Toshiba 27AFX55 Service Manual Download Page 44

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TOSHIBA CORPORATION

1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN

Summary of Contents for 27AFX55

Page 1: ...SERVICE MANUAL COLOR TELEVISION DOCUMENT CREATED IN JAPAN July 2005 27AFX55 MFR S VERSION A FILE NO 050 200526 ...

Page 2: ...ally as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark the designated parts must be used 4 PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING There are parts which use the insulation material such as a tube or tape for safety or which are assembled in the condition that these do not contact with the printed board The...

Page 3: ...ure soldering iron please be carefull not to heat too long Pb free solder will tend to splash when heated too high about 1100 F 600 C All products with the printed circuit board with PbF printing must be serviced with lead free solder When soldering or unsoldering completely remove all of the solder from the pins or solder area and be sure to heat the soldering points with the lead free solder unt...

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

Page 5: ...ng 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 kWh Year Protector Power Fuse Yes ...

Page 6: ... Yes On Off Timer Yes Color Stream DVD DTV Yes Control Level Yes Volume Yes Brightness Yes Contrast Yes Color Yes Tint Yes Sharpness Yes Tuning No Bass Yes Treble Yes Balance Yes Back Light No 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 Rating No 16 9 Yes G 8 OSD Language English French Spanish G 9 Cl...

Page 7: ...CH Down Cursor Down Yes Volume Up Cursor right Yes Volume Down Cursor Left Yes TV Caption Text Yes CH1 CH2 Yes TV Video TV AV Yes CH RTN Quick View Yes Sleep Yes DISPLAY RECALL CODE Yes Reset Yes Menu Enter DVD Menu Yes Mute Yes Exit Yes MTS Audio Select Yes Fav Up Yes Fav Down Yes 16 9 GUIDE Yes Multi Brand Keys CH Up VCR Yes CH Down VCR Yes Pause Still Yes TV VCR VCR Yes FF Yes Rew Yes Skip Yes ...

Page 8: ... Time 120 Min Yes Energy Star No Favorite CH Yes Surround Yes Power On Memory Yes 16 9 Mode Yes 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 Plug No Service Station List No Important Safety I...

Page 9: ...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 2lbs Gross Approx 46 5 kg 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 Material Double Brown Dimensions W x D x H mm 850 x 620 x 665 Design As per Buyer s Des...

Page 10: ...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 11: ... the IC leads using a blower type IC desoldering machine Refer to Fig 2 2 2 Fig 2 2 NOTE Do not rotate or move the IC back and forth until IC can move back and forth easily after desoldering the 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 machine Refer to F...

Page 12: ...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 13: ...L UP DOWN button on the remote step through the ADDRESS until required ADDRESS to be changed is reached Press ENTER to select DATA When DATA is selected it will blink Again step through the DATA using VOL UP DOWN button until required DATA value has been selected Pressing ENTER will take you back to ADDRESS for further selection if necessary Repeat steps 3 to 6 until all data has been checked When...

Page 14: ...25 26 27 28 29 30 31 32 33 34 35 2 BASIC ADJUSTMENTS 2 1 CONSTANT VOLTAGE 1 2 3 Place the set in AV MODE without signal Connect the digital voltmeter to the TP003 Adjust the VR502 until the digital voltmeter is 135 0 5V 2 2 CUT OFF 1 2 3 4 5 Place the set in Aging Test for more than 15 minutes Place the set in AV MODE without signal Using the remote control set the brightness and contrast to norma...

Page 15: ...s the channel button 07 on the remote control to select V SIZE Press the VOL UP DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on upside and downside becomes 9 3 2 6 FOCUS 1 2 3 Receive the monoscope pattern Turn the Focus Volume fully counterclockwise once Adjust the Focus Volume until picture is distinct 2 5 TINT 1 2 3 4 5 6 7 8 9 Receive the color bar pattern RF Inp...

Page 16: ...til the right and left vertical lines are straight In the case the right and left vertical lines are not straigh Please Activate the adjustment mode display of Fig 1 1 and press the channel button 31 on the remote control to select CORNER Press the VOL UP DOWN button on the remote control until the right and left vertical lines are straight 2 16 TRAPEZIUM 1 2 3 4 Receive the cross hatch signal fro...

Page 17: ...t until the R ch output becomes minimum Set the multi sound signal generator L ch Non input R ch 1KHz and receive the RF Connect the oscilloscope to the Audio Out Jack L ch Activate the adjustment mode display of Fig 1 1 and press the channel button 35 on the remote control to select SEP 2 Press the VOL UP DOWN button on the remote control to adjust it until the L ch output becomes minimum The out...

Page 18: ...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 19: ...03 VR502 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 POWER PCB CP802A CD801 ...

Page 20: ... V OUT IC IC401 LA78041 CRT V801 15 16 14 B OUT G OUT R OUT 33 BLANK Q803 Q812 BLUE AMP Q802 Q811 GREEN AMP Q801 Q810 RED AMP FB401 Q405 Q402 H OUT H DRIVER 5 1 16 18 3 COMB FILTER IC IC1501 LA76605M TLM Y OUT C OUT Y IN 4 2 Vin1 Vin2 V OUT 2 6 4 6 Vin1 Vin2 V OUT 3 4 6 LINE2 REAR J703 6 2 5 YUV_IN REAR J704 3 2 2 24 14 23 3 6 4 2 Vin1 Vin2 V OUT 2 3 2 3 2 6 4 2 Vin1 Vin2 V OUT 2 3 30 19 TONE IC I...

Page 21: ...111 W044 TU001 D001 D709 W062 W133 C701 C702 C728 R710 C711 C707 C708 C1004 C1009 C1008_1 IC1001 HS1001 R1009 W803 W136 W137 W130 C1005 W138 W072 W134 W060 C1518 C1510 L1505 L1503 L1502 L1508 C1520 C1501 C1502 L1511 C1528 L1510 C1525 W156 W858 W166 W077 W076 C001_1 L1501 C1532 W146 W145 C642 C605 D602 D601 R603 W162 X602 C630 C627 C622 Q607 W075 W058 W070 W073 W108 W107 W030 C621 W061 W069 C618 W0...

Page 22: ... R711 R708 R725 R704 R706 R705 R1013 Q1001 R1003 R1011 R1004 R1010 C1010 C1012 Q709 R006 C1512 C1516 R1505 Q1503 C1513 C1517 R1506 R1507 C1519 C1509 C1515 C1504 R1504 C1514 R1503 C1506 C1507 IC1501 C1503 R1502 C1521 C1508 R1508 Q1504 R1509 R1510 C1531 Q1508 R1530 C1505 Q1507 R1516 C1526 R1518 R1519 C1523 C641 R1520 C1533 C136 C137 C138 C632 R618 C631 C624 C614 C607 R617 C640 R628 Q603 R604 R625 R1...

Page 23: ...01 L802 L803 L804 C863_1 D858 D857 W006 W004 D854 W009 B853 C858_1 C859_1 Q858 Q859 HS851 CP852B S851 S852 R814 R813 R810 R815 R811 C804 R817 C806 R821 R819 C805 R812 R862 R863 R865 R864 C857 R858 R861 R860 C855 R854 C856 R859 R856 R853 CP852 W806 R855 W001 D807 D809 W805 W007 CP851B CP802B CP801B D808 W008 W811 W003 C809 R822 W820 R820 C 8 0 8 J801_2 W823 W802 W821 W807 W808 W890 W822 W809 W810 C...

Page 24: ...4 5 6 7 8 X101_1 100CT8R005 8MHz SW101 EVQ21505R CH UP SW103 EVQ21505R VOL UP SW102 EVQ21505R CH DOWN SW104 EVQ21505R VOL DOWN SW105 EVQ21505R POWER D109 SLR 342VCT32 POWER ON CP101 173979 7 1 2 3 4 5 6 7 TM101 076D0LR010 BT001 GR03X SP2 BT002 GR03X SP2 Vout B GND OS101 RPM7138 WH5 1 2 3 IC101 OEC7090B MICON IC 1 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 27 28 29 3 30 31 32 33 34 35 36 ...

Page 25: ...6V YK C611 1 50V KA C642 1 50V KA C603 47 16V YK C602 47 16V YK D605 1SS133 D601 1SS133 D608 11E1 EIC D606 1SS133 D607 1SS133 Q603 KTC3875S_Y_RTK 6dB AMP Q610 KTC3875S_Y_RTK SVM Q607 KTC3203_Y AT 5V REG Q605 KTC3875S_Y_RTK 6dB AMP Q611 KTC3209_Y P CON 8V REG Q602 KTC3209_Y P CON 5V REG Q604 KTC3209_Y P CON 5V REG Q601 KTC3209_Y P CON 8V REG Q613 KTC3875S_Y_RTK SVM OFF X602 100CT3R505 3 579545MHz C...

Page 26: ...OTE THE DC VOLTAGE AT EACH PART WAS MEASURED R432 8 2K 1 2W R462 10K R461 2 2K R455_1 220 1 2W R456 5 6K 1 2W R457 4 7K 1 4W R458 1K R449 27K R448 56K R437 1 1 2W R421 560 1 2W R429 560 1 2W R433 560 1 2W R409_1 1K R443 150K 1 2W R420 2 2 1 2W R417 33K R415 820 R430 82K 1 2W R427 820 1 2W R418 820 1 2W R406 470 1 2W R401 4 7K R407 1 2K R428 100 1 4W R422 680 1 2W R416 2 2 1 2W R403 1K R404 100 R45...

Page 27: ...C VOLTAGE AT EACH PART WAS MEASURED R510 100 1 4W R511 22K R512 2 2K 1 2W R535 3 9K 1 4W R500 2 7M 1 2W 10 R553 33K 1 2W R540 1 2M 1 4W R539 1 2M 1 4W R516 10K R545 56 1 4W R533 270 R554 100K 1 2W R506 6 8K 1 4W R513 10K R505 10K 1 4W R547 100 1 4W R525 15K R524 3 3K 1 4W R515 10K 1 4W R520 1 5M 1 2W R546 100 1 4W R532 1 5K R503 10K 1 4W R544 270 1 4W R519 10K R543_1 1K 1 2W R537 33K 1 4W R507_1 8...

Page 28: ...0K R313 1K 1 4W R1002 390 1 2W R1001 390 1 2W R1009 10K 1 4W R314 220K R311 10K R1011 10K R1004 8 2K R1003 8 2K R1013 10K R303 100 1 4W R304 100 1 4W R1010 10K R302 2 7K 1 4W R301 2 7K 1 4W C320 47P CH C322 47P CH C326 0 033 B C324 0 0033 B C323 0 0033 B C325 0 033 B C301 0 033 B C312 0 01 B C1005 220P B C334 1 B C311 0 1 B C315 0 1 B C303 0 01 B C310 0 033 B C313 0 01 B C307 0 015 B C309 0 039 B ...

Page 29: ... R006 100 R001 100K 1 2W R002 100K 1 2W R904 220 1 4W R905 56K 1 4W C912 0 022 B C908 0 022 B C911 0 047 B C913 0 1 B C917 0 1 B C915 0 1 B C918 0 1 B C005 0 1 F C002 0 1 B W830 W829 W820 W819 W812 D001 MTZJ33B C902 1 50V KA C901 1 50V KA C919 10 50V YK TUNER 5V TUNER_VIDEO P CON 8V B P CON 5V P CON B GND AFT SCL SDA J_AUDIO_OUT_L J_AUDIO_OUT_R SW_AUDIO_L SW_AUDIO_R J_AUDIO_OUT_L J_AUDIO_OUT_R AUD...

Page 30: ...MEASURED R710 1K 1 4W R711 1K R739 75 R703 2 2K R724 75 R745 1K R746 1K R701 560 1 4W R702 220 1 4W R729 75 R726 1K R733 1K R727 75 R734 1K R728 1K R705 3 3K R706 3 3K R725 75 R736 75 R730 75 R708 1K R704 1K R735 75 R721 68 R709_1 270 1 4W C734 0 1 B C742 0 0056 B C741 0 0056 B C736 0 0056 B C738 0 0056 B C725 1 B C722 1 B C735 0 0056 B C737 0 0056 B C727 1 B C724 1 B C706 0 1 F C719 1 B C720 1 B ...

Page 31: ... 1 B C1509 0 01 B C1513 0 1 B C1517 100P CH C1519 0 1 B C1531 0 01 B C1504 0 1 B C1505 1 B C1508 0 1 B C1515 0 1 B C1514 0 1 B C1516 0 1 B C1512 0 1 B C1506 0 1 B C1507 0 1 B C1503 0 1 B C1526 0 01 B C1533 22P CH C1523 0 1 F W848 C1530_1 47 16V KA C1510 100 10V YK C1528 100 16V YK C1501 100 10V YK C1502 100 10V YK C1518 1 50V KA C1520 100 10V YK C1525 100 10V YK C1535 10 25V KA Q1508 KTC3875S_Y_RT...

Page 32: ... 4W R862 3 9K 1 4W R865 56K 1 4W R854 33K 1 4W R853 22K 1 4W R870 1 5K 1 4W R877 68 1 2W R867 10 1 2W R879 2 7 1 2W R880 2 7 1 2W R829 2 7K 1 4W R814 220 1 4W R822 82 1 4W R812 1 8K 1 4W R815 220 1 4W R820 82 1 4W R821 330 1 4W R819 330 1 4W R818 82 1 4W R817 330 1 4W R810 1 8K 1 4W C865 150P 500V B C806 680P CH C858_1 100P 500V B C859_1 100P 500V B C821_1 100P CH C813_1 0 22 TF C861 0 0047 500V B...

Page 33: ...WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME 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 R201 5 6K 1 4W C201 1000 6 3V YK CAUTION DIGITAL TRANSISTOR SUB POWER SCHEMATIC DIAGRAM POWER PCB G 20 G 19 PCB240 CED039 FROM TO CHROMA 5 0 5 0 6 6 5 7 6 6 5 0 Tr_E Tr_B Tr_C ...

Page 34: ...in the schematic diagram NOTE WAVEFORMS H 1 1 1V 0 1µs div 2 1V 1µs div 3 1V 50µs div 4 1V 0 1ms div MICON CHROMA 7 1V 20µs div 9 1V 50µs div 10 2V 20µs div 8 0 5V 10ms div 11 0 5V 20µs div 12 1V 2µs div 13 1V 20µs div 14 2V 20µs div 15 2V 20µs div 16 2V 5ms div 17 20V 5ms div DEFLECTION ...

Page 35: ... the schematic diagram NOTE WAVEFORMS H 2 18 10V 10ms div 19 20V 20µs div 20 2V 20µs div 21 200V 50µs div 37 50V 20µs div CRT SVM SOUND 22 2V 5ms div 38 50V 20µs div 39 50V 20µs div 24 2V 5ms div 26 5V 2ms div 27 5V 2ms div 25 2V 5ms div 28 200mV 20µs div 29 200mV 20µs div AV 23 2V 5ms div ...

Page 36: ... PCB ASS Y 205 204 206 205 206 204 110 209 111 PCB010 MAIN PCB ASS Y 201 201 201 201 107 PCB110 CRT PCB ASS Y 204 109 109 104 PCB060 VM COIL PCB ASS Y 106 109 106 106 106 109 101D 101D 203 101F 207 112 108 207 112 101A 101 101B 105 101G 207 207 112 108 112 202 202 202 202 101C 101E ...

Page 37: ...MECHANICAL EXPLODED VIEW PACKING DIAGRAM 121 122 TM101 117 116 114 118 115 115 119 113 116 I 2 ...

Page 38: ...RE 111 AD301616 761WPA0263 HOLDER JACK 112 AD300518 801WR00001 DAMPER SPEAKER 113 AE007924 723000C938 SHEET BAR CODE 114 AE003028 791AHA0025 FILM BAG 115 AE006347 792AHAA004 PACKAGE TOP 116 AE006348 792AHAA005 PACKAGE BOTTOM 117 AE007925 793ACDA194 GIFT BOX 118 AE006350 795ACAA002 PAD 119 AE000218 795ACA0010 PAD 378x1114 120 AE007926 A3N122J975 INSTRUCTION BOOK KIT 121 AE006363 JA4LD100A POLYBAG I...

Page 39: ...21J R METAL OXIDE 220 OHM 2W R1014 AE006339 R00202821J RC 820 OHM 1 2W CAPACITORS C155 AE004040 P6M900105J CMPL 1 UF 50V TF C408 BZ110032 E5EZF3102M CE 1000 UF 25V C412 BZ110060 P4N8FJ222H CMPP 0 0022UF 1 25KV C413 AD301977 E0ELF4102M CE 1000 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 ...

Page 40: ...VT001330 DIODE SILICON 1SS133T 77 D520 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D523 AD300671 D97U01801B DIODE ZENER MTZJ18B T 77 D524 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D525 AD300671 D97U01801B DIODE ZENER MTZJ18B T 77 D528 BZ410021 D97U05R61B DIODE ZENER MTZJ5 6B T 77 D601 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D602 BZ410058 D97U08R21B DIODE ZENER MTZJ8 2B T 77 D604 AD300070 ...

Page 41: ...NSISTOR SILICON KTC3875S_Y_RTK Q604 BZ510105 TCAT03209Y TRANSISTOR SILICON KTC3209_Y AT Q605 BZ510109 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q607 BZ510070 TCAT032034 TRANSISTOR SILICON KTC3203_Y AT Q610 BZ510109 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q611 BZ510105 TCAT03209Y TRANSISTOR SILICON KTC3209_Y AT Q613 BZ510109 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q614 BZ510108 TAAA150...

Page 42: ... EVQ21505R VARIABLE RESISTORS VR401 BZ210218 V1K63H3BTE VOLUME SEMI FIXED NVG6TLTAB222 VR502 BZ210101 V1163H4BTC VOLUME SEMI FIXED EVNCYAA03BE4 P C BOARD ASSEMBLIES PCB010 AE006334 A3N120J010K PCB ASS Y CMD016A PCB060 AE006336 A3N120J060K PCB ASS Y CED037A PCB110 AE006337 A3N120J110K PCB ASS Y CCD014A PCB240 AE006338 A3N120J240K PCB ASS Y CED039A MISCELLANEOUS B401 BZ310129 024HT03564 CORE BEADS W...

Page 43: ...ANSFORMER FLYBACK FSU27A004_M FH501 AE002634 06710T0009 HOLDER FUSE EYF 52BCY FH502 AE002634 06710T0009 HOLDER FUSE EYF 52BCY OS101 AD301048 0773071001 REMOTE RECEIVER RPM7138 WH5 RY501 AE006070 0560X20118 RELAY G5PA 1 SA WEC SP1001 AE006333 070W546010 SPEAKER MSF 18D5SB05W BL TH501 BZ410079 DF5EL3R0A0 DEGAUSS ELEMENT ZPB45BL3R0A TM101 AE007928 076D0LR010 TRANSMITTER ORT205U2005018 E TU001 AE00606...

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

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