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For details other than those described in this manual, please refer to the AV-48WP74/HA and AV-56WP74/ HA model service manual (No.52105, 2003/04). OUTLINE Since the mirror was changed, we have issued the SERVICE MANUAL for AV-48WP74/AHA and AV-56WP74/ AHA. HOW TO IDENTIFY MODELS A suffix “AHA”...
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DIFFERENCE LIST EXPLODED VIEW PARTS LIST -1 (Page 3-2) PARTS No. Ref. No. PARTS NAME DESCRIPTION AV-48WP74/HA AV-48WP74/AHA QYSBSF4012Z ------------ TAP SCREW (X2) Delete LC31752-001A-A ------------ MIRROR BRACKET (X2) Delete LC31733-001A-A LC32173-003A-A MIRROR Glass ------------ QYSBSF4012Z TAP SCREW (X13)
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AV-48WP74 AV-56WP74 SERVICE MANUAL REAR PROJECTION TELEVISION 52105 2003 AV-48WP74 BASIC CHASSIS AV-56WP74 TABLE OF CONTENTS PRECAUTIONS ............... 1-3 SPECIFIC SERVICE INSTRUCTIONS .
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AV-48WP74 AV-56WP74 SPECIFICATION Contents Items AV-48WP74 AV-56WP74 Dimensions (W x H x D) 120.0cm x 124.4cm x 60.9cm 136.8cm x 138.6cm x 66.7cm ( 47 1/4" x 49" x 24" ) ( 53 7/8" x 54 5/8" x 26 3/8" ) Mass 81kg (179 Ibs) 95kg (209 Ibs)
AV-48WP74 AV-56WP74 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. For continued parts of the cabinet (antenna terminals, video/audio input and output protection, no changes should be made to the original design unless terminals, Control knobs, metal cabinet, screwheads, earphone jack,...
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AV-48WP74 AV-56WP74 1.2 INSTALLATION 1.2.1 INSTALLATION SITE (1) The rear of this set is provided with ventilation openings. (more than 5cm) Install the set more than 5 cm from a wall and in a location with good ventilation. (2) Avoid the following types of locations. a) Unstable locations (location must be able to Wall withstand heavy weight).
AV-48WP74 AV-56WP74 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.1 FEATURES • New chassis design enable use of an interactive on screen control. • 2-3 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. •...
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AV-48WP74 AV-56WP74 REMOTE CONTROL UNIT [RM-C1200G] POWER Key ASPECT Key TV CATV VCR DVD POWER ASPECT VCR / DVD Switch MULTI SCREEN SPLIT INDEX EZ SURF TV / CATV Switch FREEZE SWAP SELECT Input select Keys THEATER PRO Key INPUT1 SLEEP TIMER Key INPUT2 DISPLAY Key...
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AV-48WP74 AV-56WP74 2.3 TECHNICAL INFORMATION 2.3.1 MAIN MICRO COMPUTER (CPU) FUNCTION (MN102H75K) Pin No. Pin name Function Pin No. Pin name Function CLK SW2 IP clock switch -------- ON_TIM Lighting for ON TIMER /MICON_V V.sync for OSD CONVER_RXD Convergence control LB_PRO Low B protection detection CONVER TXD...
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AV-48WP74 AV-56WP74 2.4 MAIN PARTS LOCATION 2.4.1 PWB ASS'Y ARRANGEMENT The PWB ASS'Y is indicated below. PWB ASS’Y NAME AV-48WP74 AV-56WP74 MAIN PWB ASS'Y SSB-1070A-M2 SSB-1069A-M2 RECEIVER PWB ASS'Y SSB0R368A-M2 SSB0R368A-M2 MI-COM & DIST MODULE PWB ASS'Y SSB0D070A-M2 SSB0D069A-M2 POWER & DEF PWB ASS'Y SSB-2070A-M2 SSB-2069A-M2 DEF OSC PWB ASS'Y...
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AV-48WP74 AV-56WP74 2.5 SCREEN HANDLING CAUTIONS 2.5.1 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.
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AV-48WP74 AV-56WP74 2.7 DISASSEMBLY PROCEDURE SPEAKER WIRE • Make sure that the power cord is pulled out from the AC outlet. SPEAKER 2.7.1 SPEAKER GRILLE (WOOFER) (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.
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AV-48WP74 AV-56WP74 2.7.7 SCREEN ASS'Y SCREEN ASS'Y • Take out the SPEAKER GRILLE. • Take out the FRONT CONTROL BOX. (1) Remove the 2 screws [ H ] under the SCREEN ASS'Y from front side. (2) Remove 10 screws [ I ] from rear side. (3) Take out the connector [ CN00Z ].
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AV-48WP74 AV-56WP74 2.7.9 REAR PANEL (1) Loosen 7 screws [ K ]. (2) Remove 4 screws [ L ]. (3) Raise slightly REAR PANEL upward. (4) 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.
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AV-48WP74 AV-56WP74 2.7.12 MAIN UNIT • Take out the SPEAKER GRILLE. • Take out the connector [BH], [R], [BG] on the FRONT CONTROL PWB. MAIN UNIT • Take out the REAR PANEL. (1) Remove 4 screws [ O ] from front side. (2) Remove 1 screw [ P ] and 3 screws [ Q ] attaching the REAR SIDE MAIN CHASSIS and BODY.
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AV-48WP74 AV-56WP74 2.7.14 AV TERMINAL BOARD • Take out the REAR PANEL AV TERMINAL (1) Remove 9 screws [ T ]. BOARD (2) Remove 1 screws [ U ]. (3) Pull out the POWER CORD CLAMP from AV TERMINAL BOARD left side. DIGITAL INPUT (4) Remove the nut [ V ] attaching the ANTENNA TERMINAL.
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AV-48WP74 AV-56WP74 2.7.17 PROJECTION UNIT • Take out the SPEAKER GRILLE • Take out the FRONT CONTROL BOX • Take out the REAR PANEL PROJECTION UNIT • Take out the MAIN UNIT. (1) Take out the CRT SOCKET PWB. (2) Remove 4 screws [ Z ] attaching the PROJECTION UNIT. (3) Pull out the PROJECTION UNIT, upward.
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AV-48WP74 AV-56WP74 2.8 REPLACEMENT OF CHIP COMPONENT 2.8.1 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.
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AV-48WP74 AV-56WP74 2.9 MEMORY IC REPLACEMENT 2.9.1 MEMORY IC SERVICE MENU This memory IC stores data for proper operation of the video and deflection circuits. SERVICE MENU When replacing, be sure to use an IC containing this (initial 1.PICTURE/SOUND 7.CONVER BD 2.YC SEP 8.PP value) data.
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AV-48WP74 AV-56WP74 2.9.4 SHIPPING FACTORY SETTING VIDEO STATUS MEMORY (NTSC / 480p) Setting value Item COLOR TINT COLOR PICTURE BRIGHT DETAIL TEMPERATURE STANDARD THEATER HIGH DYNAMIC HIGH GAME HIGH (HD) Setting value Item COLOR TINT COLOR PICTURE BRIGHT DETAIL TEMPERATURE STANDARD THEATER HIGH...
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AV-48WP74 AV-56WP74 SHIPPING FACTORY 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 HIGH DIG.
AV-48WP74 AV-56WP74 SECTION 3 ADJUSTMENTS 3.1 ADJUSTMENT PREPARATION 3.2 ADJUSTMENT EQUIPMENT (1) You can make the necessary adjustments for this unit with (1) DC voltmeter (or digital voltmeter) either the Remote Control Unit or with the adjustment tools (2) Oscilloscope and parts as given below.
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AV-48WP74 AV-56WP74 3.4 ADJUSTMENT LOCATION (1/2) CONVERGENCE OUT PWB FRONT CONTROL PWB FRONT POWER SW POWER SW IC805 IC804 DIGITAL CONVERGENCE MODULE PWB MENU CH - CH + VOL - VOL + INPUT 3 REMOCON SENSOR PWB MI-COM & DIST PWB R/G/B CRT SOCKET PWB FRONT RELAY PWB FRONT...
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AV-48WP74 AV-56WP74 3.5 ADJUSTMENT LOCATION (2/2) DIGITAL INPUT MODULE PWB CRT SOCKET PWB M-I COM & DISC MODULE PWB TP-E TP-E TP-E TP-R TP-G TP-B REAR R CRT SOCKET G CRT SOCKET B CRT SOCKET CONNECTOR FOCUS PACK G VM PWB MAIN PWB SCREEN FOCUS...
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AV-48WP74 AV-56WP74 3.6 BASIC OPERATION OF SERVICE MENU DO NOT ADJUST SERVICE MENU 4.MEMORY SETUP SERVICE MENU ADDRESS(H) 0000 1.PICTURE/SOUND 7.CONVER B 2.YC SEP 8.PP 3.WHITE BALANCE 9.IP 4.MEMORY SETUP 0.GCR 5.RF AFC 6.CONVER A DO NOT ADJUST 1.PICTURE/SOUND 5.RF AFC NTSC CINE ST L FL MUTE Function (Right / Left) key...
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AV-48WP74 AV-56WP74 3.6.1 TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 3.6.2 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.......
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AV-48WP74 AV-56WP74 3.6.5 SERVICE MENU SETTING 1. PICTURE/SOUND 3. WHITE BALANCE AUDIO, VIDEO, DEFLECTION data adjustment. Adjustment of LOW LIGHT / HIGH LIGHT 1.SETTING ITEM No. 1.SELECT ITEM • Press [CH+] / [CH-] key A : AUDIO 2.SETTING VALUE S : SIGNAL BRIGHT D : DEFLECTION •...
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AV-48WP74 AV-56WP74 5. RF AFC 8. PP [Do not adjust] MULTI-PICTURE circuit data setting • Do not adjust (except ADM012~ADM014 : Refer to VIDEO 5.RF AFC ADJUSTMENT page) 8.PP SETTING ITEM No. PPA001~PPA008 PPB001~PPB036 PPC001~PPC008 TUNER PPD001~PPD025 ADM001~ADM034 FINE SETTING VALUE (NOTE) PPA001 TUNER 1(MAIN) / 2(SUB)
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AV-48WP74 AV-56WP74 3.7 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.
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AV-48WP74 AV-56WP74 DEFLECTION SYSTEM Initial setting value Item Item name Variable range SINGLE PICTURE SPRIT / POP / MULTI (FULL) D01 V. SIZE 000~127 D02 EW 000~063 D03 H. SIZE 000~127 D04 V. SCORE 000~063 D05 V. LINE 000~031 D06 V. CENT 000~127 D07 EW.TRAP 000~127...
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AV-48WP74 AV-56WP74 VIDEO SYSTEM ( NTSC / 480i / 480p ) NTSC 480i 480p Item Item name Variable range STANDARD THEATER STANDARD THEATER STANDARD THEATER S01 COLOR 000~255 S02 TINT 000~255 ( 720p / 1080i / HDCP ) 720p / 1080i HDCP Item Item name...
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AV-48WP74 AV-56WP74 ( NTSC / 480i ) NTSC 480i Item Item name Variable range STANDARD THEATER STANDARD THEATER HIGH HIGH HIGH HIGH S10 DRIVE R 000~255 (Not display) -128~+127 S12 DRIVE B 000~255 (Not display) -128~+127 -018 -007 -010 -018 ( 480p / 720p / 1080i ) 480p 720p / 1080i...
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AV-48WP74 AV-56WP74 ( 480p / 720p / 1080i ) 480p / 720p / 1080i HDCP Item Item name Variable range STANDARD THEATER STANDARD THEATER S14 CUTOF R 000~255 (Not display) -128~+127 -008 -006 S16 CUTOF G 000~255 (Not display) -128~+127 S18 CUTOF B 000~255 (Not display)
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AV-48WP74 AV-56WP74 (HDCP / POP / MULTI ) HDCP Item Item name Variable range 480p 1080i / 720p STANDARD THEATER STANDARD THEATER S33 BRT OFST -128~+127 -004 -003 S34 CNT OFST -128~+127 -003 -005 (SPRIT) SPRIT POP / MULTI Item Item name Variable range STANDARD...
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AV-48WP74 AV-56WP74 (ALL SIGNAL ) Item Item Item name Variable range Initial setting value Item name Variable range Initial setting value (Not display) 000 / 001 S49 OSDR DC 000~127 (Not display) 000 / 001 S50 OSDB DC 000~127 (Not display) 000 / 001 S51 BLK OFF 000 / 001...
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AV-48WP74 AV-56WP74 Item Item name Variable range CINEMA Except CINEMA F09 AUTO SCR 1 000~015 F10 AUTO SCR 2 000~015 F11 AUTO SCR 3 000~015 F12 AUTO SCR 4 000~015 F13 AUTO SCR 5 000~015 F14 AUTO SCR 6 000~015 F15 AUTO SCR 7 000~015 Item...
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AV-48WP74 AV-56WP74 3.7.2 [2.YC SEP] (All fixed) Variable Initial setting Item No. Item name NOTE : range value Initial setting value is reference value at following condition. YCM039 (Not display) 000~127 INPUT SIGNAL : NTSC YCM040 (Not display) 000~003 ASPECT : FULL YCM041 (Not display)
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value YCM084 (Not display) 000~063 YCM129 (Not display) 000 / 001 YCM085 (Not display) 000 / 001 YCM130 (Not display) 000~003 YCM086 (Not display) 000 / 001...
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value YCM174 (Not display) 000~255 YCS034 (Not display) 000 / 001 YCM175 (Not display) 000 / 001 YCS035 (Not display) 000~255 YCM176 (Not display) 000 / 001...
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AV-48WP74 AV-56WP74 3.7.3 [3.WHITE BALANCE] Variable Initial setting Item No. Item name range value NOTE : Initial setting value is reference value at following condition. YCS079 (Not display) 000 / 001 INPUT SYGNAL : NTSC YCS080 (Not display) 000~003 ASPECT : FULL YCS081 (Not display)
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value CBA11 GV CLAMP 0 / 1 CBA56 AF5POSV 0~4095 1016 CBA12 BV CLAMP 0 / 1 CBA57 AF5HSIZE 0~255 CBA13 RH CLAMP 0 / 1 CBA58...
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value PPB008 (Not display) 000~255 ADM009 (Not display) 000~0FF PPB009 (Not display) 000~255 ADM010 (Not display) 000~0FF PPB010 (Not display) 000~031 ADM011 (Not display) 000~0FF...
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value IPA012 (Not display) 000~03F PPD001 (Not display) 000~0FF IPA013 (Not display) 000~003 PPD002 (Not display) 000~00F IPA014 (Not display) 000~003 PPD003 (Not display) 000~0FF...
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value IPA057 (Not display) 000~03F IPA102 (Not display) 000~0FF IPA058 (Not display) 000 / 001 IPA103 (Not display) 000~00F IPA059 (Not display) 000 / 001 IPA104 (Not display)
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value IPB025 (Not display) 000~00F IPB070 (Not display) 000~00F IPB026 (Not display) 000~0FF IPB071 (Not display) 000~0FF IPB027 (Not display) 000~00F IPB072 (Not display) 000~00F...
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AV-48WP74 AV-56WP74 Variable Initial setting Variable Initial setting Item No. Item name Item No. Item name range value range value IPC034 (Not display) 000 / 001 IPE001 (Not display) 000~255 IPC035 (Not display) 000 / 001 IPE002 (Not display) 000~255 IPC036 (Not display) 000 / 001...
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AV-48WP74 AV-56WP74 3.8 ADJUSTMENT PROCEDURE 3.8.1 CHECK ITEMS Measuring Item Test point Adjustment part Description instrument HIGH VOLTAGE Signal CRT Anode (1) Receive NTSC whole black signal. generator check (2) Connect the high voltage meter between CRT anode and GND. High voltage (3) Check that the high voltage range DC 31.0kV±1.0kV.
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AV-48WP74 AV-56WP74 3.8.3 FOCUS & BEAM SPOT ADJUSTMENT Measuring Item Test point Adjustment part Description instrument FOCUS & Signal R Def. Yoke (DY) (1) Receive NTSC cross-hatch signal. generator G Def. Yoke (DY) (2) Press [ASPECT] key and select FULL mode. BEAM SPOT B Def.
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AV-48WP74 AV-56WP74 3.8.4 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. •...
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AV-48WP74 AV-56WP74 3.8.4.2 PREPARATION Measuring Item Test point Adjustment part Description instrument SCREEN TILT Signal [1.PICTURE/SOUND] • Confirm correct FOCUS adjustment. generator F62 : Without adjustment (1) Receive NTSC cross-hatch signal. convergence operation (2) Select 1. PICTURE/SOUND from SERVICE MENU. Remote (3) Select <F62>...
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AV-48WP74 AV-56WP74 3.8.4.3 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 generator D01 : V. SIZE SIZE / mode. D05 : V. LINE LINEARITY (1) Receive NTSC circle pattern signal.
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument SIDE PIN Signal [1.PICTURE/SOUND] (1) Receive NTSC cross-hatch signal. generator D02 : EW adjustment (2) Select FULL mode with [ASPECT] key. D08 : BOT.CORN (3) Select 1. PICTURE/SOUND from SERVICE MENU. Remote D09 : TOP.CORN (4) Select <F62>...
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AV-48WP74 AV-56WP74 3.8.4.4 CONVERGENCE ADJUSTMENT(1) ••••••• RGB together Measuring Item Test point Adjustment part Description instrument CONVERGENCE Signal [6.CONVER A] NOTE: generator CPA03 : FINE H PHASE Retain the default value of this adjustment. It is not CPA04 : FINE V adjustment necessary to carry out the adjustment unless the image Remote...
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AV-48WP74 AV-56WP74 3.8.4.5 DEFLECTION ADJUSTMENT(2) ••••••• RGB respectively Measuring Item Test point Adjustment part Description instrument OVERALL Signal [ 6.CONVER A ] NOTE: generator CPA08 : FINE OFF CONVERGENCE Retain the default value of this adjustment. It is not CCA01 : C H CENT adjustment (1) necessary to carry out the adjustment unless the image on Remote...
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument OVERALL Signal [ 7.CONVER B ] NOTE: generator CONVERGENCE Perform this adjustment after performing OVERALL adjustment (2) CONVERGENCE adjustment (1). Remote [POINT] (1) Select 7.CONVER B from SERVICE MENU. Then control unit appear green cross-hatch pattern for adjustment.
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AV-48WP74 AV-56WP74 3.8.5 VIDEO ADJUSTMENT Measuring Item Test point Adjustment part Description instrument Signal [1.PICTURE/SOUND] [WHITE BALANCE LOW LIGHT ADJUSTMENT for generator F44 : Image CONVERTER SINGLE SCREEN] adjustment OFFSET (1) Input the 480i (DVD) whole black signal from the Remote F45 : Image adjustment (1)
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument Signal [1.PICTURE/SOUND] [WHITE BALANCE LOW LIGHT ADJUSTMENT for generator F44 : Image CONVERTER SPLIT RIGHT SCREEN] adjustment OFFSET (1) Press [SPLIT] key to enter the SPLIT screen mode. Remote F45 : Image adjustment (2) (2) Select STANDARD with [VIDEO STATUS] key.
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument RGB CUTOFF Signal TP-R [1.PICTURE/SOUND] (1) Receive NTSC whole black (0%) signal. generator S14: CUTOF R adjustment [R CRT (2) Select STANDARD mode with [VIDEO STATUS] S16: CUTOF G SOCKET PWB] key.
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument WHITE Signal [1.PICTURE/SOUND] (1) Receive NTSC black & white pattern signal (color generator BALANCE S14: CUTOF R off). (LOW LIGHT) S16: CUTOF G (2) Select STANDARD mode with [VIDEO STATUS] Remote adjustment S18: CUTOF B...
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument WHITE Signal [1.PICTURE/SOUND] (1) Receive NTSC black & white signal (color off). generator BALANCE S10: DRIVE R (2) Select STANDARD mode with [VIDEO STATUS] (HIGH LIGHT) S12: DRIVE B key. Remote adjustment (3) The COLOR TEMP is set at LOW mode.
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument Signal [1.PICTURE/SOUND] (1) Receive NTSC black & white signal. generator CONTRAST S04: CONTRAST (2) Select STANDARD mode with [VIDEO STATUS] adjustment key. Remote (3) The COLOR TEMP is set at the LOW mode. control unit (4) Select 1.PICTURE/SOUND from SERVICE MENU.
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument SUB COLOR / Signal TP-R [1.PICTURE/SOUND] [ Method of adjustment with measuring instrument ] generator SUB TINT / TP-B S01 : COLOR (1) Receive NTSC color bar signal. B-Y GAIN TP-E (GND) S02 : TINT (2) Select STANDARD mode with [VIDEO STATUS]...
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AV-48WP74 AV-56WP74 Measuring Item Test point Adjustment part Description instrument MTS INPUT Remote [1.PICTURE/SOUND] (1) Select 1.PICTURE / SOUND from SERVICE MENU. control unit LEVEL 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]...
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AV-48WP74 AV-56WP74 3.9 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT 3.9.1 HIGH VOLTAGE HOLD DOWN CIRCUIT After repairing the high voltage hold down circuit. This circuit shall be checked to operate correctly. 3.9.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT (1) Turn the power switch ON.
AV-48WP74 AV-56WP74 SECTION 4 TROUBLESHOOTING 4.1 SELF CHECK 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. 4.1.1 HOW TO ENTER THE SELF-CHECK MODE (1) Set the <SLEEP TIMER 30MIN>...
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AV-48WP74 AV-56WP74 Indication Check item Details of detection Method of detection XRAY X-ray radiation protection Operation of X-ray protection circuit. At about 3 seconds after the power is turned D561, D562 : POWER & DEF PWB on, the self-check function starts. If NG is detected for 200ms, the power is turned off automatically.
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AV-48WP74 AV-56WP74 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.
AV-48WP74 AV-56WP74 EXPLODED VIEW PARTS LIST - 2 Ref.No. Part No. Part Name Description Local LC31829-001C-A DOOR QYSBSF3012M TAP SCREW 3mm x 12mm(x2) QYSBSF3012M TAP SCREW 3mm x 12mm(x3) LC31883-003A-A CONTROL PANEL LC31749-001A-A LED LENS LC31751-001B-A KNOB AV-48WP74 LC31751-002B-A KNOB AV-56WP74 PU60109...
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AV-48WP74 AV-56WP74 FRONT VM PWB (G only) CRT SOCKET PWB (R/G/B) CONVERGENCE OUT PWB DIGITAL CONVERGENCE MODULE RECEIVER PWB MI-COM & DIST DEF OSC PWB MODULE PWB FRONT RELAY PWB T502 DEF & POWER PWB DIGITAL INPUT MODULE PWB MAIN PWB LINE FILTER PWB (No.52105)3-5...
AV-48WP74 AV-56WP74 PRINTED WIRING BOARD PARTS LIST Ref No. MAIN PW BOARD ASS’Y Part No. Part Name Description Local (SSB-1070A-M2) [AV-48WP74] D1705 MA8100/M/-X Z DIODE (SSB-1069A-M2) [AV-56WP74] D1801 1SR35-400A-T2 SI DIODE Ref No. D1802 MA111-X SI DIODE Part No. Part Name Description Local D1803 MA111-X...
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AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local C1333 NCB31HK-103X C CAPACITOR 0.01uF 50V K C1948 QETN1CM-477Z E CAPACITOR 470uF 16V M C1341 NCB11CK-105X C CAPACITOR 1uF 16V K C1949 QETN0JM-108Z E CAPACITOR 1000uF 6.3V M...
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AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local C3051 NCB31HK-472X C CAPACITOR 4700pF 50V K R1220 NRSA63J-101X MG RESISTOR 100Ω 1/16W J C3052 NCB31HK-472X C CAPACITOR 4700pF 50V K R1221 NRSA63J-101X MG RESISTOR 100Ω...
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AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local R1647 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R2325 NRSA63J-750X MG RESISTOR 75Ω 1/16W J R1649 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R2328 NRSA63J-750X MG RESISTOR 75Ω...
AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local R3509 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J K1305 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R3511 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J K1306 NRSA63J-0R0X MG RESISTOR 0Ω...
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AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local D506 FMV-3FU-F1 SI DIODE C907 QEZ0572-128 E CAPACITOR 1200uF 200V M C908 D521 MTZJ12C-T2 Z DIODE QCZ9054-102 C CAPACITOR 1000pF AC250V Z D522 1SS81-T5 SI DIODE...
AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local R912 QRT029J-R18 MF RESISTOR 0.18Ω 2W J D3102 1SR124-400A-T2 SI DIODE R913 QRT029J-R18 MF RESISTOR 0.18Ω 2W J R914 QRK126J-681X UNF C RESISTOR 680Ω...
AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local SG3001 QAF0056-501Z SURGE ABSORBER 500V M D823 RD33E/B2/-T2 Z DIODE SK3001 CE42535-001J1 C R T SOCKET D824 RD33E/B2/-T2 Z DIODE D825 RD33E/B2/-T2 Z DIODE D826 RD33E/B2/-T2...
AV-48WP74 AV-56WP74 Ref No. Part No. Part Name Description Local REMOCON SENSOR PW BOARD ASS’Y (SSB-8068A-M2) R866 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J Ref No. Part No. Part Name Description Local R867 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J L802 QQL521J-470 COIL 47uH J IC8001...
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AV-48WP74 AV-56WP74 Ref No. Ref No. Part No. Part Name Description Local Part No. Part Name Description Local C117 QTMN1CM-477Z E CAPACITOR 470uF 16V M R174 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J C118 NCB31HK-103X C CAPACITOR 0.01uF 50V K R175 NRSA63J-102X MG RESISTOR 1kΩ...
AV-48WP74 AV-56WP74 FRONT RELAY PW BOARD ASS’Y (SSB0L268A-M2) Ref.No. Part No. Part Name Description Local CN000G QGF1201C2-17 CONNECTOR FFC/FPC (1-17) CN000H QGF1201C2-13 CONNECTOR FFC/FPC (1-13) DIGITAL INPUT MODULE PW BOARD ASS’Y (48WP74CP-S) [AV-48WP74] (56WP74CP-S) [AV-56WP74] Ref.No. Part No. Part Name Description Local...
AV-48WP74 AV-56WP74 PACKING PACKING PARTS LIST Ref.No. Part No. Part Name Description Local LC11252-004A-A PACKING CASE AV-48WP74 LC11252-005A-A PACKING CASE AV-56WP74 LC31759-001B-A BOTTOM CASE AV-48WP74 LC31759-002A-A BOTTOM CASE AV-56WP74 GQ10057-001A-A TOP CUSHION AV-48WP74 GQ10054-001A-A TOP CUSHION AV-56WP74 LC11254-002B-A CUSHION ASSY 4pcs in 1set AV-48WP74 LC11410-002B-A...
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AV-48WP74 AV-48WP74 AV-56WP74 AV-56WP74 CONTENTS AV-48WP74, AV-56WP74 USING P.W. BOARD ......................2-3 STANDARD CIRCUIT DIAGRAM SEMICONDUCTOR SHAPES ................... 2-3 BLOCK DIAGRAM......................2-5 NOTE ON USING CIRCUIT DIAGRAMS CIRCUIT DIAGRAMS 1.SAFETY Type MAIN PWB CIRCUIT DIAGRAM ........................2-7 The components identified by the symbol and shading are No indication :Ceramic capacitor...
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AV-48WP74 AV-48WP74 AV-56WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (9/12) SHEET 9 BASS_MU CN100G QGF1201C2-17 HP_VOL MECA_SW REMO STBVCC ON_TIM POW_LED BS_5V BS_5V STB3.3V STB3.3V FRONT RELAY PWB STB_GND STB_GND SHEET 23 EE_CDS C1853 D1851 OPEN OPEN KEY1 CF1851 OPEN KEY2 R1851 OPEN R1883...
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AV-48WP74 AV-48WP74 AV-56WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (10/12) SHEET 10 CN1004-73 SHEET 12 CN1003 QGB1506L1-16 2.8Vp-p CN1GN1 CN1GN2 SCL0 OPEN OPEN DIST BASE BLOCK CN1004-75 C1442 R1421 SDA0 R1423 3.3K D1403 MA111-X B1_POW NECK C1441 OSD_VD OPEN R1422 NECK POWER &...
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AV-48WP74 AV-48WP74 AV-56WP74 AV-56WP74 MAIN PWB CIRCUIT DIAGRAM (11/12) SHEET 11 SHEET 1 PIN NO. VOLTAGE (V) PIN NO. VOLTAGE (V) IC6001 R6011 R6012 R6013 OPEN R6010 OPEN C1646 C1645 IC1621 OPEN C6002 C6001 R1629 C1630 C6003 R1618 C1623 OPEN OPEN OPEN R1628...
AV-48WP74 AV-48WP74 AV-56WP74 AV-56WP74 FRONT CONTROL PWB CIRCUIT DIAGRAM SHEET 24 FRONT CONTROL PWB SSB0L068A-M2 Y4IN J0401 C0445 QMCC004-C0 1 R0404 Y4IN_GND J0401 C0446 QNZ0438-001 C4IN C4IN_GND R0405 LC0401 LC0403 LC0404 Y0401 R0412 LC0402 R0416 OPEN OPEN R0406 OPEN OPEN R0419 V4IN VIDEO 4...