to Chapter 10 SET AUDIO MODE, Chapter 11 SETTING THE PRISM CONSTANT VALUE

    and Chapter 12 SETTING ATMOSPHERIC CORRECTION , for further instructions.

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    2-6 Serial signal RS-232C connector

    The serial signal connector is used for connecting the GTS-100N series with a computer or TOPCON Data

    Collector, which enables the computer to receive measured data from the GTS-100N series or to send pre-

    set data of horizontal angle, etc. to it.

    The following data will be output at each mode.

    The display and the output at the coarse mode are the same as the contents above.

    Output at the tracking mode is displayed as distance data only.

    The details necessary for the connection with the GTS-100N Series are obtained from its Interface Manual

    which is optionally available. Please refer to the manual.

    Mode Output

    Angle mode ( V, HR or HL) V, HR (or HL)

    Horizontal distance mode (HR, HD, VD) V, HR, HD, VD

    Slope distance mode (V, HR, SD) V, HR, SD, HD

    Coordinate mode N, E, Z, HR (or V, HR, SD, N, E, Z)

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    3. PRINCIPLE

    3-1 Principle of Angular Measurement

    (1) Principle

    The pattern of the scale is divided into 1260 lines of equal pitch. The line width of the signal "R" is stable.

    The line width of the signals "A", "B" and "C" is modulated according to the different cycles. (Fig. 1)The signals are arranged in the order of "R" , "A", "B" and "C". When the pattern of the scale is projected,

    the waveform is generated on the CCD. (Fig. 2) Obtain an integral value by every four waveform lines and

    find out the line whose change is the smallest. It is "R" because the "R" width is stable. When you have found

    out "R", the next is "A" and then "B" and "C" . Therefore the frequency of "A", "B" and "C" can be obtained.

    (Fig. 3)

    First, carry out Fourier transformation (DFT) for the equal-pitch signals to execute the accurate calculation of

    1 pitch (1028 seconds) or less. Secondly, arrange the waveforms of the frequency for the "A", "B" and "C", obtain

    each phase and, by combining the phases, obtain the angle of the block including "A", "B" and "C". Thirdly, obtain

    the angle of the pitch unit by using the kind of the pattern including the reference position. Finally, combine

    the accurate and rough calculations and arrange the digits to obtain the angular measurement value.

    LED

    MirrorCCD

    Scale

    (V)-angular measurement reading unit (H)-angular measurement reading unit

    LED

    Scale

    CCD

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    (2) Angular measurement electrical system block diagram

    InternalBattery

    Ni-MH

    2300mAh

    External

    communicationUnit

    DisplayUnit

    (Reverse)

    CPU

    Unit

    Powersupply

    (3.3V,5V)

    CPU

    G.A

    Memory

    DisplayUnit

    (Normal)

    EDM

    Angle

    Measuremen

    t

    UnitH1

    Angle

    Measurement

    UnitH2

    V-CCD

    Unit

    TiltUnit

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    3-2 Principle of Distance Measurement

    (1) Principle

    Light is emitted to the corner cubes placed on the ground being measured. The amount of the light delay

    between the instrument and corner cube can be measured from the reflected light and this value is converted

    to distance.Topcon EDMs modulate light at the four frequencies of 30MHz, 1.8MHz, 117kHz and 113kHz so that dis-

    tances of up to several kilometers can be measured accurately and displayed. The processes are as follows.

    One of the four frequencies (30MHz, 1.8MHz, 117kHz and 113kHz) is selected by the control signal from

    the CPU and the modulated light is emitted by the LED.

    The light is reflected by the corner cube and returns.

    The returned light undergoes the following in the amplifier.

    Amplification: the signal is enhanced. Mixed wave detection: the frequency component is made 3.6kHz. Waveform rectification: the light is made into the frequency measurement signal.

    A/D conversion is done for the measurement signal obtained by and it is changed into the distance data

    by the microcomputer.

    Perform the procedures to at each of the frequencies, 30MHz, 1.8MHz, 117kHz and 113kHz. The

    "C" mark of the indicator moves to indicate the status.

    The CPU combines the results from each of the frequencies and displays the distance.

    1

    2

    3

    4 3

    5 1 4

    6

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    (2) Distance measurement electrical system block diagram

    Motor

    Gear

    Circular

    Chopper

    Motor

    Gatearray

    (IC2)

    Emitting

    D

    iode

    EmittingDiode

    Driver

    GATE

    TCXO

    XTAL1

    VCXO

    XTAL2

    Pre-AMP

    Re

    ceiving

    Dio

    de

    GATE

    MIXER

    D-OSC

    CPU

    UNIT

    A/D

    Tx

    Rx

    CPU

    (IC1)

    AMP

    MIXER

    AMP

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    4. ERROR CODE TABLE

    (1) Error codes

    Display Description CountermeasureRef.Page

    Tilt Over When the inclination of theinstrument exceeds the automaticcorrection range

    Level the instrument correctly. If this error isstill displayed, the probable causes are as fol-lows :1. Tilt offset is deviated.2. Tilt installation error is excessive.Carry out repair according to the instructionsin the right page.

    6-5

    V ANGLEERRORH ANGLEERRORVH ANGLEERROR

    When the angular measurementsystem is abnormal

    This error is displayed when the instrument ortelescope rotates too fast but it is not trouble.If this error is constantly displayed, check thedetails of error code with the factory modeand take the repair method of the error code.

    6-6

    E35 When REM (remote elevationmeasurement) is done within6 from zenith or nadir

    Check without 6 from zenith or nadir and, ifthe error message is not displayed, there is noproblem.

    6-7

    E61 EDM EEPROM error hasoccurred. When EEPROM on D-OSC is abnormal, this error is dis-played.

    Replace D-OSC. 6-8

    E66 Instrument constant L1/L2/L3setting error has occurred. Whenan abnormal value is input for theinstrument constant in factorymode (P. 8-16), this error is dis-

    played.

    Perform measurement (input the instrumentconstant) again. If the problem is not solvedyet, replace D-OSC.

    6-8

    E68 Chopper operation error hasoccurred. When chopper does notoperate, this error is displayed.

    Connect the tool and check the chopper opera-tion. Then, replace EDM Base or D-OSCunit.

    6-9

    E69 When a command is sent andEDM does not respond within 1second, this error is displayed.

    Probable causes are as follows: Cable isfaulty, cable is not arranged correctly, connec-tor is faulty, slip ring is faulty, slip ring brushis in contact, or there is a problem around theEDM power supply or CPU unit. Locate thetrouble place and replace the unit.

    6-10

    E71 When the vertical angle zeropoint is adjusted in a wrong pro-

    cedure, this error is displayed.

    Check the procedure and readjust. 6-11

    E72 When the vertical angle zeropoint is sharply deviated in itsadjustment, this error is dis-played.

    Start the adjustment from the first again.If the error message is still displayed, the scaleinstallation position may be 5 or more.Carry out repair according to the instructionsin the right page.

    6-11

    E73 During the vertical angle zeropoint adjustment, when the instru-ment is not leveled or when thevertical/horizontal angle correc-tion device malfunctions, thiserror is displayed.

    Level the instrument again and readjust. Invertical angle zero point adjustment, level theinstrument within 2'. If the error message isstill displayed, check the tilt offset/tilt installa-tion adjustment.

    6-11

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    Display Description CountermeasureRef.Page

    E81 When the angle unit of the instru-ment (DEG, GON, MIL) is differ-ent from the angle unit set incommunication, this error is dis-played.

    Fit the units each other. 6-12

    E82 While the ACK mode is set at"standard", the instrument outputsdata but the external devices suchas FC, PC, etc. do not send ACKwithin the regular time. Underthis condition, when data is sentten times but ACK is not received,this error is displayed.

    Check the following points: Parameter setting,software at PC side, cable, wiring/contactaround 6PIN connector and wiring/contactaround slip ring. Carry out repair according tothe instructions in the right page.

    6-13

    E92 When tilt offset is not set within2' in factory mode, this error is

    displayed.

    Install tilt to set the tilt offset within 2'. 6-14

    E99 Non-volatile memory error Perform initialization. If this error is still dis-played, replace the CPU unit.

    6-14

    E600 Gate array error has occurred.Gate array on the CPU unit mal-functions.

    Replace the angular CPU unit (PCB31). 6-6

    E621~E624 CCD integral time "Low" errorhas occurred. When light is accu-mulated into CCD in a too shorttime, this error message is dis-played.

    Probable causes are as follows:1. CCD unit2. LED unit (only for V)3. CPU unitReplace the unit.

    6-6

    E631~E634 CCD integral time "High" errorhas occurred. When light is accu-mulated into CCD in a too longtime, this error message is dis-played.

    Probable causes are as follows:1. CCD unit2. LED unit (only for V)3. CPU unitReplace the unit.

    6-6

    E641~E644 Pattern pitch error has occurred.When the pattern pitch accumu-lated in CCD is out of standard,this error message is displayed.

    Probable causes are as follows:1. Set values for CPU unit are abnormal.2. CCD unit3. Scale (soil and damage)Adjust the factory mode or replace the unit.

    6-6

    E681~E684 LED_PWM_High error hasoccurred. When light intensityaccumulated in CCD is excessive,this error message is displayed.

    Probable causes are as follows:1. LED unit (only for V)2. CCD unit3. CPU unitReplace the unit.

    6-6

    E691~E694 LED_PWM_Low error hasoccurred. When light intensityaccumulated in CCD is insuffi-cient, this error message is dis-played.

    Probable causes are as follows:1. LED unit (only for V)2. CCD unit3. CPU unitReplace the unit.

    6-6

    E731~E734 CCD pattern contrast error hasoccurred. When trouble hasoccurred frequently in the CCDwaveform (RABC pattern), thiserror is displayed.

    Probable causes are as follows:1. Scale (soil and damage)2. CCD unit3. CPU unitReplace the unit.

    6-6

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    Display Description Countermeasure Ref.Page

    E741~E744 A_Phase error has occurred.When the A pattern phase isabnormal, this error is displayed.

    Probable causes are as follows:1. Scale (soil and damage)2. CCD unit3. CPU unitReplace the unit.

    6-6

    E751~E754 B_Phase error has occurred.When the B pattern phase isabnormal, this error is displayed.

    Probable causes are as follows:1. Scale (soil and damage)2. CCD unit3. CPU unitReplace the unit.

    6-6

    E761~E764 C_Phase error has occurred.When the C pattern phase isabnormal, this error is displayed.

    Probable causes are as follows:1. Scale (soil and damage)2. CCD unit3. CPU unitReplace the unit.

    6-6

    E771~E774 Angle calculation error hasoccurred. When data of the angu-lar measurement CCD unit isabnormal, this error is displayed.

    Probable causes are as follows:1. CCD unit is faulty. (Installed position)2. CPU unit3. Scale (soil and damage)Replace the unit.

    6-6

    FILEEXISTS

    The file with the same nameexists.

    Check the file name and input it again. -----

    FULL FILES Files have already been made upto maximum quantity (30) andmore files cannot be made.

    Reduce the file quantity by deleting theunnecessary file, etc.

    -----

    FILE NOT

    SELECTED

    When file data is necessary, a file

    to be used is not selected.

    Select a file and execute the procedure again. -----

    PT# DOESNOT EXIST

    The input point name does notexist in the internal coordinatedata.

    Check the point name and input it again. -----

    CALCERROR

    When setting a direction angle,the input rear view point coordi-nate is the same as the instru-ment constant coordinate

    When the layout mode is exe-cuted, the input layout coordi-nate is the same as theinstrument constant coordinate

    When setting a new point, itscoordinate cannot be calculatedbecause of wrong measurement,etc.

    Check the point name and input it again. When setting a new point, perform measure-

    ment again.

    -----

    PT# EXIST When setting a new point name,the same point name alreadyexists in the internal coordinatedata.

    Select another point name and store it. -----

    LIMITOVER

    A numerical value out of therange has been input.

    When setting a new point, itscoordinate cannot be calculated

    because of wrong measurement,etc.

    Check the value and input it again. Perform measurement again.

    -----

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    5. DISASSEMBLY PROCEDURE

    5-1 Instrument Disassembly Procedure

    : Indicates the direction of moving or removing.

    : Indicates a part that should be removed for disassembly.

    Procedure Illustration

    Ha

    ndleRemoval

    Loosen the handle screw and then remove the

    handle unit.

    InternalBattery

    Removal

    As pushing down the battery locking lever,

    remove the internal battery.

    LeftCoverRemoval

    Remove the 5 screws.

    Notes:

    The waterproof Teflon washer is attachedto all the screws.

    When assembling, tighten the screws with

    torque of 20Ncm (2kgfcm).

    Note

    Torque is shown by SI unit (Ncm).

    When using a torque screwdriver,

    be careful about the unit.

    1

    2

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    Procedure Illustration

    Use tweezers to disconnect the 9 connectors.

    CPU

    Uni

    tRemoval

    Remove the 4 screws.

    Use tweezers to disconnect the connector from

    the rear of the CPU unit.

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    Procedure Illustration

    RightCoverRemoval

    Remove the 8 screws.

    Notes:

    The waterproof Teflon washer is attachedto all the screws.

    When assembling, tighten all the screws

    with torque of 20Ncm (2kgfcm).

    DisplayUnitRemoval

    Remove the 4 screws.

    Note: When assembling, tighten the screws

    with torque of 15Ncm (1.5kgfcm).

    (Tighten them with the same torque for

    the reverse display unit.)

    Remove the clamp of the connector on the rear of

    the display unit and then remove the flexible

    cable.

    (Take the same procedure for the reverse display

    unit.)

    1

    2

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    Procedure Illustration

    TiltUnitRemoval

    Remove the 2 screws with a hexagonal wrench

    (M2.5).

    Notes:Washers are set at the end faces of the tilt

    unit and standard.

    When installing the tilt unit, tighten the

    screws with torque of 90Ncm (9kgfcm).

    Tool to be used: ST-BA-06

    VBrushUnitRemoval

    Remove the 2 screws.

    Note: When removing, be careful not to bend

    the brush.

    Ang

    leMeasurementLEDUnit(V)Re

    moval Remove the 2 screws.

    1

    2

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    Procedure Illustration

    VerticalTangentAdjustingUnitRem

    oval Use a hexagonal wrench (M1.5) to remove the

    screw.

    VerticalClampUnitRemoval

    Use a flexible wrench (ST-TK-17) to remove the

    metal fastener.

    Remove the vertical clamp unit.

    Note: When removing, be careful about the

    middle, right and left pads.

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    Procedure Illustration

    VSlipRingUnitRemoval

    Use tweezers to disconnect the cables from the

    5-pin connector.

    Remove the 3 screws and then pull out the V slip

    ring unit.

    OrangeBlack

    WhiteBlue

    Red5-pin cable arrangement

    Float this part lightly and then disconnect the cables.

    If the cables are removed forcedly, the connector

    and cables are damaged.

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    Procedure Illustration

    SpacerRemoval

    Use tweezers to remove the spacer.

    Note: When you try to remove the spacer, it is

    difficult because the screw lock isapplied. Dissolve the screw lock with a

    solvent.

    LeftH

    orizontalAxisRemoval

    Remove the 3 screws.

    Note: When assembling, tighten the screws

    with torque of 70Ncm (7kgfcm).

    Loosen the 3 left metal mounting screws through

    the hole of the left horizontal axis.

    Note: When assembling, tighten the screws

    with torque of 90Ncm (9kgfcm).

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    Procedure Illustration

    LeftHorizontalAxisRemoval

    Remove the left horizontal axis.

    Notes:

    When installing, the triangular mark ofscale must be at the lower side with the

    telescope objective lens at the left.

    When installing, the position mark (2)(following illustration) of the left metal

    must be at the lower side.

    RightHorizontalAxisRemoval

    Remove the 3 screws.

    Notes:

    The installation mark is put on the right

    horizontal axis. When installing, this

    mark must be at the objective lens side.

    When installing, torque is 90Ncm

    (9kgfcm).

    RightMetalRemoval

    Remove the 4 screws.

    Note: When installing, torque is 90Ncm

    (9kgfcm).

    1

    2

    Left metal

    Position mark (2) Triangular mark Position mark (2)

    1

    Object lens side

    Installation mark Right horizontal axis

    2

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    Procedure Illustration

    Telescope(EDM)Removal

    Lift up the telescope (EDM) unit to remove it.

    HorizontalTa

    ngentAdjustingUnitRemoval

    Loosen the tangent cylinder and remove the piston.

    Note: Using a wide screwdriver, remove the

    piston not to damage the slotted groove.

    Use a hexagonal wrench (M1.5) to loosen the 2

    screws.

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    Procedure Illustration

    CenterCoverRemoval

    Remove the 2 screws and then remove the center

    cover.

    Note: When assembling, apply grease (SH-33M) evenly to the whole rear of center

    cover.

    S

    tandardRemoval

    Use a hexagonal wrench (M4) to remove the 3

    screws.

    Note: When assembling, tighten the screws

    with torque of 400Ncm (40kgfcm).

    Lift up the standard to remove it.

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    Procedure Illustration

    CCD

    HolderRemoval

    Remove the 2 screws.

    H1AngularMeasur

    ementUnitRemoval Remove the 2 screws.

    Note: When removing the H1 angular mea-

    surement unit, be careful not to contact

    it with the scale.

    H2

    AngularMeasurementUnitRemoval Remove the 2 screws.

    Note: When removing the H2 angular mea-

    surement unit, be careful not to contact

    it with the scale.

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    Procedure Illustration

    LowerCoverRemoval

    Remove the 3 screws.

    Note: The waterproof Teflon washer is attached

    to all the screws.

    VerticalAxisUnitRemoval

    Use a hexagonal wrench (M2.5) to remove the 4

    screws.

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    Procedure Illustration

    VerticalAxis

    UnitRemoval

    How to install the vertical axis unit

    Against the housing mark ( mark) of upper

    panel, the triangular mark ( ) of scale mustbe at the illustrated position.

    The tightening torque of the vertical axis unitmounting screws is 120Ncm (12kgfcm).

    Tool to be used: ST-DA-45

    Lift up the vertical axis Ass'y and remove it from

    the upper panel.

    Upper panel housing markTrianglar mark

    ( mark)

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    5-2 Telescope (EDM) Disassembly Procedure

    Procedure Illustration

    Le

    nsBarrelUpperCoverRemoval

    Remove the 4 screws and then remove the lens

    barrel upper cover.

    Notes:The waterproof Teflon washer is attached

    to all the screws. Be careful.

    When assembling, the tightening torque is

    20Ncm (2kgfcm).

    LensBarrelLowerCoverRemoval

    Remove the 4 screws and then remove the lens

    barrel lower cover.

    Notes:

    The waterproof Teflon washer is attached

    to all the screws. Be careful.

    When assembling, the tightening torque is

    20Ncm (2kgfcm).

    D-OSC

    UnitRemoval

    Use tweezers to unlock the connector and then

    disconnect the flexible cable.

    1

    2

    1

    2

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    Procedure Illustration

    D-OSC

    Un

    itRemoval

    Use the fiber wrench (ST-TF-02) to remove the

    optical emitting fiber.

    Remove the 3 screws.

    Use tweezers to disconnect the cables from the

    rear connector of the D-OSC unit.

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    Procedure Illustration

    P

    late(atD-OSC

    Side)Remova

    l

    Remove the 4 screws.

    OpticalReceivingFiberRemoval

    Use a hexagonal wrench (M0.89) to loosen the 1

    screw.

    Use tweezers to remove the optical receiving

    fiber.

    Note: When removing the optical receiving

    fiber, be careful not to crush the root of

    fiber.

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    Procedure Illustration

    DecorationR

    ingRemoval

    Use the decoration ring turner (ST-DA-12) to

    remove the decoration ring.

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    Procedure Illustration

    ObjectiveLensBarrelUnitRemoval

    Remove the objective cap.

    Loosen the 2 screws.

    Make sure the alignment marks of the lens barrel

    Assy and objective unit are aligned.

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    Procedure Illustration

    Use the objective plate wrench (ST-DA-13) to

    loosen the objective unit.

    ObjectiveLensBarrelUnitRemoval

    Turn the objective removal tool (ST-DA-14)

    clockwise to raise the objective unit.

    Remove the objective unit.

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    Procedure Illustration

    StopperPlateRem

    oval

    Remove the 2 screws.

    Remove the stopper plate.

    EyepieceLensCoverRemoval

    Remove the eyepiece lens cover.

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    Procedure Illustration

    EyepieceLensUnitRemoval

    Remove the 4 screws.

    Note: When assembling, tighten the screws

    with torque of 20Ncm (2kgfcm).

    Remove the eyepiece lens unit.

    E

    yepieceLensBaseUnitRemo

    val

    Remove the 3 screws.

    Note: When assembling, tighten the screws

    with torque of 30Ncm (3kgfcm).

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    Procedure Illustration

    Ey

    epieceLensBaseUnitRemov

    al

    Remove the eyepiece lens base unit.

    Fo

    cusRingRemoval

    Remove the 3 screws.

    Remove the focus ring holder.

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    Procedure Illustration

    FocusRingRemoval

    Turn the focus ring clockwise to remove it.

    Intern

    alAssemblyRemoval

    Use a rod pin to loosen the lead pin.

    Remove the lead pin.

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    Procedure Illustration

    InternalAssemblyRemoval

    Remove the internal Assy.

    EDM

    BaseUnitRemoval

    Remove the 3 screws.

    The screws are secured with screw lock. Use

    alcohol to dissolve the screw lock before remov-

    ing the screws. After completing the adjustment,

    reapply the screw lock on the screws.

    Remove the EDM base unit.

    When removing the EDM base unit, the dichroic

    prism is blocked and cannot be lifted straight up,

    so move it slightly toward to the objective lens

    side, then remove it. Be especially careful when

    handling the fiber.

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    Procedure Illustration

    Remove the 2 screws.

    DichroicPrism

    Ass'yRemoval

    Remove the dichroic prism Ass'y.

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    6. TROUBLE SHOOTING

    6-1 Trouble Shooting Flow Chart

    This chapter will explain the replacement of units against symptoms by using flow charts to locate the

    problem unit.

    (Example)

    * Before replacing the PCB unit, obtain the user data and user set values.

    NO

    YES

    Symptom

    * Reference item

    Diagnosis

    Find and replace the problem unit.

    NO

    YES

    NO

    YES

    Diagnosis Diagnosis

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    (1) The power is not turned on.

    Refer to the following table for other probable problem units.

    If any connector is disconnected (including the improper contact) on the PCB or if the software is not installed

    properly, the power may not be turned on, either. (Check the contact or install again and then check the

    operation.)

    Unit How to check

    Display unit Display unit cable

    Check the operation of the power switch on the normal and reverse sides. If only

    the reverse (or normal) side operates normally, the normal (or reverse) display

    unit may malfunction. Replace the unit (display unit, display unit cable, etc.) andcheck the operation.

    Right cover unit Use the external power supply (tool power supply), etc. and supply the powerfrom the bottom of the instrument. If normal operation is done, the instrument's

    right cover unit may malfunction. Replace the unit and check the operation.

    NO

    YES

    The above symptom has occurred.

    Connect it properly.

    Is the terminalvoltage of the internalpower supply 7.2V?

    Replace the CPU unit.

    Recharge.

    NO

    YES

    Is the terminal voltage 7.2V?

    NO

    YES

    Is it connectedto the instrument's

    terminal?

    Repair the internal power supply.

    Refer to P. 7-2.

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    (2) [Battery empty]

    If using the external power supply of about 7.2V, the battery level display may blink. But it does not show a

    trouble. If you check the battery level with the external power supply, use 2~3 batteries of about 8.4V as

    standard. (The reference value of input voltage is different between the internal and external power supplies.)

    NO

    YES

    NO

    YES

    NO

    YES

    OK

    NO

    YES

    Is the error displayed?

    The above symptom has occurred.

    Is the terminalvoltage of the internalpower supply 7.2V?

    Recharge.

    Is the terminal voltage 7.2V?

    Is it connectedto the instrument's

    terminal?

    Connect it properly.Replace the CPU unit. Repair the internalpower supply.

    Refer to P. 7-2.

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    (3) Display is missing. Keys do not work. (Keys are not switched.)

    (4) Return signal level does not increase.

    The "C" mark does not move.

    The "C" mark stops midway.

    The "C" mark does not stop moving.

    The measurement value is not displayed. (Incorrect display)

    NO

    YES

    Display is missing.

    Replace the display unit cable.

    One side is missing.

    Replace the CPU unit.

    NO

    YES

    Replace the display unit.

    OK

    Refer to P. 7-2.

    NO

    YES

    The above symptom has occurred.

    Replace the AMP unit.

    After replacing theD-OSC unit, is it OK?

    Replace the EDM base unit.

    NO

    YES

    Do the chopperand circular wedgeoperate normally?

    OK

    Refer to P. 7-3.

    Refer to P. 7-3. Refer to P. 7-3.

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    (5) [TILT OVER]

    When the inclination is 3' or more against the horizontal position including the offset value of tilt sensor, this

    error is displayed. The tilt unit or angular measurement PCB unit may malfunction. But this error is

    sometimes canceled by adjusting the tilt offset or its installation position. Before replacing the unit, check ifadjustment is correct.

    NO

    YES

    The above symptom has occurred.

    Adjust the installationposture.

    Is the instrument leveled?

    Replace the tilt unit.

    Level the instrument and check it.

    NO

    YES

    Is the error displayed?

    NO

    YES

    Is the tiltunit installed and adjusted

    correctly?

    OK

    In the factory mode, input thetilt offset again.

    NO

    YES

    NO

    YES

    Replace the CPU unit.

    In the parameter setting mode1,set tilt correction to "OFF".

    Is the error displayed?

    Is the error displayed?

    Refer to P. 8-32.

    Refer to P. 8-10.

    Refer to P. 7-2. Refer to P. 7-2.Refer to P. 9-19.

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    (6) [V ANGLE ERROR]

    [H ANGLE ERROR] [E600/E700 range]

    [VH ANGLE ERROR]

    Check the displays of [ANGLE ERROR] in the factory mode. They are errors of the E600 and E700 range

    and, in the range, you can check the details. (*E600 shows that the gate array on the CPU unit is faulty.

    Replace the CPU unit.)

    In an error code of 3 digits (in the E600/E700 range), the right-end digit shows a trouble place. (Refer to the

    following example.)

    Example)

    E621: CCD integral time_Low error . . . . . . . .The trouble CCD is "1". H1

    E622: CCD integral time_Low error . . . . . . . .The trouble CCD is "2". H2

    E623: CCD integral time_Low error . . . . . . . .The trouble CCD is "3".

    V1

    After checking the 3-digit error display, carry out the following procedure. (For example, E622 is explained.)

    Example)

    1. In the factory mode, obtain and check the CCD set values. (If an abnormal value is input, input a normal

    value and make sure that the error is canceled.)

    2. Remove the cover and connect the tool to the CPU unit. Check the waveform of the CCD which is proba-

    bly a problem unit.

    3. By observing the waveform, judge that the problem unit is CCD unit, LED unit, Scale (soil or

    damage) or CPU unit. Replace (or clean) the unit.

    4. In the factory mode, input the set values again and check the operation.

    5. Perform inspection.

    The above symptom has occurred.

    In the factory mode, check the detailederror code (3 digits).

    Check the set values and waveform ofCCD. Then locate the problem unit.

    Replace the problem unit as referring tothe replacement procedure.

    Replace the CPU unit.

    E600 has occurred. *

    Refer to P. 8-13.

    ([F3] : CCD angle

    Refer to P. 6-15.

    Refer to P. 7-1.

    measurement mode)Refer to P. 7-2.

    1 2 3

    4

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    (7) [E35] is displayed.

    When the MEAS key is pressed in the REM mode while the lens barrel is within 6 from zenith or nadir, this

    error is displayed. When this error is displayed under this condition, it does not show a trouble. Be careful.

    NO

    YES

    The above symptom has occurred.

    Make measurement out of the rangeof 6 from zenith or nadir.

    Are youmaking measurement

    (horizontal distance or relativeheight) at the REM mode with V

    angle in the range of 6from zenith or

    nadir?

    Replace the CPU unit.

    NO

    YES

    Is adjustment ended

    normally?

    OK

    Adjust the vertical angle zero point.

    NO

    YES

    Is the error (E35) displayed?

    Go ahead to eachflow chart.

    (Another error is displayed.)

    Refer to P. 13-1.

    Refer to P. 7-2.

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    (8) [E61] is displayed.

    When any part on the D-OSC unit malfunctions, this error is displayed.

    (9) [E66] is displayed.

    When an abnormal value is input as the instrument constant (L1/L2/L3) in the factory mode, this error is

    displayed. Set the instrument constant again and check if the error disappears.

    The above symptom has occurred.

    Replace the D-OSC unit.

    Refer to P. 7-3.

    The above symptom has occurred.

    Replace the D-OSC unit. OK

    NO

    YES

    Is the error (E66) displayed?

    Set the instrument constants(L1/L2/L3) again.

    Refer to P. 7-3.

    Refer to P. 8-16.

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    (10) [E68] id displayed.

    When the chopper does not operate normally, this error is displayed.

    If the tool is connected and the chopper IN/OUT operation is normal, the signal sent from the D-OSC unit

    may be faulty. Replace the D-OSC unit.

    If the chopper does not operate normally, there is a problem around the chopper of the EDM base unit. If dust

    is accumulated and so the chopper is caught, remove dust and check the operation again. If the error is not

    canceled yet (that is, the chopper does not operate), the chopper malfunctions. Replace the EDM base unit.

    The above symptom has occurred.

    Replace the D-OSC unit. Replace EDM Base.

    NO

    YES

    Does the chopper motoroperate normally?

    Connect the tool and check theoperation of the chopper motor.

    Refer to P. 11-8.

    Refer to P. 7-3. Refer to P. 7-3.

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    (11) [E69] is displayed.

    This is a communication error between the EDM D-OSC unit and the standard CPU unit.

    The problem can occur in the PCBs and the signal route between the PCBs.

    As referring to the connection diagrams (P. 10-1 and P. 11-2), check contact or disconnection in the route,

    namely, cables, connectors, slip ring, brush, etc. If there is no problem, replace each PCB unit. (On the route,

    there is also EDM AMP unit. The problem can also be solved by replacing the AMP unit.)

    The above symptom has occurred.

    Repair the improper contactplace. (Replace.)

    OK

    NO

    YES

    Check the contact on the communicationroute visually and with a tester.

    Replace the CPU unit.

    NO

    YES

    Is the error displaycanceled?

    Replace the AMP unit.

    NO

    YES

    Replace the D-OSC unit.

    Is there an impropercontact place?

    Is the error displaycanceled?

    Refer to P. 7-2.

    Refer to P. 7-3.

    Refer to P. 7-3.

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    (13) [E81] is displayed.

    When you try to change the angle unit set in the instrument through the external device, this error occurs.

    Normally it does not occur but, because of the specification (software) of the external device, it can occur.

    Check the set unit in the instrument and the specification of the external device.

    Refer to the interface manual (option) for the communication between the external device and instrument.

    The above symptom has occurred.

    Replace the CPU unit.

    OK

    NO

    YES

    Is the error displayed?

    Fit the angle unit set in the instrumentto the unit on the external device.

    NO

    YES

    Performcommunication between

    the external device and instrumentagain. Is the error

    displayed?

    Check if there is a problem in the external

    communication device (especially, software).

    Refer to P. 7-2.

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    (14) [E82] is displayed.

    This is a communication error between the external communication device (PC, FC, etc.) and the instrument

    (excluding the file transmission). When repair is done for this error, also check the external communication

    device being used by the customer.

    Refer to the interface manual (option) for the communication between the external device and instrument.

    The above symptom has occurred.

    Replace the problem unit.

    NO

    YES

    Is there improper contact ordisconnection?

    Connect an external communication device made byTOPCON (FC, etc.) and check the communication(sending and receiving) toward the instrument. Select"ACK MODE: STANDARD" in the parameters of theinstrument.

    NO

    YES

    Is the error displayed?

    Check if there is improper contact or disconnectionin the signal route from the CPU unit to the externalcommunication device (communication cable/com-munication connector in the instrument/slip ring/brush, etc.).

    Replace the CPU unit. Repair the external communicationdevice (hardware or software).

    Refer to P. 8-34~36.

    Refer to P. 7-2.

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    (15) [E92] is displayed.

    When you try to input offset of 2' or more in tilt offset adjustment of factory mode, this error is displayed.

    Check the offset. If it is beyond 2', the tilt installation position is not correct. Adjust the tilt installation

    posture.

    (16) [E99] is displayed.

    When there is a trouble in the non-volatile memory on the CPU unit, this error is displayed. Execute ALL

    CLR in EEPROM INIT. of factory mode. If the error is not canceled yet, replace the CPU unit.

    * When ALL CLR is executed, the set values of the factory mode, parameter setting, normal mode and

    adjustment mode are lost.

    The above symptom has occurred.

    Press [F4] or [ENT] key todecide the tilt offset.

    NO

    YES

    Is the offset within 2' ?

    Level the instrument and check thetilt offset in the factory mode.

    Adjust the tilt installation posture.

    Refer to P. 8-10.

    Refer to P. 8-10. Refer to P. 9-19.

    The above symptom has occurred.

    Replace the CPU unit. OK

    NO

    YES

    Is the error displayed?

    Execute "ALL CLR" in "EEPROMINIT." of factory mode.

    Refer to P. 8-28.

    Refer to P. 7-2.

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    6-2 Trouble Shooting of Angular Measurement Problem Unit

    If the error code (Angle error) is displayed in the assembled product, there is a problem in the CCD unit, LED

    unit or scale.

    Each of angular measurement system units will be diagnosed as follows.

    Preparation In the factory mode, check if the PWM value and PAT value are within standard. If they are not so, it is

    necessary to diagnose the unit. (Refer to P. 9-4 for checking PWM/PAT in the factory mode.)

    Remove the left cover. Check the CCD signal waveforms on the angular measurement PCB. (Refer to P. 10-2 of 10-2 Angular

    Measurement Digital System Repairs.)

    When the PWM value is beyond standard

    The scale or CCD is soiled. Clean it. LED light intensity is faulty. The LED unit (in the horizontal side, angular measurement unit) may be

    faulty. Replace it.

    When the PAT value is beyond standard

    The clearance may be faulty between the scale and CCD. Replace the CCD unit (for the horizontalside, angular measurement unit).When waveform is not proper

    1) When the waveform is as Fig. 1

    If part of the signal pattern is missing, there may be dust on the CCD surface or scale surface. Blow

    dust with air or clean the surface.

    * If the problem is not solved, there may be damage on the CCD surface or scale surface. Replace the

    unit.

    1

    2

    3

    4

    The signal is missing because of dust.

    Fig. 1

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    2) When the waveform is as Fig. 2

    The LED unit may be faulty (unevenness of LED). Replace the LED unit on the V side and the angular

    measurement unit on the H side.

    3) When the waveform is as Fig. 3

    The LED unit may not be positioned correctly. Position the unit again.

    The following table shows the positions of Cursor 1 and Cursor 2.

    After diagnosing the units with the symptoms, replace the unit according to the replacement procedure of the

    problem unit (P. 9-7).

    Center value Cursor 1 Cursor 2V angular measurement 1056 615 s 1104 s

    H angular measurement

    976 550 1038

    1016 583 1071

    1056 615 1104

    1096 648 1136

    1136 680 1169

    B

    A

    GND

    Fig. 2

    It is NG when the difference is 0.6V ormore between the signal high pointand low point .

    A

    B

    BA

    Fig. 3Cursor 1 Cursor 2

    Incorrect position

    and are not uniform.A B

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    7. EACH UNIT REPLACEMENT PROCEDURE

    7-1 Angular Measurement System Unit Replacement Procedure

    After one unit is diagnosed with symptoms to have a problem, the unit will be replaced as follows.

    After assembly is completed, inspect the instrument.

    Replacement of (V) CCD unit and (V) angular measurement holder unit

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-15-2, 5-5).2) Replacement of unit

    Install the (V) CCD unit and (V) angular measurement holder unit as referring to "(V) angular mea-surement system unit installation and adjustment" (P. 9-14).

    3) How to adjust

    Carry out the positioning adjustment as referring to "(V) angular measurement system unit installa-tion and adjustment" (P. 9-149-18).

    After the positioning adjustment, record the center value.4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-5, 5-25-1).

    Replacement of (H) angular measurement unit

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-15-12). Before removing the tilt unit, record the tilt coefficients (K, A).

    2) Replacement of unit

    Replace the angular measurement unit as referring to "(H) angular measurement system unit installa-tion and adjustment" (P. 9-7).

    3) How to adjust

    Carry out the positioning adjustment as referring to "(H) angular measurement system unit installa-

    tion and adjustment" (P. 9-79-18). After the positioning adjustment, record the center value.

    4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-125-1).

    Replacement of vertical scale Ass'y

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-15-2, 5-5, 5-75-9).2) Replacement of part

    Install the vertical scale Ass'y as referring to "DISASSEMBLY PROCEDURE" (P. 5-95-7).* When installing, be careful about its direction. (Refer to P. 5-9.)

    * Clean the scale surface carefully before installing.3) How to adjust

    After installing the vertical scale Ass'y, carry out the CCD positioning adjustment as referring to "(V)angular measurement system unit installation and adjustment" (P. 9-149-18).

    After the positioning adjustment, record the center value.4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-5, 5-25-1).

    1

    2

    3

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    Replacement of vertical axis Ass'y

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-15-14). Before removing the tilt unit, record the tilt coefficients (K, A).

    2) Replacement of unit

    Replace the vertical axis Ass'y as referring to DISASSEMBLY PROCEDURE (P. 5-145-13).* When installing, be careful about its direction.

    * Clean the scale surface carefully before installing.

    3) How to adjust

    After replacing the vertical axis Ass'y, carry out the angular measurement unit positioning adjust-ment as referring to "(H) angular measurement system unit installation and adjustment" (P. 9-79-18).

    After the positioning adjustment, record the center value.4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-145-1).

    Replacement of CPU unit

    1) Preparation Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-15-2). Before disassembly, record the following data.

    Tilt coefficient........................... K, A

    H1 angular measurement unit ... Center value and integral time

    H2 angular measurement unit ... Center value and integral time

    V CCD unit ............................... Center value and integral time

    2) Replacement of unit

    Replace the CPU unit and connect the cables.3) How to adjust

    Set a variety of information as referring to "10-2 Angular Measurement Digital System Repairs"(P. 10-210-3).

    4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-25-1). Perform "10-3 Setting of Integral time" (P. 10-4).

    Replacement of tilt unit

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-15-5).2) Replacement of unit

    Replace the tilt unit.* The washers are set at the end faces of the tilt unit and standard. Be careful.

    3) How to adjust

    Perform the tilt positioning adjustment, tilt coefficient input and tilt offset input as referring to "9-2-3Tilt unit installation adjustment" (P. 9-19).

    4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-55-1).

    4

    5

    6

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    7-2 EDM System Unit Replacement Procedure

    Replacement of EDM base unit

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-155-22, 5-26). When

    the optical receiving/emitting fibers are replaced, adjust the EDM base unit optical receiving/emit-ting focus position as referring to "11-7 Telemeter Optical Axis and EDM Optical Axis Adjustment"

    (P. 11-1011-12).2) Replacement of unit

    Replace the EDM base unit and connect the cable.3) How to adjust

    Perform adjustment and input according to the flow chart (P. 11-1) of "11-1 Telescope (EDM) Sys-tem Repairs".

    4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-26, 5-225-11).

    Replacement of EDM D-OSC unit

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-155-16).2) Replacement of unit

    Replace the D-OSC unit and connect the cable.3) How to adjust

    Perform adjustment and input according to the flow chart (P. 11-1) of "11-1 Telescope (EDM) Sys-tem Repairs".

    4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-165-15).

    Replacement of EDM AMP unit1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-155-18).2) Replacement of unit

    Replace the AMP unit and connect the cable.3) How to adjust

    Perform adjustment and input according to the flow chart (P. 11-1) of "11-1 Telescope (EDM) Sys-tem Repairs".

    4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-185-15).

    1

    2

    3

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    7-3 Other Units Replacement Procedure

    Replacement of optical plummet telescope

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-3, 5-4).

    2) Replacement of unit Replace the optical plummet telescope. When installing, be careful about the places where the V

    screw and U screw should be used.

    3) How to adjust

    Align the vertical axis with the line of sight of the optical plummet telescope as referring to"APPENDIX 1-1 Theodolite System Accuracy Inspection " (P. APPENDIX-2).

    4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-4, 5-3).

    Replacement of V tangent unit

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-35-6).2) Replacement of unit Replace the tangent unit. When installing, make sure that the tangent unit is fit to the clamp securely.

    3) How to adjust

    As tightening the tangent unit clamp fully, fix the tangent unit with a set screw.4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-6, 5-3).

    Replacement of H tangent unit

    1) Preparation

    Perform disassembly as referring to "DISASSEMBLY PROCEDURE" (P. 5-3, 5-4, 5-10).2) Replacement of unit

    Replace the tangent unit. When installing, make sure that the tangent unit is fit to the clamp securely.3) How to adjust

    As tightening the tangent unit clamp fully, fix the tangent unit with two set screws.4) Assembly

    Perform assembly in the reversed procedure of "DISASSEMBLY PROCEDURE" (P. 5-10, 5-4, 5-3).

    1

    2

    3

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    8. REPAIR OUTLINE

    8-1 Repair Outline

    Repair the GTS-100N series by replacing the faulty unit. Check the symptom by the trouble shooting, error

    codes and operation/function inspection and then replace the faulty unit according to the flow chart. After

    replacing, make sure that the trouble has been solved. In addition, perform the operation inspection and thetheodolite system/EDM system accuracy inspection to make sure that the product function of the GTS-100N

    series is satisfactory.

    Flow of repair

    * This procedure cannot be performed depending on the details of the trouble.

    Important:For the CPU unit which is a service part, the factory mode and parameters are not set. Afterreplacing the CPU unit, set the factory mode and parameters.

    Replace the unit according to the flow chart.

    Make sure that the trouble has been solved.

    Upload of the softwares

    Setting of factory mode

    Setting of parameters

    Operation and function inspection

    Theodolite system/EDM system accuracy inspection

    Check the details of trouble.

    End

    P. 6-1 ~ P. 6-14

    P. 12-1 ~ P. 12-21

    P. 8-3 ~ P. 8-29

    P. 8-30 ~ P. 8-37

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    8-2-2 Start/end of factory mode

    Start of factory mode

    ProcedureKey

    OperationDisplay Remarks

    1 Set the constant-voltage power sup-

    ply to 8.50.1V.

    2 Connect the instrument to the con-

    stant-voltage power supply (ST-PS-

    01) with the power cable (ST-PK-02)

    and tool power supply (ST-DA-34).

    3 As pressing the [F2] and [ANG]

    keys, press the [POWER] key. The

    factory mode is accessed.

    * On this display, you can input S/N.

    4 Press the [F4] (ENTER) key. The

    factory mode menu is displayed.

    The pages of the factory mode menu

    is changed in the normal order by the

    [F4] key or the [ ] (ANG) key.

    1/6 2/6 3/6 4/6 5/6 6/6

    The pages are changed in the

    reversed order by the [ ] (distance

    measurement) key.

    1/6 6/6 5/6 4/6 3/6 2/6

    1

    [F2] + [ANG]+

    [POWER]

    LCD CONT S.N.:123456 S.N. ENTER

    [F4] FACTORY MODE [1/6] 1:V ANGLE 0 OFFSET 2:TILT K,A 3:TILT OFFSET

    FACTORY MODE [1/6] 1:V ANGLE 0 OFFSET 2:TILT K,A 3:TILT OFFSET

    FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:TILT K,A 3:TILT OFFSET

    FACTORY MODE [3/6] 1:EDM VERSION 2:TILT K,A 3:TILT OFFSET

    FACTORY MODE [4/6] 1:LOCKS 2:TILT K,A 3:TILT OFFSET

    FACTORY MODE [5/6] 1:EDM PROG. LOAD 2:TILT K,A 3:TILT OFFSET

    FACTORY MODE [6/6] 1:A/D CVT DATA 2:SPECIAL SELECT 3:ANG CHECK MODE

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    End of factory mode

    ProcedureKey

    OperationDisplay Remarks

    1 Press the [POWER] key in the fac-

    tory mode. The mode finish check

    display appears.

    2 Press the [F3] (YES) key. The power

    of the instrument is turned off.

    3 Remove the power cable from theinstrument.

    2

    [POWER] FACTORY MODE [1/6]

    POWER OFF? [YES] [NO]

    [F3]

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    8-2-3 Factory mode

    1. S/N

    ProcedureKey

    OperationDisplay Remarks

    1 As pressing the [F2] and [ANG]

    keys, press the [POWER] key. The

    factory mode is accessed.

    2 Press the [F3] (S. N) key. The S/N

    setting display appears.

    3 Change the numerical value/alphabet

    input with the [F1] key and input S/N

    with the ten keys.

    [F1] (ALP) :

    Changes the ten keys to the

    alphabet input.

    [F1] (NUM) :

    Changes the ten keys to thenumerical value input.

    [F2] (SPC) :

    Inputs a space.

    [F3] (CRL) :

    Clears all the inputted characters.

    [F4] (ENT) :

    Sets S/N and returns to the fac-

    tory mode.

    Ten keys:

    In the numerical value input

    mode, you can input the selectednumerical value. In the alphabet

    input mode, you can display the

    selected alphabet letter. By press-

    ing the same key again, the next

    candidate letter is displayed.

    [F2] + [ANG]+

    [POWER]

    LCD CONT S.N.:123456 S.N. ENTER

    [F3] LCD CONT S.N.=[ALP][SPC][CLR][ENT]

    [F4] LCD CONT S.N.=[ALP][SPC][CLR][ENT]

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    ProcedureKey

    OperationDisplay Remarks

    10 Press the [1], [0] and [2] keys in this

    order.

    11 Press the [F4] (ENT) key. S/N is set

    and the factory mode display appears

    again.

    [1] [0] [2] LCD CONT

    S.N.=GTS102[ALP][SPC][CLR][ENT]

    [F4] LCD CONT S.N.:GTS102 S.N. ENTER

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    2. V ANGLE 0 OFFSET

    ProcedureKey

    OperationDisplay Remarks

    1 Level the instrument and collimate

    horizontality.

    2 Press the [F1] (1: V ANGLE 0 OFF-

    SET) key on "FACTORY MODE [1/

    6]". The [V ANGLE 0 OFFSET] set-

    ting display appears.

    V:

    The V value after

    correction

    V0:

    The V value before

    correction

    OFS:Correction value

    3 Press the [F4] (ENTER) key. The V

    angle zero position is set and "FAC-

    TORY MODE [1/6]" appears again.

    [F1] V : 9000'05"0 V0: 9000'05"0OFS: 000'00"0 --- --- --- ENTER

    [F4] V : 9000'05"0 V0: 9000'05"0OFS: 000'00"0 --- --- --- ENTER

    FACTORY MODE [1/6] 1:V ANGLE 0 OFFSET 2:TILT K,A

    3:TILT OFFSET

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    3. TILT K, A

    ProcedureKey

    OperationDisplay Remarks

    1 Press the [F2] (2: TILT K, A) key on

    "FACTORY MODE [1/6]". The

    [TILT K, A] (VERTICAL) settingdisplay appears.

    2 Move the cursor with the [] or []key and set the "K" value with the

    [ ] or [ ] key.

    : Moves the cursor leftward. : Moves the cursor rightward.

    : Increases the value on the cursor

    by 1. (0 ~ F)

    : Decreases the value on the cursor

    by 1. (0 ~ F)

    K:

    Tilt coefficient

    A:

    Temperature correc-

    tion value

    3 Press the [F4] (ENTER) key. The

    "K" value is set and the instrument

    shifts to the "A" value input proce-

    dure.

    [F2] TILT VERTICAL [1/2] K = 000000

    A : 000000CLEAR --- --- ENTER

    TILT VERTICAL [1/2] K = 000000 A : 000000CLEAR --- --- ENTER

    [F4] TILT VERTICAL [1/2] K : 000000 A = 000000CLEAR --- --- ENTER

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    4. TILT OFFSET

    ProcedureKey

    OperationDisplay Remarks

    1 Level the instrument.

    2 Press the [F3] (3: TILT OFFSET) key

    on "FACTORY MODE [1/6]". The

    [TILT X OFFSET] setting display

    appears.

    TILT:

    Tilt sensor value

    after correction

    tilt:

    Tilt sensor value

    before correction

    3 Press the [F4] (ENTER) key. Theoffset of [TILT] is set and "FAC-

    TORY MODE [1/6]" appears again.

    [F3] X(VERTICAL) TILT: 000'00" tilt: 000'00" --- --- --- ENTER

    [F4] FACTORY MODE [1/6] 1:V ANGLE 0 OFFSET 2:TILT K,A 3:TILT OFFSET

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    5. CCD CENTER/PWM

    ProcedureKey

    OperationDisplay Remarks

    1 Press the [F1] (1: CCD CENTER/

    PWM) key on "FACTORY MODE

    [2/6]". The [CCD CENTER/PWM](H1) setting display appears.

    CENTER:

    Center value of

    CCD

    CHARGE:

    The LED light emit-

    ting time against

    CCD (Integral time)

    2 Press the [F1] (INPUT) key. The cur-

    sor is displayed. You can input a

    value with keys.

    3 Input the [H1 CENTER] value (writ-

    ten on the CCD unit seal) with the ten

    keys.

    4 Press the [F4] (ENT) key. The CEN-

    TER value is set and the target shifts

    to "CHARGE".

    5 Press the [F1] (INPUT) key. The cur-

    sor is displayed. You can input a

    value with keys.

    [F1] H1 CENTER->1000CHARGE :05

    INPUT --- SKIP ENTER

    [F1] H1 CENTER=CHARGE :05

    [---][---][CLR][ENT]

    [Ten keys] H1 CENTER=1016CHARGE :05

    [---][---][CLR][ENT]

    [F4] H1 CENTER:1016CHARGE ->05

    INPUT --- SKIP ENTER

    [F1] H1 CENTER:1016CHARGE =

    [---][---][CLR][ENT]

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    ProcedureKey

    OperationDisplay Remarks

    6 Input the [H1 CHARGE] value (05)

    with the ten keys.

    7 Press the [F4] (ENT) key. The

    CHARGE value is set and the PWM

    and PAT values are displayed.

    PWM:

    Light intensity emit-

    ted toward CCD by

    LED

    PAT:

    Total of the scale

    patterns R, A, B and

    C within the CCD

    read width

    8 Make sure that the PWM and PAT

    values are within standard (refer to

    the table below) and press the [F3]

    (YES) key. The PWM and PAT val-

    ues are set and the [CCD CENTER/

    PWM] (H2) display appears.

    9 For H2 and V1 input the CENTERand CHARGE values and set the

    PWM and PAT values in the same

    way (Procedure 2 ~ 8).

    10 Perform Procedure 1~9 again.

    [Ten keys] H1 CENTER:1016CHARGE =05

    [---][---][CLR][ENT]

    [F4] H1 CENTER:1016CHARGE :05PWM:035 PAT:18.4 >OK [YES][NO]

    [F3] H2 CENTER->1056CHARGE :05

    INPUT --- SKIP ENTER

    CHARGE PWM PAT

    H1 5 10~65 17.7~19.3

    H2 5 10~65 17.7~19.3

    V1 5 10~65 17.7~19.3

    Standard

    FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE

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    6. CCD REPEAT

    ProcedureKey

    OperationDisplay Remarks

    * This mode is used for trouble

    shooting.

    1 Press the [F2] (2: CCD REPEAT) key

    on "FACTORY MODE [2/6]" (for

    checking the CCD waveforms). The

    CHARGE and PWM values of the

    CCD are displayed.

    2 Change the unit with the [F1] ~ [F3]

    keys and check the CHARGE andPWM values and waveforms.

    [F1] key: CHARGE and PWM val-

    ues of H1

    [F2] key: CHARGE and PWM val-

    ues of H2

    [F3] key: CHARGE and PWM value

    of V1

    3 Press the [ESC] key. "FACTORY

    MODE [2/6]" appears again.

    [F2] H1 CHARGE:00PWM :45

    H1 H2 V1 ---

    H2 CHARGE:00

    PWM :45

    H1 H2 V1 ---

    [ESC]FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE

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    7. CCD PHASE

    ProcedureKey

    OperationDisplay Remarks

    * This mode is used for trouble

    shooting.

    1 Press the [F3] (3: CCD PHASE) key

    on "FACTORY MODE [2/6]". The

    CHARGE and PWM values of the

    CCD are displayed.

    2 Change the unit with the [F1] ~ [F3]

    keys and check the CHARGE andPWM values and waveforms.

    [F1] key: The pattern quantity,

    CHARGE value and read

    angle of H1

    [F2] key: The pattern quantity,

    CHARGE value and read

    angle of H2

    [F3] key: The pattern quantity,

    CHARGE value and read

    angle of V1

    3 Press the [ESC] key. "FACTORY

    MODE [2/6]" appears again.

    [F3] H1 PHASE:A:8 b:9 c:9 CHRG:05 15620'41" H1 H2 V1 ---

    V1 PHASE:

    A:8 b:9 c:7 CHRG:05 238'17" H1 H2 V1 ---

    [ESC] FACTORY MODE [2/6] 1:CCD CENTER/PWM 2:CCD REPEAT 3:CCD PHASE

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    8. EDM VERSION

    ProcedureKey

    OperationDisplay Remarks

    * This mode is used for trouble

    shooting.

    1 Press the [F1] (1: EDM VERSION)

    key on "FACTORY MODE [3/6]".

    The EDM software version is dis-

    played for a few seconds. Then,

    "FACTORY MODE [3/6]" appears

    again.

    [F1]

    [ Ver. 2.01 ]

    FACTORY MODE [3/6] 1:EDM VERSION 2:EDM OFFSET

    3:EDM COUNT DATA

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    10. EDM OFFSET S

    ProcedureKey

    OperationDisplay Remarks

    1 Press the [F2] (2: EDM OFFSET)

    key on "FACTORY MODE [3/6]".

    The [EDM OFFSET] menu appears.

    2 Press the [F2] (2: EDM OFFSET)

    key. The current [EDM OFFSET (S)]

    value is displayed.

    3 Move the cursor with the [] or []key and set the OFFSET value with

    the [ ] or [ ] key.

    : Moves the cursor leftward. : Moves the cursor rightward.

    : Changes "+" and "-" to each

    other and increases the value on

    the cursor by 1. (0 ~ 9)

    : Changes "+" and "-" to eachother and decreases the value on

    the cursor by 1. (0 ~ 9)

    4 Press the [F4] (ENTER) key. The

    OFFSET value is set. "FACTORY

    MODE [3/6]" appears again.

    Press the [ESC] key. "FACTORY

    MODE [3/6]" appears again.

    [F2] EDM-OFFSET 1:L1/L2/L3 OFFSET

    2:EDM OFFSET

    [F2] EDM OFFSET

    +20.6mmCLEAR --- --- ENTER

    EDM OFFSET

    +19.2mmCLEAR --- --- ENTER

    [F4]

    [ESC]

    DATA CHECKING NOW

    EDM OFFSET 1:L1/L2/L3 OFFSET 2:EDM OFFSET

    FACTORY MODE [3/6] 1:EDM VERSION 2:EDM OFFSET 3:EDM COUNT DATA

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    11. EDM COUNT

    ProcedureKey

    OperationDisplay Remarks

    * This mode is used for trouble

    shooting.

    1 Press the [F3] (3: EDM COUNT

    DATA) key on "FACTORY MODE

    [3/6]". The [EDM COUNT DATA]

    menu appears.

    2 Press the [F1] (1: EDM COUNT)

    key. The EDM COUNT check dis-

    play appears.

    3 Set a prism in front of the objective

    lens.

    4 Select a measurement mode with the

    [F1] ~ [F4] keys. The count value is

    displayed in the selected measure-ment mode.

    5 Press the [ESC] key. The [EDM

    COUNT DATA] menu appears again.

    6 Press the [ESC] key. "FACTORY

    MODE [3/6]" appears again.

    [F3] EDM COUNT DATA [1/2] 1:EDM COUNT 2:EDM DATA CHECK 3:EDM SA CHECK

    [F1] EDM-COUNT L3: L2:

    L1: S :FINE CRS TRK A.H

    EDM-COUNT FINE L3:0000 L2:0001

    L1:99991 S :03040FINE CRS TRK A.H

    [ESC] EDM COUNT DATA [1/2] 1:EDM COUNT 2:EDM DATA CHECK 3:EDM SA CHECK

    [ESC] FACTORY MODE [3/6] 1:EDM VERSION 2:EDM OFFSET 3:EDM COUNT DATA

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    12. EDM DATA CHECK

    ProcedureKey

    OperationDisplay Remarks

    * This mode is used for trouble

    shooting.

    1 Press the [F3] (3: EDM COUNT

    DATA) key on "FACTORY MODE

    [3/6]". The [EDM COUNT DATA]

    menu appears.

    2 Press the [F2] (2: EDM DATA

    CHECK) key. The EDM DATA

    check display appears.

    KS:A digit is miss-

    ing. (S)

    KL:A digit is miss-ing. (L)

    RS: Spare (Unused)

    RL:Spare (Unused)

    SB: Deviation (S)

    LB:Deviation (L)

    BF: Comparison

    with the last

    value

    3 Set a prism in front o