Toshiba 32WLT58 Service Manual
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Toshiba 32WLT58 Service Manual

Toshiba 32WLT58 Service Manual

Lcd color television
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SERVICE MANUAL

LCD Color Television

TOSHIBA CORPORATION 2005
FILE NO. 030-200508
32WLT58
37WLT58
Published in Japan Sep. 2005 (YC)

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Summary of Contents for Toshiba 32WLT58

  • Page 1: Service Manual

    FILE NO. 030-200508 SERVICE MANUAL LCD Color Television 32WLT58 37WLT58 TOSHIBA CORPORATION 2005 Published in Japan Sep. 2005 (YC)

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SERVICE SAFETY PRECAUTIONS ............................ 3 HANDLING THE LCD MODULE ............................5 SERVICE MODE .................................. 7 LOCATION OF CONTROLS ............................... 12 LAYOUT OF MAJOR BOARDS ............................14 MECHANICAL DISASSEMBLY ............................15 EXPLODED VIEWS ................................17 PACKING DISASSEMBLY ..............................19 CHASSIS AND CABINET REPLACEMENT PARTS LIST ....................

  • Page 3: Service Safety Precautions

    SERVICE SAFETY PRECAUTIONS • The caution items shown here describe major safety issues and should always be observed. • The meanings of the various indications are as follows. Indicates a hypothetical situation in which service personnel and nearby third parties, or even WARNING end users due to a product defect after the service operation is completed, could possibly be in danger of injury or even death in the event of operational error.
  • Page 4 WARNING • Always advise users to keep children away. There is danger of injury to children from tools, disassembled products, etc. KEEP CHILDREN AWAY • Always disconnect the power plug before starting work whenever power is not required. Failure to disconnect the power plug before starting work can result in electrical shock. UNPLUG •...

  • Page 5: Handling The Lcd Module

    HANDLING THE LCD MODULE Safety Precautions 3. If the panel surface becomes soiled, wipe with cotton or a In the event that the screen is damaged or the liquid crystal soft cloth. If this does not remove the soiling, breathe on (fluid) leaks, do not breathe in or drink this fluid.
  • Page 6 7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an extended period of time. 8. Do not store the LCD module below the temperature con- ditions described in the specifications. Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage.

  • Page 7: Service Mode

    SERVICE MODE 1. ENTERING SERVICE MODE 1) Press button once on 2) Press button again and 3) While pressing the button, Remote Control. keep pressing. press MENU button on TV set. or Sound Mute (Service mode display) DISPLAYING THE ADJUSTMENT MENU 1) Press MENU button on TV.
  • Page 8 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2. (t button for reverse order) 5. ADJUSTING THE DATA 1) Pressing of VOLUME ; +/– button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
  • Page 9 SELF DIAGNOSTIC FUNCTION 1) Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s is executed properly. 2) During diagnosis, the following displays are shown. Firmware : Version information of microprocessor In case of file name : WL58_EU and Version : 0100 indicates[WL58_EU_0100].
  • Page 10 VERSION CHECK MODE 1) Press “9” button twice on Remote Control during display of adjustment menu in the service mode. The version of main MPU will begin to check. 2) During Version Check, the following displays are shown. MAIN MPU : Version information of microprocessor In case of file name : WL58_EU, Version 0100 for Code Program Version and (E16) for OSD Version indicates [WL58_EU_0100(E16)]...
  • Page 11 10. STATUS CHECK MODE 1) Press “9” button thrice on Remote Control during display of adjustment menu in the service mode. The status of this model will begin to check. 2) During Status Check, the following displays are shown. EXT1 1080i-50 C6 38 54 CE 08 0000 0000 0000...

  • Page 12: Location Of Controls

    LOCATION OF CONTROLS Front Standby INPUT 5 RED – Power on (EXT5) GREEN – Active standby Back SCART 1 (EXT1) CABLE HOLDER COMMON INTERFACE The Common Interface is SCART 2 for a Conditional Access (EXT2) Module (CAM). There is access for two CAMs. Contact a service provider.

  • Page 13: Remote Control

    Stereo/Bilingual reception To change programme positions and text pages To alter the volume To select mode To mute the sound When in TV mode: When using a TOSHIBA VCR or DVD: Still picture press to PAUSE Analogue/Digital mode selection ATV/DTV press...

  • Page 14: Layout Of Major Boards

    LAYOUT OF MAJOR BOARDS U003B FRONT AV BOARD U003E PC HDMI BOARD U003A TN AV BOARD U005 INTERFACE BOARD U004 LOW B BOARD B002 DVB T MODULE U003F KEY BOARD U001 U002A SIGNAL BOARD POWER BOARD U003C U002B RMT LED BOARD AC IN BOARD –...

  • Page 15: Mechanical Disassembly

    MECHANICAL DISASSEMBLY (Representative of 32WLT58) 1. Remove the stand (foot) and back cover. A450 A445 PP3×8 +SW+W SBN ×5 BITTB4×16 SBN ×10 PP 5×16 SW+W SBN A401 ×5 A420 2. Remove the boards (FRONT AV,PC HDMI, KEY) and back center cover.
  • Page 16 3. Remove the boards (POWER, AC-IN, SIGNAL, LOW B, TN AV, RMT LED, INTERFACE, DVB T MODULE) and speakers. PP3×8+SW+W SBN ×5 U004 PP3×8+SW+W SBN ×4 PP3×8+SW+W SBN ×6 U005 U002B PP3×8 U003A +SW+W SBN U001 PP3×8+SW+W SBN PP3×8 ×4 ×8 +SW+W SBN ×2...

  • Page 17: Exploded Views

    EXPLODED VIEWS (Representative of 32WLT58) 1. Chassis Block A445 A450 PP3×8+SW+W SBN ×5 BITTB4×16 SBN ×10 A401 PP3×8+SW+W SBN ×2 PP3×8+SW+W SBN ×2 PP3×8+SW+W SBN ×2 U003E BITTB3×12SBN ×2 PP3×8+SW+W SBN ×2 BITTB4×16 SBN BITTB3×12 ×2 PP3×8+SW+W SBN SBN ×2 ×2...

  • Page 18: Main Block

    2. Main Block PP3×8+SW+W SBN ×5 PP3×8+SW+W SBN ×4 PP3×8+SW+W SBN U005 ×8 PP3×8+SW+W SBN ×6 U004 U003A U001 PP3×8+SW+W SBN PP3×8+SW+W ×4 SBN ×2 U002B U002A PP3×8+SW+W SBN ×2 BITTB4×16 SBN ×12 A315 BITTB4×16 SBN P801 ×2 PP3×8+SW+W SBN ×4 BITTB4×16 SBN BITTB4×16 SBN...

  • Page 19: Packing Disassembly

    PACKING DISASSEMBLY 32WLT58 A702A A702A Y170 Y130 Y101 A702B A702B A701 37WLT58 A705 A701A A702A A705 A702A Y170 Y130 Y101 A702B A702B A701B – 19 –...

  • Page 20: Chassis And Cabinet Replacement Parts List

    • • • • • The part number must be used when ordering parts, in order to assist in processing, be sure to include the Model number and Description. • • • • • The PC board assembly with mark is no longer available after the end of the production. Model : 32WLT58/37WLT58 Capacitors ..... CD : Ceramic Disk PF : Plastic Film EL : Electrolytic Resistors ....
  • Page 21 Location Parts No. Description Location Parts No. Description C869 76435221 CERAMIC DISC, 500V SL 220PF J CC40 76109102 CERAMIC CHIP, 50V B 1000PF K C870 76503425 PLASTIC FILM CQ92 3D2J473J-K5 CC41 76109102 CERAMIC CHIP, 50V B 1000PF K C872 76073189 ELECTROLYTIC, 35V 1000UF M CC59 76109102 CERAMIC CHIP, 50V B 1000PF K C873...
  • Page 22 Location Parts No. Description Location Parts No. Description CS33 76092611 CERAMIC CHIP, 6.3V B 2.2UF K CV59 76666471 ELECTROLYTIC, 16V 470UF M CS34 76092731 CERAMIC CHIP, 16V B 1UF K CV60 76666471 ELECTROLYTIC, 16V 470UF M CS39 76092573 CERAMIC CHIP, 16V B 0.47UF K CV61 76666471 ELECTROLYTIC, 16V 470UF M CS40...
  • Page 23 Location Parts No. Description Location Parts No. Description R865 76552100 OXIDE METAL FILM, 1/2W 10 OHM J R8310 76011223 CHIP, 1/20W 22K OHM J R867 76552330 OXIDE METAL FILM, 1/2W 33 OHM J R8312 76011471 CHIP, 1/20W 470 OHM J R880 76553683 OXIDE METAL FILM, 1W 68K OHM J R8313...
  • Page 24 Location Parts No. Description Location Parts No. Description RC07 76000445 CHIP JUMPER, 1608TYPE RE97 76366472 CARBON FILM, 1/6W 4.7K OHM J RC08 76000445 CHIP JUMPER, 1608TYPE RE98 76366473 CARBON FILM, 1/6W 47K OHM J RC09 76000445 CHIP JUMPER, 1608TYPE RE99 76366101 CARBON FILM, 1/6W 100 OHM J RC10 76000445 CHIP JUMPER, 1608TYPE...
  • Page 25 Location Parts No. Description Location Parts No. Description RS65 76011182 CHIP, 1/20W 1.8K OHM J RV26 76011101 CHIP, 1/20W 100 OHM J RS66 76011100 CHIP, 1/20W 10 OHM J RV27 76011101 CHIP, 1/20W 100 OHM J RS67 76011101 CHIP, 1/20W 100 OHM J RV28 76011103 CHIP, 1/20W 10K OHM J RS68...
  • Page 26 Location Parts No. Description Location Parts No. Description GJ413 76000445 CHIP JUMPER, 1608TYPE L505 23289022 COIL, PEAKING, TRF4100AT GJ414 76000445 CHIP JUMPER, 1608TYPE L820 23248491 COIL, CHOKE 26X13 108MMH 5A TLN3641AF GJ603 76000445 CHIP JUMPER, 1608TYPE L821 23248491 COIL, CHOKE 26X13 108MMH 5A TLN3641AF GR02 76000445 CHIP JUMPER, 1608TYPE L824...
  • Page 27 Location Parts No. Description Location Parts No. Description Q610 23085826 IC, 2CH POWER IC HZIP-12P TA8246AHQ(5) QS04 23205302 TRANSISTOR, 2SC3326-B(F) Q612 23205443 TRANSISTOR, 2SA1162-Y(F) QS05 23205325 TRANSISTOR, RN2404(F) Q615 23205325 TRANSISTOR, RN2404(F) QS06 23205302 TRANSISTOR, 2SC3326-B(F) Q620 23205506 TRANSISTOR, 2SC4081 Q QS07 23205302 TRANSISTOR, 2SC3326-B(F) Q621...
  • Page 28 Location Parts No. Description Location Parts No. Description D881 23357104 DIODE, 1SS244 DV06 23357762 DIODE, ZENER, MA8091-M D882 23357104 DIODE, 1SS244 DV07 23357762 DIODE, ZENER, MA8091-M D883 23357837 DIODE, ZENER, MTZJ5.6B DV08 23357762 DIODE, ZENER, MA8091-M D884 23362219 DIODE, VRM=100V IF=20A FME-220A(023-108) DV09 23357762 DIODE, ZENER, MA8091-M D885...
  • Page 29 SHP-37 23587829 37WL58P(B) LPL-37 23590405 SHP-37 23587829 37WL58P(G) LPL-37 23590406 42WL58P(B) LPL-42 23587831 42WL58P(G) LPL-42 23587831 SHP-32 23587833 32WLT58 LPL-32 23590407 SHP-37 23587834 37WLT58 LPL-37 23590408 42WLT58 LPL-42 23587835 Key to Panel Type: SHP= Sharp AUO=AUO LPL=LG Philips CMO=Chi Mei...

  • Page 30: Pc Boards Top & Bottom View

    #2 23580010 PACKING, TOP PACKING A702B #1 23580008 PACKING, BOTTOM PACKING #2 23580011 PACKING, BOTTOM PACKING A705 #2 23518043 PACKING, JOINT, 32Z5P Y101 23566748 OWNERS MANUAL, ENGLISH 32WLT58;ENG Y130 23306637 REMOCON HAND UNIT IR, DTVPAL CT-90240 Y170 23845800 HOLDER, WIRE, NYLON66 D6.8 CABINET PARTS...
  • Page 31 POWER BOARD PD2171A1 (U002A) BOTTOM (FOIL) SIDE R8395 CAUTION D8805 Q8801 F820 23547832 D8805 LIVE AREA D863 F2AL 250V Q8391 Q880A E-568 IS-P C3A L860 R8815 Q880 R867 Q820 R8803 L886 D822 Q860 L823 L824 Q8191 Q860A C819 C826 C827 C8250 R8802 C886...
  • Page 32 TN AV BOARD PD2172B1 (U003A) BOTTOM (FOIL) SIDE EXT1 EXT2 EXT3 EXT4 PV01 PV02 RC06 RC02 RC06 RC04 RC02 RC04 RV220 RV220 RV219 RV219 RV240 PH01 RV251 PH02 PH03 GC01 RV251 CC70 CC63 CC63 RC03 RS26 RS26 CC70 P515B RV240 RS24 RS24 CC67...
  • Page 33 TN AV BOARD PD2172B1 (U003A) TOP (COMPONENT) SIDE EXT1 EXT4 EXT3 EXT2 LV25 P515B PH03 PH02 PH01 PV02 C104 DV33 DV34 DV33 LV16 C663 C107 DV34 DV35 DV35 CV61 CV53 C104 C663 R650 QV10 PV01 C107 CS10 CV52 LV11 LV11 L104 RS77 RS76...
  • Page 34 FRONT AV BOARD PD2172B2 (U003B) FRONT AV BOARD PD2172B2 (U003B) BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE PV61 PV60 P661 GR602 GR601 RV122 RC11 RC11 RC12 PV60 PV61 RV121 RV121 RV129 RV122 RC12 R687 GR605 RV123 P661 R698 R687 CV122 CY650 DV120 23547833 R689...
  • Page 35 PC HDMI BOARD PD2172B5 (U003E) PC HDMI BOARD PD2172B5 (U003E) BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE 23547833 R-1786 PV99A PV99A 23590259 PD2172 CC41 CC40 CC41 RC41 RC40 RC40 GR610 GR611 GR610 GR611 P662 PV90 PV90 RC52 CC14 RC51 CC17 RC53 CC16 RC14 CC15...
  • Page 36 AC IN BOARD PD2171A2 (U002B) BOTTOM (FOIL) SIDE GAP3 GAP4 GAP1 GAP2 GAP6 GAP5 P801A P802A T801 T802 23547832 CAUTION E-568 LIVE AREA F801 T6.3AH 250V IS-P C3A LOW B BOARD PD2173D1 (U004) BOTTOM (FOIL) SIDE 23547834 CCP-6400 FE20 F630mAL 250V QE92 QE10A QE60A...
  • Page 37 SIGNAL BOARD PD2238A1 (U001) SIGNAL BOARD PD2238A1 (U001) BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE – 42 – – 43 –...
  • Page 38 SCHEMATIC DIAGRAM MODEL : 32WLT58/37WLT58 WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SERVICE SAFETY PRECAUTIONS" ON PAGE 3 OF THIS MANUAL. CAUTION: The international hazard symbols " " in the schematic diagram and the parts list designate components which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or specified in the parts list.
  • Page 39 SCHEMATIC DIAGRAM STRUCTURE: AC INPUT Circuit ..........................1/66 INTERFACE Circuit ..........................2/66 LOW_B Circuit CONNECTOR [ SHEET-1/2 ] ..... 3/66 – LOWB [ SHEET-2/2 ] ..... 4/66 PC-HDMI-IN Circuit ..........................5/66 POWER Circuit CONNECTOR [ SHEET-1/7 ] ..... 6/66 – RELAY/RUSH PROTECTION [ SHEET-2/7 ] .....

  • Page 40: Circuit Block Diagram

    CIRCUIT BLOCK DIAGRAM TN-AV UNIT H001 VIDEO SYSTEM SIGNAL UNIT Q501 QV01 MM1630AQ TB1274AFG SYNC-DET DDR SDRAM DDR SDRAM CVBS SYNC-DET CORTEZ CVBS SCART-1 CVBS/S #8DET OUT-1 DATA CVBS PROCESS SCART-2 OUT-2 #8DET CVBS/S SCART-3 SCART-3 #8DET OUT-3 SEL-OUT ANALOG FRONT EXT-4 YCbCr...

  • Page 41: Audio System

    DIGITAL BOARD MPEG_DEC UK-Digital D-TN (Vestel) AUDIO SYSTEM AV-TERMINAL SIGNAL Q610 H001 TA8246AHQ IC600(MSP4450G-QI-C13-100) DACM_LR APRO Demod. QS01 DACM_SUB Woofer MM1631AJBE SPK-OFF SC1-IN OUT1 E1(SC-full) SC2-IN SC1-OUT Selectable-Out E2(SC-full) OUT2 (SCART3) E3(SC-AV) SC3-IN E4(CS) OUT3 E5(front) SC4-IN HDMI-1(A) SC2-OUT HDMI-2(A) TV-Out(SCART1/2) HDMI(D) LR10...

  • Page 42: Specifications

    SPECIFICATIONS Programme Positions Broadcast systems/channels PAL-I UHFUK21-UK69 Stereo Nicam PAL-B/G UHFE21-E69 2 carrier system VHFE2-E12, S1-S41 Visible Screen Size 32WLT 80cm SECAM-L UHFF21-F69 (approx.) 37WLT 94cm VHFF1-F10, B-Q Display 16:9 SECAM-D/K HFR21-R69 Sound output (at 10% distortion) Main 10W + 10W VHFR1-R12 Video Input Power consumption...

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