Toshiba 20AF43 Service Manual Download Page 33 | Manualshive

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PCB060
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Summary of Contents for 20AF43

Page 1: ...SERVICE MANUAL COLOR TELEVISION DOCUMENT CREATED IN JAPAN Mar 2005 20AF43 FILE NO 050 200309 ...

Page 2: ...which has the same character Especially 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...

Page 3: ...ORY IC ELECTRICAL ADJUSTMENTS BLOCK DIAGRAMS PRINTED CIRCUIT BOARDS MAIN CRT VMCOIL SCHEMATIC DIAGRAMS MICON CHROMA DEFLECTION POWER SOUND TUNER STEREO AV COMB FILTER CRT SVM 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 5 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 7 G...

Page 4: ...H 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 105 W at AC 120 V 60 Hz Stand by at AC 3 W at AC 120 V 60 Hz Per Year kWh Y...

Page 5: ...ff Timer Yes Color Stream DVD DTV Yes Control Level Yes Volume Yes Brightness Yes Contrast Yes Color Yes Tint NTSC Only 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 Yes 16 9 Yes G 8 OSD Language English French Spanish G 9 ...

Page 6: ...s CH Down Yes Volume Up Yes Volume Down Yes C C TV Caption Text Yes CH1 CH2 Yes TV Video Input Select Yes CH RTN Quick View Yes SLEEP Yes RECALL Call Yes Reset Yes Menu Enter Yes Mute Yes Exit Yes MTS Audio Select Yes Fav Up Yes Fav Down Yes 16 9 Yes Multi Brand Keys CH Up VCR Yes CH Down VCR Yes Pause Still Yes TV VCR VCR Yes FF Yes Rew Yes Rec Yes Play Yes Stop Yes TV Yes VCR Yes Cable Yes DVD Y...

Page 7: ...es Game Timer Max Time 120 Min Yes Energy Star Yes Favorite CH Yes Surround 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 Ins...

Page 8: ...2 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 590 x 484 x 446 5 G 15 Weight Net Approx 23 kg 50 6 lbs Gross Approx 26 5 kg 58 3 lbs 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 ...

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 be always 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: ...mote control to select CUT OFF Adjust the Screen Volume until a dim raster is obtained 2 3 WHITE BALANCE NOTE Adjust after performing CUT OFF adjustment 1 2 3 4 5 6 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 ...

Page 14: ...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 10 SUB TINT SUB COLOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Fig 2 1 Receive the color bar pattern RF Input Connect the oscilloscope to TP806 Using the remote control set the brightness contrast color and tint to normal position Activate the adjustment mo...

Page 15: ...CH UP button once the set to SEP 2 mode Then perform the above adjustment 4 Method 2 1 2 3 4 5 6 7 8 9 Set the multi sound signal generator L ch 1KHz R ch Non input and receive the RF Connect the oscilloscope to the Audio Out Jack R ch Press the AUDIO SELECT button on the remote control to set to the stereo mode Activate the adjustment mode display of Fig 1 1 and press the channel button 34 on the...

Page 16: ...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 17: ...P502 TP003 VR502 CP101 CP801A J704 J702 J1001 J705 J706 J707 CP1001 OS101 CP802A 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 CD801 CD802 CD851 CD1001 ...

Page 18: ...T 2 VIDEO SW C IC IC1503 MM1501XNRE 6 4 6 Vin1 Vin2 V OUT 3 S JACK J702 4 LINE1 REAR J701 6 LINE2 REAR J703 6 FRONT VIDEO J705 2 2 YUV_IN REAR J704 3 5 2 STEREO IC IC902 AN5829S 24 14 23 3 6 4 2 AUDIO SW L IC IC702 MM1501XNRE Vin1 Vin2 V OIT FRONT AUDIO L J706 FRONT AUDIO R J707 2 3 2 3 2 6 4 2 AUDIO SW R IC IC702 MM1501XNRE Vin1 Vin2 V OIT 2 3 30 19 TONE IC IC302 AN5891SA E1V 16 20 1 7 BBE IC IC3...

Page 19: ...R001 W027 W101 W109 W047 W098 C507 C535 R539 W161 CP802A CP851A W023 W041 W099 W114 W102 W104 W106 W112 R124 W094 W111 W044 TU001 D001 D709 W062 W133 C701 C702 C728 R710 C711 C707 C708 C1004 C1007 C1009 C1008 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 W14...

Page 20: ...8 C724 C727 C737 IC701 IC702 C706 R730 R736 R721 Q712 Q711 R711 R708 R725 R704 R706 R705 R1013 Q1001 R1003 R1011 R1004 R1010 C1010 C1012 Q709 R709 R006 IC1503 IC1502 C1512 C1516 R1529 R1528 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 ...

Page 21: ...52 J801 R872 D855 R869 R875 R871 D856 R866 D853 R868 R873 R874 R876 R870 R867 C 8 0 8 L802 L803 L804 C862_1 C863_1 D858 D857 W006 W004 D854 W009 B853 C858 C859 Q858 Q859 HS851 CP852B S851 S852 C821_1 R814 R813 R810 R815 R809 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 D804 D805 W001 D807 D809 W007 CP851B CP802B CP801...

Page 22: ... 4 5 6 7 8 X101_1 8MHz 100CT8R005 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 R25 1911 BT001 R03 AB E_20_T BT002 R03 AB E_20_T IC101 OEC7090A 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 37 38 39 4 40 41 42 5 6 7 8 ...

Page 23: ... 1 50V KA C627 1 50V KA C618 1 50V KA C642 1 50V KA C611 1 50V KA C630 0 47 50V KA D611 SB290S D610 SB290S D601 1SS133 D608 11E1 EIC D605 1SS133 D606 1SS133 D607 1SS133 Q603 KTC3875S_Y_RTK 6dB AMP Q610 KTC3875S_Y_RTK SVM Q607 KTC3203_Y AT 5V REG Q606 KTC3209_Y P CON 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...

Page 24: ... 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 R437 1 1 2W R443 150K 1 2W R420 2 7 1 2W R417 39K R415 820 R404 100 R430 82K 1 2W R416 3 3 1 2W R427 680 1 2W R422 560 1 2W R418 560 1 2W R432 8 2K 1 2W R401 4 7K R407 1 2K R428 100 ...

Page 25: ...TER WHEN THE COLOR BROADCAST NOTE THE DC VOLTAGE AT EACH PART WAS MEASURED R503 10K 1 4W R537 100K 1 4W R516 10K R532 1 5K R510 100 1 4W R553 6 8K 1 2W R540 1 2M 1 4W R539 1 2M 1 4W R544 270 1 4W R543 1K 1 4W R508 100 1 4W R512 1K 1 2W R511 22K R519 10K R545 150 1 4W R533 270 R554 100K 1 2W R506 6 8K 1 4W R513 10K R505 10K 1 4W R507 82K 1 4W R547 100 1 4W R535 3 9K 1 4W R536 47K 1 4W R525 15K R524...

Page 26: ... 10K R313 1K 1 4W R1002 270 1 2W R1001 270 1 2W R1009 10K 1 4W R314 220K R311 10K R1011 10K R1013 10K R303 100 1 4W R302 2 7K 1 4W R301 2 7K 1 4W R304 100 1 4W R1010 10K C320 56P CH C322 56P 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 C1012 0 0047 B C1010...

Page 27: ... R006 100 R001 68K 1 2W R002 68K 1 2W R904 220 1 4W R905 56K 1 4W C005 0 1 F 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 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 AUDIO...

Page 28: ...ED R701 22 1 4W R702 22 1 4W R703 2 2K R729 75 R726 1K R733 1K R727 75 R734 1K R728 1K R735 75 R739 75 R705 3 3K R706 3 3K R709 270 R725 75 R736 75 R730 75 R721 68 R708 1K R704 1K R711 1K R710 1K 1 4W R745 1K R746 1K R724 75 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 C734 0 1 B C706 0 1 F C742 0 0056 B C719 1 B C720 1 B C741 0 0056 B D709 MTZJ6 2B D...

Page 29: ... 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 W804 C1510 100 6 3V YK C1528 100 16V YK C1501 100 6 3V YK C1502 100 6 3V YK C1518 1 50V KA C1520 100 6 3V YK C1525 100 6 3V YK C1530 47 16V YK C1535 10 16V KA Q1508 KTC3875S_...

Page 30: ...47 16V YK C809 1 250V YK D855 1SS133 D802 1SS133 D809 1SS133 D853 1SS133 D854 1SS133 D858 10ELS2N D857 10ELS2N D856 1SS133 D852 1SS133 D806 1SS133 D805 1SS133 D804 1SS133 D801 1SS133 D807 1SS133 D808 1SS133 D803 1SS133 Q802 KTC4217 GREEN AMP Q812 KTC3199_Y BLUE AMP Q855 KTC3198 SWITCHING Q859 2SC4793 SWTCHING Q856 KTC3198 SWTCHING Q852 KTC3198 AMP Q854 KTC3198 BUFFER Q853 2SC752 G TM _Y AMP Q801 K...

Page 31: ...5µs 1 0V 5ms 200mV 5ms 5 0V 5ms 10V 22 1ms 50mV 1ms 200mV 23 1ms 100mV 24 1ms 100mV 25 4 50µs 1 0V 20µs 50V 19 20µs 2 0V 20 21 20µs 200V The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE DEFRECTION SOUND ...

Page 32: ...1ms 5 0V 27 20µs 200mV 29 20µs 50V 37 20µs 200mV 28 20µs 50V 38 20µs 50V 39 WAVEFORMS The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE AV ...

Page 33: ...AL EXPLODED VIEW I 1 120 201 201 201 201 116 118 118 PCB060 VM COIL PCB ASS Y 115 206 202 202 202 202 202 202 122 202 204 113 112 125 112 203 119 117 203 119 202 202 120 101 124 123 102 103 104 105 107 108 108 106 114 109 101 110 110 204 111 204 203 119 117 203 119 202 202 120 120 ...

Page 34: ...AD300519 82A40B0104 FLAT WASHER 121 BZ710260 899HV3T000 HOLDER ANODE WIRE 122 AE000005 702WPA0988 CABINET BACK 123 AE000006 7220001119 SHEET CSA WARNING 124 AE000007 7220001107 SHEET HWC 125 AE000008 7260000345 SHEET SERVICEMAN 201 AD302054 8141J50C54 SCREW TAP TITE P GW22 5x35 202 BZ710035 8117540A64 SCREW TAPPING B0 TRUSS 4x16 203 BZ710034 8117140A24 SCREW TAPPING B0 PAN 4x12 204 BZ710031 811063...

Page 35: ...50 OHM 2W CAPACITORS C408 BZ110032 E5EZF3102M CE 1000 UF 25V C413 AD301977 E0ELF4102M CE 1000 UF 35V C418 BZ110136 P4J7F3394J CMPP 0 39 UF 250V PMS C420 AD301978 P4N8FJ133H CMPP 0 013 UF 1 25KV C425 BZ110182 C03L0R713K CC 0 001 UF 2KV R C426 AD300061 E5EZFD220M CE 22 UF 250V C430 BZ110195 E02LU8220M CE 22 UF 100V C501 BZ110053 E02LF3102M CE 1000 UF 25V C502 BZ110182 C03L0R713K CC 0 001 UF 2KV R C5...

Page 36: ... D602 BZ410058 D97U08R21B DIODE ZENER MTZJ8 2B T 77 D603 AD300670 D97U01501B DIODE ZENER MTZJ15B T 77 D604 AD300070 D97U01201B DIODE ZENER MTZJ12B T 77 D605 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D606 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D607 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D608 BZ410043 D2WT011E10 DIODE SILICON 11E1 EIC D610 BZ410099 D2W0B290S0 DIODE SILICON SB290S B EI...

Page 37: ...TOR SILICON KTA1504S_Y_RTK Q709 BZ510108 TAAA1504SY TRANSISTOR SILICON KTA1504S_Y_RTK Q711 BZ510109 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q712 BZ510109 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q801 BZ510091 TCA0042170 TRANSISTOR SILICON KTC4217 O Y Q802 BZ510091 TCA0042170 TRANSISTOR SILICON KTC4217 O Y Q803 BZ510091 TCA0042170 TRANSISTOR SILICON KTC4217 O Y Q810 AD301032 TCATC3199Y TRA...

Page 38: ...10 AD301991 A3M701Z010 PCB ASS Y TMC559A PCB060 AD301992 A3M701Z060 PCB ASS Y TEAA93B PCB110 AD301993 A3M701Z110 PCB ASS Y TCA391B MISCELLANEOUS B401 BZ310129 024HT03564 CORE BEADS W4BRH3 5X6X1 0 B402 BZ310129 024HT03564 CORE BEADS W4BRH3 5X6X1 0 B403 BZ310122 024HT03563 CORE BEADS W4BRH3 5X6X1 0X2 B405 BZ310129 024HT03564 CORE BEADS W4BRH3 5X6X1 0 B501 BZ310045 024AT03481 CORE BEADS BL02RN1 R62T2...

Page 39: ...005 06710T0006 HOLDER FUSE EYF 52BC FH502 BZ614005 06710T0006 HOLDER FUSE EYF 52BC OS101 AD301048 0773071001 REMOTE RECEIVER RPM7138 H5 RY501 AD300114 0560V20115 RELAY ALKS321 SP1001 AD301050 070C457003 SPEAKER SG05K07BRA SP1002 AD301050 070C457003 SPEAKER SG05K07BRA TH501 AD302000 D8EE0B1400 DEGAUSS ELEMENT B59203 S1060 B14 TM101 AD302001 076R0GF010 TRANSMITTER R25 1911 TU001 AD301800 0163300001 ...

Page 40: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...

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