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JVC AV-27D104 Service Manual
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JVC AV-27D104 Service Manual

JVC AV-27D104 Service Manual

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SERVICE MANUAL
03
2003
52102
AV-27D104
AV-27D304
AV-27430
AV-27432
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
COLOR TELEVISION
/RA
/RA
/RA
/RA
AV-27D104
AV-27D304
TABLE OF CONTENTS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
, AV-27D104
, AV-27D304
, AV-27430
, AV-27432
AV-27D104 AV-27D304
AV-27430 AV-27432
BASIC CHASSIS
,
/SA
FE2
,
/SA
,
/SA
/SA
AV-27430
AV-27432
No.52102
2003/03

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Summary of Contents for JVC AV-27D104

  • Page 1 AV-27D104 AV-27D304 AV-27430 AV-27432 SERVICE MANUAL COLOR TELEVISION 52102 2003 BASIC CHASSIS AV-27D104 , AV-27D104 AV-27D304 , AV-27D304 AV-27430 , AV-27430 AV-27432 , AV-27432 AV-27D104 AV-27430 AV-27D304 AV-27432 TABLE OF CONTENTS PRECAUTIONS ............... 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 AV-27D104 AV-27D304 AV-27430 AV-27432 SPECIFICATION Contents Items AV-27D104 / AV-27D304 AV-27430 / AV-27432 Dimensions (W x H x D) 75.2cm x 59.0cm x 53.1cm 65.4cm x 59.3cm x 49.4cm (29-5/8” x 23-1/4” x 23”) (25-3/4” x 23-3/8” x 19-1/2”) Mass 32.2kg (70.8 Ibs)
  • Page 3 AV-27D104 AV-27D304 AV-27430 AV-27432 SECTION 1 PRECAUTIONS 1.1 SAFETY PRECAUTIONS (10) Isolation Check (Safety for Electrical Shock Hazard)After re-assembling the (1) The design of this product contains special hardware, many circuits product, always perform an isolation check on the exposed metal and components specially for safety purposes.

  • Page 4: Specific Service Instructions

    2.2 MAIN DIFFERENCE LIST • The difference between AV-27D104/AV-27D304 series models and AV-27430/AV-27432 series models are mainly in the CABINET. • The difference between RA models and SA models is in the PICTURE TUBE. As the result of the difference in PICTURE TUBE, the MAIN PWB also differ.
  • Page 5 AV-27D104 AV-27D304 AV-27430 AV-27432 2.4 FUNCTIONS [FRONT PANEL] <AV-27D104 / AV-27D304> MENU CHANNEL VOLUME POWER <AV-27430 / AV-27432> MENU CHANNEL POWER VOLUME [REAR PANEL] <AV-27D104 / AV-27D304> <AV-27430 / AV-27432> [REMOTE CONTROL UNIT] AV-27D104 (RM-C1255G) AV-27D304 (RM-C1253G) AV-27430 / AV-27432 (RM-C203)
  • Page 6 AV-27430 AV-27432 2.5 DISASSEMBLY PROCEDURE 2.5.1 REMOVING THE REAR COVER 2.5.6 CHECKING THE PW BOARD [AV-27D104 / AV-27D304] (1) Pull out the MAIN PWB (refer to REMOVING THE MAIN (1) Unplug the power plug. PWB). (2) Remove the 11 screws [A] (Fig.1).
  • Page 7 AV-27D104 AV-27D304 AV-27430 AV-27432 [AV-27D104 / AV-27D304] FRONT CABINET SPEAKER CRT SOCKET PWB (Within MAIN PWB) TUNER MAIN PWB SPEAKER (PWB STOPPER) REAR COVER POWER CORD Fig.1 (No.52102)1-7...
  • Page 8 AV-27D104 AV-27D304 AV-27430 AV-27432 [AV-27430/ AV-27432] FRONT CABINET CRT SOCKET PWB (Within MAIN PWB) SPEAKER MAIN PWB TUNER REAR COVER (PWB STOPPER) POWER CORD Fig.2 1-8 (No.52102)
  • Page 9 AV-27D104 AV-27D304 AV-27430 AV-27432 2.6 MEMORY IC REPLACEMENT 2.6.1 MEMORY IC This TV use memory IC. In the memory IC, there are memorized data for correctly operating the video and deflection circuits. When replacing the memory IC, be sure to use IC written with the initial values of data.
  • Page 10 BASS Center V-CHIP TREBLE Center SET LOCK CODE (0000) Unnecessary to set BALANCE Center XDS ID STEREO HYPER SURROUND OFF [Except AV-27D104] CLOCK / TIMERS MODE SET CLOCK Manual TIME ZONE PACIFIC D.S.T. OFF ON / OFF TIMER 1-10 (No.52102)
  • Page 11 AV-27D104 AV-27D304 AV-27430 AV-27432 2.7 REPLACEMENT OF CHIP COMPONENT 2.7.1 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.
  • Page 12 AV-27D104 AV-27D304 AV-27430 AV-27432 SECTION 3 ADJUSTMENT 3.1 ADJUSTMENT PREPARATION (1) 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 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 13: Main Pwb

    AV-27D104 AV-27D304 AV-27430 AV-27432 3.3 ADJUSTMENT LOCATIONS CRT SOCKET PWB (Within MAIN PWB ASS'Y) TP-B CRT EARTH (BRAIDED ASS'Y) TP-E (SOLDER SIDE) FRONT MAIN PWB VOL+ VOL- MENU POWER POWER MEMORY IC702 F901 IC201 T111 IC101 S401 TUNER UPPER : FOCUS...
  • Page 14 AV-27D104 AV-27D304 AV-27430 AV-27432 3.4 BASIC OPERATION OF SERVICE MENU 3.4.1 TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 3.4.2 SERVICE MENU ITEMS With the SERVICE MENU, various adjustments can be made, and they are broadly classified in the following items of settings.
  • Page 15 AV-27D104 AV-27D304 AV-27430 AV-27432 3.4.3.3 SETTING METHOD [1.V/C(S) ADJUSTMENT MODE] For example, adjust the 1.V/C(S) by using the REMOTE CONTROL UNIT. 1) Press the [CHANNEL (-/+)] keys to select the one of setting item from S01 BRIGHT to S21 AGC ADJ.
  • Page 16 AV-27D104 AV-27D304 AV-27430 AV-27432 3.5 INITIAL SETTING VALUE OF SERVICE MENU (1) Adjustment of the service menu is made on the basis of the initial setting values. however, the new setting values which displays on the screen in its optimum condition may differ from the initial setting value.
  • Page 17 AV-27D104 AV-27D304 AV-27430 AV-27432 3.5.2 [2.DEF] Initial setting value Setting item Variable range EXTERNAL (SV, CV) AFC GAIN H POSI 0~31 9 (/SA model) / 10 (/RA model) 9 (/SA model) / 10(/RA model) V SIZE 0~125 V S CORR...
  • Page 18 AV-27D104 AV-27D304 AV-27430 AV-27432 3.6 ADJUSTMENT PROCEDURE 3.6.1 CHECK ITEM Measuring Item Test point Adjustment part Description instrument B1 POWER DC voltmeter B1 Connector (1) Receive the black-and-white signal. (color off) SUPPLY 1-pin : TP-91 (2) Connect the DC voltmeter to TP-91 (B1 connector 1...
  • Page 19 AV-27D104 AV-27D304 AV-27430 AV-27432 3.6.5 DEFLECTION CIRCUIT Measuring Item Test point Adjustment part Description instrument V. SIZE & Signal [2.DEF(D)] (1) Receive the crosshatch signal. V. CENTER generator D03 : V SIZE (2) Select the <D03>(V SIZE). (3) Adjust the <D03> so that the vertical screen size Remote V.
  • Page 20 AV-27D104 AV-27D304 AV-27430 AV-27432 3.6.6 VIDEO CIRCUIT Measuring Item Test point Adjustment part Description instrument WHITE Signal [7.LOW LIGHT] (1) Receive the black-and-white signal (color off). BALANCE generator (2) Select the 7.LOW LIGHT in the SERVICE MENU. (LOW LIGHT) [1.V/C(S)] (3) Set the initial setting value of <S11>(R CUTOFF),...
  • Page 21 AV-27D104 AV-27D304 AV-27430 AV-27432 Measuring Item Test point Adjustment part Description instrument WHITE Signal [8.HIGH LIGHT] (1) Receive the black-and-white signal (color off). BALANCE generator S14 : R DRIVE (2) Select the 8.HIGH LIGHT in the SERVICE MENU. (HIGH LIGHT) S15 : B DRIVE (3) Set the initial setting value of <S14>(R DRIVE) and...
  • Page 22 AV-27D104 AV-27D304 AV-27430 AV-27432 Measuring Item Test point Adjustment part Description instrument SUB COLOR Signal TP-B [1.V/C(S)] [ Method of adjustment without measuring instrument ] generator TP-E S03 : COLOR (1) Receive the broadcast. [CRT SOCKET (2) Select <S03>(COLOR) of the 1.V/C(S).
  • Page 23 AV-27D104 AV-27D304 AV-27430 AV-27432 Measuring Item Test point Adjustment part Description instrument SUB TINT Signal TP-B [1.V/C(S)] [ Method of adjustment without measuring instrument ] generator TP-E S04 : TINT (1) Receive the broadcast. [CRT SOCKET (2) Select <S04>(TINT) of the 1.V/C.
  • Page 24 AV-27D104 AV-27D304 AV-27430 AV-27432 3.6.7 MTS CIRCUIT Measuring Item Test point Adjustment part Description instrument MTS INPUT Remote [3.SOUND(A)] (1) Select the <A01>(IN LEVEL) of the 3.SOUND. LEVEL control unit A01 : IN LEVEL (2) Verify that the <A01> is set at its initial setting value.
  • Page 25 AV-27D104 AV-27D304 AV-27430 AV-27432 3.6.8 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT 3.6.8.1 HIGH VOLTAGE HOLD DOWN CIRCUIT After repairing the high voltage hold down circuit. This circuit shall be checked to operate correctly. 3.6.8.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT (1) Turn the power switch to on.
  • Page 26 AV-27D104 AV-27D304 AV-27430 AV-27432 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. www.jvcservice.com(US Only) JVC CANADA INC. Head office : 21 Finchdene Square Scarborough, Ontario M1X 1A7 (416)293-1311 (No.52102) Printed in Japan 200303WPC...

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