Toshiba 24AF42, Service Manual

Page 1: ...SERVICE MANUAL COLOR TELEVISION FILE NO 050 200203 24AF42 DOCUMENT CREATED IN JAPAN Mar 2002 ...

Page 2: ...erefore 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 a...

Page 3: ...eceive CH Destination Others 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 125 W at AC 120 V 60 Hz Stand by at AC 4 W at AC 120 V 60 Hz Per Year k...

Page 4: ...tream 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 No G 8 OSD Language English French Spanish OSD Language Setting English G 9 C...

Page 5: ...it Yes MTS Audio Select Yes Fav Up Yes Fav Down 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 CODE Yes G 11 Features Auto Degauss Yes Auto Shut Off Yes Canal No CATV Yes Anti theft No Rental No Memory Last CH Yes Memory Last Volume Yes V Chip No Type Type BBE Yes Auto Search No CH Allocation No SA...

Page 6: ...SW No Indicator Power Yes RED Stand by No On Timer No Terminals Front Video Input VIDEO3 RCA Audio Input VIDEO3 RCA x 2 Other Terminal Head Phone Rear Video Input Rear1 VIDEO1 RCA Video Input Rear2 VIDEO2 RCA Audio Input Rear1 VIDEO1 RCA x 2 Audio Input Rear2 VIDEO2 RCA x 2 Video Output RCA Audio Output RCA x 2 Euro Scart No Color Stream RCA x 3 S Input Yes Diversity No Ext Speaker No DC Jack 12V ...

Page 7: ... 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 th...

Page 8: ...ng 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 ma...

Page 9: ... 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 installa...

Page 10: ... If you set a factory initialization the total hours is reset to 0 1 2 3 Set the VOLUME to minimum Press both VOL DOWN button on the set and Channel button 6 on the remote control for more than 1 second After the confirmation of using hours turn off the power WHEN REPLACING EEPROM MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC the following steps sho...

Page 11: ...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 1 1 and press the channel button 13 on the remote control to select R BIAS Press the CH UP DOWN button on the remote contro...

Page 12: ...n on the remote control until the SHIFT quantity of the OVER SCAN on upside and downside becomes minimum 1 2 3 4 2 7 HORIZONTAL SIZE 1 2 3 4 Receive the monoscope pattern 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 06 on the remote control to select H SIZE Press the VOL UP DOWN button on th...

Page 13: ...tivate the adjustment mode display of Fig 1 1 and press the channel button 38 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 2 17 CORNER CORR TOP 1 2 3 4 Receive the crosshatch signal from the Pattern Generator Using the remote control set the brightness and contrast to normal position Activate the adjustm...

Page 14: ...rforming 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 s...

Page 15: ...CP803 CP804 TP806 TP804 R808 R804 CP852 CP801_1 CP851_1 J801 CP401 CP851A TP002 CP801A T501 VR502 TU001 CD701A J702 J701 J703 J708 CD701B CP1001 W169 R527 CP101 J704 FB401 CP501 CD801 CD851 CP852B CD803 CRT CRT SPEAKER CD1001 L503 CP502 CRT VM COIL PCB CRT PCB MAIN PCB AC IN CD501 CD852 ...

Page 16: ...3 LINE2 YUV IN Y S INPUT IF 11 SCL 4 SDA 5 30 31 SCL SDA SCL 24 SDA 25 18 19 18 17 12 7 2 5 14 7 20 1 14 7 19 2 24 23 21 22 30 32 31 25 22 20 27 29 9 3 5 2 4 1 7 14 15 13 8 10 Y C L R V 9 15 3 5 T501 18 16 34 28 16 15 14 42 47 55 38 31 8 6 11 51 14 4 6 3 HV 1 7 9 F 10 S 1 5 6 R G B DY 7 F 10 L R V L R V V OUT FBP IN H OUT ABCL B OUT G OUT R OUT C IN CVBSLNT IN IF DET OUT IF IN IF IN 9 10 SCL SDA S...

Page 17: ...04 C1003_1 C747 C711 C1007 L701 W093 W092 C715 W066 W078 C204 C211 W063 W176 W174 L1512 L1510 W115 C1525 W084 W068 W085 W105 R517 W071 W080 W110 W107 D614 D613 D611 D608 W102 W100 W101 W106 W139 W135 W142 W096 W173 W175 W094 W140 W138 W141 W126 W129 W131 W133 R1521 L1511 C311 C313 R631 D615 D612 D606 C608 C604 C216 C214 C616 CD701B W188 L602 D201 L205 L601 W183 R608 C640 W143 L302 L901 C304 C305 C...

Page 18: ...09 C722 C750 C637_1 R716 R714 R717 R723 C793 R770 C728 C712 C721 C745 C746 C737 C739 C738 C708 C707 C730 R705 R702 C743 R708 R713 R751 R741 R1011 R1010 C229 R1522 C1533 R1520 R1519 Q1507 R1516 C641 C1526 Q603 R636 Q604 R635 R138 C1531 Q601 C227 R747 R750 R607 R223 C742 C740 R314 C609 IC902 R906 C922 C927 C930 C932 R904 R905 C926 C928 C931 R731 R727 R739 R737 R738 R732 Q705 Q704 R302 C307 R304 C309...

Page 19: ...R869 R875 R871 D856 R866 D853 R868 R873 R874 R876 R870 R867 C 8 0 8 C815 L802 L803 L804 C862 C863 C866 IC851 D858 D857 W002 W003 D854 W004 B853 C858 C859 Q858 Q859 HS851 CP852B S851 S852 C821 C868 C823 R814 R813 R810 R815 R809 R811 C804 W006 R817 C806 R821 R819 C805 R812 W007 R862 R863 R865 R864 C857 W008 R858 R861 R860 C855 R854 C856 R859 R856 R852 R853 C867 CP852 CP801_1 CP851_1 W805 R855 W005 D...

Page 20: ... 2 3 4 5 6 7 8 9 GND B Vout OS101 RPM7138 H5 1 2 3 IC103 PST600C RESET IC 1 2 3 SW103 SKHVBED010 VOL UP SW102 SKHVBED010 CH DOWN SW104 SKHVBED010 VOL DOWN SW101 SKHVBED010 CH UP SW105 SKHVBED010 POWER IC198 S 24C16AFJA TB 01 MEMORY IC 1 2 3 4 5 6 7 8 Q103 KRC102SRTK X RAY TEST X101 EFOEC8004T4 1 2 3 D109 SLR 342VCT32 POWER ON CP101 173979 7 1 2 3 4 5 6 7 CAUTION DIGITAL TRANSISTOR TM101 SBKMOP006B...

Page 21: ...637_1 3P CH C634 0 22 B C607 0 01 B C202 0 01 B C222 0 01 B C636 0 1 B W842 W843 W804 W838 W840 W844 W820 W839 W833 D201 MTZJ12B D617 MTZJ6 2B D606 MTZJ5 6B C615 100 16V YK C616 47 16V YK C214 10 50V YK C211 0 22 50V YK C213 100 16V YK C203 100 10V YK C935 4 7 50V YK C640 1000 16V YK C608 1 50V YK C216 10 50V YK C604 1 50V YK D605 11E1 EIC D611 1SS133 D613 1SS133 D614 1SS133 D608 1SS133 D612 1SS13...

Page 22: ...ECES N UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION R459_2 1 1W F R416 5 6 1 2W R420 2 2 1 2W R417 33K R442 2 2K 1 4W R407 5 6K R415 820 R412 8 2K R429 680 1 2W R433 680 1 2W R443 68K 1 2W R403 330 R454 220 1 2W R453 10K R457 4 7K 1 4W R456 5 6K R455 220 1 2W R449 100K R458 1K R406 470 1 2W R437 1 1 2W R427 1K 1 2W R428 100 1 4W R432 8...

Page 23: ...UN ATTENTION R544 270 R507_1 56K 1 2W R549 1 5K 1 4W R543 3 3K R500 2 7M 1 2W 10 R518 1 5M 1 2W R515 10K 1 4W R553 6 8K 1 2W R508 6 8K 1 4W R554 100K 1 2W R519 1K 1 2W R511 22K R537 100K 1 4W R532 1 5K R510 100 R505 10K 1 4W R513 10K R516 10K R540 1 2M 1 4W R539 1 2M 1 4W R525 47K R545 150 R533 270 R524 2 2K R547 100 1 4W R548 10K R546 100 1 4W R512 1K 1 4W R520 390 1 4W R536 27K 1 4W R535 10K1 4W...

Page 24: ...1003 330 R1004 330 R333 10K R331 10K R302 20K R304 20K R301 20K R303 20K R330 10K 1 4W R305 10K R335 1K 1 4W C330 0 022 B C333 0 47 B C331 0 022 B C332 0 47 B C334 0 033 B C1010 0 01 B C335 0 033 B C339 0 01 B C338 0 001 B C1012 0 01 B C336 100P CH C337 100P CH C325 0 01 B C309 0 033 B C307 0 0033 B C306 0 0033 B C308 0 033 B W859 C1003_1 470 25V YK C1001 10 50V YK C1002 10 50V YK C1011_1 100 25V ...

Page 25: ...723 470 R711 3 9K R749 3 9K R715 1K R717 470 R748 3 9K R716 470 R770 470 R724 3 3K R725 3 3K R726 270 R751 1K R752 1K R734 10K 1 4W R722 1 5K R737 180K R720 100 1 4W R727 1K R736 1K R738 220K R731 220K R730 180K R718_1 75 R713 68 C740 0 0056 B C742 0 0056 B C734 0 01 B C731 0 01 B C750 1 B C748 0 1 B C727 0 0056 B C726 0 0056 B C744 0 0056 B C743 0 0056 B C720 33P CH C722 1 B C745 1 B C746 1 B C74...

Page 26: ...1527 15K 1 4W R1510 47K R1509 47K C1531 0 01 B C1526 0 01 B C1527_1 0 0012 X C1504 0 1 B C1508 0 1 B C1507 0 1 B C1506 0 1 B C1503 0 1 B C1512 0 1 B C1514 0 1 B C1533 22P CH C1535 0 1 B C1509 0 01 B C1517 100P CH C1513 0 1 B C1519 0 1 B C1521 0 1 B C1523 120P CH C1515 0 1 B C1505 0 1 B W872 W852 W864 W851 W812 C1528 100 16V YK C1530_2 3 3 50V YK C1525 100 6 3V YK C1501 100 6 3V YK C1502 100 6 3V Y...

Page 27: ...K 1 4W R874 68K 1 4W R871 1 5K 1 4W R869 82 1 4W R867 10 1 2W R864 39K 1 4W R828 2 7K 1 4W R830 2 7K 1 4W R856 1K 1 4W R859 2 7K 1 4W R861 33K 1 4W R860 33 1 4W R857 470 1 2W R858 100 1 4W R863 3 9K 1 4W R862 3 9K 1 4W R865 56K 1 4W R854 33K 1 4W R853 22K 1 4W R852 2 2K 1 4W R851 120 1 2W R870 1 5K 1 4W R877 68 1 2W C857 0 001 B C860 0 0047 500V B C821 0 001 B C808 0 001 2KV B C805 330P CH C804 33...

Page 28: ...1V 50µs div 8 0 5V 10ms div 7 1V 20µs div 6 1V 20µs div MICON TUNER The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE CHROMA IF 11 0 5V 20µs div 10 2V 20µs div 13 1V 20µs div 12 1V 2µs div 14 2V 20µs div 15 2V 20µs div ...

Page 29: ...oon number in the schematic diagram NOTE 16 2V 5ms div 17 20V 5ms div 18 10V 10ms div 19 20V 20µs div 20 2V 20µs div 26 5V 2ms div 28 200mV 20µs div 27 5V 2ms div 29 200mV 20µs div 30 2V 20µs div SOUND AV 21 200V 50µs div 23 2V 5ms div 22 2V 5ms div 24 2V 5ms div 25 2V 5ms div DEFLECTION ...

Page 30: ...ing waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE 31 1V 50µs div 32 2V 5ms div 33 2V 5ms div 34 0 5V 20µs div 38 50V 20µs div 39 50V 20µs div 37 50V 20µs div CRT SVM ...

Page 31: ...03 116 102 203 203 203 203 104 119 119 PCB060 VM COIL PCB 105 119 PCB110 CRT PCB 206 207 206 206 206 206 205 207 126 PCB010 MAIN PCB 126 205 101 108 110 109 111 113 112 122 204 202 120 117 202 118 120 201 201 121 121 127 123 204 202 120 117 202 118 120 201 201 121 121 127 107 ...

Page 32: ...A40B0104 FLAT WASHER 122 BZ710039 8995034000 CORD CLIP UL CO 123 AD300430 712WPB0055 DOOR 126 BZ710260 899HV3T000 HOLDER ANODE WIRE 127 AD301137 800WF00051 CUSHION 201 BZ710035 8117540A64 SCREW TAPPING B0 TRUSS 4x16 202 BZ710034 8117140A24 SCREW TAPPING B0 PAN 4x12 203 BZ710264 8111J50D04 SCREW TAPPING A GW22 5x40 204 BZ710031 8110630A04 SCREW TAP TITE P BRAZIER 3x10 205 BZ710018 8107630804 SCREW ...

Page 33: ...TAL OXIDE 100 OHM 2W CAPACITORS C115 AD301302 CHG0B04G2K CC 180 PF 50V B or AD301211 CHGTB04G2K CC 180 PF 50V B C118 AD301021 E02LF0222M CE 2200 UF 6 3V C408 BZ110032 E5EZF3102M CE 1000 UF 25V C412 AD301303 P4N8FJ332H CMPP 0 0033UF 1 25KV or AD301121 P414F9332H CMPP 0 0033UF 1 6KV ECWH C413 AD300067 E02LF4102M CE 1000 UF 35V C418 BZ210173 P4J7F3474J CMPP 0 47 UF 250V PMS C420 AD301122 P4N8FJ183H C...

Page 34: ...605 BZ410043 D2WT011E10 DIODE SILICON 11E1 EIC D606 BZ410021 D97U05R61B DIODE ZENER MTZJ5 6B T 77 D608 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D611 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D612 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D613 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D614 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D615 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D6...

Page 35: ...146R S 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 TRANSISTOR SILICON KTC3199_Y AT Q811 AD301032 TCATC3199Y TRANSISTOR SILICON KTC3199_Y AT Q812 AD301032 TCATC3199Y TRANSISTOR SILICON KTC3199_Y AT Q851 BZ510069 TCATC31980 TRANSISTOR SILICON KTC3198 AT...

Page 36: ...6 120R615901 CORD AC BUSH 0R615901 CD801 AD301129 06CU2A4601 CORD CONNECTOR CU2A4601 CD803 AD300094 06CP83035A CORD CONNECTOR CP83035A CD851 AD301042 06CU253401 CORD CONNECTOR CU253401 CD852 AD301043 06CU232001 CORD CONNECTOR CU232001 CF201 BZ613015 1011T4R504 FILTER CERAMIC EFCT4R5YS5A CF202 AD301044 1022045R74 FILTER SAW SAFGP45M7VFGZ00B CF203 AD300686 1012T4R519 FILTER CERAMIC TRAP TPSRA4M50C00...

Page 37: ...D300624 1001T8R004 CERAMIC OSCILLATOR EFOEC8004T4 X601 BZ613004 100CT3R505 CRYSTAL HC 49 C RESISTOR RC CARBON 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 ...

Page 38: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...