JVC AV-21U4 Service Manual Download Page 31

Page: 31 / 46

(No.YA252)2-5

2-6(No.YA252)

Y_GND

C764

C766

C778

R101

L710

L711

L709

C765

C101

C753

C752

C751

R782

R004

R729

D101

C780

C750

C749

C748

L101

C746

R107

Y004

L716

D601

C721

IC601

SF101

L002

NECK

C615

R002

C107

SF102

R001

C004

IC801

C003

R766

R767

C001

C106

VER_PROTECT

R345

R778

C670

Y003

R670

C317

LC801

J801

Y802

J802

Y801

R801

K701

C779

C809

D813

Y981

C760

D603

Q760

R318

Q307

R320

R321

C316

Y713

C315

C313

R783

R779

C312

D706

C311

C310

C309

L303

R728

R726

R727

CN00T

C705

C757

C756

C718

C747

L706

C754

C755

R732

R733

R734

R735

L708

C758

C759

L707

X701

C709

C712

V_SHIFT

Q609

C761

C717

IC701

R005

C005

C706

R731

D708

R701

C710

C711

C762

R708

C763

R709

D701

R759

C713

R781

C714

C707

C708

R705

R703

R704

C716

C715

R706

R707

C719

C720

R780

TU001

CF101

C789

Q703

Y604

GND

C656

GND

K107

R604

R974

Y505

C603

C604

R606

R341

D604

R344

R343

D341

STB1

R602

R603

R611

C985

C111

R614

C986

IC976

R978

Q605

Y712

Q602

R610

C609

Q601

R609

R608

C607

C608

R623

R620

Q608

Q607

R621

C613

R624

R622

R616

D342

R810

GND

C802

GND

Y715

D805

R811

Q001

Q803

Q002

Q805

R814

R807

Q801

R808

R809

R802

D343

D344

L301

D345

CF702

R342

C341

Q341

Y303

C314

R319

Y006

Y005

R006

Y716

C302

C303

R309

R312

C305

C785

C304

3.3V_STB

R324

R325

R326

R327

GND

R823

D807

C806

C807

Y603

R790

LC701

Y702

Y703

R328

R322

R323

CN00C

D303

K102

K105

32V

L717

C308

C307

C306

R308

C110

R307

W-A

R310

Q305

Q306

X301

L302

IC301

J808

J807

AUDIO 2

VIDEO 2

Y302

L702

L701

L703

C702

C701

Y791

Q791

K301

12V

C777

R760

R761

CP650

Y705

Y706

J806

Q701

GND

Y008

BL_GND

K104

W-A1

Y708

Q704

R737

R738

Q705

Q308

IC302

Y709

Q706

GND

R756

D602

R626

C601

C742

R627

R625

CF701

Y701

R769

D801

W-B1

R793

R795

Q707

Q708

R796

D707

A_VCC

A_GND

Y973

R794

C804

R815

C792

Y301

Y711

Y102

VDRA+

VDRB-

Y101

H_DRIVE

P_ON/OFF

HFB

ABL

PROTECT

K106

GND

Y822

R822

Y824

Y103

Y104

Y105

D753

D751

Y718

Y720

D713

D808

R824

D809

R671

Q761

R672

R673

R629

Q762

R628

Y810

Y809

C805

Y811

J809

R630

R674

R675

R632

C671

Y760

D815

D814

R792

R821

R820

R819

R818

C793

S801

S802

S803

S804

S805

D816

C662

Y009

K801

Y106

Y107

STB_IN

CN00S

R817

R724

R825

R725

R722

IC974

C965

C722

C983

R753

Q101

L001

R105

R106

R104

C109

R108

C102

R102

R103

Q102

Q103

R798

C108

C103

C104

R110

C105

C740

C737

C006

C736

R755

R003

R109

C002

K103

R715

C723

R797

C728

L705

Y710

R710

C739

C738

C726

C729

C732

R741

R742

R744

R746

R747

R749

R751

R754

R771

R757

C703

C704

R736

C767

L712

C775

L715

L704

C731

C734

C730

C733

L713

C769

C768

R745

R743

R758

L714

C773

C774

D714

C771

C772

D709

C776

R750

C770

C602

R785

C784

C610

R007

R008

D001

Y007

R711

C781

C782

R762

R763

R764

R765

R712

C735

R752

D703

D702

D704

L003

C982

K101

R311

R314

R313

R315

R316

R317

R772

R777

IC702

R748

R784

R739

C743

W-B

D711

D712

C744

C745

R740

R776

C783

C791

R768

Y707

R773

C741

LC805

C727

Q702

R723

QQL244J-2R2Z

AN5279

QAX0325-001

QQR1114-001Z

QETN1CM-477Z

QAX0666-002

REMOTECON

RECEVER

RPM7238-H5

QNN0348-002

-OUT

QNN0348-002

QUY160-150Y

MA8036-X

QJL002-065631

QAX0799-001Z

/16

INSSW3

Uout/INSSW2

VssP2

VssC4

V1.8C4

V3.3A3

VrefP_Sdac

VrefN_Sdac

VrefP_Sdac

VrefN_Sdac

VrefP_Sdac

XtalIn

XtalOut

VssA1

NECK

CONT

V5P1

Ph2

Ph1

Gnd1

SecPll

Dec8G

VDRB-

VDRA+

Vif1

Vif2

Vsc

Iref

GndIF

Sif1

Sif2

AGC

EHT

SVM

FbiSo

Hout

VssComb

V5Comb

Vin/R2/Pr

Uin/B2/Pb

Yin/G2/Y

Ysync

Yout

R3/Pr

G3/Y

B3/Pb

Gnd3

V5P3

BCL

BLKIN

Rout

Gout

Bout

V3.3A1

RefAdN

V3.3RefAdP

RefAd

GndA

V1.8ADC

VssADC

V3.3A2

V1.8A

32V

LOCK

SDA

SCL

AGC

QAU0246-002

TUNER

QUY160-150Y

1/2W

MM1561JF-X

UN2226-X

QUY160-100Y

UN2226-X

1/2W

KTA1267/YG/-T

QUY160-075Y

1/2W

QGA2501F1-06

QUY160-150Y

QNN0281-002

DTC124ESA-T

QNN0281-003

QQR1114-001Z

SSM3K02F-X

1SS133-T2

NCB21HK-152X

QUY160-200Y

QUY160-125Y

QUY160-150Y

QUY160-200Y

QUY160-075Y

MA8039/H/-X

LH22440-T16

TIMER

LED( ORANGE)

LE22440-T16

QNS0197-001

1/2W

NCB21HK-152X

QSW0619-003Z

QQR0601-001Z

SCW

-1359A

SCW

-1361A

SCW

-1398A

C5-03Z

QGA2501

C5-04Z

QGA2501
C5-04Z

MM1561JF-X

2SC5397/CD/-T

QQR1114-001Z

SCLO

SDAO

P12/Int2

VssC3

V1.8C3

P25/PWM4

S_V_DET

L_OUT

DecsDem

QssO/AmO/AudeEm

Gnd2

PllIf

SifAgc

IfVo/FmRo/DvbO

V8AudioSwitches

AgcSsif

V5P2

V_OUT

Audio4InR

Audio2InL

Audio2InR

Cvbs2/Y

Audio3InL

Audio3InR

CVBS1

AudOutLsL

AudOutLsR

A_L

AudOutHpR

CVBSO/PIP

VssC1+P1

VDO_DET

KEY_IN

DecV1V8

V1.8C1

ECO_IN

PROT

4.5/OTHER

A_MUTE

3.58/OTHER

V_SHIFT

V3.3P

SDA1

SCL1

POWER

P00/I2SDI1

S_REDUCE

VER_PROTECT

TIMER

VssC2

V1.8C2

PW_LED

REMOTE

PW_LED

Ssif/RefIn/Avl/RefOut

MA8030/H/-X

QQL244J-4R7Z

QQR1114-001Z

ANALOG

DIGITAL

VSS

VCC

SCL

SDA

MA111-X

.22

47/16

100/16

.0047

1.2K

27K

47/16

220

.01

220

470/16

.01

27K

10/50

.22

10K

100

27K

560

560p

10/50

100

.22

100/16

.01

.22

.047

.0022

3.3K

12k

6800p

2.2/50

100/16

10k

.22

3.3K

10/50

4.7K

.022

100/16

39k

100

.001

220

22k

.01

.001

100K

47/50

100/50

10K

22K

10K

47/16

470/16

100K

3.3K

100K

33/16

27K

100/16

33K

10K

2.2K

10/50

68K

10K

390

10/50

82K

100K

100

220/16

100/16

1.2K

.22

100

3.3K

10K

2.2K

3.3/50

10/50

12K

220

100

100K

2.2K

470/16

120

12K

15K

8.2K

270

10K

270

470

330

220

180

560

10/16

1.2K

100

180

.0047

6.8K

2.7K

10K

.0047

47/25

33/16

.01

1.2K

3.9K

10/50

390

10/50

2.2/50

220

100

10k

100

220

4.7k

100

.22

10/50

.22

3.3k

2.2/50

22/50

.22

10/50

10K

10/50

2.2K

220

4.7K

100

4.7/50

2.2K

100

2.7K

1.2K

100

4.7K

3300p

SDA1

SCL1

P_ON/OFF

VDRA+

VDRB-

SCL0

PROTECT

1.8V

SDA0

L_OUT

NECK

V_OUT

CONT

3.58/OTHER

CONT

OFF_MUTE

CVBS1

CVBS1_GND

PROT

CVBSO/PIP_GND

SDA1

CVBSO/PIP

VER_PROTECT

CVBS1_GND

STB1

12V

STB1

V1.8A

A_VCC

NECK

SDA1

SCL1

P_ON/OFF

4.5/OTHER

A_GND

12V

STB1

V_SHIFT

VDRB-

VDRA+

1.8V

NECK

SCL0

SDA0

STB_IN

H_DRIVE

ABL

HFB

L_AOUT

L_OUT

A_L

A_MUTE

A_L

PW_LED

REMOTE

TIMER

Y_GND

A_MUTE

3.58/OTHER

SDA1

SCL1

H_DRIVE

HFB

12V

PROTECT

STB_IN

CVBS1

V_OUT

P_ON/OFF

ECO_IN

ABL

V_SHIFT

ECO_IN

PROT

A_VCC

CVBSO/PIP

CVBSO/PIP_GND

OFF_MUTE

PW_LED

KEYIN

VER_PROTECT

1.8V

ABL

V1.8A

1.8V

4.5/OTHER

KEYIN

GND

A_GND

L_AOUT

TIMER

SVM

MAIN PWB ASS'Y (1/2)
SCW-1398A-H2 [AV-21U4/SK]

NOTE) 1.Refer to the part list for the part number of IC701 and IC702.

2.Refer to page 2-13 for voltages of this circuit diagram.

3.Refer to page 2-14 for waveforms of this circuit diagram.

MAIN MICRO COMPUTER/
IF VIDEO RGB SYNC DEF. PROCESS

POWER LED
(RED)

SPEAKER

AUDIO AMP

VIDEO-2

INPUT

VIDEO-1
INPUT

OUTPUT

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM (1/2)

CRT SOCKET ASS'Y

CN10T

Summary of Contents for AV-21U4

Page 1: ...ctor Company of Japan Limited No YA252 2005 3 COLOUR TELEVISION YA252 2005 3 AV 21U4 SK TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 4 3 DISASSEMBLY 1 6 4 ADJUSTMENT 1 12 5 TROUBLESHOOTING 1 25 BASIC CHASSIS CW ...

Page 2: ...Hz PAL 4 40MHz 4 25MHz SECAM 3 58MHz 4 43MHz NTSC Aerial Input Terminal 75Ω unbalanced coaxial Power Input AC110V AC240V 50Hz 60Hz Power Consumption 81W Max 57W Avg Picture Tube A51KQK99X01 21 inch aspect ratio 4 3 convetional square face type tinted Screen Size Visible size 50 5cm Diagonal 40 4cm 30 3cm H V High Voltage 26 5kV 1 5kV at zero beam current Speaker 5cm 9cm Oval type 2 Audio Output 3W...

Page 3: ...ments or alternatives approved by the manufacturer of the complete product 7 Do not check high voltage by drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10kΩ 2W resistor to the anode button 8 When service is requ...

Page 4: ... AUTO PROGRAM the TV stations can be selected automatically and the TV channels can also be rearranged automatically Built in OFF TIMER RETURN 2 2 FUNCTIONS REMOTE CONTROL UNIT RM C1261 2H 1 4 5 3 2 6 7 8 9 11 10 1 2 3 4 5 6 7 8 9 10 SOUND SYSTEM key COLOUR SYSTEM key FAVORITE CHANNEL keys DISPLAY BACK key PICTURE MODE key OFF TIMER key RETURN key TV VIDEO key Not used PICTURE BOOSTER key MENU key...

Page 5: ...I Audio R2 input right signal 58 Y3 Cvbs I S Video Y1 input 59 C1 I S Video C1 input 60 AudioLsL O Audio L output for audio power amplifier 61 AudioLsR O Audio R output for audio power amplifier 62 HP L O Headphone L 63 HP R O Headphone R 64 CVBSO PIP O CVBS PIP output 65 SVM O Scan velocity modulation output 66 FbiSo I Flyback input sandcastle output 67 Hout O Horizontal output 68 VssComb GND 69 ...

Page 6: ...HE SPEAKER Remove the REAR COVER 1 Remove the 2 screws C as shown in Fig 1 3 1 4 CHECKING THE MAIN PW BOARD To check the back side of the MAIN PWB 1 Pull out the MAIN PWB Refer to REMOVING THE MAIN PW BOARD 2 Erect the MAIN PWB vertically so that you can easily check its back side CAUTIONS Before turning on power make sure that the CRT earth wire and other connectors are properly connected When re...

Page 7: ... No YA252 1 7 Fig 1 MAIN PWB SPEAKER C REAR COVER A B CRT SOCKET PWB FRONT CABINET PICTURE TUBE FBT x2 x5 x2 ...

Page 8: ... whether the setting values of the SYSTEM CONSTANT SET are the same as those indicated in Table 1 If the value is different select the setting item with the MENU key and set the correct value with the MENU key 4 Press the DISPLAY key twice to return to the normal screen 5 Receive channel setting Refer to the OPERATING INSTRUCTIONS and set the receive channels channels preset 6 User setting Check t...

Page 9: ...CK MUTE COLOUR AUTO ECO SENSOR SURROUND PICTURE BOOSTER COMPONENT PIP S INPUT TRIPLE NO NO NO MONO NO NO NO NO NO NO NO NO Setting item Setting content Setting value YES NO YES NO YES NO YES NO YES NO YES NO YES NO STEREO PB MONO YES NO YES NO YES NO YES NO YES NO SINGLE NO PAT MULTI TRIPLE PAL THAI E R C M I E C E R C M I NO LANGUAGE NO ...

Page 10: ...ORITE CH RED PR01 FAVORITE CH GREEN PR02 FAVORITE CH YELLOW PR03 FAVORITE CH BLUE PR04 Setting item Setting value 1 IF 1 VCO 2 DELAY POINT 2 V C 1 SCREEN DATA 2 CUTOFF B G 3 WDR R G B 4 BRIGHT TV VDO 1 2 5 CONT TV VDO 1 2 6 COLOUR TV VDO1 2 7 TINT TV VDO 1 2 8 SHARP Do not adjust 9 Y DELAY Do not adjust 10 TINT DVD Do not adjust 11 AMP T SHARP 3 AUDIO Do not adjust 1 DCXO ADJ 2 NICAM lower ERRLIM ...

Page 11: ...the tweezers and remove the chip part Transistors diodes variable resistors etc 1 Apply extra solder to each lead 2 As shown in the figure push the part with tweezers and alternately melt the solder at each lead Shift and remove the chip 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 i...

Page 12: ...mer capacitors etc 4 2 PRESETTING BEFORE ADJUSTMENT Unless otherwise specified in the adjustment instructions preset the following functions with the remote control unit User mode setting position 4 3 MEASURING INSTRUMENT AND FIXTURES 1 DC voltmeter or Digital voltmeter 2 Oscilloscope 3 Signal generator Pattern generator PAL SECAM NTSC 4 Remote control unit 4 4 ADJUSTMENT ITEMS B1 VOLTAGE FOCUS AD...

Page 13: ...AY2 4 X RAY1 5 GND UPPER FOCUS DEF YOKE IC702 MAIN PWB ASS Y CRT SOCKET T 6 1 4 1 FRONT HVT MAIN PWB ASS Y 1 6 1 4 1 1 4 5 X 1 6 C U LOWER SCREEN TU001 S901 S805 S803 S801 S804 S802 J807 J806 J801 J802 IC701 CN00S T PW DEG POWER CORD TP E E1 TP 47B POWER SW TP 47R CN00C 1 5V 2 SCL0 3 SDA0 4 SCL1 5 SDA1 6 GND I2 C GND 5V GND B1 ...

Page 14: ...entering adjusting the setting values adjustment values of the IF circuit 2 V C For entering adjusting the setting values adjustment values of the VIDEO circuit 3 AUDIO For entering adjusting the setting values adjustment values of the AUDIO circuit 4 DEF For entering adjusting the setting values adjustment values of the DEFLECTION circuit 5 VSM W B For setting the values of STANDARD SOFT BRIGHT a...

Page 15: ...VD 11 AMP T SHARP 3 AUDIO PAL 1 SCREEN HBC WBC BRI V C 000A 0002 0009 5 VSM W B 1 BRIGHT VSM PRESET BRIGHT 4 DEF 1 V SHIFT DEF FULL 50Hz 1 BRIGHT 2 CONT 3 COLOUR 4 SHARP 5 HUE 1 R DRIVE 2 G DRIVE 3 B DRIVE Setting item 1 V SHIFT 2 V SLOPE 3 V SIZE 4 H CENT 5 H SIZE 6 TRAPEZ 7 EW PIN 8 COR UP 9 COR LO 10 ANGLE 11 BOW 12 V S CR 13 V LIN 14 V ZOOM 15 V SCROLL Setting item 1 IF 3 AUDIO 5 VSM W B 7 PLU...

Page 16: ...3 Make sure that the picture is in focus even when the screen gets darkened Item Measuring instrument Test point Adjustment part Description IF VCO check Remote control unit 1 IF 1 VCO CW Note Under normal conditions no adjustment is required 1 Receive a broadcast signal 2 Select 1 IF from the SERVICE MENU 3 Select 1 VCO 4 Check the characters colour of the JUST REFERENCE displayed to yellow 5 Pre...

Page 17: ...fixed offset values needing no further adjustment Adjustment item Variable range Initial setting value PAL SECAM NTSC3 58 NTSC4 43 1 SCREEN BRI 0 63 32 32 32 32 2 CUTOFF B 0 63 11 11 11 11 G 0 63 7 7 7 7 3 WDR R 0 63 32 32 32 32 G 0 63 32 32 32 32 B 0 63 45 45 45 45 4 BRIGHT RF 0 63 39 39 VIDEO 1 32 31 4 4 4 4 VIDEO 2 32 31 4 4 4 4 5 CONT RF 0 63 32 32 VIDEO 32 31 2 2 2 2 6 COLOUR RF 0 63 32 31 42...

Page 18: ...ess the DISPLAY key twice to return to the normal screen WHITE BALANCE High light adjustment Signal generator Remote control unit 2 V C 3 WDR R 3 WDR G 3 WDR B Notes Proceed to the following adjustment after having completed the WHITE BALANCE Low light adjustment Set PICTURE MODE VSM to BRIGHT 1 Receive a PAL black and white signal colour off 2 Select 2 V C from the SERVICE MENU 3 Select 3 WDR R G...

Page 19: ...ast 6 Press the DISPLAY key twice to return to the normal screen SUB COLOUR 1 adjustment Remote control unit 2 V C 6 COLOUR Method of adjustment without measuring instrument Notes Proceed to the following adjustment after having completed the SUB CONTRAST adjustment Set PICTURE MODE VSM to BRIGHT PAL COLOUR 1 Receive a PAL broadcast 2 Select 2 V C from the SERVICE MENU 3 Select 6 COLOUR 4 Set the ...

Page 20: ...o select the NTSC 3 58 colour system 3 Set the initial setting value of NTSC 3 58 COLOUR 4 Adjust NTSC 3 58 COLOUR to set the value A in the figure to 3V NTSC 4 43 COLOUR When adjustment is done for NTSC 3 58 COLOUR appropriate values are automatically set for NTSC 4 43 COLOUR SUB TINT 1 adjustment Signal generator Remote control unit 2 V C 7 TINT Method of adjustment without measuring instrument ...

Page 21: ... colour bar 75 white 2 Press the COLOUR SYSTEM key to select the NTSC 3 58 colour system 3 Select 2 V C from the SERVICE MENU 4 Select 7 TINT 5 Set the initial setting value of NTSC 3 58 6 Connect the oscilloscope between TP 47G and TP E 7 Adjust NTSC 3 58 TINT to set the value B in the figure to 3V 8 Press the DISPLAY key twice to return to the normal screen NTSC 4 43 TINT When adjustment is done...

Page 22: ...1 32 0 12 V S CR 0 63 32 31 32 0 13 V LIN 0 63 32 31 32 0 14 V ZOOM 0 63 32 31 30 0 15 V SCROLL 0 63 32 31 32 0 Item Measuring instrument Test point Adjustment part Description V SLOPE adjustment Signal generator Remote control unit 4 DEF 2 V SLOPE PAL V SLOPE 1 Receive a PAL circle pattern signal of vertical frequency 50Hz 2 Select 4 DEF from the SERVICE MENU 3 Select 2 V SLOPE 4 Set the initial ...

Page 23: ... 13 V LIN 5 Set the initial setting value of 13 V LIN 6 Adjust 12 V S CR and 13 V LIN so that the spaces of each line on TOP CENTRE and BOTTOM become uniform NTSC V LINEARITY 1 Input a NTSC crosshatch signal 2 Make similar adjustment of NTSC V S CR in the same way as for PAL V S CR H PARALLEL adjustment Signal generator Remote control unit 4 DEF 10 ANGLE PAL H PARALLEL 1 Receive a PAL crosshatch s...

Page 24: ... DRIVE 3 B DRIVE 1 Select 5 VSM W B from the SERVICE MENU 2 Select BRIGHT with the MENU OK key 3 Set the value of 1 BRIGHT 5 HUE to the values shown in the table 4 Respectively select the VSM PRESET mode for SOFT and STANDARD 5 Select COOL with the MENU OK key 6 Set the values of 1 R DRIVE 3 B DRIVE to the value shown in the table 7 Select the W B preset for WARM and NORMAL respectively 8 Press th...

Page 25: ...Method of detection State of abnormality B1 over current protection An over current on the low B1 line is detected The main microcomputer detects the possible abnormality at 24 msec intervals and judges the results in every 16 time Of the 16 times if NG is detected more than 9 times it is judged that there is an abnormality When an abnormality has been detected the SUB POWER is turned off While th...

Page 26: ... No YA252 AV MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12 3 chome Moriya cho kanagawa ku Yokohama kanagawa prefecture 221 8528 Japan Victor Company of Japan Limited VPT Printed in Japan ...

Page 28: ...pply Type MM Metalized mylar capacitor PP Polypropylene capacitor MPP Metalized polypropylene capacitor MF Metalized film capacitor TF Thin film capacitor BP Bipolar electrolytic capacitor TAN Tantalum capacitor 3 Coils No unit Others µH As specified No indication Ceramic capacitor 2 Capacitors Capacitance value 1 or higher pF less than 1 µF Withstand voltage No indication DC50 V Others DC withsta...

Page 29: ... CIRCUIT DIAGRAM 2 9 PATTERNDIAGRAMS MAIN PWB PATTERN CRT SOCKET PWB PATTERN 2 11 VOLTAGECHARTS 2 13 WAVEFORMS 2 14 IC BOTTOM VIEW FRONT VIEW TOP VIEW 1 N N 1 OUT E IN IN OUT E 1 N TOP VIEW 1 N 1 N CHIP IC TRANSISTOR BOTTOM VIEW FRONT VIEW TOP VIEW CHIP TR E C B E C B C B E B G E S C D E C B E C B 2 2 No YA252 P W BOARD ASS Y NAME AV 21U4 SK MAIN P W BOARD SCW 1398A H2 CRT SOCKET P W BOARD SCW 301...

Page 30: ...KER R J809 HEADPHONE CRT SOCKET PWB R G B V01 IC351 RGB OUT V H DY01 DEF YOKE 1 8V V1 8V IC702 MAIN MEMORY 29 30 SIF IN VIF IN SIF DETECT VIDEO IDENT AUDIO CONTROL COMB FILTER Y DELAY ADJ COLOUR DEMOD SYNC SEP H DRIVE VIF DETECT AGC AFT SOUND TRAP DIGITAL SIGNAL PROCESS PEAKING SCAN VELOCITY MOD U V DELAY RGB MATRIX GAMMA AUDIO SELECT VIDEO SELECT I O PORT AUDIO SELECT V1 V3 L1 L3 VOUT QSSO AMO 24...

Page 31: ...R QUY160 150Y 1 2W MM1561JF X UN2226 X QUY160 100Y D G S UN2226 X D G S 1 2W KTA1267 YG T QUY160 075Y CH CH 1 2W QGA2501F1 06 QUY160 150Y QUY160 150Y QNN0281 002 DTC124ESA T QNN0281 003 QQR1114 001Z D G S SSM3K02F X D G S SSM3K02F X 1SS133 T2 NCB21HK 152X QUY160 200Y QUY160 125Y QUY160 150Y QUY160 150Y QUY160 200Y QUY160 075Y MA8039 H X LH22440 T16 TIMER LED ORANGE LE22440 T16 QNS0197 001 1 2W 1 2...

Page 32: ...SZ QFZ9077 104 QRL039J 221 FBT QQH0170 001 1 2W Vcc Vcc PUMP UP THERMAL PROTECTION AMP LA78040N QGA2501F1 05 QRL029J 223 MA8330 M X 1SS133 T2 1 2W MTZJ16C T2 RGP10J 5025 T3 1 2W MA8051 L X QUY160 100Y 1 2W QCZ0364 681 MA8075 H X QRE121J 6R8Y QRE121J 471Y QRF104K 3R9 QCZ9015 102Z QCZ9015 102Z MA8051 M X OMF2 QQS0272 001 MA8200 M X QUY160 100Y QUY160 050Y QRZ0107 474Z QAF0060 621 QSW1041 001 QMF51E2...

Page 33: ...0536 001 QNZ0536 001 QRZ0111 152 QRZ0111 152 QRZ0111 152 QGA2501C5 06 QRE122J 104 1 2W QQR1113 001Z SCW 3012A SCW 3013A QRE122J 222 QRE122J 222 QRE122J 222 1 4W 1 4W 1 4W 1 4W QFKC2EK 104Z QQL244J 5R6Z MTZJ7 5B T3 CH41005 H 5C CH41005 H 5C CH41005 H 5C CH41005 H 5C X X X X 4 7 250 X X X X X X X X X X X X X X X 100 150 150 150 X X 1000p X 9 9 9 6 X x NOTE 1 Refer to page 2 13 for voltages of this c...

Page 34: ...195 W078 92 R7 Q706 R569 IC801 HS401 Y718 W114 R711 W188 W158 R722 R723 R724 W053 R725 W057 W058 CL001 Q702 CF101 X301 C302 C303 R309 W003 R312 C305 C304 W0 36 C306 W038 C307 C309 07 R3 R308 R310 K921 K922 R931 R311 CN0E5 TH901 R313 W022 J806 R314 W028 Q305 Q306 R528 SF101 84 W0 C925 R933 W103 W087 C909 R520 W092 SF102 W094 W095 K301 IC401 C310 L301 L302 L303 R921 W105 R903 R315 R316 R317 C311 C31...

Page 35: ... 3 1 2 3 1 3 0 1 IC921 1 288 4 3 0 4 0 5 31 8 6 3 6 7 0 9 IC972 1 1 3 2 0 3 3 3 IC973 1 14 2 2 11 9 3 0 4 3 2 IC974 1 1 8 2 0 3 0 4 0 5 5 2 9 6 0 7 3 2 IC975 1 5 2 2 5 0 3 0 4 3 3 IC976 1 1 8 2 0 3 0 4 0 5 5 3 0 6 0 7 3 2 Q101 E 2 2 C 11 6 B 3 0 Q521 E 0 C 8 9 B 0 Q522 E 0 C 112 0 B 0 1 Q571 E 115 3 C 0 B 114 8 Q572 E 0 C 3 2 B 0 Q601 E 8 1 C 0 2 B 8 2 Q602 E 0 2 C 0 2 B 0 Q605 E 0 C 2 3 B 0 2 Q60...

Page 36: ... No YA252 AV MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12 3 chome Moriya cho kanagawa ku Yokohama kanagawa prefecture 221 8528 Japan Victor Company of Japan Limited VPT Printed in Japan ...

Page 37: ...pacitor MF R Metal Film Resistor MF CAP Metalized Film Capacitor MG R Metal Glazed Resistor MM CAP Metalized Mylar Capacitor MP R Metal Plate Resistor MP CAP Metalized Polystyrol Capacitor OM R Metal Oxide Film Resistor PP CAP Polypropylene Capacitor CMF R Coating Metal Film Resistor PS CAP Polystyrol Capacitor UNF R Non Flammable Resistor TF CAP Thin Film Capacitor CH V R Chip Variable Resistor M...

Page 38: ... LIST 1 3 3 EXPLODED VIEW 1 3 3 EXPLODED VIEW PARTS LIST 2 3 4 EXPLODED VIEW 2 3 5 PRINTED WIRING BOARD PARTS LIST 3 6 MAIN P W BOARD ASS Y SCW 1398A H2 3 6 CRT SOCEK P W BOARD ASS Y SCW 3013A H2 3 9 REMOTE CONTROL UNIT PARTS LIST RM C1261 2H 3 9 PACKING 3 10 PACKING PARTS LIST 3 10 ...

Page 39: ...DED VIEW 1 P W B ASS Y AV 21U4 SK MAIN P W B SCW 1398A H2 CRT SOCKET P W B SCW 3013A H2 REMOTE CONTROL UNIT RM C1261 2H Ref No Part No Part Name Description Local 1 LC10156 006A HK FRONT CABINET 2 CM47783 003 H JVC MARK 3 LC30337 002A H CONTROL KNOB 4 LC32676 001A H LED LENS 1 3 4 2 ...

Page 40: ...x 16mm x5 12 QYSBSF3010ZA TAP SCREW M3 x 10mm x2 13 LC10157 004A HK REAR COVER 14 CM48144 004 H PB STOPPER 15 LC32677 001A H PW CORD CLAMP 16 QMPR340 165 K2 POWER CORD 1 65m BLACK 17 LC30336 003A H POWER KNOB 18 A48457 3 H SPRING 19 CHGB0016 0B FH BRAIDED WIRE 20 QYSBSFG4016ZA TAP SCREW M4 x 16mm x2 21 QAS0054 001 SPEAKER SP01 22 GG20024 001B H RATING LABEL 30 SCW 1398A H2 MAIN BOARD ASSY 31 SCW 3...

Page 41: ... No YA252 3 5 EXPLODED VIEW 2 MAIN PWB 19 21 20 14 13 22 11 12 30 CRT SOCKET PWB FRONT CABINET 31 16 15 17 L01 V01 T522 18 ...

Page 42: ...R124 400A T2 SI DIODE D981 1SS133 T2 SI DIODE C001 NCB31HK 103X C CAPACITOR 0 01uF 50V K C002 QETN1HM 106Z E CAPACITOR 10uF 50V M C003 NCB31CK 104X C CAPACITOR 0 1uF 16V K C004 QETN1CM 477Z E CAPACITOR 470uF 16V M C005 NCB31HK 222X C CAPACITOR 2200pF 50V K C006 QETN1CM 336Z E CAPACITOR 33uF 16V M C101 NCB31HK 472X C CAPACITOR 4700pF 50V K C102 NCB31HK 472X C CAPACITOR 4700pF 50V K C103 NCB31HK 472...

Page 43: ...0uF 16V M C958 QETN1VM 337Z E CAPACITOR 330uF 35V M C960 QETM1VM 228 E CAPACITOR 2200uF 35V M Ref No Part No Part Name Description Local C962 NCB31CK 104X C CAPACITOR 0 1uF 16V K C963 NCB31HK 102X C CAPACITOR 1000pF 50V K C964 QETN1VM 107Z E CAPACITOR 100uF 35V M C965 NCB31CK 104X C CAPACITOR 0 1uF 16V K C967 QETN1CM 476Z E CAPACITOR 47uF 16V M C968 QETN1CM 476Z E CAPACITOR 47uF 16V M C975 QETN1CM...

Page 44: ...SISTOR 10kΩ 1 16W J R790 NRSA63J 102X MG RESISTOR 1kΩ 1 16W J R791 QRE121J 471Y C RESISTOR 470Ω 1 2W J R793 NRSA63J 101X MG RESISTOR 100Ω 1 16W J R794 NRSA63J 222X MG RESISTOR 2 2kΩ 1 16W J R795 NRSA63J 104X MG RESISTOR 100kΩ 1 16W J R796 NRSA63J 0R0X MG RESISTOR 0Ω 1 16W J R797 NRSA63J 102X MG RESISTOR 1kΩ 1 16W J Ref No Part No Part Name Description Local R798 NRSA63J 103X MG RESISTOR 10kΩ 1 16W...

Page 45: ... LED HOLDER Ref No Part No Part Name Description Local IC351 TDA6107AJF N1 IC D350 MTZJ7 5B T3 Z DIODE D351 EU01N T3 SI DIODE D354 RGP10J 5025 T3 SI DIODE D355 RGP10J 5025 T3 SI DIODE D356 RGP10J 5025 T3 SI DIODE C351 QCB32HK 102Z C CAPACITOR 1000pF 500V K C352 QETM2EM 475 E CAPACITOR 4 7uF 250V M C353 QFKC2EK 104Z MM CAPACITOR 0 1uF 250V K C358 QCZ0131 821 C CAPACITOR 820pF 2kV K R351 QRE142J 101...

Page 46: ...al 1 GG10281 008A H PACKING CASE 2 LC10158 005B H CUSHION ASSY 4pcs in 1set 3 GG30097 003A H POLY BAG 4 GG30096 001A H POLY BAG 5 BATTERY AA R6 x2 6 GGT0047 001C H INST BOOK 7 BT 54012 4H WARRANTY CARD 8 RM C1261 2H REMOCON UNIT 9 GG20025 005A H CORNER LABEL x2 3 5 6 7 4 8 2 9 9 1 2 ...

Search results

Summary of Contents for AV-21U4

Reviews:

Related manuals for AV-21U4

Brands by name

Popular brands

JVC AV-21U4, Service Manual

Search results

Summary of Contents for AV-21U4

Reviews:

Related manuals for AV-21U4

Brands by name

Popular brands