Toshiba 27AFX54, Service Manual

Page 1: ...SERVICE MANUAL COLOR TELEVISION 27AFX54 FILE NO 050 200407 DOCUMENT CREATED IN JAPN April 2004 ...

Page 2: ... when repairing the high voltage pe ripheral circuit use the designated parts and make sure not modify the circuit Repairing except indicates causes rising of high voltage and it emits an X ray from the cathode ray tube 7 PERFORM A SAFETY CHECK AFTER SERVICING Confirm that the screws parts and wiring which were removed in order to service are put in the original positions or whether there are the ...

Page 3: ...L ADJUSTMENTS BLOCK DIAGRAM PRINTED CIRCUIT BOARDS MAIN CRT VM COIL COMB SCHEMATIC DIAGRAMS MICON CHROMA DEFLECTION CRT POWER SOUND TUNER STEREO AV REGULATOR CRT SVM COMB FILTER WAVEFORMS MECHANICAL EXPLODED VIEWS MECHANICAL REPLACEMENT PARTS LIST ELECTRICAL REPLACEMENT PARTS LIST A1 1 A1 1 A1 1 A2 1 A3 1 A3 5 B1 1 B2 1 B2 2 C1 1 C1 1 C1 1 D 1 D 6 E 1 E 2 F 1 F 4 F 5 F 6 G 1 G 2 G 3 G 4 G 5 G 6 G ...

Page 4: ...e CH Destination USA W CATV Tuning System F Synth Input Impedance VHF UHF 75 ohm 2 69 4A A 5 A 1 CH Coverage A I J W W 1 W 84 Intermediate Picture FP 45 75MHz Frequency Sound FS 41 25MHz FP FS 4 50MHz Preset CH No Stereo Dual TV Sound Yes Tuner Sound Muting Yes G 3 Power Power Source AC 120V AC 60Hz DC Power Consumption at AC 135 W at AC 120 V 60 Hz Stand by at AC 3 W at AC 120 V 60 Hz Per Year kW...

Page 5: ...CH Label Yes Favorite CH Yes V Chip Yes Lock Yes On Off Timer Yes Color Stream DVD DTV Yes Image Tilt Yes Control Level Yes Volume Yes Brightness Yes Contrast Yes Color Yes Tint Yes Sharpness Yes Tuning No Bass Yes Treble Yes Balance Yes Image Tilt Yes Stereo Audio Output SAP Yes Video Yes Color Stream Yes Channel TV Cable Yes CH Label Yes Game Timer Yes Sleep Timer Yes Sound Mute Yes V chip Ratin...

Page 6: ...CH Up Yes CH Down Yes Volume Up Yes Volume Down Yes TV Video Input Select Yes ENT CH RTN Quick View Yes Menu FAV Up Yes Menu FAV Down Yes Menu Up Yes Menu Down Yes Mute Yes PIC SIZE 16 9 Yes Light Yes Multi Brand Keys TV CBL SAT VCR DVD Yes DVD Keys Enter Yes TV DVD Keys SLEEP TOP MENU Yes RECALL Call Display Yes Menu Enter DVD MENU Yes Exit DVD CLEAR Yes DVD VCR Keys Pause Still Yes FF Yes Rew Ye...

Page 7: ...rgy Star No Favorite CH Yes Surround Yes 16 9 Mode Yes Color Temparature Control Yes Picture Preference Yes Tilt Correction Yes 2 Tuner P in P No G 12 Accessories Owner s Manual Language English French W Warranty Yes Remote Control Unit Yes Rod Antenna No Poles Terminal Loop Antenna No Terminal U V Mixer No DC Car Cord Center No Guarantee Card No Warning Sheet No Circuit Diagram No Antenna Change ...

Page 8: ...Euro Scart No Color Stream RCA x 3 S Input Yes Diversity No Ext Speaker No DC Jack 12V Center No VHF UHF Antenna Input F Type AC Outlet No G 14 Set Size Approx W x D x H mm 740 x 495 x 574 5 G 15 Weight Net Approx 40 0 kg 88 2 lbs Gross Approx 46 5kg 102 5lbs G 16 Carton Master Carton No Content Sets Material Dimensions W x D x H mm x x Description of Origin No Gift Box Yes Material Double Brown D...

Page 9: ...ed Flip up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support Refer to Fig 1 2 2 DISASSEMBLY INSTRUCTIONS GND on the CRT Screwdriver Alligator Clip Support CRT GND on the CRT Rubber Cap CRT Support Fig 1 1 Fig 1 2 3 After one side is removed pull in the opposite direction to remove the other NOTE Take care not to damage the Rubber Cap INSTALLATION 1 Clean ...

Page 10: ...using a blower type IC desoldering machine Refer to Fig 2 2 2 Fig 2 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desoldering the IC leads completely When IC starts moving back and forth easily after desoldering completely pickup the corner of the IC using a tweezers and remove the IC by moving with the IC desoldering...

Page 11: ...2 8 Thin tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So always be sure to replace the IC in this case Finally confirm the soldering status on four sides of the IC using a magnifying glass Confirm that no abnormality is found on the soldering position and insta...

Page 12: ...e 16 x 16 x hundreds digit value 16 x tens digit value ones digit value C 1 WHEN REPLACING EEPROM MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC the following steps should be taken to ensure correct data settings while making reference to TABLE 1 Table 1 1 2 3 4 5 6 7 8 9 10 11 The unit will now have the correct DATA for the new MEMORY IC Enter DATA ...

Page 13: ...7 Place the set with Aging Test for more than 10 minutes Receive the gray scale pattern from the Pattern Generator Using the remote control set the brightness and contrast to normal position Activate the adjustment mode display of Fig 1 1 and press the channel button 12 on the remote control to select R BIAS Press the CH UP DOWN button on the remote control to select the R BIAS G BIAS B BIAS B DRI...

Page 14: ...ton on the remote control until the AC voltmeter is 85 2mV 2 14 SEPARATION 1 2 1 2 3 4 5 Set the multi sound signal generator for each different L ch and R ch frequency Ex L ch 2KHz R ch 400Hz and receive the RF Connect the oscilloscope to the Audio Out Jack Activate the adjustment mode display of Fig 1 1 and press the channel button 34 on the remote control to select SEP 1 Press the VOL UP DOWN b...

Page 15: ...nd press the channel button 16 on the remote control to select BRI CENT Press the VOL UP DOWN button on the remote control until the brightness step No becomes 60 Receive a broadcast and check if the picture is normal 2 16 TINT COLOR CENT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Receive the color bar pattern Connect the oscilloscope to TP806 Activate the adjustment mode display of Fig 1 1 and press ...

Page 16: ...trol to set to the AV mode Then perform the above adjustments 1 3 Press the TV VIDEO button on the remote control to set to the CS mode Then perform the above adjustments 1 3 2 18 Confirmation of Fixed Value Step No Please check if the fixed values of the each adjustment items are set correctly referring below RF AV CS FUNCTION OSD H H VCO V SHIFT VS CORRECTION BRI MAX BRI MIN CONT CENT CONT MIN N...

Page 17: ...performing adjustments in section 3 1 1 2 3 4 5 Receive the green raster pattern from color bar generator Adjust the pair of purity magnets to center the color on the screen Adjust the pair of purity magnets so the color at the ends are equally wide Move the deflection yoke backward to neck side slowly and stop it at the position when the whole screen is green Confirm red and blue color Adjust the...

Page 18: ...2 CP101 CP801A J704 J702 J1001 J705 J706 J707 CP1001 OS101 CP851A VR401 J701 J703 J708 SPEAKER CRT FB401 TU001 CP501 AC IN CD501 CRT CP852B CP803 CP804 TP806 TP804 R808 R804 CP852 CP851B CP802B CP801B J801 CRT CRT PCB VM COIL PCB MAIN PCB CD803 CD852 CD802 CD851 CD1001 CP401 J709 COMB PCB CP802A CRT CD801 CP403 ...

Page 19: ... 94 Cout Yout Yin Q803 Q812 Q802 Q811 GREEN AMP Q801 Q810 BLUE AMP RED AMP REAR S JACK J702 3 FRONT S JACK J709 4 3 4 LINE1 J701 6 3 2 LINE2 J703 6 3 2 A V_OUT J708 6 3 2 FRONT VIDEO J705 2 3 YUV_IN J704 5 FRONT AUDIO L J706 2 3 FRONT AUDIO R J707 2 3 Q702 BUFFER Q703 BUFFER Q1513 Q5111 Q1510 BUFFER Y IN C IN H OUT V OUT R OUT G OUT B OUT R IN B IN G IN FAST BLK Q709 BUFFER Q1503 Q1505 Q1507 Q1514...

Page 20: ...050 C609 C615 R608 C629 W051 W052 W053 D701 W054 W055 W056 W057 R616 R642 R601 Q601 Q611 Q604 Q602 Q606 C610 W058 W059 W060 W061 W062 W063 R604 W064 W065 W066 W067 W068 W069 W070 W071 W072 J708 J703 J701 D704 D709 J702 J704 W073 W074 W075 C533 W076 W077 W078 C711 W079 W080 C707 C728 W081 W082 W083 W084 D703 D702 W085 W086 L702 C721 W087 W088 W089 L701 C708 C702 W090 W091 C705 C703 W092 C740 C743 H...

Page 21: ...4 C608 C619 C617 C614 C641 R627 R628 C613 C620 C621 R622 R625 R629 R419 R423 R425 R435 R440 R409 C414 R634 C635 Q605 R633 C634 R431 C120 R620 R623 R626 R605 R606 R607 C633 C626 R630 R624 Q603 R619 R631 C627 R621 R613 C601 Q608 R638 C604 R609 C612 C616 R611 R641 R635 R636 R612 C636 C628 R719 R713 R617 C607 R313 C737 R735 Q517 R526 IC501 Q518 R551 R534 R549 R538 R528 R529 R550 R708 R704 Q712 R711 R7...

Page 22: ...1 Q1512 R1535 Q1509 R1525 R1527 C1514 R1538 C1563 CP803 CP804 TP805 TP806 TP804 D801 D802 D803 Q812 Q811 Q810 R830 R828 R829 R808 R804 R806 Q802 Q803 Q801 R818 C813 B852 Q856 Q 8 5 5 Q857 Q854 Q852 Q853 R881 C854 R879 R878 B851 C865 C864 R877 R880 C853 C852 R857 C860 C861 D852 J801 R872 D855 R869 R875 R871 D856 R866 D853 R868 R873 R874 R876 R870 R867 L802 L803 L804 C862_1 C863_1 D858 D857 W006 W00...

Page 23: ...05 27K R134 10K R117 4 7K R124 1K 1 4W R121 1K R122 1K R150 1K R133 1K R125 10K 1 4W R107 10K 1 4W R119 10K R115 4 7K R143 680 R142 680 R141 680 R147 47K WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST NOTE THE DC VOLTAGE AT EACH PART WAS MEASURED OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE ...

Page 24: ...09 100 R623 100 R620 100 R626 100 R631 270 R633 4 7K R634 4 7K R621 3 3K R613 10K R608 3 3K 1 4W R630 560 R619 15K R624 1K WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST NOTE THE DC VOLTAGE AT EACH PART WAS MEASURED OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME V_IN YUV U_IN YUV Y_IN YUV...

Page 25: ...50V YK C426 22 250V YK C407 100 35V YK C443 1 250V YK D417 MTZJ12B D404 MTZJ5 1B D401 MTZJ15B D412 MTZJ15B D403 MTZJ30B D410 MTZJ30B D406 MTZJ5 6B W842 W806 W828 W837 W833 W808 W805 C414 0 33 B C439 0 001 B C419 0 001 500V B C410 0 0022 500V B C416 0 001 B C418 0 43 250V PMS C425 0 001 2KV R C427 0 1 100V MMTS C421 0 018 630V PP C412 0 0022 1 5KV MPP C420 0 013 1 25KV MPP C401 27P 500V SL C417 0 2...

Page 26: ... 21DQ09N D518 21DQ09N D516 1SS133 D519 21DQ09N D522 1SS133 D520 1SS133 D505 30DF6 FC D517 1SS133 D513 1SS133 D510 FE201 6L49 D515 SB10 03A3 D529 1SS133 D511 1N4937 D532 1SS133 D533 1N4937 D526 1SS133 C538 10 16V KA C514 10 50V YK C540 1000 16V YK C539 4 7 100V YK C542 1000 16V YK C501 2200 35V YK C504 10 50V YK D523 MTZJ18B D528 MTZJ5 6B D509 MTZJ18B D514 MTZJ10B D525 MTZJ3 9B D531 MTZJ12B D527 MT...

Page 27: ...H C301 0 033 B C1010 0 0056 B C1012 0 0056 B C303 0 01 B C313 0 01 B C307 0 015 B C312 0 01 B C309 0 039 B C310 0 033 B C325 0 033 B C323 0 0033 B C324 0 0033 B C326 0 033 B C322 47P CH C320 47P CH R302 2 7K 1 4W R314 220K R313 1K R301 2 7K 1 4W R1013 10K R304 100 1 4W R303 100 1 4W R1003 12K R1004 12K R1010 10K R1011 10K R311 10K R1001 390 1 2W R1002 390 1 2W R309 10K R307 20K R305 20K R308 20K R...

Page 28: ...7K 1 2W R010 47K 1 2W R005 100 1 4W WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST NOTE THE DC VOLTAGE AT EACH PART WAS MEASURED OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME P CON 5V TUNER 5V P CON 8V B GND P CON B AFT SCL SDA J_AUDIO_OUT_L J_AUDIO_OUT_R AUDIO_OUT_L AUDIO_OUT_R TUNER_VI...

Page 29: ...C722 1 B C724 0 1 B C704 1 B C720 1 B C714 0 1 B C716 0 1 B C727 0 1 B C741 0 0056 B C742 0 0056 B C745 68P CH C703 1 F C705 1 F C734 0 1 B C725 1 B C719 1 B C738 0 0056 B C736 0 0056 B C744 56P CH C739 0 1 B C712 8P CH C737 0 0056 B C735 0 0056 B R725 75 R703 2 2K R746 3 9K R719 75 R713 75 R735 75 R728 3 9K R734 3 9K R704 1K R708 1K R733 3 9K R726 3 9K R721 68 R745 3 9K R705 3 3K R723 1K R732 1K ...

Page 30: ...CURRENT CONTROL 1 2 3 4 5 6 7 8 Q518 KTC3875S_Y_RTK VOLTAGE CTL Q519 KTC3209_Y 2 5V REG Q517 KTC3875S_Y_RTK VOLTAGE CTL Q516 KTC3209_Y 3 3V REG W804 W803 R534 18K R550 10K R531 1K 1 4W R551 10 R538 10K R549 10K R529 8 2K R526 10 R528 10K OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME P CON 9V UNREG 5V GND SW_VIDEO_OUT COMB_OUT_C COMB_OUT_Y AT...

Page 31: ... 500V B C856 0 01 B C855 560P CH C821_1 100P CH C861 0 0047 500V B C859 100P CH C857 0 001 B C858 100P CH C860 0 0047 500V B C808 0 0022 2KV B C813 0 0022 M R809 100 1 4W R880 2 7 1 2W R878 68 1 2W R828 2 7K 1 4W R822 82 1 4W R802 100 1 4W R810 2 2K 1 4W R801 100 1 4W R858 100 1 4W R854 33K 1 4W R853 22K 1 4W R874 68K 1 4W R876 12K 1 4W R862 3 9K 1 4W R860 33 1 4W R829 2 7K 1 4W R814 220 1 4W R813...

Page 32: ...1531 560 R1530 560 R1534 1 2K R1532 56 R1540 820 R1525 3 3K R1527 1K R1505 100 R1509 820 R1511 1 2K R1515 560 R1516 560 R1513 820 R1520 12K R1521 4 7K R1538 3 3K R1536 820 R1510 820 R1506 100 R1512 1 2K R1518 560 R1514 2 2K R1517 560 R1522 12K R1529 1 2K R1539 3 3K R1537 820 R1542 10K WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST NOTE THE DC ...

Page 33: ...int of the corresponding balloon number in the schematic diagram DEFLECTION MICON SOUND 50ns 1 0V 2 50Ns 1 0V 1 5ms 1 0V 4 5ms 1 0V 3 5ms 10V 18 5ms 10V 17 20µs 10V 20 20µs 10V 19 1ms 500mV 23 1ms 500mV 22 1ms 100mV 25 1ms 100mV 24 20µs 200V 21 5ms 1 0V 16 1ms 2 0V 26 ...

Page 34: ...FORMS NOTE The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram AV CRT SVM 20µs 200mV 28 1ms 2 0V 27 10µs 20V 37 20µs 200mV 29 10µs 20V 38 10µs 20V 39 ...

Page 35: ...B PCB ASS Y 117 122 201 201 201 201 107 PCB110 CRT PCB ASS Y 204 109 109 104 PCB060 VM COIL PCB ASS Y 106 106 102 114 115 115 208 208 208 208 208 203 103 208 208 110 207 112 108 207 112 202 202 110 101A 101 123 123 101B 105 120 119 116 118 123 207 207 110 112 108 112 202 202 110 120 203 121 ...

Page 36: ...MECHANICAL EXPLODED VIEW PACKING DIAGRAM I 2 128 127 125 124 126 126 127 131 132 133 TM101 129 ...

Page 37: ...9A026 BADGE BRAND 119 AE003303 723549A032 AV LABEL 120 AE003304 735WPAA637 BUTTON ASS Y 121 AE003305 735WPAA638 STOPPER BUTTON 2 122 BZ710723 752WSA0033 IF SHIELD BOTTOM 123 AE003026 800WQ0A079 FELT SHEET 124 AE003306 723000C488 SHEET BAR CODE 125 AE003028 791AHA0025 FILM BAG 126 AE003029 792AHAA002 PACKAGE TOP 127 AE003030 792AHAA003 PACKAGE BOTTOM 128 AE003307 793ACDA180 GIFT BOX 129 AE000218 79...

Page 38: ... FUSE 150 OHM 1 2W R881 AD300417 R3X18A560J R METAL OXIDE 56 OHM 2W CAPACITORS C408 BZ210176 E02LF3222M CE 2200 UF 25V C412 AE000911 P4N8FK222H CMPP 0 0022UF 1 5KV C413 AD300066 E02LF4222M CE 2200 UF 35V C418 AE001019 P4J7F3434J CMPP 0 43 UF 250V PMS C420 AD301978 P4N8FJ133H CMPP 0 013 UF 1 25KV C421 AD300048 P3N1F5183J CPP 0 018 UF 630V C425 BZ110202 C0PLRR713K CC 0 001 UF 2KV R C426 BZ110204 E0E...

Page 39: ... D514 BZ410061 D97U01001B DIODE ZENER MTZJ10B T 77 D515 BZ410008 D23U1003A3 DIODE SCHOTTKY SB10 03A3 D516 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D517 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D518 BZ410010 D28T21DQN9 DIODE SCHOTTKY 21DQ09N TA2B1 D519 BZ410010 D28T21DQN9 DIODE SCHOTTKY 21DQ09N TA2B1 D520 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D522 BZ410006 D1VT001330 DIODE SILICON 1S...

Page 40: ... SILICON KTC3198 AT Y GR Q505 BZ510011 TC3T029090 TRANSISTOR SILICON 2SC2909 S T AA Q506 BZ510071 TNAAB05003 COMPOUND TRANSISTOR KRC102SRTK Q507 BZ510069 TCATC31980 TRANSISTOR SILICON KTC3198 AT Y GR Q508 AD300611 TAAT01273Y TRANSISTOR SILICON KTA1273_Y Q509 BZ510105 TCAT03209Y TRANSISTOR SILICON KTC3209_Y AT Q510 BZ510108 TAAA1504SY TRANSISTOR SILICON KTA1504S_Y_RTK Q511 AD300611 TAAT01273Y TRANS...

Page 41: ...L401 AD302359 02ER000001 COIL ER000001 L402 AD300400 022100034A COIL LINEARITY ELH5L4132N L403 AD301606 02DK000058 COIL CHOKE 02DK000058 L404 BZ310004 021679472K COIL 4 7 MH L501 AD301124 029T000101 COIL LINE FILTER 2R2A752F28Y L503 AE003003 028R270013 COIL DEGAUSS 8R270013 L601 AD301989 0216A6330J COIL 33 UH L701 BZ310040 02167F470J COIL 47 UH L702 BZ310040 02167F470J COIL 47 UH L802 AD300123 021...

Page 42: ... A3963WV2 3PD CP502 AD300687 069S420110 CONNECTOR PCB SIDE A1561WV2 2P CP507 BZ614444 069D01001A CONNECTOR PCB SIDE 003P 2100 CP508 BZ614444 069D01001A CONNECTOR PCB SIDE 003P 2100 CP803 AD301996 069S330010 CONNECTOR PCB SIDE A2361WV2 3P CP804 BZ614058 069W010010 CONNECTOR PCB SIDE 005P 2100 CP852 BZ614350 069S230629 CONNECTOR PCB SIDE A2001WV2 3P CD1001 AD302372 06CU14A001 CORD CONNECTOR CU14A001...

Page 43: ...RBON RESISTOR CAPACITORS CC CERAMIC CAPACITOR CE ALUMI ELECTROLYTIC CAPACITOR CP POLYESTER CAPACITOR CPP POLYPROPYLENE CAPACITOR CPL PLASTIC CAPACITOR CMP METAL POLYESTER CAPACITOR CMPL METAL PLASTIC CAPACITOR CMPP METAL POLYPROPYLENE CAPACITOR J2 6 ...

Page 44: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...