JVC AV-21VT14/P Service Manual
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JVC AV-21VT14/P Service Manual

JVC AV-21VT14/P Service Manual

Flat colour television basic chassis cw
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SERVICE MANUAL
FLAT COLOUR TELEVISION
9
2004
YA140
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
AV-21VT14
AV-21VT34

TABLE OF CONTENTS

COPYRIGHT © 2004 Victor Company of Japan, Limited
,
/P
/P
BASIC CHASSIS
CW
No.YA140
2004/9

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  • Page 1: Table Of Contents

    SERVICE MANUAL FLAT COLOUR TELEVISION YA140 2004 AV-21VT14 AV-21VT34 BASIC CHASSIS TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Contents Items AV-21VT14/P AV-21VT34/P Dimensions (W × H × D) 64.9cm × 46.55cm × 47.35cm Mass 24kg 26.4kg TV RF System Colour System TV Mode NTSC3.58 Video Mode PAL / SECAM / NTSC3.58 / NTSC4.43 Stereo System MTS (Multi-Channel Television Sound)

  • Page 3: Precaution

    SECTION 1 PRECAUTION SAFETY PRECAUTIONS (1) The design of this product contains special hardware, (8) When service is required, observe the original lead dress. many circuits and components specially for safety Extra precaution should be given to assure correct lead purposes.

  • Page 4: Specific Service Instructions

    In accordance with the brightness in a room, the brightness and/or contrast of the picture can be adjusted automatically to make the optimum picture which is easy on the eye. • Built-in OFF TIMER & RETURN +. MAIN DIFFERENCE LIST Items AV-21VT14/P AV-21VT34/P BASS BLASTER None BASS BLASTER UNIT...
  • Page 5 FUNCTIONS REMOTE CONTROL UNIT RM-C1282-2H COLOUR SYSTEM key ECO key FAVORITE CHANNEL keys POWER key DISPLAY BACK key TV / VIDEO key MENU ( / , / ) keys MENU (OK) key CLOSED CAPTION key MUTING key SOUND TURBO key Number keys 100+ key PICTURE MODE key...
  • Page 6 REAR TERMINAL [AV-21VT14/P] VIDEO-1 INPUT TERMINAL S-VIDEO 10 11 VIDEO AUDIO L/MONO AUDIO R COMPONENT VIDEO-1 (VIDEO-2) OUTPUT INPUT INPUT COMPONENT (VIDEO-2) INPUT TERMINAL Y/VIDEO OVER AUDIO L/MONO AUDIO R / MONO MONO OUTPUT TERMINAL VIDEO AUDIO L AUDIO R...
  • Page 7 MAIN CPU [MAIN PWB : IC701] PIN FUNCTION Pin no. Pin name Remark Pin no. Pin name Remark CVBSO/PIP O CVBS / PIP output VssP2 O Scan velocity modulation output VssC4 FbiSo Flyback input/sandcastle output V1.8C4 1.8V (Digital) Hout O Horizontal output V3.3A3 3.3V VssComb...

  • Page 8: Disassembly

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE 3.1.1 REMOVING THE TWIN PORT BASS BLASTER UNIT [AV-21VT34/P] • Unplug the power supply cord. (1) Disconnect the TWIN PORT BASS BLASTER UNIT’s cord from the rear of the TV set. (2) Remove the TWIN PORT BASS BLASTER UNIT by pulling it upwards.
  • Page 9 FRONT CABINET PICTURE TUBE (x2) SPEAKER MAIN PWB (CRT SOCKET PWB) MAIN PWB (x2) SPEAKER BASS SPEAKER OUT JACK [AV-21VT34/P] TWIN PORT BASS BLASTER UNIT [AV-21VT34/P] (x9) REAR COVER (x4) Fig.1 (No.YA140)1-9...
  • Page 10 REPLACEMENT OF MEMORY IC 3.2.1 MEMORY IC This TV uses the following memory IC. SERVICE MENU Memory IC: IC702 on MAIN PWB The memory IC memorizes data for correctly operating the video and deflection circuits. When replacing the memory IC, be sure SERVICE MENU to use the same type IC written with the initial values of data.
  • Page 11 3.2.3 FACTORY SETTING VALUE SETTING OF SYSTEM CONSTANT SET Setting value Setting item Setting content AV-21VT14/P AV-21VT34/P TAIWAN OTHERS SYSEM OTHERS COMB TILT SUPER BASS STEREO MONO SOUND STEREO BLUE BACK MUTE ECO SENSOR SURROUND PICTURE BOOSTER COMPONENT S INPUT Table 1 (No.YA140)1-11...
  • Page 12 SETTING OF BASIC FUNCTIONS SERVICE MENU SETTING ITEMS Setting item Setting value Setting item Setting value POWER 1. IF 1. VCO 2. DELAY POINT SUB POWER 2. V/C 1. SCREEN VOLUME 2. CUTOFF(B/G) COLOR SYSTEM NTSC 3. WDR(R/G/B) 4. BRIGHT(TV/VDO 1/2/3) SOUND SYSTEM 5.
  • Page 13 REPLACEMENT OF CHIP COMPONENT 3.3.1 CAUTIONS (1) Avoid heating 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. 3.3.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it.

  • Page 14: Adjustment

    SECTION 4 ADJUSTMENT ADJUSTMENT PREPARATION (1) You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment equipment and parts as given below. (2) Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting values used for setting the screen to its optimum condition may differ from the initial settings.
  • Page 15 ADJUSTMENT LOCATIONS MAIN PWB ASS'Y S804 S802 J808 J807 J806 J809 S805 S803 S801 FRONT POWER SW S901 CN00S POWER CORD IC702 DEG COIL IC701 YOKE J801 J802 J803 J804 CN00C CN00C CN00X TU001 UPPER : FOCUS 1. 5V 1. B1 2.
  • Page 16 BASIC OPERATION IN SERVICE MENU Operate the SERVICE MENU with the remote control unit. 4.6.1 SERVICE MENU ITEMS With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classified in the following items of settings: 1. IF For entering/adjusting the setting values (adjustment values) of the IF circuit.
  • Page 17 4.6.3 SERVICE MENU FLOW CHART 1. IF SERVICE MENU SERVICE MENU IF SERVICE MENU 1. IF 2. V/C VCO (CW) ***** 3. AUDIO 4. DEF TOO HIGH 5. VSM W/B 6. STATUS 1. VCO ABOVE REFERENCE 7. PLUG & PLAY (ON) JUST REFERENCE 2.
  • Page 18 ADJUSTMENT PROCEDURE 4.7.1 B1 VOLTAGE Measuring Item Test point Adjustment part Description instrument B1 VOLTAGE Signal B1 (pin 1) (1) Receive a black and white signal. check generator GND (pin 5) (2) Connect a DC voltmeter between B1 and GND [CN00X (between pins 1 and 5 of the connector CN00X).
  • Page 19 4.7.4 VIDEO CIRCUIT ADJUSTMENTS • 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. •...
  • Page 20 Measuring Item Test point Adjustment part Description instrument WHITE Signal [2. V/C] Notes: BALANCE generator 3. WDR (R) • Proceed to the following adjustment after having (High light) 3. WDR (G) completed the WHITE BALANCE (Low light) adjustment. adjustment Remote 3.
  • Page 21 Measuring Item Test point Adjustment part Description instrument SUB COLOUR 1 Remote [2. V/C] [Method of adjustment without measuring instrument] adjustment control unit 6. COLOUR 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.
  • Page 22 - NTSC 4.43 TINT - When adjustment is done for NTSC 3.58 TINT, appropriate values are automatically set for NTSC 4.43 TINT. 4.7.5 AUDIO SETTING This submenu is for display only, no adjustment is required. [AV-21VT14/P] Function Item 100Hz 300Hz...
  • Page 23 4.7.6 DEFLECTION CIRCUIT ADJUSTMENTS • 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. •...
  • Page 24 Measuring Item Test point Adjustment part Description instrument V. HEIGHT Signal [4. DEF] - PAL V. HEIGHT - adjustment generator 3. V-SIZE (1) Receive a PAL crosshatch signal. 14. V-ZOOM (2) Select 3. V-SIZE. Remote (3) Set the initial setting value of 3. V-SIZE. control unit (4) Select 14.
  • Page 25 Measuring Item Test point Adjustment part Description instrument H. PARALLEL Signal [4.DEF] - PAL H. PARALLEL - adjustment generator 10. ANGLE (1) Receive a PAL crosshatch signal. (2) Select 10. ANGLE. Remote (3) Set the initial setting value of 10. ANGLE. control unit (4) Adjust 10.
  • Page 26 COMPRESS : ON (16:9) Measuring Item Test point Adjustment part Description instrument V. HEIGHT Signal [4.DEF] - PAL V. HEIGHT - adjustment generator 14. V. ZOOM (1) Receive a PAL crosshatch signal of vertical 3. V-SIZE frequency 50Hz. Remote (2) Press the [MENU] key and select PICTURE. control unit (3) Select PICTURE FEATURES.
  • Page 27 VIDEO - 2 SET: COMPONENT Measuring Item Test point Adjustment part Description instrument H. POSITION Signal [4. DEF] (1) Receive a PAL circle pattern signal to VIDEO-2 adjustment generator 4. H-CENT component terminal. (2) Select VIDEO-2 SET from the MENU and set Remote VIDEO-2 SET to COMPONENT.
  • Page 28 4.7.8 PURITY AND CONVERGENCE PURITY ADJUSTMENT Note: The final adjustment of CONVERGENCE must be done after WEDGE DEFLECTION the FOCUS adjustment. (CONVERGENCE is changed by YOKE FOCUS adjustment.) When makes difference by FOCUS adjustment, should be reconfirming PURITY adjustment. (1) Demagnetize CRT with the demagnetizer. P / C (2) Loosen the retainer screw of the deflection yoke.
  • Page 29 STATIC CONVERGENCE ADJUSTMENT (1) Input a crosshatch signal. (2) Using 4-pole convergence magnets, overlap the red and blue lines in the centre of the screen (Fig.1) and turn them (FRONT VIEW) to magenta (red/blue). (3) Using 6-pole convergence magnets, overlap the magenta (red/blue) and green lines in the centre of the screen and turn them to white.

  • Page 30: Troubleshooting

    SECTION 5 TROUBLESHOOTING SELF CHECK FUNCTIONS 5.1.1 OUTLINE This model has self check functions given below. When an abnormality has been detected, the SUB POWER is turned off and POWER LED flashes to inform of the failure. An abnormality is detected by the signal input state of the control line connected to the microcomputer.
  • Page 31 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.YA140) Printed in Japan...
  • Page 32 COLOR TELEVISION EQUALIZER • CINEMA SURROUND • COMPONENT INPUT Contents AV-29JT14 AV-21VT14 Knowing your TV’s features ............3 Remote control buttons and basic functions ......4 AV-29JT34 AV-21VT34 TV buttons and functions ............6 AV-29VT14 AV-21WA14 Setting up your TV ..............7 AV-29VT34 AV-21YT14 Basic setting for picture ..............
  • Page 33 Thank you for buying this JVC color television. To make sure you understand how to use your new TV, please read this manual thoroughly before you begin. WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT 7 If you are not going to use this TV for a long period of time, be sure to EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

  • Page 34: Knowing Your Tv's Features

    Knowing your TV’s features Main features You can listen to the stereo sound or SAP from TV program broadcasting by MTS system. (SAP: Second audio program.) CLOSED CAPTION You can display dialog on the screen from TV broadcasting with Closed Caption system. You may also be able to display some information in text form if available.

  • Page 35: Remote Control Buttons And Basic Functions

    Remote control buttons and basic functions No. Press POWER Turn on or off the TV from standby mode. MENU/OK Display menu and confirm selected function. 5 / ∞ / 2 / 3 Select and adjust menu function. CHANNEL -/+ Select the desired channel number. VOLUME -/+ Adjust the volume level.
  • Page 36 Remote control buttons and basic functions (continued) How to operate menus and menus locations Top menu 2nd menu Location 3rd menu Location MENU INPUT EXT. INPUT P.16 – – Operation Note DISPLAY P.16 – – Press the MENU/OK button 2. Display the MENU To exit the MENU, CLOSED CAPTION P.15...

  • Page 37: Tv Buttons And Functions

    TV buttons and functions The illustrations shown below is for AV-29VT34 and No. Button/terminal Description Page AV-21YT14 only, which are used for explanation L (main power) Press to turn on or turn off the TV’s main power. – purpose. POWER lamp Indicate the TV is being turned on or off.

  • Page 38: Setting Up Your Tv

    TV with the aerial cable. Then connect the JVC logo appears on the screen. output jacks of your VCR and the VIDEO-1 input jacks of the TV with the video cable (or S-VIDEO cable if available) and audio...
  • Page 39 SETUP TOUR RESTART function. If the JVC logo does not appear, use AUTO PROGRAM function to make the initial settings. This function is located in the INSTALL menu. If the JVC logo appears, although you had made the initial settings, press the TV/VIDEO button to exit from initial settings.

  • Page 40: Basic Setting For Picture

    Basic setting for picture COLOR SYSTEM PICTURE MODE You can select the appropriate color system when the picture is You can choose the desired picture setting with one-touch. not clear or no color appears. Press the PICTURE MODE button to select a setting. Press the COLOR SYSTEM button to select a setting.
  • Page 41 Basic setting for picture (continued) Adjusting the picture – USER WHITE BALANCE You can adjust the desired picture setting when selecting USER You can change the white balance of the picture to better match in PICTURE MODE. the type of video being viewed. Select the WHITE BALANCE in the PICTURE menu, then choose Select the USER in PICTURE MODE under PICTURE menu.

  • Page 42: Advanced Setting For Picture

    Advanced setting for picture Press the 5/∞ buttons until the picture become level. Then AI ECO SENSOR (ECO) press the MENU/OK button. You can adjust TV screen contrast according to the brightness of your room. Press the ECO button to select the desired mode. COMPRESS (16:9) Mild contrast (recommended).

  • Page 43: Basic Setting For Sound

    Basic setting for sound BALANCE SUPER BASS (BASS) You can adjust the volume balance between the left and right You can enjoy powerful bass sound with the Twin Port Bass speakers. Blaster unit. Select the BALANCE in SOUND menu, then adjust the setting. Press the BASS button to select ON or OFF.

  • Page 44: Advanced Setting For Sound

    Advanced setting for sound CINEMA SURROUND EQUALIZER You can enjoy an enhanced sound for wider audience. You can adjust the sound level of each frequencies when selecting Press the CINEMA SURROUND button to select a setting. USER mode in SOUND MODE. Select the USER in SOUND MODE under SOUND menu.

  • Page 45: Favorite Channel And Video Setting

    Favorite channel and video setting To register the favorite channel Select the desired item that you wish to adjust. PICTURE BRIGHT DETAIL COLOR You can register and recall 4 favorite channels by using the color buttons (red, green, yellow, blue). SOUND MODE (USER, DYNAMIC, MUSIC, NEWS) TINT In TV mode, select a TV channel (CH02-CH69, CC01-CC125)

  • Page 46: Customized Setting

    Customized setting CHILD LOCK You can reduce the noise. You can disable the front control buttons of the TV. Select the VNR in the PICTURE FEATURES menu under Select the CHILD LOCK in the FEATURES menu, then choose PICTURE menu, then choose a setting of VNR function. ON or OFF.
  • Page 47 Customized setting (continued) AUTO SHUTOFF EXT. INPUT (TV/VIDEO) You can set the TV to turn off automatically when no signal is You can select TV or video terminal input with one touch. received for about 15 minutes or longer after the end of a Press the TV/VIDEO button to select an input.

  • Page 48: Tv Channel Presetting

    TV channel presetting Choose CHANNEL SUMMARY, then press the MENU/OK To register the TV channels automatically button. You can register the TV channels into the TV’s channel list CHANNEL SUMMARY menu appears. automatically. Display the INSTALL menu. CHANNEL SUMMARY ❇ CH/CC SKIP INSTALL menu...

  • Page 49: Additional Preparation

    Additional preparation The illustrations shown in this section are for AV-29VT34 and AV- Connecting to rear component/video input 21YT14 only, which are used for explanation purpose. Your TV terminal and output terminal may not look exactly the same as illustrated. Rear of TV AV-29VT34 Before connecting...
  • Page 50 Additional preparation (continued) CAUTION: Attaching the Twin Port Bass Blaster Unit The Twin Port Bass Blaster Unit is just placed on top of the TV <AV-29JT34/AV-29VT34/AV-25VT34/AV-21VT34 only> and is not held in place by a screw. When using the unit, pay The Twin Port Bass Blaster Unit is packaged together with the attention to the following cautions.

  • Page 51: Troubleshooting

    Troubleshooting If a problem occurs when you are using the TV, check the below • Cannot operate the • The batteries may be exhausted. Replace with troubleshooting guide before calling for repair. remote control new batteries (see page 7). • Ensure that you are operating the remote less than seven meters from the front of your TV.

  • Page 52: Specifications

    Specifications TV RF systems Color systems TV mode: NTSC 3.58 MHz VIDEO mode: PAL, SECAM, NTSC 3.58 MHz, NTSC 4.43 MHz Receiving channels VHF low channel (VL), VHF high channel (VH), UHF channel (U) Receives cable channels in mid band, super band and hyper band. External input / output VIDEO-1: S-video input (Except for AV-21YT14, AV-14FT14), VIDEO input, AUDIO L/R input...
  • Page 53 MEMO...
  • Page 54 MEMO...
  • Page 55 © 2004 Victor Company of Japan, Limited 0704-FLE-JMT...
  • Page 56 SCHEMATIC DIAGRAMS FLAT COLOR TELEVISION YA140 2004 AV-21VT14 AV-21VT34 CD-ROM No.SML200410 BASIC CHASSIS No.YA140 COPYRIGHT © 2004 Victor Company of Japan, Limited 2004/10...
  • Page 57 AV-21VT14 AV-21VT34 STANDARD CIRCUIT DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS 1.SAFETY Type No indication : Ceramic capacitor The components identified by the symbol and shading are : Metalized mylar capacitor critical for safety. For continued safety replace safety ciritical : Polypropylene capacitor components only with manufactures recommended parts.
  • Page 58 SEMICONDUCTOR SHAPES ................ USING P.W.BOARD..................BLOCK DIAGRAM ..................CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM [AV-21VT14/P] (1/3) ................2-5 MAIN PWB CIRCUIT DIAGRAM [AV-21VT14/P] (2/3),(3/3) ................ 2-7 MAIN PWB CIRCUIT DIAGRAM [AV-21VT34/P] (1/3) ................2-9 MAIN PWB CIRCUIT DIAGRAM [AV-21VT34/P] (2/3),(3/3) ............... 2-11 PATTERN DIAGRAMS MAIN PWB PATTERN ..........................

  • Page 59: Block Diagram

    BLOCK DIAGRAM MAIN PWB IC701 MAIN MICRO COMPUTER/ IF VIDEO RGB SYNC DEF. PROCESS IC351 108,109 SCL1, SDA1 RGB OUT I 2 C IC702 127,128 SCL0, SDA0 MICRO MAIN MEMORY DIGITAL SIGNAL PROCESS COMPUTER TU001 98,99 TUNER REMOTE PORT KEY_IN CRT SOCKET PEAKING SCAN ROUT...

  • Page 60: Circuit Diagrams

    CIRCUIT DIAGRAMS MAIN PWB ASS'Y(3/3) (CRT SOCKET) VIDEO-3 CN10T INPUT MAIN PWB CIRCUIT DIAGRAM [AV-21VT14/P] (1/3) CN00C QGA2501F1-06 J806 CN00T QNN0281-003 QJL001-065631 J808 J807 QNN0282-001 QNN0281-002 S805 S804 S803 S802 S801 IC801 RPM7238-H5 QSW0619-003Z QSW0619-003Z QSW0619-003Z QSW0619-003Z QSW0619-003Z J809 SPEAKER...

  • Page 61: Main Pwb Circuit Diagram [Av-21Vt14/P] (1/3)

    MAIN PWB CIRCUIT DIAGRAM [AV-21VT14/P] (2/3),(3/3) IC351 TDA6107AJF/N1 C356 R354 SK351 QNZ0536-001 R358 QRZ0107-152Z R359 PROTECT F901 STB1 QRZ0107-152Z QMF51E2-4R0J4 RY901 QSK0061-002 CN0PW R360 QGA7901F1-02 QRZ0107-152Z R381 D956 C966 C352 100/16 VDRB- R597 4.7/250 VA901 SG351 C910 R963 QAF0060-621 VDRB-...

  • Page 62: Main Pwb Circuit Diagram [Av-21Vt34/P] (1/3)

    MAIN PWB CIRCUIT DIAGRAM [AV-21VT34/P] (1/3) MAIN PWB ASS'Y(3/3) (CRT SOCKET) VIDEO-3 CN10T INPUT CN00C QGA2501F1-06 J806 CN00T QNN0281-003 QJL001-065631 J808 J807 QNN0282-001 QNN0281-002 IC801 S805 S804 S803 S802 S801 QSW0619-003Z QSW0619-003Z QSW0619-003Z QSW0619-003Z QSW0619-003Z RPM7238-H5 J809 REMOTECON R817 CN00S SPEAKER C805 QNS0155-001...
  • Page 63 MAIN PWB CIRCUIT DIAGRAM [AV-21VT34/P] (2/3),(3/3) IC351 TDA6107AJF/N1 C356 R354 SK351 QNZ0536-001 R358 QRZ0107-152Z R359 PROTECT F901 STB1 QRZ0107-152Z QMF51E2-4R0J4 RY901 QSK0061-002 CN0PW R360 QGA7901F1-02 QRZ0107-152Z R381 D956 C966 C352 100/16 VDRB- R597 4.7/250 VA901 SG351 R963 QAF0060-621 C910 VDRB- VDRA+ QAF0006-501 QFZ9077-104...

  • Page 64: Pattern Diagrams

    PATTERN DIAGRAMS MAIN PWB PATTERN D809 R818 R324 R822 R825 R824 R357 J808 L357 D354 J806 C805 J807 IC302 IC801 D355 J809 D808 D356 R325 R327 S801 S802 S803 S804 S805 L356 FRONT SG351 C806 CN0E1 D814 R628 D807 F901 W096 R633 W011...

  • Page 65: Voltage Chart

    VOLTAGE CHARTS <MAIN PWB> <MAIN PWB (CRT SOCKET)> PIN NO. VOLTAGE(V) PIN NO. VOL AGE(V) PIN NO. VOLTAGE(V) PIN NO. VOL AGE(V) PIN NO. VOLTAGE(V) PIN NO. VOL AGE(V) PIN NO. VOLTAGE(V) PIN NO. VOL AGE(V) PIN NO. VOLTAGE(V) PIN NO. VOL AGE(V) IC401 IC974 TU001...

  • Page 66: Waveforms

    WAVEFORMS -MAIN PWB- IC401-3 IC401-5 IC401-6 IC401-7 IC401-1 25Vp-p 55Vp-p 27Vp-p 0.6Vp-p 0.6Vp-p IC701-10 IC701-11 IC701-22 IC701-23 IC701-48 IC701-66 IC701-67 [0.2us/div] [0.2us/div] 2.3Vp-p 3.1Vp-p 0.8Vp-p 1.1Vp-p 2.1Vp-p 5.4Vp-p 3.0Vp-p IC701-74 IC701-85 IC701-86 IC701-87 1.2Vp-p 2.0Vp-p 1.6Vp-p 2.4Vp-p T522-2 T522-4 T522-6 T522-7 T522-8 T522-9...
  • Page 67 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.YA140) Printed in Japan...
  • Page 68 PARTS LIST CAUTION The parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified ones to secure the  safety. The parts not indicated in this Parts List and those which are filled with lines --- in the Parts No. columns will not be supplied. P.W.
  • Page 69 EXPLODED VIEW -2 ..............................3-5 EXPLODED VIEW PARTS LIST -3 [AV-21VT34/P] ....................3-6 EXPLODED VIEW -3 ..............................3-6 PRINTED WIRING BOARD PARTS LIST [AV-21VT14/P] ..................3-7 MAIN P.W. BOARD ASS'Y (SCW-1039A-H2) ....................3-7 PRINTED WIRING BOARD PARTS LIST [AV-21VT34/P] ..................3-11 MAIN P.W.

  • Page 70: Using P.w. Board & Remote Control Unit

    USING P.W. BOARD & REMOTE CONTROL UNIT P.W.B ASS'Y AV-21VT14/P AV-21VT34/P MAIN P.W.B SCW-1039A-H2 SCW-1038A-H2 ← REMOTE CONTROL UNIT RM-C1282-2H EXPLODED VIEW PARTS LIST -1  Ref.No. Part No. Part Name Description Local GG30068-001A-H AV SHEET GG40023-003A-H JVC MARK GG30044-001B-H...

  • Page 71: Exploded View Parts List -2

    DEG COIL  T522 QQH0188-001 FB TRANSF QYSBSBG4016ZA TAP SCREW M4 x 16mm(x9) QYSBSF3010ZA TAP SCREW M3 x 10mm(x4) GG10187-007A-H REAR COVER AV-21VT14/P  GG10187-008A-H REAR COVER AV-21VT34/P  CM47005-A01-H POWER CORD CLAMP   QMPR380-165-K2 POWER CORD 1.65m BLACK...

  • Page 72: Exploded View -2

    EXPLODED VIEW -2 FRONT CABINET DY01 MAIN PWB (CRT SOCKET PWB) T522 MAIN PWB BASS SPEAKER OUT JACK [AV-21VT34/P] TWIN PORT BASS BLASTER UNIT [AV-21VT34/P] (No.YA140)3-5...

  • Page 73: Exploded View Parts List -3 [Av-21Vt34/P]

    EXPLODED VIEW PARTS LIST -3 [AV-21VT34/P]  Ref.No. Part No. Part Name Description Local LC40352-001A-H RUBBER SHEET (x4) QYSBSFG4016ZA TAP SCREW M4 x 16mm(x13) GG10141-001C-H BASS BOTTOM LC41211-001A SOUND ABSORBER QYSBSFG4016ZA TAP SCREW M4 x 16mm(x4) QAS0118-001 SPEAKER SP03 WJJ0266-002A E-SIC WIRE C-C GG30022-001A-H BASS DUCT R...

  • Page 74: Printed Wiring Board Parts List [Av-21Vt14/P]

    PRINTED WIRING BOARD PARTS LIST [AV-21VT14/P] MAIN P.W. BOARD ASS'Y (SCW-1039A-H2) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D712 MA8051/M/-X Z DIODE D713 MA8039/H/-X Z DIODE IC302 S9066-11 PHOTO CONDUCTOR D714...
  • Page 75 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C529 QETN2EM-475Z E CAPACITOR 4.7uF 250V M C762 QETN1CM-107Z E CAPACITOR 100uF 16V M C530 QCB32HK-561Z C CAPACITOR 560pF 500V K C763 NCB31CK-224X C CAPACITOR 0.22uF 16V K C532 QETN2EM-106Z...
  • Page 76 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R101 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R634 NRSA63J-271X MG RESISTOR 270Ω 1/16W J R102 NRSA63J-822X MG RESISTOR 8.2kΩ 1/16W J R636 NRSA63J-271X MG RESISTOR 270Ω...
  • Page 77 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R809 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J J804 QNN0349-001 PIN JACK VIDEO OUT R810 NRSA63J-391X MG RESISTOR 390Ω 1/16W J J806 QNN0281-003 PIN JACK VIDEO3(FRONT)/L3 R811 NRSA63J-823X...

  • Page 78: Printed Wiring Board Parts List [Av-21Vt34/P]

    PRINTED WIRING BOARD PARTS LIST [AV-21VT34/P] MAIN P.W. BOARD ASS'Y (SCW-1038A-H2) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D701 MA111-X SI DIODE D702 MA8091/H/-X Z DIODE IC302 S9066-11 PHOTO CONDUCTOR D704 MA8091/H/-X Z DIODE IC351...
  • Page 79 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C520 NCB31HK-104X C CAPACITOR 0.1uF 50V K C742 QETN1HM-106Z E CAPACITOR 10uF 50V M C521 QCB31HK-332Z C CAPACITOR 3300pF 50V K C743 QETN1HM-106Z E CAPACITOR 10uF 50V M C522 QFLC1HJ-223Z...
  • Page 80 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C978 QETN1CM-476Z E CAPACITOR 47uF 16V M R602 NRSA63J-272X MG RESISTOR 2.7kΩ 1/16W J C979 QETN1EM-107Z E CAPACITOR 100uF 25V M R603 MA111-X SI DIODE C980 QETN1CM-107Z E CAPACITOR...
  • Page 81 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R751 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J L002 QQL244J-4R7Z PEAKING COIL 4.7uH J R752 NRSA63J-101X MG RESISTOR 100Ω 1/16W J L003 QQL244J-4R7Z PEAKING COIL 4.7uH J R753 NRSA63J-122X...

  • Page 82: Remote Control Unit Parts List (Rm-C1282-2H)

    GG30097-003A-H POLY BAG GG30096-001A-H POLY BAG ------------ BATTERY AA/R6 (x2)  GGT0040-001B-H INST BOOK CEAB004-001 MATCHING UNIT CP30967-007-H POLY BAG AV-21VT34/P GG10142-001B-H BASS TOP CUSHION AV-21VT34/P RM-C1282-2H REMOCON UNIT GG20025-005A-H CORNER LABEL (x2) AV-21VT14/P GG20070-002A-H CORNER LABEL (x2) AV-21VT34/P (No.YA140)3-15...

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