Download
Share
Print this page
  1. Manuals
  2. Brands
  3. JVC Manuals
  4. TV
  5. AV-29V514
  6. Service manual

JVC AV-29V514 Service Manual

Flat colour television
Hide thumbs Also See for AV-29V514:

Advertisement

Quick Links

SERVICE MANUAL
FLAT COLOUR TELEVISION
9
2004
YA139
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
AV-29V514

TABLE OF CONTENTS

COPYRIGHT © 2004 Victor Company of Japan, Limited
/B
BASIC CHASSIS
CW
No.YA139
2004/9

Advertisement

loading

Related Manuals for JVC AV-29V514

Summary of Contents for JVC AV-29V514

  • Page 1: Table Of Contents

    TROUBLESHOOTING ..............1-31 COPYRIGHT © 2004 Victor Company of Japan, Limited AV-29V514 TABLE OF CONTENTS BASIC CHASSIS No.YA139...
  • Page 2 Items Dimensions (W Mass TV RF System Colour System TV Mode Video Mode Stereo System Receiving Frequency VHF Low VHF High CATV Intermediate VIF 38.0MHz Frequency SIF D/K: 31.5MHz (6.5MHz) Colour Sub Carrier Frequency Aerial Input Terminal Power Input Power Consumption...

  • Page 3: Precaution

    SAFETY PRECAUTIONS (1) The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits.

  • Page 4: Specific Service Instructions

    • With AUDIO/VIDEO/S-VIDEO/COMPONENT input terminals. • I C bus control utilizes single chip ICs. • By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged automatically. • Built-in DIGITAL ECO MODE (ECONOMY, ECOLOGY).
  • Page 5 TV/VIDEO MENU EXIT VIDEO-1 INPUT TERMINAL 10 11 COMPONENT (VIDEO-2) INPUT TERMINAL OUTPUT TERMINAL POWER 9 10 VOLUME (-/+) buttons TV/VIDEO EXIT buttons Remote control sensor ECO sensor POWER lamp MAIN POWER button S-VIDEO VIDEO AUDIO L/MONO AUDIO R Y/VIDEO...
  • Page 6 MAIN CPU [MAIN PWB : IC701] PIN FUNCTION Pin no. Pin name VssP2 VssC4 V1.8C4 1.8V (Digital) V3.3A3 3.3V VrefP_Sdac 3.3V (Positive) VrefN_Sdac VrefP_Sdac 3.3V (Negative) VrefN_Sdac VrefP_Sdac 3.3V (Positive) XtalIn 24.567MHz for system clock XtalOut O 24.567MHz for system clock VssA1 NECK V-guard input/ I/O switch...

  • Page 7: Disassembly

    DISASSEMBLY PROCEDURE 3.1.1 REMOVING THE REAR COVER • Unplug the power cord. (1) Remove the 16 screws [A] as shown in Fig.1. (2) Withdraw the REAR COVER toward you. CAUTION: When reinstalling the rear cover, carefully push it inward after inserting the MAIN PWB into the REAR COVER groove.
  • Page 8 FRONT CABINET PICTURE TUBE SPEAKER (X2) REAR COVER 1-8 (No.YA139) SPEAKER SOCKET PWB FRONT CONTROL PWB (1/2) Fig.2 CONTROL BASE CHASSIS BASE CLAW B (under side) Fig.1 [FRONT SIDE] CONTROL BASE (X2) CHASSIS BASE Fig.2 FRONT CONTROL PWB (2/2) CLAW B (under side) MAIN PWB AV TERMINAL...
  • Page 9 REPLACEMENT OF MEMORY IC 3.2.1 MEMORY IC This TV uses the following memory IC. 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 to use the same type IC written with the initial values of data.
  • Page 10 3.2.3 FACTORY SETTING VALUE SETTING OF SYSTEM CONSTANT SET Setting item SYSTEM COMB TILT SUPER BASS TEXT LANGUAGE SOUND BILINGUAL BLUE BACK MUTE COLOUR AUTO ECO SENSOR SURROUND PICTURE BOOSTER COMPONENT S INPUT 1-10 (No.YA139) Setting content MULTI TRIPLE THAI SINGLE STEREO MONO...
  • Page 11 2. DELAY POINT 2. V/C 1. SCREEN 2. CUTOFF(B/G) 3. WDR(R/G/B) 4. BRIGHT(TV/VDO 1/2/3) 5. CONT(TV/VDO 1/2/3/TV 16:9/VDO 16:9) 6. COLOUR(TV/VDO1/2/3/DVD) 7. TINT(TV/VDO 1/2/3) 8. SHARP [Do not adjust] 9. Y DELAY [Do not adjust] 10. TINT DVD [Do not adjust] 11.
  • Page 12 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 13: 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 14 ADJUSTMENT LOCATIONS FRONT CONTROL PWB ASS’Y (1/2) S901 CNDEG POWER CORD DEG COIL MAIN PWB ASS’Y CN00W CRT EARTH (BRAIDED ASS'Y) 1-14 (No.YA139) FRONT CONTROL PWB ASS’Y (2/2) SPEAKER (L) FRONT S805 S801 S804 S806 ROTATION COIL CN002 CN001 CN001 IC702 CN00C IC701...
  • Page 15 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 16 JUST REFERENCE BELOW REFERENCE TOO LOW DELAY POINT AGC TAKEOVER Setting item 8. SHARP (TV/VDO1/2/3) 1. SCREEN 9. Y DELAY (TV/VDO1/2/3 2. CUTOFF (B/G) /S-DVO) 3. WDR (R/G/B) 10. TINT DVD 4. BRIGHT (TV/VDO1/2/3) 11. AMP T.SHARP 5. CONT (TV/VDO1/2/3/TV 16:9/VDO16:9) 6.
  • Page 17 ADJUSTMENT PROCEDURE 4.7.1 B1 VOLTAGE Measuring Item Test point instrument B1 VOLTAGE Signal B1 (pin 1) check generator GND (pin 5) [CN00X DC voltmeter connector in MAIN PWB] 4.7.2 FOCUS ADJUSTMENT Measuring Item Test point instrument FOCUS Signal adjustment generator 4.7.3 IF CIRCUIT ADJUSTMENTS Measuring Item...
  • Page 18 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 19 Measuring Item Test point instrument WHITE Signal BALANCE generator (High light) adjustment Remote control unit 3. WDR REMOTE CONTROL UNIT R DRIVE ( R DRIVE ( SUB BRIGHT Remote adjustment control unit Remote CONTRAST control unit adjustment Adjustment part [2. V/C] Notes: 3.
  • Page 20 Measuring Item Test point instrument SUB COLOUR 1 Remote adjustment control unit SUB COLOUR 2 Signal TP-47G adjustment generator TP-E [CRT SOCKET Oscilloscope PWB] Remote control unit 1-20 (No.YA139) Adjustment part [2. V/C] [Method of adjustment without measuring instrument] 6. COLOUR Notes: •...
  • Page 21 Measuring Item Test point instrument SUB TINT 1 Signal adjustment generator Remote control unit SUB TINT 2 Signal TP-47G adjustment generator TP-E [CRT SOCKET Oscilloscope PWB] Remote control unit 4.7.5 AUDIO SETTING This submenu is for display only, no adjustment is required. Function Item AUDIO...
  • Page 22 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 23 Measuring Item Test point instrument V. HEIGHT Signal adjustment generator Remote control unit Screen size H. POSITION Signal adjustment generator Remote control unit H. WIDTH Signal adjustment generator Remote control unit Screen size 91% Picture size 100% Adjustment part [4. DEF] - PAL V.
  • Page 24 Measuring Item Test point instrument SIDE PIN Signal adjustment generator Remote control unit Straight TRAPEZIUM Signal adjustment generator Remote control unit Parallel V.LINEARITY Signal adjustment generator Remote control unit 1-24 (No.YA139) Adjustment part [4. DEF] - PAL SIDE PIN - 7.
  • Page 25 Measuring Item Test point instrument CORNER PIN Signal adjustment generator Remote control unit Straigt H. PARALLEL Signal adjustment generator Remote control unit Parallel H. BOW Signal adjustment generator Remote control unit Straight Adjustment part [4. DEF] - PAL CORNER PIN - 8.
  • Page 26 COMPRESS : ON (16:9) Measuring Item Test point instrument V. HEIGHT Signal adjustment generator Remote control unit Screen size Screen size V. SLOPE Signal adjustment generator Remote control unit 1-26 (No.YA139) Adjustment part [4.DEF] - PAL V. HEIGHT - 14. V. ZOOM (1) Receive a PAL crosshatch signal of vertical 3.
  • Page 27 Measuring Item Test point instrument SIDE PIN Signal adjustment generator Remote control unit Straight TRAPEZIUM Signal adjustment generator Remote control unit Parallel CORNER PIN Signal adjustment generator Remote control unit Straigt Adjustment part [4. DEF] - PAL SIDE PIN - 7.
  • Page 28 VIDEO - 2 SET: COMPONENT Measuring Item Test point instrument H. POSITION Signal adjustment generator Remote control unit 4.7.7 VSM PRESET SETTING Measuring Item Test point instrument Remote PRESET control unit setting SUB MENU 5. VSM W/B VSM PRESET BRIGHT 1.
  • Page 29 4.7.8 PURITY AND CONVERGENCE PURITY ADJUSTMENT Note: The final adjustment of CONVERGENCE must be done after the FOCUS adjustment. (CONVERGENCE is changed by FOCUS adjustment.) When makes difference by FOCUS adjustment, should be reconfirming PURITY adjustment. (1) Demagnetize CRT with the demagnetizer. (2) Loosen the retainer screw of the deflection yoke.
  • Page 30 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 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 31: 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 32 1-32 (No.YA139)
  • Page 33 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.YA139) Printed in Japan...

This manual is also suitable for:

Av-29v514/bAv-29v534bAv-29v314Av-29v314bAv-29v534