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SERVICE MANUAL LCD FLAT TELEVISION YA090 2004 LT-32WX84 BASIC CHASSIS POWER TV CATV VCR DVD ASPECT MULTI SCREEN SPLIT INDEX FREEZE SWAP SELECT INPUT 1 INPUT 2 INPUT 3 INPUT 4 RETURN+ 100+ THEATER NATURAL VIDEO DIGITAL-IN CINEMA STATUS D-IN SLEEP TIMER DISPLAY SOUND LIGHT MUTING...
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SPECIFICATION Items Contents Dimensions ( W × H × D ) 83.3cm × 63.8 cm × 26.0 cm [Included stand] 83.3cm × 56.9 cm × 9.7 cm [TV only] Mass 21.4 kg [Included stand] 18.6 kg [TV only] Power Input AC220V , 60Hz Power Consumption 223W (Max)
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SECTION 1 PRECAUTION SAFETY PRECAUTIONS (1) The design of this product contains special hardware, (7) Isolation Check (Safety for Electrical Shock Hazard) many circuits and components specially for safety After re-assembling the product, always perform an purposes. For continued protection, no changes should be isolation check on the exposed metal parts of the cabinet made to the original design unless authorized in writing by (antenna terminals, video/audio input and output terminals,...
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INSTALLATION 1.2.1 HEAT DISSIPATION 1.2.3 INSTALLATION REQUIREMENTS If the heat dissipation vent behind this unit is blocked, cooling To ensure safety in an emergency such as an earthquake, and efficiency may deteriorate and temperature inside the unit will to prevent accidents, ensure that measures are taken to prevent rise.
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HANDLING LCD PANEL 1.3.1 PRECAUTIONS FOR TRANSPORTATION 1.3.3 PRECAUTIONS FOR REPLACEMENT OF EXTERIOR When transporting the unit, pressure exerted on the internal LCD PARTS panel due to improper handling (such as tossing and dropping) Take note of the following when replacing exterior parts (REAR may cause damages even when the unit is carefully packed.
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SECTION 2 SPECIFIC SERVICE INSTRUCTIONS FEATURES • New chassis design enable use of an interactive on screen control. • MOTION COMPENSATION : With this function, the seamless reproduction of dynamic motion on the screen has been realized. • Bullet-in 3 dimension Y/C separate circuit. •...
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2.2.2 MAIN MICRO COMPUTER (CPU) FUNCTION Pin No. Pin name Function BS_RXD Not used MICON_V Vertical sync for OSD / CLOSED CAPTION LB_PRO Low B protection detect [Detection : H] Not used /RST Reset [Reset : L] HDMI_INT Not used /TEST 3.3V OSD_YS...
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Pin No. Pin name Function SBD01 Port for writing on board / Communication (XTD) for SUB CPU SBT1 Port for writing on board / Communication (RTD) for SUB CPU HP_VOL Headpone volume control (0V-3.3V) /BS_RESET Not used HDMI_ASW Not used BS1.5CTL Not used ODU_OUT...
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2.2.3 SUB MICRO COMPUTER (CPU) FUNCTION Pin No. Pin name Function (SYSTEM0) (SYSTEM3) AVCC Not used Not used Internal down voltage Reset [Reset : L] TEST Operation test for SUB CPU OSC2 10MHz oscillation for system clock OSC1 10MHz oscillation for system clock Not used Not used BL_D2...
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Pin No. Pin name Function Port for writing on board (PROTECTOR0) Not used Not used RXD2 Port for communication (Main cpu) TXD2 Port for communication (Main cpu) Not used (ACTIVE) Not used Vertical sync (REC_DET) Not used (PSS) Not used (ALARM) Not used (SYSTEM2)
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SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE NOTE: Since this model adopts a layer structure, follow the procedure below in disassembling this model. Be careful enough not to damage or scratch parts. 3.1.1 REMOVING THE STAND 3.1.7 REMOVING THE POWER PWB (1) Remove the 2 screws [A], and remove the STAND •...
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JACK COVER STAND COVER STAND JACK COVER VIDEO PWB SHIELD DIGITAL JACK BASE INPUT MODULE VIDEO PWB REAR COVER BRACKET DIGITAL INPUT MODULE BASE RECEIVER COOLING VIDEO PWB BRACKET REGULATOR PWB MI-COM & DIST POWER MODULE PWB CORD POWER TERMINAL BASE FRONT CONTROL...
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3.1.9 REMOVING THE SPEAKER 3.1.10 REMOVING THE LCD PANEL UNIT • Remove the STAND. • Remove the STAND. • Remove the REAR COVER. • Remove the REAR COVER. (1) Remove the 5 screws [a], and remove the SPEAKER BOX. • Remove the POWER CORD. (2) Remove the 4 screws [b], and remove the SPEAKER (L / •...
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MEMORY IC REPLACEMENT • This model uses the memory IC. • This memory IC stores data for proper operation of the video and drive circuits. • When replacing, be sure to use an IC containing this (initial value) data. 3.2.1 MEMORY IC REPLACEMENT PROCEDURE 3.2.2 SERVICE MENU SETTING ITEMS 1.
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3.2.3 SETTINGS OF FACTORY SHIPMENT 3.2.3.1 BUTTON OPERATION 3.2.3.2 REMOTE CONTROL DIRECT OPERATION Setting item Setting position Setting item Setting position POWER INPUT INPUT CHANNEL CABLE-02 CHANNEL CABLE-02 VOLUME VOLUME MUTING DISPLAY SOUND A.H.S OFF BBE ON A.H.B ON ASPECT NTSC, 525i,525p PANORAMA 750p,1125i FULL OFF TIMER...
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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.
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SECTION 4 ADJUSTMENT ADJUSTMENT PREPARATION (1) There are 2 ways of adjusting this TV : One is with the MEASURING INSTRUMENT AND FIXTURES REMOTE CONTROL UNIT and the other is the • DC voltmeter (or digital voltmeter) conventional method using adjustment parts and •...
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BASIC OPERATION OF SERVICE MODE DO NOT ADJUST MAIN MENU 4.MEMORY SETUP ADDRESS(H) 0000 1.PICTURE/SOUND 7.PANEL 2.YC SEP 8.PP 3.WHITE BALANCE 9.IP 4.MEMORY SETUP 0.HDMI 5.RF AFC 6.DD/CM 5.RF AFC TOO HIGH GOOD TOO LOW TUNER MAIN FINE 1.PICTURE/SOUND 6.DD/CM NTSC CINE ST L FL MUTE NTSC CINE ST L FL MUTE VOLUME(+/-) key...
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4.5.1 TOOL OF SERVICE MODE OPERATION Operate the SERVICE MODE with the REMOTE CONTROL UNIT. 4.5.2 SERVICE MODE ITEMS In general, basic setting (adjustments) items or verifications are performed in the SERVICE MODE. 1.PICTURE / SOUND This sets the setting values of the VIDEO, AUDIO and DRIVE circuits. 2.YC SEP This is used when the YC separation circuit is adjusted.
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(3) VIDEO STATUS 2. YC SEP (3D Y/C separation setting) [Do not change settings of items that are not included in the : STANDARD "ADJUSTMENT PROCEDURE" section. ] : DYNAMIC Sets output data to the 3D Y/C separation circuit. : THEATER •...
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INITIAL SETTING VALUES IN THE SERVICE MODE • Perform fine-tuning based on the "initial values" using the remote control when in the Service mode. • The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved may be different from the default values.
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Setting value NTSC 525i Item Variable Item range STANDARD THEATER STANDARD THEATER HIGH HIGH HIGH HIGH S13 RDRV 000~255 S14 RDRV -127~128 -001 -001 -001 S15 GDRV 000~255 S16 GDRV -127~128 -011 -008 -019 -011 -011 -020 S17 BDRV 000~255 S18 BDRV -127~128 +019...
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Setting value Item Variable Item NTSC 525i 525p 750p/1125i range STANDARD THEATER STANDARD THEATER STANDARD THEATER STANDARD THEATER S42 GAINB 000~003 S43 SLIC 000~031 S44 APG 000~003 S45 GAINA 000~003 (Not display) 000~015 (Not display) 000~015 S48 DCTRAN 000~015 Setting value Item Variable Item...
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4.6.2 [2.YC SEP] NOTE : Setting Item No. Item Variable range Initial setting value is reference value at following condition. value INPUT SIGNAL : NTSC YCM039 (Not display) 000~127 ASPECT : FULL YCM040 (Not display) 000~003 MULTI-SCREEN : SINGLE VIDEO STATUS : STANDARD YCM041 (Not display)
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4.6.3 [3.WHITE BALANCE] Setting Item No. Item Variable range value NOTE : Initial setting value is reference value at following condition. YCS076 (Not display) 000~001 INPUT SIGNAL : NTSC YCS077 (Not display) 000~001 ASPECT : FULL YCS078 (Not display) 000~001 MULTI-SCREEN : SINGLE YCS079...
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ADJUSTMENT PROCEDURE 4.7.1 SETTING BEFORE ADJUSTMENT (1) Check the following settings before adjustment. Item setting value contents R CUT OFF G CUT OFF B CUT OFF (2) Take note of initial values in the following table before adjustment. Then, set the values to adjustment setting values shown in the following table.
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4.7.2 VIDEO CIRCUIT Measuring Item Test point Adjustment part Description instrument COMPONENT Remote control [8.PP] (1) Input 525i signal that shows brightness gradation INPUT BLACK unit ADM013: (NO DISPLAY) with 0% black into a component input terminal. LEVEL (G offset) (2) Set “VIDEO STATUS”...
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Measuring Item Test point Adjustment part Description instrument COMPONENT Remote control [8.PP] (1) Input 525i 100% all-white signal into a component INPUT A-D unit ADM010: (NO DISPLAY) input terminal. CONVERTER (G GAIN) (2) Set "VIDEO STATUS" to STANDARD. GAIN Signal generator (3) Set "ASPECT"...
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Measuring Item Test point Adjustment part Description instrument COMPONENT Remote control [8.PP] (1) Input 525i component 30% all-white signal into a INPUT A-D unit ADM012: (NO DISPLAY) component input terminal. CONVERTER (R OFFSET) (2) Set "VIDEO STATUS" to STANDARD. OFFSET Signal generator ADM014: (NO DISPLAY) (3) Set "ASPECT"...
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Measuring Item Test point Adjustment part Description instrument COMPOSITE Remote control [2. YC SEP] (1) Input NTSC signal that shows brightness gradation INPUT BLACK unit YCM131: (NO DISPLAY) with 0% black. LEVEL (BRIGHTNESS) (2) Set "VIDEO STATUS" to STANDARD. Signal generator (3) Set "ASPECT"...
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Measuring Item Test point Adjustment part Description instrument COMPOSITE Remote control [2. YC SEP] (1) Input a signal that shows brightness gradation with INPUT A-D unit YCM132: (NO DISPLAY) 75% white. CONVERTER (CONTRAST) (2) Set "VIDEO STATUS" to STANDARD. OFFSET Signal generator (3) Set "ASPECT"...
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Measuring Item Test point Adjustment part Description instrument SUB-SCREEN Remote control [8. PP] (1) Input NTSC signal that shows brightness gradation BLACK unit ADM013: (NO DISPLAY) with 0% black into both the right and the left screen. LEVEL (G offset) (2) Set "VIDEO STATUS"...
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Measuring Item Test point Adjustment part Description instrument SUB-SCREEN Remote control [8. PP] (1) Input NTSC signal that shows brightness gradation unit ADM010: (NO DISPLAY) with 75% white into both the right and the left CONVERTER (G GAIN) screen. GAIN Signal generator (2) Set "VIDEO STATUS"...
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Measuring Item Test point Adjustment part Description instrument WHITE Remote control [1. PICTURE/SOUND] (1) Input NTSC 75% all-white signal. BALANCE unit S13: RDRV (R DRIVE) (2) Set "VIDEO STATUS" to STANDARD. (HIGHLIGHT) S15: GDRV (G DRIVE) (3) Set "ASPECT" to FULL. Signal generator S17: BDRV (B DRIVE) (4) Select "COLOR TEMPERATURE"...
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SECTION 5 TROUBLESHOOTING SELF-DIAGNOSIS FEATURE 5.1.1 OUTLINE TEST MODE This unit comes with the "Self-diagnosis" feature, which checks the operational state of the circuit and displays/saves it during TEST MODE failure.Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all 1.
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5.1.6 DETAILS Self-diagnosis is performed for the following items: • PAGE 1 Diagnosis Item Display Description of detection Means of detection signal (line) LOW B LINE Was Low B line short protector activated? PROTECTOR Detection starts 3 seconds upon power on SHORT No.
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5.1.7 DISPLAY METHOD WHEN RASTER IS NOT AVAILABLE When raster is not displayed due to failure of the set, the POWER LED light will flash to indicate the ailure mode. Trigger for forced shutdown of power is stored and displayed. Trigger of error Display LED flash cycle of display unit...
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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.YA090) Printed in Japan...
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Supplementary Here is some information related to the exchange of CONTROL PWB in the LCD PANEL UNIT. For details other than those described in this manual, please refer to the LT-32WX84/K service manual (No.YA090, 2004/3). HOW TO DIFFERENTIATE LCD PANEL UNIT Two types of LCD PANEL UNITS are used in this model.
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LCD PANEL UNIT (polarizer). 1. DISASSEMBLY OF LCD PANEL For removing the LCD PANEL UNIT, see page 1-13 "3.1.10 CONTROL PWB COVER REMOVING THE LCD PANEL UNIT" in LT-32WX84/K service manual. CONTROL PWB 1.1 REMOVING THE CONTROL PWB •...
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EXPLODED VIEW CONTROL PWB COVER EXPLODED VIEW PARTS LIST CONTROL PWB which is to be exchanged differ according to the PARTS No. of the LCD PANEL UNIT. Be sure to confirm the PARTS No. of the LCD PANEL UNIT without fail. ...
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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.YA090B) Printed in Japan...
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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.
PRINTED WIRING BOARD PARTS LIST VIDEO P.W.BOARD ASSY Ref No. Part No. Part Name Description Local (LCA90152-03C) (SSB-1086A) C3006 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z Ref No. Part No. Part Name Description Local C3007 NCB31AK-334X C CAPACITOR 0.33uF 10V K C3008 NDC31HJ-151X C CAPACITOR...
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Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C3510 NDC31HJ-150X C CAPACITOR 15pF 50V J R3039 NRSA63J-101X MG RESISTOR 100Ω 1/16W J C3512 NCF11CZ-475X C CAPACITOR 4.7uF 16V Z R3040 NRSA63J-101X MG RESISTOR 100Ω...
Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local L3502 NQL092K-6R8X P COIL 6.8uH K C9102 QCZ9082-472Z C CAPACITOR 4700pF AC250V M L3503 NQL092K-6R8X P COIL 6.8uH K QCZ9082-472Z C CAPACITOR 4700pF AC250V M C9103 C9111 QEHQ2GM-226...
RECEIVER P.W.BOARD ASSY Ref No. Part No. Part Name Description Local (LCA90182-01B) (SSB-0J086A) C1118 NDC31HJ-221X C CAPACITOR 220pF 50V J Ref No. Part No. Part Name Description Local C1119 NDC31HJ-221X C CAPACITOR 220pF 50V J C1141 QENC1HM-475Z BP E CAPACITOR 4.7uF 50V M C1142 NCB31EK-104X...
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Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C6505 NCB31HK-332X C CAPACITOR 3300pF 50V K R1141 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J C6506 NCB31HK-332X C CAPACITOR 3300pF 50V K R1144 NRSA63J-221X MG RESISTOR 220Ω...
PACKING PACKING PARTS LIST Ref.No. Part No. Part Name Description Local LC10006-033A PACKING CASE GG20025-001A-H CORNER LABEL (x2) LC21479-001B CUSHION LC11697-001B CUSHION ASSY 4pcs in 1set LC41664-003A SET COVER CP30974-001 POLY BAG RM-C13G-1H REMOCON UNIT Inc.POLY BAG LCT1623-001A CAUTION SHEET QPA01002305 POLY BAG 10cm x 23cm...
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SCHEMATIC DIAGRAMS LCD FLAT TELEVISION YA090 2004 LT-32WX84 CD-ROM No.SML200404 BASIC CHASSIS TV CATV VCR DVD POWER ASPECT MULTI SCREEN SPLIT INDEX FREEZE SWAP SELECT INPUT 1 INPUT 2 INPUT 3 INPUT 4 RETURN+ 100+ THEATER NATURAL VIDEO DIGITAL-IN CINEMA STATUS D-IN SLEEP TIMER DISPLAY SOUND...
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LT-32WX84 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.
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CONTENTS SEMICONDUCTOR SHAPES ..............2-2 BLOCK DIAGRAM ..................2-3 CIRCUIT DIAGRAMS ..................2-5 RECEIVER PWB CIRCUIT DIAGRAM ......................2-5 VIDEO PWB CIRCUIT DIAGRAM ......................2-11 POWER PWB CIRCUIT DIAGRAM ......................2-15 REGULATOR PWB CIRCUIT DIAGRAM ....................2-19 FRONT SENSOR PWB CIRCUIT DIAGRAM .................... 2-21 FRONT CONTROL PWB CIRCUIT DIAGRAM ..................
BLOCK DIAGRAM L-SW MAIN L OUT IC7301 IC7807 IC6501[0J] IC6641[0J] TONE/VOLUME/ RGB PROCESS SUB CPU AUDIO R-SW MAIN BBE/SURROUD R OUT GR VOUT TU1101[0J] U/V FRONTEND SPEAKER J6401[L3] L-SW SUB IC6401[0J] LCD PANEL HEADPHONE IC7805 R-SW SUB IC1102[0J] TV L1/R1 MEMORY HEADPHONE DECODE...
CIRCUIT DIAGRAMS RECEIVER PWB CIRCUIT DIAGRAM ( 1/3 ) SHEET1 R1131 Q1103 Q1102 2SC3928A/QR/-X TU1101 2SA1530A/QR/-X TU1101 QAU0322-001 R1132 R1133 R1134 OPEN C1106 OPEN R1143 OPEN C1107 OPEN R1122 R1123 R1142 OPEN OPEN OPEN R1141 C1117 OPEN L1101 OPEN C1162 C1161 R1154 R1153 L1102...
FRONT SENSOR PWB CIRCUIT DIAGRAM SHEET 9 FRONT SENSOR PWB ASS'Y LCA90155-03B (SSB-0L286A) IC8751 CN8003 QGB2542J1-08 R8751 FRONT CONTROL PWB SHEET10 R8754 R8752 R8753 C8751 NOT USE R8759 IC8752 GP1UM281QK R8756 STB5V R8755 OPEN C8753 C8752 OPEN R8758 R8757 OPEN No.YA090 2-21 2-22...
VOLTAGE CHARTS <RECEIVER> <VIDEO> MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE DC ( V ) DC ( V ) DC ( V ) DC ( V ) DC ( V ) DC ( V ) DC ( V ) DC ( V ) DC ( V ) DC ( V )
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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.YA090) Printed in Japan...