Toshiba 42WL55A Service Manual Download Page 27

Page: 27 / 37

POWER BOARD PD2171D1 (U002A)

BOTTOM (FOIL) SIDE

– 27 –

– 28 –

IS-P C3A

E-568

23547832

LIVE AREA

CAUTION

F2AL 250V

K
R

GND

24V INV

5V
-1

GND

DETECT

WER_SIG

WER

PR
O

TECT

30V

S-GND

GND

24V

20V

GND

32V

GND

12V

Q820

L824

Q820A

D823

D824

D821

C827

R8242

R8246

R8248

R8240

R8241

R8249

L820

R825

L8242

C822

PP83

R8243

R8245

R8244

R8247

L821

GAP12

L8212

C825

L8211

R8214

L8241

R823

R820

C8250

R821

C840

D842

C8240

D8273

C8211

R826

D8272

C826

L825

D8271

C8241

R8215

C8213

T820

R8216

R8210

D822

T822

D841

D8274

R8213

C8251

C8210

R8212

D825

C8212

L823

R8218

T840

C812

R8130

R812

R8131

F820

R842

PP82

R8396

D815

R8151

C845

Q815

R8230

C8601

C860

R863

C861

Q813

R8195

C863

R8191

Q8191

R8194

R8393

R8150

C8390

C815

R8143

C817

R8232

Q821

D8391

C8191

Q8231

D845

C819

R8161

C816

Q814

R8141

D826

R8411

R8117

R8114

D8231

C862

R8160

R8404

R8115

D862

C814

Q822

R8233

C848

R8113

R8390

D860

R8112

C821

R8412

D816

R8118

Q812

R841

R8142

Q841

R8140

R860

R8111

D8232

R8162

D811

R8133

R8403

Q816

C818

R8192

R8110

R8405

D8390

C8171

D846

R8231

R840

R8392

D8230

R8394

R8395

Q8390

R8144

R864

R8605

R8152

C820

R8391

Q8391

R8116

C843

C8605

D819

Q8230

R8217

R8193

R8132

T860

C881

Q880

C882

D892

C886

R8602

D864

R866

R8607

C880

R8807

Q8802

C887

C888

R8803

D882

Q860A

R8802

Q882

C884

C894

R8815

L886

R8804

C8891

R8604

Q863

C885

C870

R8809

D866

R881

R8801

D889

R8606

C865

Q880A

R865

D8805

D881

D861

C869

D8802

Q8801

L860

C896

R8603

C8802

Q881

L880

D8801

L862

C868

D863

R8810

D884

R867

R8808

D880

D887

Q8601

Q864

R862

D8601

D885

Q8602

D8602

D883

R8814

C883

R8713

C866

Q860

R885

D865

R8601

R8714

C8602

C8801

T880

R8806

C864

R880

C899

D884A

D8803

L883

D8804

R883

R882

C889

R8805

D886A

L881

R884

C895

C890

PP81

D828

D820

GAP11

R8310

R8313

Q8312

SR80

D820A

D8311

Q8310

SR81

R8312

D8313

C824

D8310

Q8311

D8312

PP84

R8715

C8701

Q870

C878

D8705

D8706

PP85

D8401

Q840

C8490

D843

C876

P860

Q842

L878

R8704

C8403

R831

C8402

C846

D872

R830

D8403

R8702

C8401

R8406

Q862

P861

R8410

C877

L840

R8709

D8702

D8404

D874

C844

R8408

D844

PG03

R8708

C847

R8409

D870A

D8402

F870

R8705

R8707

R8703

P802B

R8701

R8407

D8701

R8813

R8710

C891

R8811

D888

Q8704

C875

P807B

Q8702

R8711

R8706

P809B

C872

D873

D871

D870

R8716

C8702

Q8703

C892

C897

D886

L870

R886

D891

C893

C898

Q8701

L872

R8712

L873

C873

L871

C874

R8812

C8703

D890

L884

R8242

R8246

R8248

R8240

R8241

R8249

R8243

R8245

R8244

R8247

R8214

C8240

C8211

R8215

C8213

R8216

R8210

R8213

C8210

R8212

C8212

R8218

C812

R8130

R812

R8131

R8396

R8151

Q815

R8230

R863

R8195

R8191

Q8191

R8194

R8393

R8150

C8390

R8143

C817

R8232

C8191

Q8231

R8161

C816

Q814

R8141

R8117

D8231

R8160

C814

R8233

R8390

R8412

D816

R8118

Q812

R8142

R8140

D8232

R8162

R8133

Q816

R8192

C8171

R8231

R8392

D8230

R8394

R8395

Q8390

R8144

R8605

R8152

R8391

R8116

C8605

Q8230

R8217

R8193

R8132

R8607

R8807

Q8802

R8802

R8815

R8804

R8604

R8809

R8801

R8606

D8805

D8802

Q8801

R8603

C8802

D8801

R8810

R8808

Q8601

D8601

Q8602

D8602

R8814

R8713

R8714

C8801

R8806

D8803

D8804

R8805

R8310

R8313

Q8312

D8311

Q8310

R8312

D8313

D8310

Q8311

D8312

R8715

D8706

D8401

R8710

R8704

R8706

C8402

D8403

R8702

C8401

R8406

R8404

R8410

C8702

R8709

D8702

D8404

R8408

R8403

R8708

R8405

R8409

D8402

R8705

R8707

R8703

R8701

R8407

D8701

R8813

R8811

Q8704

Q8702

R8711

R8716

Q8703

Q8701

R8712

R8812

C8703

Summary of Contents for 42WL55A

Page 1: ...SERVICE MANUAL LCD Color Television 42WL55A 42WL55E 42WL55R 42WL55T FILE NO 060 200509 Published in Japan Sep 2005 YC TOSHIBA CORPORATION 2005 ...

Page 2: ... SERVICE MODE 7 LOCATION OF CONTROLS 12 LAYOUT OF MAJOR BOARDS 14 MECHANICAL DISASSEMBLY 15 EXPLODED VIEW 17 PACKING DISASSEMBLY 19 CHASSIS AND CABINET REPLACEMENT PARTS LIST 20 PC BOARDS TOP BOTTOM VIEW 27 CIRCUIT BLOCK DIAGRAM 39 SPECIFICATIONS 43 APPENDIX SCHEMATIC DIAGRAM ...

Page 3: ...f injury or where there could be physical damage in the event of operational error Physical damage means major damage to a home furnishings and other possessions Examples of marks SHOCK HAZARD PROHIBIT DISASSEM BLING UNPULUG The indicates caution including danger and warning The actual meaning of this caution is indicated inside the or nearby illustrations or text The example shown to the left ind...

Page 4: ...ark is included in a circuit diagram or parts list Parts mounting and routing of the wiring should be the same as that used originally For safety purposes insulating materials such as tubing or tape is sometimes used and printed circuit boards are sometimes mounted floating Also make sure that wiring is routed and clamped to avoid parts that generate heat and which use high voltage Always follow t...

Page 5: ...of the LCD module with the corresponding holes in the LCD cover and fasten with screws Do not strongly push on the mod ule because any impact can adversely affect the perform ance Also use caution when handling the polarized screen because it can easily be damaged CAUTION The metal edges of the LCD module are sharp so use caution to avoid in jury 3 If the panel surface becomes soiled wipe with cot...

Page 6: ...ecifications Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage 9 Do not disassemble the LCD module Such actions could result in improper operation 10 When transporting the LCD module do not use packing containing epoxy resin amine or silicon resin alcohol or oxim The gas generated by these materials can cause loss of polarity ...

Page 7: ...isplayed differently as shown below de pending on the setting of the receiving color system COLP PAL COLC NTSC COLS SECAM Automatic A D Adjustment PC Component 7 button Self diagnostic display ON OFF 9 button CAUTION Never try to perform initialization unless you have changed the memory IC SERVICE MODE 1 ENTERING SERVICE MODE 1 Press button once on 2 Press button again and 3 While pressing the but...

Page 8: ...ialization is required 1 Enter the service mode then select any register item 2 Press and hold the CALL button on the Remote then press the CHANNEL s button on the TV The initialization of EEPROM IC has been complated 3 Check the picture carefully If necessary adjust any adjustment item above Perform Auto tune on the owner s manual CAUTION Never attempt to initialize the data unless EEPROM IC has ...

Page 9: ... the TV on Unit H Power Operation number of protecting circuit 000 is normal When indication is other than 000 overcurrent apt to flow and circuit parts may possibly be damaged Bus line OK is normal SCL GND Red indication SCL GND short circuit SDA GND Red indication SDA GND short circuit SCL SDA Red indication SCL SDA short circuit Bus cont OK is normal NG is abnormal Red indication when type name...

Page 10: ...55_ASIA_0100 E16 N EEPROM Version information of EEPROM Display 1 byte data O SUB MPU Version information of SUB MPU Display 1 byte data P OPTION Option information Display six numbers of 1 byte data Q HDMI ID HDMI ID information Display 4 byte data R CD number Display 8 digit number S Model name Display 7 digit number T Panel Vender information display The following Panel Vender and screen size a...

Page 11: ... information Display RF position number 0 99 on the main screen or Input Source EXT1 2 3 HDMI etc N MAIN FORMAT Display Video and PC format information O MAIN PLL Main PLL information Display five numbers of 1 byte data P SCREEN SIZE Display the screen size as follows Q OTHER STATUS Other status information Display three numbers of 2 byte data Super live Cinema Subtitle 14 9 Wide 4 3 EXT1 1080i 50...

Page 12: ...cator green You can swivel the TV screen Swivel angle 15 degrees to left and right Antenna input RGB PC input RGB PC Audio input 1 Video input COMPONENT VIDEO INPUT terminals 3 COMPONENT VIDEO INPUT terminals MONITOR output terminals Right side view TV back view Cable holder Headphone jack 3 5 mm stereo Back view Power cord Headphones Not supplied 2 Video 2 input terminals Right side view ...

Page 13: ...letext Picture size selection EXIT Menu Program position Teletext Bass boost on off Sound mute When in VCR or DVD mode Only for Toshiba VCR DVD players to PAUSE to EJECT to SKIP REWIND to SKIP FORWARD to PLAY to STOP to REWIND to FAST FORWARD DVD MENU P P 2 1 3 5 4 6 8 7 9 VCR TV DVD 0 OK CALL MENU EXIT Teletext control buttons 33 34 Four colored buttons Red Green Yellow Blue When in Teletext mode...

Page 14: ... 14 LAYOUT OF MAJOR BOARDS U003E PC HDMI BOARD U003B FRONT AV BOARD U001 SIGNAL BOARD U002A POWER BOARD U002B AC IN BOARD U003C RMT LED BOARD U003A TN AV BOARD U004 LOW B BOARD U003D KEY BOARD ...

Page 15: ...ve the boards FRONT AV PC HDMI KEY and back center cover A450 A420 A401 A445 PP3 8 SW W SBN 3 BITTB4 16 SBN 16 PP 5 16 SW W SBN 5 PP3 8 SW W SBN 4 PP3 8 SW W SBN 4 PP3 8 SW W SBN 4 PP3 8 SW W SBN 2 PP3 8 SW W SBN 7 BITTB3 12SBN 2 BITTB4 16 SBN 2 U003E U003D A340 A320 U003B ...

Page 16: ... 4 Remove the display U002B W661 W661 U003A U004 U002A U001 PP3 8 SW W SBN 6 PP3 8 SW W SBN 4 PP3 8 SW W SBN 8 PP3 8 SW W SBN 5 PP3 8 SW W SBN 4 U003C BITTB3 12SBN 3 BITTB 4 16 SBN 6 BITTB 4 16 SBN 6 A201 B001 BITTB4 16 SBN 2 BITTB4 16 SBN 2 PP3 8 SW W SBN 6 PP3 8 SW W SBN 2 ...

Page 17: ...4 PP3 8 SW W SBN 4 PP3 8 SW W SBN 4 PP3 8 SW W SBN 1 PP3 8 SW W SBN 2 PP3 8 SW W SBN 2 PP3 8 SW W SBN 3 PP3 8 SW W SBN 4 PP3 8 SW W SBN 3 BITTB3 12SBN 2 BITTB4 16 SBN 2 PP 5 16 SW W SBN 5 BITTB4 16 SBN 10 A450 A401 A320 U003B U003D U003E A340 A420 A445 ...

Page 18: ...U002B U002A U001 P801 A310 PP3 8 SW W SBN 6 PP3 8 SW W SBN 1 PP3 8 SW W SBN 8 PP3 8 SW W SBN 5 PP3 8 SW W SBN 4 PP3 8 SW W SBN 4 PP3 8 SW W SBN 2 PP3 8 SW W SBN 6 PP3 8 SW W SBN 8 PP3 8 SW W SBN 2 U003C BITTB3 12SBN 3 BITTB3 12SBN 2 BITTB4 16 SBN 2 BITTB4 16 SBN 2 A201 B001 ...

Page 19: ... 19 PACKING DISASSEMBLY A701A A701E A701R A701T A705 A705 A701B A702B A709 A702B A702A A170 Y130 Y101A Y101H Y101J Y101K A702A ...

Page 20: ...CHIP 50V B 0 022UF K C524 76109103 CERAMIC CHIP 50V B 0 01UF K C526 76109103 CERAMIC CHIP 50V B 0 01UF K C527 76619071 ELECTROLYTIC CHIP 50V 2 2UF C529 76100104 CERAMIC CHIP 25V F 0 1UF Z C530 76619157 ELECTROLYTIC CHIP 16V 100UF C605 76109102 CERAMIC CHIP 50V B 1000PF K C606 76109102 CERAMIC CHIP 50V B 1000PF K C660 76669479 ELECTROLYTIC 50V 4 7UF M C661 76669479 ELECTROLYTIC 50V 4 7UF M C662 761...

Page 21: ...12 76666470 ELECTORLYTIC 16V 47UF M 3A CE60 76073186 ELECTROLYTIC 35V 470UF M CE61 76617028 ELECTROLYTIC 16V 1200UF M CE62 76073020 ELECTROLYTIC 10V 1000UF M 3A CE63 76539104 PLASTIC FILM 50V 0 1UF J CE64 76539104 PLASTIC FILM 50V 0 1UF J CE65 76666470 ELECTORLYTIC 16V 47UF M 3A CE66 76539474 PLASTIC FILM 50V 0 47UF J CE67 76666470 ELECTORLYTIC 16V 47UF M 3A CE90 76073186 ELECTROLYTIC 35V 470UF M ...

Page 22: ...HIP 1 20W 47K OHM J R8142 76872470 CHIP 1 16W 47 OHM J R8143 76872470 CHIP 1 16W 47 OHM J R8144 76872390 CHIP 1 16W 39 OHM J R8150 76011562 CHIP 1 20W 5 6K OHM J R8151 76011222 CHIP 1 20W 2 2K OHM J R8152 76011473 CHIP 1 20W 47K OHM J R8160 76011103 CHIP 1 20W 10K OHM J R8161 76011473 CHIP 1 20W 47K OHM J R8162 76011103 CHIP 1 20W 10K OHM J R8191 76000445 CHIP JUMPER 1608TYPE R8192 76011471 CHIP 1...

Page 23: ...RT08 76011221 CHIP 1 20W 220 OHM J RT09 76011471 CHIP 1 20W 470 OHM J RT10 76011222 CHIP 1 20W 2 2K OHM J RT11 76011223 CHIP 1 20W 22K OHM J RT12 76011683 CHIP 1 20W 68K OHM J RT13 76011102 CHIP 1 20W 1K OHM J RT14 76011101 CHIP 1 20W 100 OHM J RT15 76011151 CHIP 1 20W 150 OHM J RT16 76011391 CHIP 1 20W 390 OHM J RT17 76011181 CHIP 1 20W 180 OHM J RT18 76011471 CHIP 1 20W 470 OHM J RT19 76011222 C...

Page 24: ...205506 TRANSISTOR 2SC4081 Q Q816 23205506 TRANSISTOR 2SC4081 Q Q820 23135094 IC PFC 7PIN SRX2039 Q821 23000823 IC PHOTO COUPLER TLP421F GR Q822 23205339 TRANSISTOR 2SC2655 Y F Q840 23135083 IC HYBRID VDSS 800V Q841 23000823 IC PHOTO COUPLER TLP421F GR Q842 23085389 IC NJM431L Q860 23135066 IC STRZ4479 Q862 23000823 IC PHOTO COUPLER TLP421F GR Q863 23000823 IC PHOTO COUPLER TLP421F GR Q864 23205339...

Page 25: ...E91 23357697 DIODE 1SS133 DE92 23357871 DIODE ZENER MTZJ15B DE97 23357895 DIODE ZENER MTZJ30A DE99 23357840 DIODE ZENER MTZJ6 2B MISCELLANEOUS A235 23717214 SCREW BITTB3X12SBN A370 23717267 SCREW BITTB4X16 SBN A375 23717214 SCREW BITTB3X12SBN A410 23717361 SCREW PP3X8 SW W SBN LOCK A411 23717267 SCREW BITTB4X16 SBN A440 23738074 SCREW PP 5X16 SW W SBN B001 23301656 DISPLAY G5LPL42 B215 23469405 IN...

Page 26: ...CCESSORIES A701A 1 23015172 CARTON TOP CASE A701B 23015173 CARTON BOTTOM CASE A701E 2 23015172 CARTON TOP CASE A701R 3 23015174 CARTON TOP CASE A701T 4 23015172 CARTON TOP CASE A702A 23580040 PACKING TOP PACKING A702B 23580041 PACKING BOTTOM PACKING A705 23518043 PACKING JOINT 32Z5P A709 23946938 PACKING CENTER PACKING Y101A 1 23566722 OWNERS MANUAL ENGL LCD E113 42WL55A 2 23566722 OWNERS MANUAL E...

Page 27: ...881 L880 D8801 L862 C868 D863 R8810 D884 R867 R8808 D880 D887 Q8601 Q864 R862 D8601 D885 Q8602 D8602 D883 R8814 C883 R8713 C866 Q860 R885 D865 R8601 R8714 C8602 C8801 T880 R8806 C864 R880 C899 D884A D8803 L883 D8804 R883 R882 C889 R8805 D886A L881 R884 C895 C890 P P 8 1 D 8 2 8 D820 GAP11 R8310 R8313 Q8312 SR80 D820A D8311 Q8310 SR81 R8312 D8313 C824 D8310 Q8311 D8312 PP84 R8715 C8701 Q870 C878 D8...

Page 28: ...57 CV02 RV58 CV01 RV59 RV53 R512 RV52 DV21 DV27 R504 RV70 RC01 C502 C679 R505 R670 RV76 DV28 RV74 RV73 RV75 QV53 RV71 RV36 RV30 RV37 DV29 DV30 RV29 RV35 RV28 RV61 RV78 RV77 RV79 RV66 GR01 R672 C693 R682 R681 R6604 C692 Q671 D670 C684 C674 D671 C678 C685 Q661 Q660 Q663 R686 R684 D678 R685 R683 R6603 R692 R6602 Q662 D676 D677 R6601 R687 RC41 R676 RV65 C662 CC03 R691 CC40 RV72 RV91 RC04 C663 CV17 R67...

Page 29: ...C31 FRONT AV BOARD PD2224A2 U003B TOP COMPONENT SIDE DS 7209 23547863 1 9 8 7 6 5 4 3 2 11 10 RB18 RB08 CB03 RB10 QB07 RB15 QB04 RB22 CB38 RB24 CB04 RB18 RB08 CB02 CB03 DB04 DB01 RB10 QB07 KB01 RB15 QB04 RB22 CB38 RB24 PJ41A CB01 CB05 CB04 PD2224 1 11 3 23590305 ON TIMER POWER PJ41A CB01 CB05 RB09 CB02 DB22 DB20 DB04 DB01 KB01 DB23 RB09 DB22 DB20 DB23 RMT LED BOARD PD2224A3 U003C BOTTOM FOIL SIDE ...

Page 30: ... LE60 RE31 QE60A DE61 LE62 CE65 CE62 DE30 CE31 QE65 QE91 RE92 RE99 QE95A QE90A LE91 RE95 GE92 RE12 RE91 QE03 RE98 DE91 DE92 DE01 CE10 CE92 CE94 RE93 DE95 CE93 RE18 RE13 QE93 QE92 DE90 CE91 CE90 DE96 QE90 RE94 DE02 RE90 LE10 RE96 CE95 PJ80A RE97 DE03 DE97 QE95 RE19 LE90 QE02 LE92 RE11 RE05 P819 FE20 QE10A RE87 RE06 CE85 DE07 QE86 RE86 QE01 CE05 QE10 QE11 RE88 RE02 RE85 DE05 RE10 DE06 RE03 CE12 P803...

Page 31: ... 35 36 SIGNAL BOARD PD2238C1 U001 BOTTOM FOIL SIDE 1 2 3 4 A B C SIGNAL BOARD PD2238C1 U001 TOP COMPONENT SIDE 4 3 2 1 C B A ...

Page 32: ...lerance carbon resistor unless otherwise noted as the following marks 1 2R Metal or Metal oxide of 1 2 watt 1 2S Carbon compsistion of 1 2 watt 1RF Fuse resistor of 1 watt 10W Cement of 10 watt K 10 G 2 F 1 2 CAPACITOR Unless otherwise noted in schematic all capacitor values less than 1 are expressed in F and the values more than 1 in pF All capacitors are ceramic 50V unless otherwise noted as the...

Page 33: ...INC I2C SHEET 302 28 60 HDMI Rx 2 Video Audio SHEET 303 29 60 HDMI Rx 3 PWR Audio SHEET 304 30 60 HDMI AUDIO PLL SHEET 305 31 60 HDMI AUDIO DAC SHEET 306 32 60 HDMI AUDIO OUT SHEET 307 33 60 HDMI CONTROLLER SHEET 308 34 60 EEPROM1 SHEET 309 35 60 EEPROM2 SHEET 310 36 60 MICRO I O SHEET 400 37 60 OCM MEMORY I F SHEET 401 38 60 FLASH MEMORY SHEET 402 39 60 SYNC SEPA SHEET 403 40 60 E2P OTHER SHEET 4...

Page 34: ... OUT 2 OSD 8DET CVBS S ANALOG FRONT END 8DET OUT 3 YCbCr VIDEO DEC OUT 4 DCDi CVBS S MADi S DET SCALING CVBS DTV MUX BEP LVDS QR03 MC14053BF FB SW 5V 2nd CHANNEL DIGITAL INPUT A PROCESS HDMI DIGITAL INPUT B MICRO PROCESSOR STAND BY MICRO TIF VIDEO SYSTEM CVBS S RGB RGB FB CVBS LVDS LCD EEPROM FLASH ROM SCART 1 SCART 2 SCART 3 EXT 4 EXT 5 FRONT PC SCART 3 SEL OUT SCART 2 TV OUT SCART 1 TV OUT ...

Page 35: ...SC4 IN LR8 LR9 LR10 LR11 I2S IN1 9V RESET I2S OUT I2S CORTETZ SCALER VCD µcom Delay I2S OUT MSP_RESET DVI_SW1 DVI_SW2 ph2S WOOFER SW ph2S Variable Fix AUDIO SYSTEM AD MTS Demod SCART Input Select AD TIF SCART Output Select Source Select DA APRO TV DTV E1 SC full E2 SC full E3 SC AV E4 CS E5 front HDMI 1 A HDMI 2 A HDMI D PC DA HDMI BS_TV_MUTE EXT MUTE MUTE MONI_SW Audio Out Fix Variable Woofer Out...

Page 36: ...NT VIDEO INPUT 480i 480p 576i 576p 720p 50 60 Hz 1080i 50 60 Hz terminals the signal format These signal formats are converted to match the number of pixels of the LCD panel Color system PAL SECAM NTSC 3 58 4 43 Aspect ratio 16 9 Visible size diagonal 106 7 cm Number of pixels 1366 H dots 768 V dots Audio power 10 W 10 W 10 THD Speakers Main 60 120 mm 4pcs Tweeter 33 mm round 2pcs Input Output ter...

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