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JVC AV-48WP55/H Service Manual And Parts List
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JVC AV-48WP55/H Service Manual And Parts List

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SERVICE MANUAL
REAR PROJECTION TELEVISION
5
2004
YA097
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-66
AV-48WP55
AV-56WP55
AV-65WP55

TABLE OF CONTENTS

COPYRIGHT © 2004 Victor Company of Japan, Limited
,
/H
,
/H
/H
[AV-65WP55]
BASIC CHASSIS
RP
No.YA097
2004/5

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Summary of Contents for JVC AV-48WP55/H

  • Page 1: Table Of Contents

    SERVICE MANUAL REAR PROJECTION TELEVISION YA097 2004 AV-48WP55 AV-56WP55 AV-65WP55 BASIC CHASSIS [AV-65WP55] TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Items Contents AV-48WP55 AV-56WP55 AV-65WP55 Dimensions (W 120cm 124cm 60.8cm 136.8cm 138.6cm 66.7cm 156.6cm 149.5cm 72.8cm (47-1/4" 49" 24") (53-7/8" 54-5/8" 26-3/8") (61-3/4" 58-7/8" 28-3/4") Mass 82 kg ( 181 lbs ) 93.2 kg ( 205.7 lbs ) 108.7 kg ( 239.7 lbs ) TV RF System CCIR (M) Color System...

  • Page 3: Precaution

    SECTION 1 PRECAUTION SAFETY PRECAUTIONS (1) The design of this product contains special hardware, many (10) Isolation Check (Safety for Electrical Shock Hazard) circuits and components specially for safety purposes. For After re-assembling the product, always perform an isolation continued protection, no changes should be made to the original check on the exposed metal parts of the cabinet (antenna design unless authorized in writing by the manufacturer.
  • Page 4 INSTALLATION [ AV-65WP55 ] 1.2.1 REMOVING THE UPPER UNIT FROM THE LOWER UNIT 1.2.1.1 TYPES AND PLACES OF SCREWS • Be careful not to confuse the following four types of screws. Type Ref. Place for attaching screws Quantity Color Shape Front panel bracket Black diameter of 4mm-length of 18mm, acute tip...
  • Page 5 Fig.2 • VOID seal [ a ] attached to the left front panel bracket in order to confirm that a person except JVC installation workers has disassembled the set. This seal is removed when the upper unit is removed, and the letters of "VOID"...
  • Page 6 1.2.1.3 REASSEMBLY PROCEDURE • Make sure that power cord is pulled out from the AC wall socket. • Remove the Top Sheet which covers the lower unit. (1) Lift the upper unit slowly, and then place the upper unit on the lower unit.
  • Page 7 1.2.2 INSTALLATION SITE (1) The rear of this set is provided with ventilation openings. Install the set more than 5 cm from a wall and in a location (more than 5cm) with good ventilation. (2) Avoid the following types of locations. a) Unstable locations (location must be able to withstand heavy weight).

  • Page 8: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS FEATURES • Rear Projection HDTV. • 3-2 PULL DOWN : You can enjoy DVD movies at the highest picture quality. • MOTION COMPENSATION : With this function, the seamless reproduction of dynamic motion on the screen has been realized. •...
  • Page 9 REMOTE CONTROL UNIT [RM-C1257G] POWER key VCR / DVD switch TV / CATV switch MULTI SCREEN MULTI SCREEN operation keys TWIN INDEX C.C. DISPLAY key FREEZE SWAP INPUT SELECT SLEEP TIMER key SOUND key SOUND VIDEO STATUS key TUNE THEATER PRO key ASPECT LIGHT ASPECT key...
  • Page 10 TECHNICAL INFORMATION 2.4.1 MAIN MICRO COMPUTER (CPU) FUNCTION (MN102H75K) Pin No. Pin name Function Pin No. Pin name Function -------- -------- Lighting for on timer operating /MICON_V V.sync for OSD ON_TIM [LOW / ON:H] Low B protection detection LB_PRO SBO 0 Convergence control [RXD] [Protection:H] SBD 0...
  • Page 11 MAIN PARTS LOCATION 2.5.1 PWB ASS'Y ARRANGEMENT The PWB ASS'Y is indicated below. PWB ASS'Y name AV-48WP55H AV-56WP55H AV-65WP55H MAIN PWB ASS'Y SRP-1012A-M2 SRP-1013A-M2 SRP-1002A-M2 MI-COM & DIST MODULE PWB ASS'Y SRP0D001A-M2 POWER PWB ASS'Y SRP-9001A-M2 DEF / CONVERGENCE OUT PWB ASS'Y SRP-2012A-M2 SRP-2013A-M2 DIGITAL CONVERGENCE MODULE PWB ASS'Y...
  • Page 12 SCREEN HANDLING CAUTIONS 2.6.1 SCREEN STORAGE Store the SCREEN ASS'Y in a standing position in order to avoid deformation. If the screen is stored horizontally, there is risk of deforming the screen face. When necessary to place the SCREEN ASS'Y horizontally, position the screen side upwards and sure to place spacers between the screen and resting site (floor or stand etc.) to prevent the screen from sagging.

  • Page 13: Disassembly

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE [AV-65WP55] • Make sure that the power cord is pulled out from the AC wall SPEAKER WIRE socket. 3.1.1 SPEAKER GRILLE (1) Remove 2 screws [ A ] from rear side. (2) Open the door of the FRONT CONTROL BOX and remove 2 screws [ B ] from front side.
  • Page 14 3.1.6 SCREEN ASS'Y • Take out the SPEAKER GRILLE. • Take out the FRONT CONTROL BOX. SCREEN ASS'Y (1) Remove 4 screws [ I ] attaching the FRONT BRACKET. (2) Remove 10 screws [ J ] from rear side. (3) Take out the SCREEN ASS'Y. NOTE : •...
  • Page 15 3.1.8 REAR PANEL (1) Remove 3 screws [ L ]. (2) Remove 4 screws [ M ]. (3) Take out the REAR PANEL. NOTE : • Before the rear panel is inserted into the cabinet, release the short-circuit between the [SB] connector (1) pin and (2) pin of the DIGITAL INPUT UNIT.
  • Page 16 3.1.11 MAIN UNIT • Take out the SPEAKER GRILLE. • Take out the FRONT PANEL. • Take out the REAR PANEL. FOCUS PACK (1) Remove 4 screws [ Q ] from front side. (2) Take out the connector [BH], [R], [BG] on the FRONT SPEAKER MAIN UNIT CONTROL PWB.
  • Page 17 3.1.15 MAIN CHASSIS • Take out the REAR PANEL. (1) Remove 2 screws [ W ]. (2) Remove 2 screws [ R ]. (3) Pull out the MAIN CHASSIS for backside. MI-COM & DIST MODULE PWB NOTE: • If necessary, remove the anode wires, connectors, respectively.
  • Page 18 3.2 DISASSEMBLY PROCEDURE [AV-48WP55, AV-56WP55] • Make sure that the power cord is pulled out from the AC wall socket. SPEAKER WIRE 3.2.1 SPEAKER GRILLE (1) Remove 4 screws [ A ] from rear side. (2) Open the door of the FRONT CONTROL BOX and remove 2 screws [ B ] from front side.
  • Page 19 3.2.7 MIRROR • Take out the SPEAKER GRILLE. • Take out the FRONT CONTROL BOX. • Take out the SCREEN ASS'Y. (1) Remove 9 screws [ J ] attaching the mirror brackets of the MIRROR upper, left and right side. (2) Raise slightly to disengage of the mirror from the bottom bracket.
  • Page 20 3.2.11 MAIN UNIT • Take out the SPEAKER GRILLE. • Take out the FRONT PANEL. • Take out the REAR PANEL. FOCUS PACK (1) Remove 4 screws [ O ] from front side. SPEAKER (2) Take out the connector [BH], [R], [BG] on the FRONT MAIN UNIT WIRE CONTROL PWB.
  • Page 21 3.2.14 MAIN CHASSIS • Take out the REAR PANEL. (1) Remove 2 screws [ S ]. (2) Remove 2 screws [ P ]. (3) Pull out the MAIN CHASSIS for backside. MI-COM & DIST MODULE PWB NOTE: If necessary, remove the anode wires, connectors, respectively.
  • Page 22 MEMORY IC REPLACEMENT 3.3.1 MEMORY IC This memory IC stores data for proper operation of the video and SERVICE MENU deflection circuits. When replacing, be sure to use an IC containing this (initial value) data. 1.PICTURE/SOUND 7.CONVER B 2.YC SEP 8.IP 3.WHITE BALANCE 9.DSD...
  • Page 23 3.3.4 FACTORY SHIPPING SETTING USER SETTING Setting item Setting value Setting item Setting value POWER TINT / COLOR / PICTURE/ Refer to setting of Video status CHANNEL CABLE-02 BRIGHT / DETAIL memory at shipping factory VOLUME setting INPUT COLOR TEMPERATURE DIG.
  • Page 24 CHANNEL SETTING (CHANNEL SUMMARY) Band CH display Setting Band CH display Setting VHF LOW USED SUPER NOT USED NOT USED USED USED NOT USED USED NOT USED USED USED VHF HIGH USED USED NOT USED NOT USED USED NOT USED NOT USED NOT USED USED...
  • Page 25 REPLACEMENT OF CHIP COMPONENT 3.4.1 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. 3.4.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it.

  • Page 26: Adjustment

    SECTION 4 ADJUSTMENT ADJUSTMENT PREPARATION (1) You can make the necessary adjustments for this unit with SETTING POSITION either the Remote Control Unit or with the adjustment tools Setting item Setting position and parts as given below. VIDEO STATUS STANDARD (2) Adjustment with the Remote Control Unit is made on the TINT / COLOR / PICTURE / basis of the initial setting values, however, the new setting...
  • Page 27 ADJUSTMENT LOCATION REMOCON SENSOR PWB FRONT CONTROL PWB POWER SW POWER SW DIGITAL INPUT MODULE PWB [AV-65WP55] MENU CH - CH + VOL - VOL + FRONT INPUT-4 S-VIDEO VIDEO MAIN PWB R SPEAKER L SPEAKER FRONT FRONT CN1001 CN001 CN1002 CN002 CN1004...
  • Page 28 B VM COIL VM PWB G VM COIL R VM COIL SCREEN MI-COM&DIST MODULE PWB CN000E FOCUS FOCUS PACK TP-B TP-G TP-R B CRT G CRT R CRT TP-EB TP-EG TP-ER SOCKET SOCKET SOCKET MI-COM&DIST MODULE PWB CN000Y FRONT FRONT DIGITAL CONVERGENCE CN007 CN007...
  • Page 29 BASIC OPERATION OF SERVICE MENU SERVICE MENU 1.PICTURE/SOUND 7.CONVER B 2.YC SEP 8.IP 3.WHITE BALANCE 9.DSD 4.MEMORY SETUP 0.HDMI 5.RF AFC 6.CONVER A DO NOT ADJUST 1.PICTURE/SOUND 5.RF AFC NTSC FULL ST L FL MUTE TOO HIGH GOOD TOO LOW TUNER MAIN FINE...
  • Page 30 4.5.1 TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 4.5.2 SERVICE MENU ITEMS In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU. 1.PICTURE / SOUND This sets the setting values of the VIDEO, AUDIO and DEFLECTION circuits. 2.YC SEP This is used when the YC SEPARATION circuit is adjusted.
  • Page 31 4.5.5 SERVICE MENU SETTING 1. PICTURE/SOUND 3. WHITE BALANCE AUDIO / VIDEO / DEFLECTION circuit adjustment. Adjustment of LOW LIGHT / HIGH LIGHT. 1. SETTING ITEM No. 1. SELECT ITEM • Press [CH+] / [CH-] key : AUDIO 2. SETTING VALUE : SIGNAL BRIGHT : DEFLECTION...
  • Page 32 6. CONVER A 8. IP Setting the CONVERGENCE PHASE adjustment. DIST circuit data setting. • Setting for 6.CONVER A is described in the CONVERGENCE [Do not adjust] adjustment. 8.IP 6.CONVER A SETTING ITEM No. CPA01~CPA11 NTSC FULL ST L FL MUTE CCA01~CCA12 SETTING ITEM No.
  • Page 33 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 set the screen in its optimum condition may differ from the initial setting. (2) Do not change the initial setting values of the setting items NOT LISTED IN ADJUSTMENT.
  • Page 34 DEFLECTION SYSTEM Item SINGLE PICTURE Item name Variable range TWIN / INDEX (FULL) D01 V. SIZE 000~127 D02 EW 000~063 D03 H. SIZE 000~063 D04 V. SCORE 000~063 D05 V. LINE 000~063 D06 V. CENT 000~063 D07 EW.TRAP 000~063 D08 BOT.CORN 000~015 D09 TOP.CORN 000~015...
  • Page 35 VIDEO SYSTEM ( NTSC / 480i ) NTSC 480i Item Item name Variable range STANDARD THEATER STANDARD THEATER 48" 56" 65" 48" 56" 65" 48" 56" 65" 48" 56" 65" S01 COLOR 000~255 S02 TINT 000~255 ( 480p / 720p / 1080i ) 480p 720p / 1080i Item...
  • Page 36 ( NTSC / 480i ) NTSC 480i STANDARD THEATER STANDARD THEATER Item Item name Variable range HIGH HIGH LOW HIGH HIGH LOW 48" 56" 65" 48" 56" 65" S10 DRIVE R 000~255 (Not display) -128 ~ +127 +004 +006 +014 +005 +006 +014...
  • Page 37 ( NTSC / 480i / OTHERS SIGNAL ) NTSC 480i OTHERS SIGNAL Item Item name Variable range STANDARD THEATER STANDARD THEATER STANDARD THEATER S23 DC CTL 000~255 Item Item name Variable range Initial setting value S24 RGBLIMT 000~015 ( NTSC / 480i / OTHERS SIGNAL ) Item Item name Variable range...
  • Page 38 ( TWIN / REGULER / THEATER / OTHERS ) MULTI SCREEN ASPECT VIDEO STATUS Item Item name Variable range OTHERS TWIN REGULAR THEATER S47 ACL EERG 000~255 Item Item name Variable range Initial setting value S48 CHRM GM 000~255 Item Item name Variable range Initial setting value S49 OSDR DC...
  • Page 39 OTHERS Initial setting value ASPECT Item Item Item name Variable range Item name Variable range 48" 56" 65" CINEMA OTHERS F01 E 1 000~255 F09 AUTOSCR1 000~015 F02 E 2 000~255 F10 AUTOSCR2 000~015 (Not display) 000~255 F11 AUTOSCR3 000~015 F04 CATVMAX 000~255 F12 AUTOSCR4...
  • Page 40 4.6.2 [2.YC SEP] (All fixed) Variable Initial setting Item No. Item name NOTE : range value Initial setting value is reference value at following condition. YCM040 (Not display) 000~003 INPUT SIGNAL : NTSC YCM041 (Not display) 000~063 ASPECT : FULL YCM042 (Not display) 000 / 001...
  • Page 41 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value YCM085 (Not display) 000 / 001 YCM130 (Not display) 000~003 YCM086 (Not display) 000 / 001 YCM131 (Not display) 000~255 YCM087 (Not display) 000~063 YCM132 (Not display)
  • Page 42 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value YCM175 (Not display) 000 / 001 YCS033 (Not display) 000 / 001 YCM176 (Not display) 000 / 001 YCS034 (Not display) 000 / 001 YCM177 (Not display) 000~255...
  • Page 43 4.6.3 [3.WHITE BALANCE] Variable Initial setting Item No. Item name range value NOTE : Initial setting value is reference value at following condition. YCS078 (Not display) 000 / 001 INPUT SIGNAL : NTSC YCS079 (Not display) 000 / 001 ASPECT : FULL YCS080 (Not display)
  • Page 44 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value CBA37 CURSOL COL CDA01 DF DC -512~511 CBA38 CROSS COL CDA02 DF H1 -512~511 CBA39 SQUARE COL CDA03 DF H2 -512~511 CBA40 XCPOS VPOS 0~31 CDA04...
  • Page 45 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value CBA82 SQ7VSIZE 0~255 IPA024 (Not display) 000 / 001 CBA83 SQ7HSIZE 0~255 IPA025 (Not display) 000 / 001 CBA84 SQ8POSV 0~2047 IPA026 (Not display) 000~03F CBA85...
  • Page 46 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value DSA018 (Not display) 000~03F DSB001 (Not display) (Not display) DSA019 (Not display) 000 / 001 DSB002 (Not display) (Not display) DSA020 (Not display) 000~03F DSB003 (Not display) (Not display)
  • Page 47 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value DSB046 (Not display) (Not display) DSC036 (Not display) 000~0FF DSB047 (Not display) (Not display) DSC037 (Not display) 000~00F DSB048 (Not display) (Not display) DSC038 (Not display) 000~0FF...
  • Page 48 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value HDM009 (Not display) 000 / 001 HDM054 (Not display) 000 / 001 HDM010 (Not display) 000 / 001 HDM055 (Not display) 000 / 001 HDM011 (Not display) 000 / 001...
  • Page 49 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value RHD017 (Not display) (Not display) RHD062 (Not display) (Not display) RHD018 (Not display) (Not display) RHD063 (Not display) (Not display) RHD019 (Not display) (Not display) RHD064 (Not display) (Not display) RHD020...
  • Page 50 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value RHD107 (Not display) (Not display) RHD152 (Not display) (Not display) RHD108 (Not display) (Not display) RHD153 (Not display) (Not display) RHD109 (Not display) (Not display) RHD154 (Not display) (Not display) RHD110...
  • Page 51 ADJUSTMENT PROCEDURE 4.7.1 CHECK ITEMS Measuring Item Test point Adjustment part Description instrument X-RAY Resistor S1 connector (1) Receive NTSC whole black signal. PROTECTOR [6.8k 2 pin : X-Ray2 (2) Connect resistor 6.8k (1/4W, ±34 ) between 2 pin check 1/4W ±34 ] 3 pin : X-Ray1 &...
  • Page 52 4.7.3 FOCUS & BEAM SPOT ADJUSTMENT Measuring Item Test point Adjustment part Description instrument FOCUS & Signal TEST MODE (1) Receive NTSC crosshatch signal. BEAM SPOT generator [5.CONVER OFF] (2) Select FULL mode with [ASPECT] key. adjustment (3) Select DYNAMIC mode with [VIDEO STATUS] key. Similar R Def.
  • Page 53 4.7.4 DEFLECTION & CONVERGENCE ADJUSTMENT • 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 54 4.7.4.2 PREPARATION Measuring Item Test point Adjustment part Description instrument SCREEN TILT Signal TEST MODE • Confirm correct FOCUS adjustment. (1) Receive NTSC crosshatch signal. adjustment generator [5.CONVER OFF] (2) Enter TEST MODE [5.CONVER OFF]. (3) Select crosshatch pattern with [INPUT] key. Remote G DEF.
  • Page 55 4.7.4.3 DEFLECTION ADJUSTMENT Measuring Item Test point Adjustment part Description instrument V. POSITION / Signal [1.PICTURE/SOUND] • To memorize every time after finish adjustment on each SIZE / generator D01 : V. SIZE mode. LINEARITY D05 : V. LINE (1) Receive NTSC circle pattern signal. adjustment Remote D06 : V.
  • Page 56 Measuring Item Test point Adjustment part Description instrument SIDE PIN Signal [1.PICTURE/SOUND] (1) Receive NTSC crosshatch signal. adjustment generator D02 : EW (2) Select FULL mode with [ASPECT] key. D08 : BOT.CORN (3) Select 1. PICTURE/SOUND from SERVICE MENU. Remote D09 : TOP.CORN (4) Select <...
  • Page 57 4.7.4.4 CONVERGENCE ADJUSTMENT Measuring Item Test point Adjustment part Description instrument CONVERGENCE Signal [6.CONVER A] NOTE: PHASE generator CPA04 : TPOV OFST Be sure to make it the value of Table-1. Supposing data [check] CPA05 : FINEP differs, correct to the value of Table-1. Remote CPA06 : STARTLIN A When data is corrected (when the [MUTING] key is...
  • Page 58 Measuring Item Test point Adjustment part Description instrument OVERALL Signal [ 6.CONVER A ] NOTE: CONVERGENCE generator CPA01 : FINE OFF Be sure to make it the value of Table-2. Supposing data (LINE) CCA01 : H CENT differs, correct to the value of Table-2. [check] Remote CCA02 : H SIZE...
  • Page 59 Measuring Item Test point Adjustment part Description instrument OVERALL Signal [ 7.CONVER B ] NOTE: CONVERGENCE generator Perform this adjustment after performing OVERALL (POINT) CONVERGENCE (LINE) check. adjustment Remote It adjusts displaying and checking adjustment data by control unit the [DISPLAY] key. Adjust in order of Area A, Area B, Area C and Area D.
  • Page 60 4.7.5 VIDEO ADJUSTMENT Measuring Item Test point Adjustment part Description instrument RGB CUTOFF Signal TP-R [1.PICTURE/SOUND] (1) Receive NTSC signal (include 0% or -3% black). adjustment generator [R CRT S14: CUTOF R (2) Select STANDARD mode with [VIDEO STATUS] SOCKET PWB] S16: CUTOF G key.
  • Page 61 Measuring Item Test point Adjustment part Description instrument WHITE Signal [3.WHITE BALANCE] NOTE : Before starting the adjustment, warm up the unit for BALANCE generator more than 30 minutes. (LOW LIGHT) CUT R (1) Receive NTSC gray scale signal (include 0% black). adjustment Remote CUT B...
  • Page 62 Measuring Item Test point Adjustment part Description instrument SUB BRIGHT Signal [1.PICTURE/SOUND] (1) Receive NTSC signal (include 0% or -2% black). adjustment generator S03: BRIGHT (2) Select STANDARD mode with [VIDEO STATUS] key. (3) Set the COLOR TEMP is LOW mode. Remote (4) Select 1.PICTURE/SOUND from SERVICE MENU.
  • Page 63 Measuring Item Test point Adjustment part Description instrument SUB COLOR / Signal TP-R [1.PICTURE/SOUND] [ Method of adjustment without measuring instrument ] SUB TINT / generator [R CRT S01 : COLOR (1) Receive NTSC color bar signal (include 75% white). B-Y GAIN SOCKET PWB] S02 : TINT...
  • Page 64 Measuring Item Test point Adjustment part Description instrument SUB COLOR / Signal TP-R [1.PICTURE/SOUND] [ Method of adjustment with measuring instrument ] SUB TINT / generator [R CRT S01 : COLOR (1) Receive NTSC color bar signal (include 75% white). B-Y GAIN SOCKET PWB] S02 : TINT...
  • Page 65 4.7.6 AUDIO (MTS) ADJUSTMENT Measuring Item Test point Adjustment part Description instrument MTS INPUT Remote [1.PICTURE/SOUND] (1) Select 1.PICTURE / SOUND from SERVICE MENU. LEVEL control unit A01 : IN LEVEL (2) Select < A01 > (IN LEVEL). check (3) Verify that < A01 > is set at its initial setting value. TV audio AUDIO OUT [1.PICTURE/SOUND]...

  • Page 66: Troubleshooting

    SECTION 5 TROUBLESHOOTING SELF-DIAGNOSIS FUNCTIONS • This model has self-check functions that inform of the failure of the TV by detecting abnormality. • Operational state is always monitored and the identified is memorized on the record. Therefore, diagnosis may be prevented against expectations if "NG" are indicated in many items. When recurrence of symptoms can be predicted, erase (reset) the history of failure and allow the unit to again record the results of diagnosis.
  • Page 67 Indication Check item Details of detection Method of detection SYNC Presence or absence of Presence of synchronized signal. When entering the self-check mode, "OK" is synchronized signal HD : Component signal shown. M : NTSC main signal While running the mode with picture signal, if S : NTSC sub signal the synchronized signal is disappeared, "NG"...
  • Page 68 1-68 (No.YA097)
  • Page 69 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.YA097) Printed in Japan...

This manual is also suitable for:

Av-56wp55/hAv-65wp55/hAv-n48p55/hAv-n56p55/h