SERVICE MANUAL - Freej.mdownload1.free.fr/Schemas/JVC/AV-32H20EUS_AV-28H20EUx...The high voltage...

No.51945

AV32H20EUSAV28H20EUSAV28H20EUB

1 COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.

May 2002


CONTENTS! SPECIFICATIONS ････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 2

! SAFETY PRECAUTIONS ････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 4

! FEATURES････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 5

! MAIN DIFFERENCE LIST ････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 5

! SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 6

! SERVICE ADJUSTMENTS ････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 12

! PARTS LIST ････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 31

★ OPERATING INSTRUCTIONS

★ STANDARD CIRCUIT DIAGRAM ････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････････ 2-1

SERVICE MANUALCOLOUR TELEVISION

BASIC CHASSIS

MFⅡⅡⅡⅡ

No.51945


2

SPECIFICATIONSContent

ItemAV32H20EUS AV28H20EUS / AV28H20EUB

Dimensions ( W××××H××××D ) 855mm×550mm×568mm 780mm×509mm×499mmMass 53.6kg 40.2kg

TV RF System CCIR (B/G,D/K,I ,L, L)

Colour System PAL / SECAM / NTSC (Only in EXT mode)

Stereo System A2 (B/G,D/K)/ NICAM (B/G,I,D/K,L)

Teletext System FLOF (Fastext)TOP (German system)WST(W orld Standard system)

Receiving FrequencyVHF 47MHz ～ 470MHz

UHF 470MHz ～ 862MHz

French CAT V 116MHz ～ 172MHz / 220MHz ～ 469MHz

Intermediate FrequencyVIF Carrier 38.9MHz (B/G, I ,L)/ 33.95MHz (L)

SIF Carrier 33.4MHz (5.5MHz:B/G) / 32.9MHz (6.0MHz:I) / 32.4MHz (6.5MHz:L, D/K) / 40.45MHz (6.5MHz:L)

Colour Sub Carr ier Freq.PAL 4.43MHz

SECAM 4.40625MHz/4.25MHz

NT SC 3.58MHz / 4.43MHz

Power Input 220 240 V AC, 50Hz 220 240 V AC, 50HzPower Consumption 187W(Max) / 138W(Avg), standby : 2.6W 178W(Max) / 125W(Avg), standby : 2.6W

Aerial Input Term 75Ωunbalanced, Coaxial

Picture Tube Visible size : 76cm, Measured diagonally Visible size : 66cm, Measured diagonally

High Voltage 31.0kV (at zero beam current)

Speaker (16cm×4cm) oval type ×2

Au dio Output 7.5W + 7.5W

EXT-1/EXT-2/EXT-3(Input / Output)

21-pin Euro connector(SCART socket)

S / Video Y : 1Vp-p POSITIVE (Negative sync Provided, when terminated with 75Ω)

C : 0.3Vp-p (Burst signal, when terminated with 75Ω)

EXT-4 (Input) Video

Au dio (L/R) S / Video

1Vp-p 75Ω(RCA pin jack)

500mVrms( -4dBs ), High Impedance ( RCA pin jack )Y : 1Vp-p POSITIVE (Negative sync Provided, when terminated with 75Ω)

C : 0.3Vp-p (Burst signal, when terminated with 75Ω)

AUDIO OUT (Variable) 0～1Vrms, Low Impedance(RCA pin jack×2)

Headphone jack Stereo mini jack (φ3.5mm )

Remote Control Unit RM-C54H (AAA/R03 dry battery×2) : (AV32H20EUS, AV28H20EUS)RM-C50(AAA/R03 dry battery×2) : (AV28H20EUB)

Design & specifications are subject to change without notice.

+1kV-1. 5kV

No.51945


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■■■■21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3

(P-P= Peak to Peak, B-W= Blanking to white peak)

Pin

No .Signal Designation Matching Value EXT-1 EXT-2 EXT-3

1 AUDIO R output 500mVrms(Nominal),

Low impedance○

(TV OUT)

○

(LINE OUT)NC

2 AUDIO R input 500mVrms(Nominal),High impedance

○ ○ ○

3 AUDIO L output 500mVrms(Nominal),

Low impedance○

(TV OUT)

○

(LINE OUT)NC

4 AUDIO GND ○ ○ ○

5 GND (B) ○ ○ ○

6 AUDIO L input 500mVrms(Nominal),

High impedance○ ○ ○

7 B input 700mVB-W, 75Ω ○ ○ NC

8 FUNCTION SW

(SLOW SW)

Low : 0-3V, High : 8-12V, Highimpedance

○ ○ ○

9 GND (G) ○ ○ ○

10 SCL3 NC ○ NC

11 G input 700mVB-W, 75Ω ○ ○ NC

12 SDA3 NC ○ NC

13 GND (R) ○ ○ ○

14 GND (YS) ○ NC NC

15 R / C input R : 700mVB-W , 75Ω

C : 300mVP-P, 75Ω

○

(only R)○

○

(only C)

16 Ys input Low : 0 - 0.4, High : 1 - 3V, 75Ω ○ NC NC

17 GND(VIDEO output) ○ ○ ○

18 GND(VIDEO input) ○ ○ ○

19 VIDEO output 1VP-P(Negative going sync), 75Ω ○

(TV)

○

(LINE OUT)NC

20 VIDEO / Y input 1VP-P(Negative going sync), 75Ω ○ ○ ○

21 COMMON GND ○ ○ ○

[Pin assignment]

No.51945


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SAFETY PRECAUTIONS1. The design of this product contains special hardware, many

circuits and components specially for safety purposes. Forcontinued protection, no changes should be made to the originaldesign unless authorized in writing by the manufacturer.Replacement parts must be ident ical to those used in the originalcircuits. Service should be performed by qualif ied personnelonly.

2. Alterations of the design or circuitry of the products should not be

made. Any design alterat ions or additions will void themanufacturer's warranty and will further relieve the manufacturerof responsibility for personal injury or property damage result ingtherefrom.

3. Many electrical and mechanical parts in the products have

special safety-related characteristics. T hese characteristics areoften not evident f rom visual inspection nor can the protect ionafforded by them necessarily be obtained by using replacementcomponents rated for higher voltage, wattage, etc. Replacementparts which have these special safety characterist ics areidentified in the parts list of Service manual. Electricalcomponents having su ch features are identified by shadingon the schematics and by (!!!! ) on the parts list in Servicemanual. The use of a substitute replacement which does nothave the same safety characterist ics as the recommendedreplacement part shown in the parts list of Service manual maycause shock, fire, or other hazards .

4. Do n't short between the LIVE side ground and ISOL ATED

(NEUTRAL) side ground or EARTH side ground whenrepairing.Some model's power circuit is partly different in the GND. Thedifference of the GND is shown by the LIVE : (") side GND, theISOLATED(NEUTRAL) : (#) side GND and EARTH : ($) sideGND. Don't short between the LIVE side GND andISOLATED(NEUTRAL) side GND or EARTH side GND andnever measure with a measuring apparatus (oscilloscope etc.)the LIVE side GND and ISOLATED(NEUTRAL) side GND orEARTH side GND at the same time.If above note will not be kept, a fuse or any parts will be broken.

5. If any repair has been made to the chassis, it is recommended

that the B1 setting should be checked or adjusted (SeeADJUSTMENT OF B1 POWER SUPPLY).

6. The high voltage applied to the picture tube must conform with

that specified in Service manual. Excessive high voltage cancause an increase in X-Ray emission, arcing and possiblecomponent damage, therefore operation under excessive highvoltage conditions should be kept to a minimum, or should beprevented. If severe arc ing occurs, remove the AC powerimmediately and determine the cause by visual inspect ion(incorrect installat ion, cracked or melted high voltage harness,poor soldering, etc.). To maintain the proper minimum level ofsoft X-Ray emission, components in the high voltage circuitryincluding the picture tube must be the exact replacements oralternat ives approved by the manufacturer of the completeproduct.

7. Do not check high voltage by drawing an arc. Use a high voltage

meter or a high voltage probe with a VTVM. Discharge thepicture tube before attempting meter connection, by connect inga clip lead to the ground frame and connecting the other end ofthe lead through a 10kΩ 2W resistor to the anode button.

8. When service is required, observe the original lead dress. Extra

precaut ion should be given to assure correct lead dress in thehigh voltage circuit area. W here a short circuit has occurred,those components that indicate evidence of overheating shouldbe replaced. Always use the manufacturer's replacementcomponents.

9. Isolation Check(Safety for Electrical Shock Hazard)After re-assembling the product, always perform an isolat ioncheck on the exposed metal parts of the cabinet (antennaterminals, video/audio input and output terminals, Control knobs,metal cabinet, screwheads, earphone jack, control shafts, etc.)to be sure the product is safe to operate without danger ofelectrical shock.

(1) Dielectric Strength TestThe isolation between the AC primary circuit and all metal partsexposed to the user, particularly any exposed metal part having areturn path to the chass is should withs tand a voltage of 3000VAC (r.m.s.) for a period of one second.(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliancerated up to 120V, and 3000V AC (r.m.s.) to an appliance rated200V or more, for a period of one second.)This method of test requires a test equipment not generally foundin the service trade.

(2) Leakage Current CheckPlug the AC line cord direct ly into the AC outlet (do not use a lineisolation transformer during this check.). Using a " LeakageCurrent Tester", measure the leakage current f rom each exposedmetal part of the cabinet, part icularly any exposed metal parthaving a return path to the chassis , to a known good earthground (water pipe, etc.). Any leakage current must not exceed0.5mA AC (r.m.s.).However, in tropical area, this must not exceed 0.2mA AC(r.m.s.)."""" Alternate Check MethodPlug the AC line cord direct ly into the AC outlet (do not use a lineisolation transformer during this check.). Use an AC voltmeterhaving 1000 ohms per volt or more sens it ivity in the followingmanner. Connec t a 1500Ω 10W res istor paralleled by a 0.15µFAC-type capacitor between an exposed metal part and a knowngood earth ground (water pipe, etc.). Measure the AC voltageacross the res istor with the AC voltmeter. Move the resistorconnec tion to each exposed metal part, part icularly any exposedmetal part having a return path to the chassis, and measure theAC voltage ac ross the res istor. Now, reverse the plug in the ACoutlet and repeat each measurement. Any voltage measuredmust not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mAAC (r.m.s.).However, in tropical area, this must not exceed 0.3V AC ( r.m.s.).This corresponds to 0.2mA AC (r.m.s.).

0.15μF AC-TYPE

1500 Ω 10W

GOOD EARTH GROUND

PLACE THIS PROBEON EACH EXPOSEDMETAL PART

AC VOLTMETER(HAVING 1000 Ω /V,OR MORE SENSITIVITY)

No.51945


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FEATURES" New chassis design enable use of an interac tive on screen

control." The TELETEXT SYSTEM has a built-in FASTEXT (UK system),

TOP (German system) and W ST (world standard system)system.

" Because this TV unit corresponds to multiplex broadcast, userscan enjoy music programs and sporting events with live realism.

In addition, BILINGUAL programs can be heard in their originallanguage.

" Users can make VCR dubbing of picture and sound by controllingthe AV selec tor to select an optional source at the EXT-2 output

shown in figure.

MAIN DIFFERENCE LIST!

Model Name

Part NameAV32H20EUS AV28H20EUS AV28H20EUB

MAIN PWB ASSY SMF-1401A-U2 SMF-1402A-U2

POWER & DEF PWB ASSY SMF-2401A-U2 SMF-2402A-U2

CRT SOCKET PWB ASSY SMF-3401A-U2 SMF-3402A-U2

FRONT CONTROL PWB ASSY SMF-8401A-U2 SMF-8402A-U2

! FRONT CABINET ASSY LC10376-020A-U LC10662-023A-U LC10662-024A-U

! DOOR LC20265-017A-U LC20265-024A-U

! POWER KNOB LC30578-007B-U LC30578-004A-U

! REAR COVER LC10378-004B-U LC10664-003B-U LC10664-001E-U

JVC MARK LC40354-003A-C LC40354-001C-C

! RATING LABEL LC20379-027A-U LC20379-026A-U LC20379-025A-U

EURO LABEL AEM1052-063-E AEM1052-064-E AEM1052-096-E

REMOTE CONTROL UNIT RM-C54H-1C RM-C50-1C

TV EXT-1 EXT-3

EXT-2

EXT-4

No.51945


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SPECIFIC SERVICE INSTRUCTIONSDISASSEMBLY PROCEDURE

REMOVING THE REAR COVER1. Unplug the power cord.

2. Remove the 12 (28 models), 13 (32 model) screws marked A

as shown in the Fig. 1.3. Withdraw the rear cover toward you.

REMOVING THE CHASSIS" After removing the rear cover.1. Slight ly raise the both sides of the chassis by hand and remove

the two claws under the both sides of the chassis from the frontcabinet.

2. Withdraw the chass is backward.(If necessary, take off the wire clamp, connectors etc.)

REMOVING THE SPEAKER" After removing the rear cover.1. Remove the 2 screws marked B, and remove the speaker holder

as shown in Fig. 1.NOTE : When removing the screws marked B of the speaker

remove the lower side screw first, and then remove theupper one.

2. Remove the 2 screws C attaching the speaker.3. Follow the same steps when removing the other hand speaker.

REMOVING THE AV TERMINAL BOARD" After removing the rear cover.

1. Remove the 3 screws marked D as shown in the Fig. 1.2. Remove the 2 claws marked E under the CHASSIS as shown in

Fig. 2.3. Remove the AV TERMINAL BOARD slightly in the direction of

arrow F as shown in Fig. 2.

REMOVING THE POWER & DEF PWB" After removing the rear cover." After removing the rear CHASSIS.

1. Remove the 3 screws marked G . 2. Remove the POWER & DEF PWB.

CHECKING THE PW BOARDTo check the back side of the PW Board.

1) Pull out the chassis . (Refer to REMOVING THE CHASSIS).

2) Erect the chassis vertically so that you can easily check theback side of the PW Board.

[CAUTION]" When erec ting the chassis, be careful so that there will be no

contact ing with other PW Board." Before turning on power, make sure that the wire connector is

properly connec ted." When conducting a check with power supplied, be sure to confirm

that the CRT EARTH WIRE (BRAIDED ASSY) is connected to

the CRT SOCKET PW board.

WIRE CLAMPING AND CABLE TYING 1. Be sure to clamp the wire.

2. Never remove the cable tie used for tying the wires together.Should it be inadvertent ly removed, be sure to tie the wires with

a new cable tie.

AV SW PWB

E

Fig. 2

AV TERMINALBOARD

E

No.51945


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Fig. 1

REAR COVER

FRONT CABINET

SPEAKER

CRTSOCKETPWB

FRONTCONT ROLPWB(1/2)

MAINPWB

POWER & DEF.PWB

CLAW

CLAW

CHASSIS

AV TERMINALBOARD

B

POWER CORD

C(×2)

A(×13 : 32 model)

D

(×3)

(×2)

FRONTCONT ROLPWB(2/2)

AV SWPWB

This exploded view describes about

AV28H20EUS / AV28H20EUB.Although AV32H20EUS are slight ly

different from this f igure, you can usethe exploded view for disassembling

the AV32H20EUS in same step asAV28H20EUS / AV28H20EUB.

(×12 : 28 models)

G(×3)

MICOM PWB

100Hz PWB

No. 51945


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REMOVING THE CRT

∗ Replacement of the CRT should be performed by 2 or morepersons.

• After removing the cover, chassis etc.,1. Putting the CRT change table on soft cloth, the CRT change table

should also be covered with such soft cloth (shown in Fig.3).

2. While keeping the surface of CRT down, mount the TV set on theCRT change table balanced will as shown in Fig.4.

3. Remove 4 sc rews marked by arrows with a box type screw driveras shown in Fig.4.

• Since the cabinet will drop when screws have been removed, besure to support the cabinet with hands.

4. After 4 screws have been removed, put the cabinet slowly oncloth (At this time, be carefully so as not to damage the front

surface of the cabinet) shown in Fig.5.

• The CRT should be assembled according to the oppositesequence of its dismounting steps.

∗ The CRT change table should preferably be smaller that the CRTsurface, and its height be about 35cm.

CRT CHANGE TABLE

CLOTH

APPROX.35cm

CRT

CRTCHANGETABLE

BOXTYPESCREWDRIVER

Fig. 3

Fig. 5

CRT

CABINET CRTCHANGE TABLE

Fig. 4

No.51945


9

REPLACEMENT OF CHIP COMPONENT! CAUTIONS

1. Avoid heat ing for more than 3 seconds.

2. Do not rub the electrodes and the resist parts of the pattern.3. When removing a chip part, melt the solder adequately.4. Do not reuse a chip part after removing it .

! SOLDERING IRON1. Use a high insulation soldering iron with a thin pointed end of it .2. A 30w soldering iron is recommended for easily removing parts.

! REPLACEMENT STEPS

1. How to remove Chip parts#### Resistors, capacitors, etc

(1) As shown in the f igure, push the part with tweezers andalternately melt the solder at each end.

(2) Shif t with tweezers and remove the chip part.

#### Transistors, diodes, variable resistors, etc

(1) Apply extra solder to each lead.

(2) As shown in the f igure, push the part with tweezers and

alternately melt the solder at each lead. Shift and remove thechip part.

Note : After removing the part , remove remaining solder from the

pattern.

2. How to install Chip parts#### Resistors, capacitors, etc

(1) Apply solder to the pattern as indicated in the figure.

(2) Grasp the chip part with tweezers and place it on the solder.

Then heat and melt the solder at both ends of the chip part.

#### Transistors, diodes, variable resistors, etc

(1) Apply solder to the pattern as indicated in the figure.(2) Grasp the chip part with tweezers and place it on the solder.

(3) First solder lead A as indicated in the figure.

(4) Then solder leads B and C.

SOLDE R SOLDE R

A

B

C

A

B

C

No. 51945


10

REPLACEMENT OF MEMORY ICs1. Memory ICs

This TV use memory ICs. In the memory ICs, there are memorized datafor correctly operating the video and def lection circuits . When replacingmemory ICs, be sure to use ICs written with the initial values of data.

2. Procedure for replacing memory ICs

PROCEDURE

(1) Power off

Switch the power off and unplug the power cord from the outlet.

(2) Replace ICs.

Be sure to use memory ICs written with the init ial data values.

(3) Power onPlug the power cord into the outlet and switch the power on.

(4) Check and set SYSTEM CONSTANT SET :

**** It must not adjust without signal.

1) Press the INFORMATION key and the MUTING key of the

REMOTE CONTROL UNIT simultaneous ly.2) The SERVICE MENU screen of Fig. 1 will be displayed.

3) While the SERVICE MENU is displayed, press the

INFORMATION key and MUTING key s imultaneously, and theSYSTEM CONSTANT SET screen of Fig. 2 will be displayed.

4) Check the setting values of the SYSTEM CONSTANT SET of

Table 1. If the value is dif ferent, select the setting item with theFUNCTION UP/DOWN key, and set the correct value with the

FUNCTION -/+ key.5) Press the MENU key to memorize the sett ing value.

6) Press the INFORMATION key twice, and return to the normalscreen.

(5) Setting of receive channels

Set the receive channel.For setting, refer to the OPERATING INSTRUCTIONS.

(6) User settingsCheck the user sett ing values of Table 2, and if sett ing value is

different, set the correc t value.For setting, refer to the OPERATING INSTRUCTIONS.

(7) Setting of SERVICE MENUVerify the setting items of the SERVICE MENU of Table 3, and reset

where necessary.For setting, refer to the SERVICE ADJUSTMENTS.

Names of key

iiii

▼

▼

▼

▼

INFORMATION

MUTING

FUNCTION UP/DOWN

MENU

FUNCTION -/+

key

OK

NAME OF REMOTE CONTROL KEY

SE RV ICE MENU

1. IF 2. V/C

3. AUDIO 4. DEF

5. VSM PRESET 6. STATUS7. PIP 8.　---

9. SHIPPING (OFF) 0. BUS FREE

1-9 : SELECT i : EXIT

Fig.1

SYS TEM CONS TANT S ET

1. DESTINATION EU

- /+ : STORE i : EXIT

Fig.2

OK

No. 51945


11

SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)

Setting item Setting content Setting value Setting item Setting content Setting value

DESTINATION EU DOLBY NO

CRT TYPE 16:9 BBE YES

PURITY NO PROGRESSIVE NO

PICTURE TILT YES TDA9178 NO

DIGIPURE PRO NO TONE IC NO

PIP NO FLAT YES

PIC&TEXT NO

USER SETTING VALUES (TABLE 2)PICTURE SETTING EXT SETTING

TINT COOL

CONTRAST / BRIGHTSHARP / COLOUR

IDS-INDUBBING

BLANKBLANKEXT-1→EXT-2

PICTURE FEATURES FEATURES

DIGITAL VNR AUTO

COLOUR SYSTEM TV : According to preset CHEXT : AUTO

4:3 AUTO ASPECT PANORAMIC

SLEEP TIMERBLUE BACK

OFFON

SOUND SET TING INSTALL

BASS / TREBLE / BALANCE LANGUAGE ENGLISH

HYPER SOUNDBBE

OFFON

EDIT/MANUAL PRESET CH onlyThe others : BLANK

SERVICE MENU SETING ITEMS (TABLE 3)

Setting item Setting value Setting item Setting value

1. IF1. VCO2. ATT ON/OFF

4. DEF.

1. V-SHIFT2. V-SIZE3. H-CENT4. H-SIZE5. TRAPEZ6. EW-PIN7. COR-PIN8. COR-UP9. COR-LO10. ANGLE11. BOW12. V-S.CR13. V-LIN

2. V / C

1. RGB BLK2. WDR R3. WDR G4. WDR B5. BRIGHT6. CONTRAST7. COLOUR8. HUE9. SHARP10. VCO ADJ.11. VID AGC12. SYC SLI13. A MOVIE

3.AUDIO (Do not adjust)

1. ERR LIMIT2. A2 ID THR3. Q-PEAK

9.SHIPPING (Do not adjust)

ON/OFF

5. VSM PRESETCOOLNORMALWARM

1. CONT.2. BRIGHT3. SHARP4. COLOUR5. HUE6. WDR R7. WDR G8. WDR B

6.STATUS(Do not adju st)

VPSPDC

CENTER

REFER to VSM PRESET

EKEU EI

4:316:9

YESNO

YESNO

YESNO

1TUNERNO

YESNO

YESNO

YESNO

YESNO

YESNO

YESNO

YESNO2TUNER

＊＊＊＊ : Do not adjust

No. 51945


12

SERVICE ADJUSTMENTSBEFORE STARTING SERVICE ADJUSTMENT1. There are 2 ways of adjusting this TV: One is with the

REMOTE CONTROL UNIT and the other is the conventional

method using adjustment parts and components.2. The setting (adjustment) using the REMOTE CONTROL

UNIT is made on the basis of th e initial setting values. Thesetting values which adjust the screen to the optimum

condition can be different from the initial setting values.3. Make sure that connect ion is correct ly made to AC power

source.4. Turn on the power of the TV and measuring instrument for

warming up for at least 30 minutes before start ing adjustment.5. If the receive or input signal is not specified, use the most

appropriate s ignal for adjustment.6. Never touch parts (such as variable resistors, transformers and

condensers) not shown in the adjustment items of this service

adjustment.

7. Preparation for adjustment (presetting):Unless otherwise specified in the adjustment items, preset the

following funct ions with the REMOTE CONTROL UNIT.

" Setting posit ion

PICTURE MODE (VSM) NORMAL

SLEEP TIMER OFF

TONE BALANCE CENTER

ZOOM FULL

MEASURING INSTRUMENT AND FIXTURES1. DC voltmeter (or digital voltmeter)2. Oscilloscope

3. Signal generator (Pattern generator) [PAL / SECAM / NTSC]

4. Remote control unit

ADJUSTMENT ITEMS● Check ing items.● Adjustment of FOCUS & SCREEN● VSM preset adjust setting.● VIDEO / CHROMA circuit adjustment.● DEFLECTION c ircuit adjustment.● AUDIO circuit adjustment. (Do not adjust)

No. 51945


13

ADJUSTMENT LOCATIONS

E1

CN014

CN013

TP-E

CRT SOCKET PWB (SOLDER SIDE)

TOP

FRONT

MAIN PWB POWER&DEF PWB

FRONT

CN

001

AV SEL PWB

TUNER

CN002

W DEG

1pin:B1(TP-91)2pin:NC3pin:X-ray4pin:X-ray5pin:TP-E

5

1

X

FRONT CONTROL PWB (1 /2)FRONT

HV

TP-47B

CN014

CN013

SP R

PWF901POWER SW

SP L

MICOM

100Hz

CN002

F

JJ

CN004

CN005

CN006

TP-Y

FRONT CONTROL PWB (2 /2)

FOCUS 2

SCREEN

FOCUS 1

32"M OD EL

SCREEN

FOCUS

28"M OD EL

UP DOWN

S

REMOCONLED

VLHP R

HVT

No. 51945


14

BASIC OPERATION SERVICE MENU1. TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 2. SERVICE MENU ITEMS

With the SERVICE MENU, various sett ings (adjustments) can be made, and they are broadly c lassif ied in the following items of settings(adjus tments ):(1) 1. IF･･･････････････････････ This mode adjusts the setting values of the IF circuit .

(2) 2.V/C ･･････････････････････ This mode adjusts the setting values of the VIDEO / CHROMA circuit.(3) 3.AUDIO･･･････････････････ This mode adjusts the setting values of the mult iplic ity SOUND circuit.

(4) 4.DEF ･････････････････････ This mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below.FULL (100/120Hzi)

PANORAMIC (100/120Hzi)

SUBTIT LE (100/120Hzi)COMPRESS (Fixed value) (100/120Hzi)

(5) 5.VSM PRESET･････････････ This mode adjusts the initial sett ing values of COOL, NORMAL and WARM. (VSM : Video Status Memory)

3. BASIC OPERATION OF SERVICE MENU

(1) Ho w to enter SERVICE MENU

Press the INFORMATION key and the MUT ING key of the REMOTE CONTROL UNIT simultaneous ly, and the SERVICE MENU screen of Fig.1 will be displayed.

(2) Selection of SUB MENU SCREEN

Press one of keys 1～5 of the REMOTE CONTROL UNITand select the SUB MENU SCREEN (See Fig. 3), form the

SERVICE MENU.

SERVICE MENU → SUB MENU 1. IF 2. V / C 3. AUDIO 4. DEF. 5. VSM PRESET 6. STATUS 7. PIP 8. --- 9. SHIPPING (OFF) 0. BUS FREE

Names of key

iiii

▼

▼

▼

▼

INFORMATION

MUTING

FUNCTION UP/DOWN

MENU

FUNCTION -/+

key

OK

SERVICE MENU

NAME OF REMOTE CONTROL KEY

Fig.2

SE RVICE ME NU

1. IF 2. V/C3. AUDIO 4. DEF5. VSM PRESET 6. STATUS7. PIP 8. ---9. SHIPPING (OFF) 0. BUS FREE


Fig.1


No. 51945


15

1. RGB BLK2. WDR R3. WDR G4. WDR B5. BRIGHT6. CONTRAS T7. COLO UR8. HUE9. SHARP10. V CO ADJ11. V ID AGC12. S Y C SL I13. A M O VIE

SERVICE MENU

V /C

1. RGB_BLK ****

2 . V/C

P AL

- / + : STORE i : EXIT

DE F *** Hz FULL

1. V-SHIFT

4 . DEF

***


1. V- SHIFT2. V- SIZE3. H-CE NT4. H-S IZE5. TRAP EZ6. EW -P IN7. COR-P IN8. COR-UP9. COR-L O10. A NGLE11. B OW12.V- S.CR13.V- LIN

IF S ER VICE M ENU

1. VCO2. ATT ON/OFF


SERVICE MENU

1. IF 2. V /C3. AUDIO 4. DEF5. VSM PRESET 6. STATUS7. P IP (O FF) 8. - - -9. SHIPPING (OF F) 0. BUS F REE

1-9 : SELECT : EX ITi

1. ERR L IM IT2. A2 ID THR3. Q P EAK

AUDIO

3. AUDIO

1. ERR LIMIT 100H

ERROR RATE = ********


1.IF(V CO)

CO OLNO RMALW AR M

5. VS M PRE S E T

V SM P RE SE T NORM AL

1.CONT ***

- / + : STORE i : EXIT1. CONT.2. BRIGHT3. SHARP4. COLO UR5. HUE6. WDR R7. WDR G8. WDR B

Do no t move

Do no t adjust

OK

OK

OK OK

Fig.3 SUB MENU SCREEN

No. 51945


16

(3) Method of Setting

1) Method of Setting 1.IF

[VCO] ･･･････････････････････････････････ It mus t not adjust without signal.① 1 Key････････････････････････････････ Select 1.IF.

② 1 Key････････････････････････････････ Select 1.VCO(CW)

Make sure that the arrow position between the ABOVE REF and BELOW REF.

③ INFORMATION Key･･･････････････････ Return to the SERVICE MENU screen.

2) Method of sett ing 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET.

① 2～5 Key･････････････････････････････ Select one from 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET.

② FUNCTION UP / DOWN ( / ) Key ･････ Select setting items.

③ FUNCTION -/+ ( / ) Key ･････････････ Set (adjust) the setting values of the setting items.

④ MENU Key ･･･････････････････････････ Memorize the setting value.

(Before storing the sett ing values in memory, do not press the CH, TV, POWER ON / OFF key - if you do, the values will not be stored in memory.)

⑤ INFORMATION Key･･･････････････････ Return to the SERVICE MENU screen.

3) Do not setting 6.STATUS, 7.PIP, 8.--- , 9.SHIPPING(OFF) & 0.BUS FREE.

(4) Release of SERVICE MENU1) After completing the setting, return to the SERVICE MENU, then again press the INFORMATION key.

No. 51945


17

ADJUSTMENTS

CHECK ITEM

Item Measuringinstrument

Test point Ad justment part Description

B1Power Supplycheck

Signalgenerator

DC voltmeter

Remotecontrol unit

TP-91(B1)TP-E(####)

[X connectoron POWER

DEF PWB]

1.RGB BLK 1. Receive a any broadcast.2. Push the ZOOM key and select the FULL mode.

3. Select 2. V/C from the SERVICE MENU.4. Select 1. RGB BLK with function UP / DOWN ( / ) key.

5. Press the function + ( ) key to f ind the cut off screen (Blackscreen).

6. Connect a DC voltmeter to TP-91(B1) and TP-E(#).

7. Make sure that the voltage is DC139.9 ±2.0V.

8. Press the function ( ) key to return to service menu..

High Voltagecheck

Signalgenerator

DC volunteer

Remotecontrol unit

CRT anode

Chassis

GND

1.RGB BLK 1. Receive a any broadcast.

2. Push the ZOOM key and select the FULL mode.3. Select 2. V/C from the SERVICE MENU.

4. Select 1. RGB BLK with function UP / DOWN ( / ) key.5. Press the function + ( ) key to f ind the cut off screen (Black

screen).

6. Connect a DC voltmeter to CRT ANODE and chassis GND.7. Make sure that the voltage is DC 31.0kV .

8. Press the function ( ) key to return to service menu.

VCO check Remotecontrol unit

1. VCO " Under normal conditions, no adjustment is required.

" Conf irmat ion adjustment.

1. Select 1.IF from the SERVICE MENU.2. Then select 1.VCO from the IF SERVICE MENU.

3. Receive any broadcast.

4. Check the arrow (←←←←) position between the ABOVE REF . and

BELOW REF.

+1kV-1.5kV

TOO HIGHABOVE REFJUST REFBELOW REF

TOO LOW

i : EXIT

VCO(CW) ****MHz

MAIN

1. VCO

2. ATT ON/OFF

i : EXIT

IF SERVICE MENU

1-2 : SELECT

(Do not move)

No. 51945


18

FOCUS & SCREEN ADJUSTMENT

ItemMeasuringinstrument Test point Ad justment part Description

FOCUS

adjustment[28 MODEL]

Signal

generator

FOCUS VR

[In HVT]

[28MODEL]

1. Receive a cross -hatch signal.2. Press the ZOOM key and select the FULL mode.

3. While watching the screen, adjust the FOCUS VR to make thevertical and horizontal lines as f ine and sharp as possible.

4. Make sure that when the sc reen is darkened, the lines remainin good focus .

FOCUS

adjustment

[32 MODEL]

Signal

generator

FOCUS 1

FOCUS 2

[In HVT]

[32MODEL]

1. Receive a cross-hatch signal.

2. Push the ZOOM key and select the FULL mode.3. By turning the FOCUS2 VR, and adjust the picture so that the

part vertical line may become thinnest.4. By turning the FOCUS1 VR, and adjust the picture so that the

3rd horizontal line from the upper may become uniform at theline center and its periphery.

5. Carry out adjustment by repeat ing the steps 3 and 4 above.

6. Make sure that when the sc reen is darkened, the lines remainin good focus.

SCREENAd justment

Signal

generator

SCREEN VR[In HVT]

1 Press a whole black signal2 Press the ZOOM key and select the FULL mode.

3 Select 2. V/C from the SERVICE MENU.4 Turn the SCREEN VR clockwise from the full counter

clockwise position and stop it at the point where CLOW status(marked in Fig.) changes from 1 to 0 to 1 (which is

indicated at the 3rd column from the right.)5 Then turn the SCREEN VR counterclockwise, and stop where

the CLOW status changes 1 to 0

＊ CLOW : control loopout of window.

SCREEN VR

HVT

FOCUS VR

V/C

1. RGB BLK 00

CLOWstatu s

- / + : STORE i : EXITOK

0 0 0 0 0 1 0 0

PAL

SERVICE MODE SCREEN

FOCUS1(F1)

SCREEN1(S1)

FOCUS2(F2)

HVT

FOCUS 2

FO

CU

S 1

No. 51945


19

VSM PRESET ADJUST SETTING



VSM PRESET

setting

Remote

control unit

1. CONT .

2. BRIGHT3. SHARP

4. COLOUR5. HUE

6. WDR R7. WDR G

8. WDR B

1. Select COOL with the MENU key of the remote control unit.

2. Select 5.VSM PRESET from the SERVICE MENU.3. Adjust the FUNCTION UP/DOWN ( / ) and -/+ ( / )key to

bring the set values of 1.CONT ～ 8. WDR B to the values

shown in the table.4. Press the MENU key and memorize the set value.

5. Respectively select the VSM PRESET mode for NORMAL andWARM, and make similar adjustment as in 3 above.

6. Press the MENU key and memorize the set value.

＊ Refer to OPERATING INSTRUCTIONS for the PICTURE

MODE.

1.CONT. 2.BRIGHT 3.SHARP 4.COLOUR 5.HUE 6.WDR R 7.WDR G 8.WDR B

COOL +16 0 -10 +1 0 -27 -12 0

32 NORMAL 0 0 -10 0 0 0 0 0

WARM -13 0 -12 -1 0 +5 0 0

COOL +13 0 -12 0 0 -28 -12 0

28 NORMAL -3 0 -12 0 0 0 0 0

WARM -13 0 -12 -1 0 +4 0 0

SETTING VALUES OF VSM PRESET

No. 51945


20

VIDEO / CHROMA CIRCUIT ADJUSTMENT

The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values.The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

Setting item(Adjustment item) Initial setting value

2. V/C PAL SECAM NT SC

1.RGB BLK

2.WDR R 0000

3.WDR G 0000

4.WDR B (Do not adjust) -012

5.BRIGHT 0000

6.CONTRAST 0060

7.COLOUR 0000

8.HUE 0020

9.SHARP (Do not adjust) 0007

10.VCO ADJ. (Do not adjust)

11.VID AGC (Do not adjust) 0000

12.SYC SLI (Do not adjust) 0007

13.A MOVIE (Do not adjust) 0001


No. 51945


21

ItemMeasuring

instrumentTest point Ad justment part Description

WHITE

BALANCE(High Lig ht)

adjustment

Signal

generator

Remotecontrol unit

2. WDR R

3. WDR G

4. WDR B (Do not adjust)

" Set the PICTURE MODE to NORMAL.

1. Receive a black and white signal (colour of f).2. Select 2.V/C from the SERVICE MENU.

3. Modify 2. W DR R and 3.WDR G data to adjust the whitebalance ( high light ).

4. Press the MENU key and memorize the set value.5. Change the contras t and brightness with the remote control up

& down from lowlight to highlight and check that the trackingof the white balance is good.

SUB BRIGHTadjustment

Remotecontrol unit

5. BRIGHT 1. Receive any broadcast.2. Select 2.V/C from the SERVICE MENU.

3. Select 5.BRIGHT with the FUNCTION UP/DOWN ( / ) key.4. Set the init ial sett ing value with the FUNCTION -/+ ( / )key.

5. If the brightness is not the best with the initial setting value,make fine adjustment until you get the bes t brightness.


SUB CONT.

Ad justment

Remote

control unit

6.CONT. 1. Receive any broadcast.

2. Select 2.V/C from the SERVICE MENU.3. Select 6.CONT with the FUNCTION UP/DOWN ( / ) key.

4. Set the initial setting value with the FUNCTION - / + ( / )key.

5. If the contrast is not the best with the initial setting value, makefine adjustment until you get the best contras t.


No. 51945


22

ItemMeasuring


7.COLOUR

(PAL～～～～NT SC)

[Method of adjustment without measuring instrument]

PAL COLOUR (PAL COLOUR)

1. Receive PAL broadcast.2. Select 2.V/C from the SERVICE MENU.

3. Select 7.COLOUR with the FUNCTION UP/DOWN ( / ) key.4. Set the initial setting value for PAL COLOUR with the

FUNCTION - or + ( / ) key.5. If the colour is not the bes t with the initial set value, make

fine adjustment until you get the best colour.6. Press the MENU key and memorize the set value.

SECAM COLOUR

(SECAM COLOUR)

1. Receive a SECAM broadcast.2. Make fine adjustment of SECAM COLOUR in the same

manner as for above.

(NTSC 3.58 COLOUR)

1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal f rom theEXT terminal.

2. Make similar f ine adjustment of NT SC 3.58 COLOUR in thesame manner as for above.

S UB CO LO URⅠⅠⅠⅠ

adjustment

Remote

control unit

NTSC COLOUR

(NTSC 4.43COLOUR)

1. When NTSC 3.58 COLOUR set, NTSC 4.43 COLOUR willautomatically set.

REMOTE CONTROL KEY

CH. key

MENU( OK ) key

FUNCTION key

　　( INFORMATION ) keyi

No. 51945


23

ItemMeasuring


7.COLOUR

(PAL～～～～NT SC)

[Method of adjustment using measuring instrument]

PAL COLOUR (PAL COLOUR)

1. Receive a PAL full f ield colour bar signal (75% white).2. Select 2.V/C from the SERVICE MENU.

3. Select 7.COLOUR with the FUNCTION UP/DOWN ( / ) key.4. Set the init ial setting value of PAL COLOUR with the

FUNCTION - or + ( / ) key.5. Connect the osc illoscope between TP-47B and TP-E(#).

6. Adjust PAL COLOUR and bring the value of (A) in theillustration to the values as shown given billow (Voltage

difference between white (W) and blue (B)).7. Press the MENU key and memorize the setting value.

SECAM COLOUR

(SECAM COLOUR)

1. Receive a SECAM full field colour bar signal (75% white).2. Set the init ial sett ing value of SECAM COLOUR with the

FUNCTION -/+ ( / ) key.3. Adjust SECAM COLOUR and bring the value of (A) in the

illustration to the values as shown given billow (Voltagedifference between white (W) and blue (B)).

4. Press the MENU key and memorize the setting value.

(NTSC 3.58 COLOUR)1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field

colour bar with 75% white) from the EXT terminal.2. Set the initial setting value of NTSC 3.58 COLOUR with the

FUNCTION -/+ ( / ) key.3. Adjust NTSC 3.58 COLOUR and bring the value of (A) in the

illustration to the values as shown given billow (Voltagedifference between white (W) and blue (B)).

4. Press the MENU key and memorize the setting value.

S UB CO LO UR ⅡⅡⅡⅡ

adjustment

Signal

generator

Oscilloscope

Remotecontrol unit

TP-47B

TP-E(#### )[CRT

SOCKETPWB ]

NTSC COLOUR

(NTSC 4.43COLOUR)1. When NTSC 3.58 COLOUR set, NTSC 4.43 COLOUR will

automatically set.0W Cy Mg B

(A) (-)

(+)

Y G R

VOLTAGE (W-B) +5V

VOLTAGE (W-B) +4V

VOLTAGE (W-B) +5V +6V

32 28

No. 51945


24

ItemMeasuring


8.HUE [Method of adjustment without measuring instrument]

NTSC 3.58 HUE [NTSC 3.58 HUE]

1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full fieldcolour bar with 75% white) from the EXT terminal.

2. Select 2.V/C from the SERVICE MENU.3. Select 8. HUE with the FUNCTION UP/DOW N ( / ) key.

4. Set the initial sett ing value of NTSC 3.58 HUE with theFUNCTION -/+ ( / ) key.

5. If you cannot get the best hue with the initial sett ing value,make fine adjustment until you get the bes t hue.


SUB HUEⅠⅠⅠⅠ

adjustment

Remotecontrol unit

NTSC 4.43 HUE (NTSC 4.43 HUE)1. W hen NTSC 3.58 is set, NTSC 4.43 will be automatically set at

the respective values

8. HUE [Method of adjustment using measuring instrument]

NTSC 3.58 HUE [NTSC 3.58 HUE]

1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full fieldcolour bar with 75% white) from the EXT terminal.

2. Select 2.V/C from the SERVICE MENU.3. Select 8. HUE with the FUNCTION UP/DOW N ( / ) key.

4. Set the initial sett ing value of NTSC 3.58 HUE with theFUNCTION - or + ( / ) key.

5. Connect the osc illoscope between TP-47B and TP-E(#)6. Adjust NTSC 3.58 HUE to bring the value of (B) in the

illustration to the values as shown given billow (voltagedifference between white (W) and magenta (Mg)).

7. Press the MENU key and memorize the setting value

Ad justmentof

SUB HUEⅡⅡⅡⅡ

Signalgenerator

Oscilloscope

Remote

control unit

TP-47BTP-E(#### )

[CRTSOCKET

PWB]

NTSC 4.43 HUE (NTSC 4.43 HUE)

1. When NTSC 3.58 COLOUR set, NTSC 4.43 COLOUR willautomatically set.

0W Cy Mg B

(B) (-)

(+)

Y G R

32 28

VOLTAGE (W-Mg) -8V -3V

No. 51945


25

DEFLECTION CIRCUIT ADJUSTMENT

There are 4 aspect modes ( ①①①①FULL, ②②②②PANORAMIC, ③③③③SUBTIT LE, ④④④④COMPRES) of the adjustment ( 1 ) 100Hz i mode,( 2 ) 120Hz i mode ････････････････････････ depending upon the kin d of signals ( vertical frequency 100Hzi / 120Hzi ).

" When the 100Hz FULL mode has been established, the settin g of other modes will be done automatically.Ho wever, if the picture quality has not been optimized, adjust each mod e again, respectively.

" The adjustment using the remote control unit is made on the basis of the initial setting values." The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

Initial setting value (AV32H20EUS)

Initial setting value

FULL PANORAMIC SUBTITLE COMPRESSSetting item Ad justment name

100Hzi 120Hzi 100Hzi 120Hzi 100Hzi 120Hzi 100Hzi 60P

1. V-SHIFT Vert ical center -001 +001 0000 0000 +012 0000 0000 0000

2. V-SIZE Vert ical height +002 -001 +002 0000 +008 0000 -014 0000

3. H-CENT Horizontal center -005 +004 -002 0000 0000 0000 0000 0000

4. H-SIZE Horizontal width 0000 -004 -003 0000 0000 0000 0000 0000

5. TRAPEZ Trapezoidal distort ion correc tion -013 -002 -003 0000 -002 0000 0000 0000

6. EW-PIN Side pin correction -041 0000 0000 0000 0000 0000 0000 0000

7. COR-PIN Corner Pin 0000 0000 0000 0000 0000 0000 0000 0000

8. COR-UP Corner Pin correct ion Up side 0000 0000 0000 0000 0000 0000 0000 0000

9. COR-LO Corner Pin correct ion Low s ide 0000 0000 0000 0000 0000 0000 0000 0000

10.ANGLE Angle correction 0000 0000 0000 0000 0000 0000 0000 0000

11.BOW Bow-shaped dis tortion correct ion 0000 0000 0000 0000 0000 0000 0000 0000

12.V-S.CR(Do not adju st)

Vert ical height correction 0000 0000 0000 0000 +012 0000 0000 0000

13.V-LIN(Do not adju st) Vert ical Linearity -007 0000 0000 0000 -017 0000 0000 0000

Initial setting value (AV28H20EUS, AV28H20EUB)

Initial setting value

FULL PANORAMIC SUBTITLE COMPRESSSetting item Ad justment name

100Hzi 120Hzi 100Hzi 120Hzi 100Hzi 120Hzi 100Hzi 60P

1. V-SHIFT Vert ical center -002 +002 0000 0000 +011 0000 0000 0000

2. V-SIZE Vert ical height +006 0000 +003 0000 +009 0000 -015 0000

3. H-CENT Horizontal center -013 +004 -003 0000 +001 0000 0000 0000

4. H-SIZE Horizontal width -002 -004 -004 0000 0000 0000 0000 0000

5. TRAPEZ Trapezoidal distort ion correc tion -023 0000 -003 0000 0000 0000 0000 0000

6. EW-PIN Side pin correction -042 0000 0000 0000 0000 0000 0000 0000

7. COR-PIN Corner Pin 0000 0000 0000 0000 0000 0000 0000 0000

8. COR-UP Corner Pin correct ion Up side 0000 0000 0000 0000 0000 0000 0000 0000

9. COR-LO Corner Pin correct ion Low s ide 0000 0000 0000 0000 0000 0000 0000 0000

10.ANGLE Angle correction 0000 0000 0000 0000 0000 0000 0000 0000

11.BOW Bow-shaped dis tortion correct ion 0000 0000 0000 0000 0000 0000 0000 0000

12.V-S.CR(Do not adju st)

Vert ical height correction +002 0000 0000 0000 +010 0000 0000 0000

13.V-LIN(Do not adju st) Vert ical Linearity -005 0000 0000 0000 -015 0000 0000 0000

＊＊＊＊ : Fixed value

No. 51945


26

ItemMeasuring


V-SHIFTAd justment

Signalgenerator

Remote

control unit

1. V- SHIFT [FULL mode]1. Receive a circle pattern signal of vert ical frequency 50Hz.

2. Select 4.DEF from the SERVICE MENU.3. Select 1.V-SHIFT with the FUNCTION UP / DOWN ( / ) key.

4. Adjust V-SHIFT to make A = B.5. Check the adjustment value above in other zoom mode. If it is a

wrong adjustment, re-adjust in PANORAMIC mode and adjustby 1.V-SHIFT.


V-SIZ Eadjustment

2.V-SIZE 1. Receive a cross-hatch signal.2. Select 2.V-SIZE and set the initial setting value.

3. Adjust V-SIZE and make sure that the vert ical screen size ofthe picture size is in the bellow table.

4. Press the MENU key and memorize the set value.5. Input a NTSC VIDEO signal (60Hz) from the EXT terminal,

and make sure that the vert ical screen s ize is in the table

below.6. Press the MENU key and memorize the set value

Screen size

Picture size 100%

Picturesize

100%

Screensize

A

B

ASPECT MODE FULL PANORAMIC SUBTITLE

SCREENTOP 92% 87% 70%

SCREEN BOTTOM

92% 87% 83%

[ SCREEN SIZE ]

No. 51945


27

ItemMeasuring


H. CENTER

adjustment

3.H-CENT. 1. Receive a c ircle pattern s ignal.

2. Select 3.H-CENT and set the initial setting value.3. Adjust H-CENT to make C=D.


H.SIZ E

adjustment

4.H-SIZ E 1. Receive a circle pattern signal.

2. Select 4.H-SIZE and set the initial sett ing value.3. Adjust H-SIZE and make sure that the horizontal screen size

of the picture size is in the bellow table.4. Press the MENU key and memorize the set value.5. Input a NTSC VIDEO signal (60Hz) from the EXT terminal,

and make sure that the horizontal screen size of the eachASPECT mode is in the below table.


EW-PINadjustment

6.EW-PIN 1. Select 6.EW-PIN and set the initial setting value2. Adjust EW-PIN and make the 2nd.vert ical lines at the left and

right edges of the screen straight. Also make sure that the 3rdvertical lines are straight.


ASPECTMODE FULL PANORAMIC SUBTITLE

H SIZ E 92% 95% 92%

[ SCREEN SIZE ]

C D

90%90%

Straight

No. 51945


28

ItemMeasuring


TRAPEZIUM

adjustment

Signalgenerator

Remotecontrol unit

5.TRAPEZ 1. Receive a cross-hatch signal.

2. Select 5.TRAPEZ with the FUNCTION UP/DOWN ( / ) key.3. Set the init ial sett ing value of TRAPEZ with the FUNCT ION

- or + ( / ) key.4. Adjust TRAPEZ and bring the VERTICAL lines at the right and

left edges of the screen parallel .5. Press the MENU key and memorize the set value.

COR. UP/LOadjustment

Signalgenerator

Remotecontrol unit

7.COR-PIN

8.COR-UP

9.COR-LO

1. Select 8.COR-UP with the FUNCTION UP / DOWN ( / )key.

2. Set the init ial sett ing value of COR.-UP with the FUNCTION- or + ( / ) key.

3. Adjust COR-UP, and bring the straight line at the upper corner.4. Select 9.COR-LO with the FUNCTION UP / DOWN ( / )

key.5. Set the init ial sett ing value of COR-LO with the FUNCTION

- or + ( / ) key.6. Adjust COR-LO, and bring the straight line at the low corner.

7. Press the MENU key and memorize the set value.8. If the extreame upper & lower corners are a litt le pin or barrel

chose 7.COR-PIN and adjust.9. Press the MENU key and memorize the set value

ANGL E

adjustment

10. ANGLE • In case where there is a parallelogrammical distortion ofimages o n the screen. (Fig.A)

1. Select 10.ANGLE with the FUNCTION UP / DOW N ( / )

key.2. Adjust ANGEL, and bring the VERTICAL lines straight..


Parallel

Straight Straight

Fig. A

No. 51945


29



BOW

adjustment11.BOW • In case where th ere is a bow-shaped distortion o f images

on the screen. ( Fig.B)

1. Select 11.BOWwith the FUNCTION UP/DOWN ( / ) key.2. Adjust BOW, and bring the VERTICAL lines straight.


V-S.CR

&V.LINEARITY

adjustment

12.V-S.CR

13.V-LIN

• When the vertical linearity has been deterioratedremarkably, perform the following steps.

1. Receive a cross-hatch signal.2. Select 13.V-LIN with the FUNCTION UP/DOW N ( / )key.

3. Set the init ial sett ing value of 13.V-LIN with the FUNCTION- / + ( / ) key.

4. Select 12.V-S.COR with the FUNCTION UP / DOWN ( / )key.

5. Set the init ial sett ing value of 12.V-S.COR with the FUNCTION

- / + ( / ) key.6. Adjust 13.V-LIN and 12.V-S.COR so that the spaces of each

line on TOP, CENTER and BOTTOM become uniform.

NOTE : Do not adjust PANORAMIC & SUBTIT LE mode.

At f irst the adjustment in 100Hz FULL mode should be done,then the data for the other aspect mode is corrected in the

respective value at the same time. And confirm the deflectionadjustment initial setting value in 120Hz (NTSC EXT mode)

FULL mode. If the adjustment in 100Hz each aspect mode hasbeen done and stored, the data for the same aspect modes in

120Hz is corrected in the respect ive value. Only the data for theother aspect mode in 120Hz is corrected for itself.

CENTER

BOT TOM

TOP

Fig. B

No. 51945


30

AUDIO CIRCUIT ADJUSTMENT" Do not touch 3. AUDIO adjustment of the SERVICE MENU as it requires no adjustment.

If values had changed for the some reason, set the initial values in the following table.

3. AUDIO (Do not adjust)

Setting item Variable range fixed value

1. ERR LIMIT 000H～FF0H 100H

2. A2 ID THR 00H～FFH 19H

3. Q-PEAK 0000H～7FFFH ---

SCHEMATIC DIAGRAMSCOLOUR TELEVISION

No.51945May 2002

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.



NOTE ON USING CIRCUIT DIAGRAMS

SEMICONDUCTOR SHAPES

BLOCK DIAGRAM

CIRCUIT DIAGRAMS

PATTERN DIAGRAMS

2-1

2-2

2-3

2-5

2-21

CD-ROM No.SML200205

BASIC CHASSIS

CONTENTS

1 2 3

4 5 6

7 8 9

0

P

AV

TV OK

MENU

P

TV

AV32H20EUS

AV28H20EUS

AV28H20EUB

1

No.51945

AV32H20EUS

AV28H20EUS

AV28H20EUB

STANDARD CIRCUIT DIAGRAM

NOTE ON USING CIRCUIT DIAGRAMS1.SAFETY

The components identified by the symbol and shading arecritical for safety. For continued safety replace safety critical components only with manufactures recommended parts.

2.SPECIFIED VOLTAGE AND WAVEFORM VALUESThe voltage and waveform values have been measured under the following conditions.

(1)Input signal : Colour bar signal

(2)Setting positions of each knob/button and variable resistor

(3)Internal resistance of tester :DC 20k /V

(4)Oscilloscope sweeping time :H 20µS/div

:V 5mS/div

:Others Sweeping time is specified

(5)Voltage values :All DC voltage values

Since the voltage values of signal circuit vary to some extent according to adjustments, use them as reference values.

3.INDICATION OF PARTS SYMBOL [EXAMPLE]

In the PW board :R1209 R209

4.INDICATIONS ON THE CIRCUIT DIAGRAM(1)Resistors

Resistance value

No unit :[ ]

K :[K ]M

Rated allowable powerNo indication :1/ 16 [W]

Others :As specified

Type

No indication :Carbon resistorOMR :Oxide metal film resistorMFR :Metal film resistorMPR :Metal plate resistorUNFR :Uninflammable resistorFR :Fusible resistor

Composition resistor 1/2 [W] is specified as 1/2S or Comp.

(2)Capacitors

: Original setting position when shipped

5.NOTE FOR REPAIRING SERVICEThis model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND and the ISOLATED(NEUTRAL) : ( ) side GND.Therefore, care must be taken for the following points.

(1)Do not touch the LIVE side GND or the LIVE side GND and the ISOLATED(NEUTRAL) side GND simultaneously. If the above caution is not respected, an electric shock may be caused. Therefore, make sure that the power cord is surely removed from the receptacle when, for example, the chassis is pulled out.

(2)Do not short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or never measure with a measuring apparatus measure with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND and ISOLATED(NEUTRAL) side GND at the same time. If the above precaution is not respected , a fuse or any parts will be broken.

Since the circuit diagram is a standard one, the circuit and circuit constants may be subject to change for improvement without any notice.

NOTEDue improvement in performance, some part numbers show in the circuit diagram may not agree with those indicated in the part list.When ordering parts, please use the numbers that appear in the Parts List.

Type

MM :Metalized mylar capacitorPP :Polypropylene capacitorMPP :Metalized polypropylene capacitorMF :Metalized film capacitorTF :Thin film capacitorBP :Bipolar electrolytic capacitorTAN :Tantalum capacitor

(3)Coils

No unit :[ µH]

Others :As specified

(4)Power Supply

:B1

:9V :5V

Respective voltage values are indicated

(5)Test point

:Test point :Only test point display

(6)Connecting method

:Connector :Wrapping or soldering

:Receptacle

(7)Ground symbol

:LIVE side ground

:ISOLATED(NEUTRAL) side ground

:EARTH ground

:DIGITAL ground

:[M ]

Capacitance value

1 or higher :[pF]less than 1 :[µF]Withstand voltageNo indication :DC50[V]

Others :DC withstand voltage [V]

AC indicated :AC withstand voltage [V] Electrolytic Capacitors

47/50[Example]:Capacitance value [µF]/withstand voltage[V]

No indication :Ceramic capacitor

:B2 (12V)

AV32H20EUS / AV28H20EUS / AV28H20EUB

May 2002 No. 519452-32

ISOLATED

SOUNDHYPER ECO TIMER

POWER

1 32

CDS

121

2

5

10

15

20 24

25

25

2420

15

10

5

2

1

LIVE

CKF1432-B01-1 /2!

TAKADA01.02.09

R035

VA901

S901

D007

W037

CN002

PW

D008

D009D010

D011

D012D013

D014

D018

IC001

LF901

W022

Q004

Q005

R005

R008

W023W024

R036

R037

W027

W028

W032W033

Y901Y902

Y903Y904

UL MARK

T3.15A

H

250V

15

1012

21

W001

R018

J

F901

W

W035C

003C

004

W020

C019

C022

C901

Q001 Q

002

Q003

Q006

Q007

R003

R004

W025

R020

R038

R039

W026

W030

W031

W034

W036

R006

FRONT

VP0205

DP8080

FRONT CONTROL PWB PATTERN [2/2]

AV32H20EUS

AV28H20EUS

AV28H20EUB

No.51945No.51945

AV32H20EUS

AV28H20EUS

AV28H20EUB

2

2-2

CONTENTSSEMICONDUCTOR SHAPES 2-2

BLOCK DIAGRAM 2-3CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM 2-5

PATTERN DIAGRAMSMAIN PWB PATTERN 2-21

SEMICONDUCTOR SHAPESTRANSISTOR

BOTTOM VIEW FRONT VIEW TOP VIEW

CHIP TR

ICBOTTOM VIEW FRONT VIEW TOP VIEW

CHIP IC

TOP VIEW

1 N

N1

OUT

E

ININ OUTE

1 N

N

1

N

N

N

1

N

ECB

E C B

C

B EB C E

(G)(D)(S) E C BE C B

POWER & DEF PWB PATTERN 2-23

MICOM PWB PATTERN

2-252-26

100Hz PWB PATTERN2-27

AV SW PWB PATTERN

2-29FRONT CONTROL PWB PATTERN [1/2] 2-31FRONT CONTROL PWB PATTERN [2/2] 2-32

CRT SOCKET PWB PATTERN

POWER & DEF PWB CIRCUIT DIAGRAM 2-9AV SW PWB CIRCUIT DIAGRAM 2-11MICOM PWB CIRCUIT DIAGRAM 2-13100Hz PWB CIRCUIT DIAGRAM 2-15CRT SOCKET PWB CIRCUIT DIAGRAM 2-17FRONT CONTROL PWB CIRCUIT DIAGRAM 2-19

2-31

12

4 3

7 8 10 1311

15129

14

1

8 7

39 6

54

2

MENU DOWN UP

5 6

1 3

5 19

CKF1432-B01-1 /2!

01.02.09TAKADA

31

R017

C001C002

C010C011W021

F

SL

SR

J001

R021

R022

S001 S002 S003

Y004

C005

W016

W018

J003

UL MARK

15

1012

CL009

R007

R015

R016

Y001

W019

J

Y002

L012

L001

C021

L002

L003

L010

L011

R001R002

R010

R012

R013

Y009

W014

W015

C006

LC001

LC002

Y005

Y006

Y007

Y008

FRONT

FRONT CONTROL PWB PATTERN [1/2]

AV32H20EUS

AV28H20EUS

AV28H20EUB

AV32H20EUS

AV28H20EUS

AV28H20EUB

No.51945 No.51945

3

BLOCK DIAGRAM

2-3 2-4

MAIN PWBSIF

IC101VIDEO

PROCESSOR& CODEC

IC201SAMPLE RATECONVERTER

IC301ENHANCE

IC551ROTATION

IC001MICRO PROCESSOR

IC101AV SW

EXT-1

EXT-2

EXT-3

EXT-4

AC IN

IC101MULTI SOUNDPROCESSOR

FUSE LF901

IC001

POWER SW

IC601POWER AMP

IC663BBE

IC665IC662

R

L

L

R

R-OUT

L-OUT

POWERBASSLPF

M_CV/Y

VTV1

TV OUT

L TV RTV

V1, L1, R1YS, SLOW1

V2, C2, R2

L2 OUT

R2 OUTV2 OUT

V3 / Y3, C3

L3, R3

63

AV SW PWB

M_C

REMOCON

S

KEY

REMOCONRECEIVER

FRONT CTRL PWB (2/2)

FRONT CTRL PWB (1/2)

SDA2 SCL2

MICOM PWB

D931 T901

Q521H.OUT

IC401V.OUT

B1

FOCUS1

FOCUS2

EHV

SCREEN

IC402EW/V DRIVE

H.OUT

SDA1SCL1

100Hz PWB

V.DY

H.DY

POWER & DEF PWB

B

CRT

VM COIL

CRT SOCKET PWB

IC203B-OUT

IC202R-OUT

IC201G-OUT

ROTATIONCOIL

HEADPHONE

V

V100, U100, Y100

T551HVT

R

G

IC301DEF & RGB

PROCESSOR

TU001TUNER

IC003SD RAM

IC004MEMORY

IC012MASKROMSP R

SP L

AV32H20EUS

AV28H20EUS

AV28H20EUB

AV32H20EUS

AV28H20EUS

AV28H20EUB

No.51945 No.51945

4

2-5 2-6

CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM [1/2]

QGA2501C1-10CN013

QGF1220C2-25CN002

2.2kR595

*1RESET

Q592

100kR596

220R314

SDA2

SCL2

*3D317

*3D318

24.576MHzQAX0549-001Z

X50115p

CHC502

0R501

.22/16

80%C551

100R301

100R302

.1/1

6C

302

.1/16C303

8V

.1/1

6C

305

XC

521

XC

581

3.3kR592

.068/16C311

.1/16C309

27kR303

220p CHC312

.022C315

.022C314

.022C313

.1/16C306

.01C316

XR

502

SDA9380

DEF & RGB PROCESSOR

IC301

.01C317

.01C318

.022

C32

1

.022

C32

2

.022

C32

3

.1/1

6C

307.1/16

C308

MA3051/M/-XD592

XR593

XC595

QGB1505J1-50CN001

QGB1505J1-50CN007

A_GND

A_GND

XR571

LA6515

ROTATIONIC551

10R551 120k

R552

XCN0R2

100kR558

10R560

68kR553

33kR555

*R

315

*R

316

*R

317

4.7kR556

X PURITYIC571

150kR559

5.6kR557

X

CN

015

18kR313

27kR312

330

R31

1

XR572

XR573

XR575

XR576

XR579

XR578

XR580

XSWITCH

Q572

XSWITCHQ571

X 1/2WR583

X

R581

XR577

18k

R31

9

5.6k

R31

8

1kR

401

*R463

1kR

402

330R403

330R404

1kR405

1kR40

6

QGB1505J1-50CN003

.1/1

6C

401

*3D591

*3D521

22kR521

5.6k

R52

2

820

R45

1

560

R591

5.6k

R49

2

*R

491

.047

/25

C49

1

XC452

XMD001

XR

723

15p CHC501

1kR304

68kR5621/50

C562

1.5kR511

82P

CH

C324

*3D

471

*3D

472

100/16C301

*1Q561

470p

CH

C591

10kR563

22kR564

100/16C402

*2Q562

.22/1680%C552

5.6kR565

560pCH

C561

3.3kR512

X

80%C572

XR574

XC573

XR582

XR585

XR584

XC574

.22/16

80%

C555

X80%C571

47/25C553

5.6kR554

QRN143J-0R0X

R561

*CN0R1

XCN0NS

X

80%C576

X

80%C575

.22/16

80%C554

12kR458

4.7kR459

12kR456

4.7kR454

12kR461

12kR455

15kR462

*D311

VCC

GND

BA10324AF-XEEW/V DRIVE

IC402

10kR701

10k

R70

2

1kR

703

1kR704

10k

R70

5

JLC1562BF-XIC701

10k

R70

8

.056/16C702

TU1_AFC

1kR714

.033/25C457

100

R71

1

100

R71

2

1kR715

10k

R70

7

10k

R70

610/50C701

AGC

1kR722

1kR

721

1kR

720

H/P_R

3.9k

R45

7

XD31

2

.01C453

100/16C560

QGB1506L1-16CN004

QGB1506L1-16CN005

QGB1506L1-16CN006

2200/10C310

BBE_BOOST

A_SUB_GND

R_SUB

BBE_ON/OFF

POW_ON/OFF

0Y701

XD313

XY702

A_GND

VTV1

LTV1

RTV1

DATA

MSP_RESET

SDA1

SCL1

32V

5V

STATUS

READY

AUDIO_MUTE

L/R_CENT

CLOCK

AMP_MUTE

CH41171-006CN00C

220

R77

6

220

R77

5

220

R77

4

220

R77

3

220

R77

2

MA3056/M/-XD771

MA3056/M/-XD772

MA3056/M/-XD774

MA3056/M/-XD773

A.MUTE

L

R

L_SUB

A_M+VCC

A_C_VCC

A_M-VCC

9V

H/P_GND

H/P_L*

D314

XD315

XD316

XR503

1kR504

.1/1

6C

456

.1/1

6C

455

2200/6.3C320

*3D

473

*R

493

0R322

0R321

.1/16C953

470/16C951

470/10C954

100/10C956

*3D

981

5.6

L951QQL26AM-5R6Z

L951BA09TIC951

IN OUT

BA08TIC952

IN OUT

220/10C955

1SR35-400A-T2D951 22

R1/2

R951

*3D982

.1/16C952

0

Y30

2

0

Y30

1

.1/1

6C

404

.1/1

6C

403

*CN0R3

XR323

XR324

0Y304

NQR0413-003X

K301 0Y

306

0Y305

*9D321

XHS952

.1/16C475

220kR465

NQR0431-001XLC303

NQR0431-001XLC301

1.5NQL092K-1R5X

L301

1.5NQL092K-1R5X

L302

NQ

R04

31-0

01X

LC30

2

0Y303

.1/16C471

VCC

GND

BA10358F-XEEHT CORRECT

IC471

X

CHC563

*1EHTCORRECT

Q471

220kR466

220kR468

68kR469

56kR467

22kR470

27kR471

6.8k

R47

2

12kR473

.01C472

*3D474

15kR475

56kR474

12kR476

.1/16C473

12kR477

82kR480

12kR478

.033/25C474

150kR479

*1

CORRECTEHT

Q472

2.7k

R48

2

4.7kR481

4.7k

R48

3

47kR484

4.7kR486

*R487

12kR485

33kR489

.033/25C454

.01C699

.1/16C564

*C458

*R464

*9D320

*10D319

*11D475X

Y901

XCN00V

*3D593

*2RESET

Q591.1/16C596

10/25

N

C351100R325

6.8kR326

*2Q301

R317 220 100

R491

R316 220 100R315 220 100

D311D314

*12*3

*12*3

CN0R1CHB219W-02P-S X

R463

CN0R3 XQGA2501C5-03Z

R487 33k120k

SMF-1402A-U2

SMF-1401A-U2

18k100k

R464XC458 .1/16

56k X

4.7K 3.3KR493 18K X

10V

OSD_B

V100

V10

0

U100

Y100

OSD_G

OSD_R

HPROT

VS

FBP

SDA2

SD

A1

SC

L1S

DA

0STA

TU

S

EW

_DR

IVE

SC

L0

AB

L

L/R

_CE

NT

CV

_A/D

BB

E_B

OO

ST

BB

E_O

N/O

FF

SCL2

ALC

VD+VD-

SU

BT

ITLE

E/W

ALC

Y50

HD

ROTATION

N/S_COR

SD

A2

3D_LED

SC

L2

ECO_LED

KE

Y1

KE

Y2

KE

Y3

RE

MO

CO

N

H/P

_DE

TE

CO

TIM

ER

_LE

D

ECO

KEY1

SD

A1

KEY2

VD

KEY3REMOCONH/P_DET

TIMER_LEDPOW_ON/OFF

PO

W_O

N/O

FF

OS

D_Y

S

TU

2_S

W1

AG

CTU

2_S

W0

TU

2_A

FC

TU

2_S

W1

A_S

UB

_GN

D

H/P_L

H/P_GNDSU

BT

ITLE

R_S

UB

A_SUB_GND

R_SUB

BBE_ON/OFF

H/P_R

H/P_L

BBE_BOOST

YS

2

S_C

V

TU

1_A

FC

AV

_LIN

K

DAT

A

MS

P_R

ES

ET

H/P_GND

SC

L2S

DA

2SC

L2S

DA

2

H/P_R

YS

2/A

FC

2

POW_ON/OFF

SC

L1

TX

T_C

V

AU

DIO

_MU

TE

YS

2/A

FC

2O

SD

_R

AM

P_M

UT

E

CLO

CK

EC

O_L

ED

PO

W_O

N/O

FF

SD

A1

SC

L1

AV

_LIN

K

TU

2_S

W0

A.M

UT

E

SCP

U10

0

Y10

0

OS

D_BY

50

OS

D_G

STA

TU

S

OSD_YS

B-Y

50

R-Y

50

IICF

RE

E

CV

_A/D

TX

T_C

V

LTV

1

RT

V1

L_S

UB

R L

VT

V1 S

C_B

SC

_GS

C_R

SC

_YS

3D_L

ED

RE

AD

Y

525P

IICF

RE

E

SDA1

SCL1

TU1_AFC

AGC

VTV1

LTV1

RTV1

CLOCK

DATA

STATUS

READY

MSP_RESET

AUDIO_MUTE

AMP_MUTE

L/R_CENT

M_C

V/Y

M_C

SC

L0SC

P

M_C

V/Y

A.MUTE

SD

A0M_C

SD

A1

SC

L1S_C

V

SC

_GS

C_R

SC

_BS

C_Y

S

R-Y

50B

-Y50

Y50

R

L

L_SUB

SD

A2

SC

L2

HD

VD

525P

9V

10V

GND12VGNDIk

RGB

PROTECTSVM_YSVM_YS

STBY_5V

YIN

9V

CR

T S

OC

KE

T P

WB

I2

CF

RE

ES

DA

0S

CL0

HD

OU

TV

DO

UT

GN

DH

DIN

VD

IN52

5/O

TH

SD

A2

SC

L2

SC

_YS

1

CLKI

X1

X2

CLEXT

TEST

SUBST

RESN

SCL1

SDA1

VDD(D)

H35K

H38K

HD

VSS(D)

PWM

VSYNC

B/V1

G/U1

R/Y1

VSS(A4)

VIN

UIN

YIN

VDD(A4)

DCI

VREFC

VREFN

VBLO

VREFH

PROTON

IBEAM

BSOIN

FH

1_2

HS

YN

C

VD

D(A

1)

VS

S(A

1)

FB

P

VD

D(A

2)

VS

S(A

2)

E/W

D/A

VD

+

VD

-

VD

D(A

3)

VS

S(A

3)

VP

RO

T

HP

RO

T

HS

AF

EF

BL1

FB

L2

RIN

GIN

BIN

VD

D(M

C)

RO

UT

GO

UT

BO

UT

SC

P

VS

S(M

C)

SV

M

VD

D(D

)

VS

S(D

)

SS

D

SW

ITC

H

SC

_B1

SC

_G1

NC

SD

A1

SYNC SEP PB

SC

_R1

NC

NS

ON

/OF

F

SC

_G2/

SC

_B2/

SC

_R2/

SC

L1

(ABL)

(Ik)

RG

BG

ND

RG

BG

ND

RG

BG

ND

AV SW PWB

100Hz PWB MICOM PWB

FR

ON

T C

ON

TR

OL

PW

B

SU

BT

ITLE

A_M

+V

CC

12V

12V

NC

NC

12V

TIMER_ON/OFF

GND

GNDGND

ECO_ON/OFF

REMOCON

GND

H/P DETECO

KEY1KEY2

GNDGNDSTBY_5V

3D_ON/OFF

P.ON/OFF

KEY3

H/P_L

H/P_R

H/P_L

H/P_R

H/P_GNDH/P_GND

-(B

-Y)1

00

-(R

-Y)1

00

8V8V8V GN

D

GN

DG

ND

525P

/OT

H

GN

DG

ND

GN

DG

ND

GN

D

5V5V 5V3.3V

3.3V

3.3V

SC

PV

OU

TH

0UT

CLK

OU

T

Y10

0

GN

D

GN

D

GN

D

GN

D

R-Y

50B

-Y50

Y50

S_C

V

M_C

M_C

V/Y

GN

D

GN

DG

ND

GN

D

GN

D

SC

L1S

DA

1

V.S

EN

CE

1

OU

T1

-V.1

V.1

GN

D

V.2

-V.2 OU

T2

V.S

EN

CE

2

VC

C

V.S

EN

CE

1

OU

T1

-V.1

V.1

GN

D

V.2

-V.2 OU

T2

V.S

EN

CE

2

VC

C

VS

S

LR_C

EN

CV

_A/D

M.S

W0

M.S

W1

BB

EB

OO

ST

BB

EO

N/O

FF

ALCVD

D

SD

A2

SC

L2

A0

A1

A2

SU

BT

ITLE

10V

10V

10V

R_S

UB

OS

D_E

W

MS

P_R

ES

ET

AU

DIO

_MU

TE

AM

P_M

UT

E

AG

C

GN

D

TU

1_A

FC

YS

2/A

FC

2

3D_L

ED

GN

D

EC

O_L

ED

TU

2_S

W1

TU

2_S

W0

TV

_LIN

K/C

OM

PU

LIN

K

KE

Y1

KE

Y2

KE

Y3

RE

MO

CO

N

H/P

_DE

TE

CO

TIM

ER

_LE

D

GN

D

SC

L1

SD

A2

RE

AD

Y

DAT

A

SD

A1

SC

L2

STA

TU

S

12V

GN

D

CLO

CK

IIC_F

RE

E

YS ST

BY

_5V

GN

D

PR

OT

EC

T

H_P

ULS

EV

_PU

LSE

GN

D

SD

A0

ST

BY

_5V

PO

WE

R

RC.V

G B GN

D

TAK

EO

FF

SC

L0

GN

D

GN

D

POWER & DEF PWB

GN

DG

ND

GN

DG

ND

3.3V

3.3V

A_M

+V

CC

A_M

-VC

CA

_M-V

CC

VD

-

V_P

RO

T

VS

H_P

RO

T

BS

O

GN

DG

ND

GN

D

PR

OT

EC

TS

TB

Y_5

V

P_O

N/O

FF

A_G

ND

A_G

ND

A_C

_VC

CA

_C_V

CC

GN

DG

ND

GN

D 5V 5V32V

GN

DG

ND

GN

DG

ND

AB

L

H_P

ULS

E

VD

+

EW

_DR

IVE

H_D

RIV

E

GN

D

GN

DL_

SU

B

L_O

UT

R_O

UT

GN

DG

ND

GN

D

GN

D

GN

D

ALC

GN

D

GN

D

GN

DA

_MU

TE

GN

D

SC

_YS

2

GN

D

GN

D

GN

D

GN

DG

ND

32V

5V5VTU

2_A

FC

TU

2_S

W1

TU

2_S

W0

RT

V1

LTV

1

TX

T_C

VC

V_A

/DS

PAS

DA

2S

CL2

9V9VPIP

_V

M_C

M_C

V/Y

AV

_LIN

K

CR

CB

YSC

_YS

1S

C_R

1S

C_G

1S

C_B

1

VT

V1

RG

BG

ND

GNDBGRVPROT

0

XBW

MA3051/M/-X*12

*1*2*3*4*5*6*7*8

: : : : :

: : : : : :

OPTION(NON MOUNT)IM-BWNRSA63J-0R0X2SC2412K/QR/-X2SA1037AK/QR/-XMA111-XMA3120/M/-XDTC124EKA-XDTA124EKA-X2SC1740S/QR/-T2SA933AS/QR/-T

NOTE

*9*10*11

MA3056/M/-XMA3036-XMA3240/M/-X

MAIN PWB(1/2)

SMF-1401A-U2(AV32H20EUS)

SMF-1402A-U2(AV28H20EUS)(AV28H20EUB)

1.6V

0V 0V 0V 0V 0V

0V

0V 0V 4.8V

3.8V

4.2V

0V 0V 8.9

V

3.6V

3.6V

3.1V 0V

3.6V

3.7V

0V 3.7V

4.4V

0V 4.4V

0V 0V 0V 4.9V

32V 4

.4V

4.4V 2V 1.9V

2.3V

0.2V

0V 0.8V

0V 7.9

V 3.1V

4.9V

0V 3.8V

4.2V

0V 0V 0V 0V 0V 0V 0V 0V 0V

0V 0.8V

0V 3.5V

1.9V

3.7V

4.8V

0V 0V 0.2V

3.7V

0.2V

3.7V

0.2V

3.7V

2.3V

3.7V

0V 1.3V

-1.1

V0V

0V 3.6V

3.6V

3.6V

3.5V

3.2V

3.1V

3.6V

4.9V 3

.3V

0V 3.3V

0V 3.4V

6V 3.3V

3V 3.1V

2.3V

7.2V 7.2V 6.4V 6.4V 5.9V 6V 5.6V 5.6V 12V

11V8.9V

11.4V 8V

4.9V 3.6V 3.6V 3.9V 0V 0V 0V 0V

0V0V

4.3V 0.1V

0V 7.9V3.4V3.1V3.2V1V0V3.1V0V3.1V 0.6V 0.6V 0.6V 0.8V

0V

3.1V

3.6V

3.5V

3.1V

2V

0V3.1V0.2V3.1V

0V

1.7V

2.3V

1.5V1.5V2.9V1.2V0.3V 1.1V0V3.1V 0V0.2V

3V

2.5V

1.5V

0V

2.5V

2.9V

1V

0.8V

3.1V

0.5V

0.5V

1V

0.5V

0V-0.1V

6.2V 2.9V 2.9V 0V 1.5V 1.5V 2V

AV32H20EUS

AV28H20EUS

AV28H20EUB

AV32H20EUS

AV28H20EUS

AV28H20EUB

No.51945 No.51945

5

*6Q607

5V

100/50C628

330R106

R008 0

.01C111

0Y688

10kR651

RT

V1

BB

E_B

OO

ST

X9V REGIC605

X-9V REGIC606

*2 MUTINGQ602

XC611

XC603

TA8246AHPOWER AMPIC601

10/5

0

C6291/50C616

1/50C618

XC617

10V

XC602

H/P

_R

VT

V1

.22/

50

80%

C63

0

XC605

0R646

.22/50

80% C642

XR638

R006

XCN00S

XC650

QNN0296-001J001

1000/35

QETM1VM-108

C648

1000/35QETM1VM-108

C649

X

80%C63

1

22/50C600

XY611

XY610

X

Y661

LTV

1

SD

A1

A.M

UT

E

BA4558F-XLPF

IC662

TU

1_A

FC

XY662

IC66227k

R601

H/P

_L

XD621

1/50

NC

F21

CZ

-105

X

Y612

SC

L1

AU

DIO

_MU

TE

*3D615

1/50

NC

F21

CZ

-105

X

Y613

AM

P_M

UT

E

AG

C

R_S

UB

2p

CH

C119

0Y608

XY606

XY607

L_S

UB

A_C

_VC

C

NQR0389-003XK101

NQR0389-003XK001

*3D617

27kR603

XCN008

47kR605

27kR606

*3D614

L/R

_CE

NT

15p

CH

C679

0Y603

2p

CH

C120

15pCHC678

0

Y604

XR632

100 100

RE

AD

Y

0

XC654

STA

TU

S

DAT

A

CLO

CK

XR633

XC626

PO

W_O

N/O

FF

X5V REG

IC664

XCHC612

XCHC622

0Y664

XC669

XC651

XC670

XC668

RL 8V

9V

XC653

XC652

1/1080%

C151

.22/5080%C632

X

80%

C63

3

.22/5080% C641

1/10

80%

C154

1/10

80%

C129

1/1080%

C152

.001

CH

C155

.001CHC156

.001 CHC123

.001CHC122

1/10

80%

C674

1/10

80%C673

1/10

80%

C680

1/10 80%C686

1/10 80%C153

BB

E_O

N/O

FF

10kR677

XY615

XR674

XR676

X R- BAS

S

BA

SS

R-

L- L-BA

SS

BA

SS

RO

UT

LOU

T

Vcc

SC

L

SD

A

L-T

RE

L-T

RE

BLE

BLE

L-IN

L-LO

UD

NE

SS

R-I

N

R-L

OU

DN

ES

S

CH

IP

VR

EF

GN

D

IC66

1

*C690

*2MUTING

Q615

XC

661

XC

663X

C662

*2POWER ON/OFF DET

Q601

XC664

XC665

XR662 X

R663

XR681

XR661

100kR644

6.8kR610

X

C671

XY614

XY663X

Y668

X

POWER BASS

IC665

0Y665

XC667

XC666

0R684

0R687

IC665

XC672

X

CH

C692

A_S

UB

_GN

D

XQ612

*C691

XR608

XC697

XD616

MS

P_R

ES

ET

XD613

100kR671

100kR670

XD609

XC696

XR682

18kR667

XR688

18kR669

47kR668

TU001

47kR666

150pCHC676

SMF-1401A-U2

150pCH

C677

47/25C675

10k

R664

10kR665

MUTINGDTC323TK-X

Q616

MUTINGDTC323TK-X

Q617

220/16C607

SMF-1402A-U2

QAU0276-001

XR695

DTC124EKA-XMUTING

Q605

*1MUTING

Q606

XR694

*1

10/50C130

QAU0276-001

*1

XR693

POWER BASSIC665

IC665

X

CH

C658

68p CHC108

X

XR659

XR696

XY616

0Y617

0Y621

X

XY620

Q101

NJM2150AM-X BBEIC663

22kR679

DTC124EKA-XMUTING

Q604

27kR680

.0033C684

.033/25

C685

XR648

10kR675

XY618

Y101

R009

2.2 1/2WQRK126J-2R2X

R649

R102

XR657

47/25C683

10k

R67

8

XR

SERVICE MANUAL - Freej.mdownload1.free.fr/Schemas/JVC/AV-32H20EUS_AV-28H20EUx...The high voltage...

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Transcript of SERVICE MANUAL - Freej.mdownload1.free.fr/Schemas/JVC/AV-32H20EUS_AV-28H20EUx...The high voltage...