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Toshiba 24AF41 Service Manual
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Toshiba 24AF41 Service Manual

Toshiba 24AF41 Service Manual

Service manual
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TOSHIBA
FILE NO.050-200103

SERVICE MANUAL

COLOR TELEVISION
24AF41
DOCUMENT CREATED IN JAPAN, DEC., 2001

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Summary of Contents for Toshiba 24AF41

  • Page 1: Service Manual

    TOSHIBA FILE NO.050-200103 SERVICE MANUAL COLOR TELEVISION 24AF41 DOCUMENT CREATED IN JAPAN, DEC., 2001...

  • Page 2: Servicing Notices On Checking

    SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, Safety is secured against an X-ray by consider- they are indicated with the labels or seals on the ing about the cathode-ray tube and the high cabinet, chassis and parts.

  • Page 3: General Specifications

    GENERAL SPECIFICATIONS G-1.Outline of the Product inch( 600 mmV):Measured diagonally Color CRT 101 degree deflection G-2.Broadcasting System System G-3.Color System NTSC SECAM or Monochrome signal G-4.NTSC Playback(PAL 60Hz) G-5.NTSC 3.58+4.43/PAL60Hz G-6.Antenna Input Impedance VHF/UHF 75 ohm unbalanced G-7.Tuner and Receiving Contactless Electric tuner 1Tuner System 2Tuner System...
  • Page 4 GENERAL SPECIFICATIONS 18.Regulation Safety NEMKO FEMKO DEMKO IEC65 SEMKO HOMOLO SABS SISIR AS3159 DENTORI GOST NONE Radiation SABA HOMOLO CISPR13 DENTORI AS/NZS NONE X-Radiation DHHS DENTORI NONE G-19.Temperature Operation ºC~ 40 ºC Storage ºC~ 60 ºC G-20.Operating Humidity Less than G-21.Clock and Timer Sleep Timer Yes Max 120...
  • Page 5 Auto Shut Off CH Allocation Premiere Canal+ Comb Filter(3LINE) CATV Channel Lock Auto CH Memory Anti-Theft Just Clock Function Hotel Lock Rental Game Position Closed Caption Memory ( Last CH Last Vol.) Stable Sound V-Chip(Toshiba Type) CH LAVEL Favorite CH VM Circuit...
  • Page 6 GENERAL SPECIFICATIONS G-3 2 .Switch Front Power(Tact) Channel Up Volume Up System Select Channel Down Volume Down Main Power SW Sub Power Rear AC/DC TV/CATV Selector Degauss Main Power SW G-33.Magnetic Field BV : +0.45G BV : +0.35G BV : +0.25G BH : 0.18G...

  • Page 7: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction to 1. REMOVAL OF ANODE CAP remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.

  • Page 8: Service Mode List

    SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key for more than 1 second. Set Key Remocon Key Operations Releasing of V-CHIP PASSWORD.

  • Page 9: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: CONSTANT VOLTAGE Read and perform these adjustments when repairing the Set condition is AV MODE without signal. circuits or replacing electrical parts or PCB assemblies. Connect the digital voltmeter to TP002. Adjust the VR502 until the digital voltmeter is 116 0.5V.
  • Page 10 ELECTRICAL ADJUSTMENTS 2-7: HORIZONTAL SIZE 2-12: CORNER CORR TOP NOTE: Adjust after performing adjustments in section 2-6. Receive the crosshatch signal from the Pattern Generator. Receive the monoscope pattern. Using the remote control, set the brightness and Using the remote control, set the brightness and contrast to normal position.
  • Page 11 ELECTRICAL ADJUSTMENTS 2-16: SEPARATION 1, 2 2-19: SUB TINT/SUB COLOR Receive the stereo signal (L=2KHz, R=400Hz). Receive the color bar pattern. (RF Input) Connect the AC voltmeter to AUDIO OUT JACK though Connect the synchro scope to TP806. stereo filter (L=400Hz, R=2KHz). Activate the adjustment mode display of Fig.

  • Page 12: Purity And Convergence

    ELECTRICAL ADJUSTMENTS PURITY AND CONVERGENCE 3-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator. minutes before performing the following adjustments.

  • Page 13: Major Components Location Guide

    MAJOR COMPONENTS LOCATION GUIDE VR502 T501 TP002 TP001 FB401 J702 FOCUS VOLUME SCREEN VOLUME MAIN PCB TP806 TP804 J801 CRT PCB...

  • Page 14: Tv Block Diagram

    TV BLOCK DIAGRAM SPEAKER SPEAKER SP351 SP352 TU001 MICON IC101 OEC7054A HEAD PHONE JACK SOUND AMP IC353 AN5276 YUV IN IF/CHROMA/AUDIO IC201 TB1253N B BE 24 25 43 44 IC301 NJM2150AM 18 19 V OUT IC902 AN5829S TONE CONTROL IC303 10 SCL M62420SP COMB FILTER...
  • Page 15 PRINTED CIRCUIT BOARDS MAIN (INSERTED PARTS) SOLDER SIDE CP801A C430 W143 CP101 C413 C427 Q404 J702 R441 J701 J704 J705 J703 CD701A C715 C428 W110 C747 L703 CP851A W033 HS401 C418 C739 C745 W845 W032 TP003 C743 C738 C002 C744 L401 C740 C004...
  • Page 16 PRINTED CIRCUIT BOARDS MAIN (CHIP MOUNTED PARTS) SOLDER SIDE C120 Q705 Q704 R104 R322 R110 C336 R319 R510 R125 C334 C928 C967 R324 R108 R119 R121 C926 C330 C333 C966 R504 C130 R303 R327 R525 C306 R905 Q101 R904 IC902 R301 Q102 R140...
  • Page 17 PRINTED CIRCUIT BOARDS CRT/VM COIL (INSERTED PARTS) COMO FILTER (INSERTED PARTS) SOLDER SIDE SOLDER SIDE S851 R881 S852 CP852_1 C970 R868 B853 Q856 D853 R876 C859 D854 R866 CP803 L909 Q857 W805 L907 W809 L904 W802 R877 W002 R872 W003 R930 W004 D855...
  • Page 18 PRINTED CIRCUIT BOARDS CRT (CHIP MOUNTED PARTS) COMO FILTER (CHIP MOUNTED PARTS) SOLDER SIDE SOLDER SIDE R957 C904 Q913 C907 C936 C916 R809 R918 C914 C912 C910 IC901 R921 R812 R901 C911 R970 C944 C942 R853 C867 C940 R917 R859 Q903 R936 R903...
  • Page 19 MICON / TUNER SCHEMATIC DIAGRAM (MAIN PCB) OS101 TU001 NJH3022U268 ACCESORY PIC-28143SY-2 BT001 R03(AB)E_20_T C007 TM101 BT002 SBKMOP006A 0.1 B R03(AB)E_20_T TP001 FROM/TO CHROMA/IF H-BUFFER Q102 R.OUT C003 2SC2412K RED LED V-BUFFER R001 POWER ON Q101 D109 2SC2412K 27K 1W R139 MICON OSD_R...
  • Page 20 CHROMA / IF SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO AV C.OUT S802Y Y.OUT FROM/TO MICON/TUNER W842 R214 C613 SYNC_OUT TUNER_VIDEO W840 AUDIO BUFFER C213 Q201 OSD_B 2SC2412K FROM/TO AV OSD_G R608 C615 270 1/4W OSD_R CD701B C212 CH244002 OSD_BLK 0.1 B R.OUT R205 TV BUFFER...
  • Page 21 DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) V.OUTPUT IC401 LA78041 THERMAL PROTECTION PUMP UP 25.0 12.0 25.0 R407 5.6K 1/4W C411 R414 500V FROM/TO DY 27K +-1% R417 CP401 V801 BUFFER B06B-DVS-L A60LST196X11(O) Q401 BUFFER 2SA1015Y Q403 R401 2SA1015Y L402 L401 ELC16B501EN R423 C422 ELH5L4132N...

  • Page 22: Power Schematic Diagram

    POWER SCHEMATIC DIAGRAM CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE 6.3A 125V(F501). (MAIN PCB) 6.3A 125V ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE N’UTILISER QUE DES FUSIBLE DE MEME TYPE 6.3A 125V(F501). D516 RELAY DRIVE Q504...
  • Page 23 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO AV R314 AUDIO_R 8.2K R324 C334 AUDIO_L 1.8K 0.033 B C332 R326 C331 0.47 B 100 1/4W 0.022 R328 1.8K TONE 136K R301 C306 R303 C308 AMP1 I2C BUS INTERFACE 0.0033 0.033 SIMAMP1 VOLAMP1 6.5K 6.5K 6.5K...
  • Page 24 AV SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO CHROMA/IF CD701A CH244002 YUV_IN(REAR) J704 JPJ4311-011852 A/V_OUT(REAR) J705 JPJ4312-01-432 C713 R751 C714 R752 C715 R755 LINE1(REAR) J701 JPJ4312-01-432 FROM/TO POWER L703 P.CON+9V 47uH GND_SIGNAL C705 BUFFER LINE2(REAR) Q709 J703 KANP 2SA1037AK JPJ4312-01-432 AV SW IC701 MM1311AD FROM/TO CHROMA/IF...
  • Page 25 COMB FILTER SCHEMATIC DIAGRAM (COMB FILTER PCB) FROM/TO AV CP901 6035B-06Z002-T L912 R929 C946 15uH 50V KA L910 R964 C968 R923 L904 15uH BUFFER W809 W805 BUFFER BUFFER VIDEO Q906 Q903 22uH Q904 2SC2412K 2SA1037AK 2SA1037AK Q907 2SC2412K Q909 CP902 2SA1037AK 6035B-03Z002-T R940...
  • Page 26 CRT / SVM SCHEMATIC DIAGRAM (CRT PCB) PCB110 TCX341 TP804 R828 2.7K 1/4W RED AMP Q801 123.5 R813 2SC2621 D801 1SS133 RED AMP Q810 R801 2SC1740SP VM+12V 100 1/4W IC851 FROM DEFLECTION R810 KIA78L12BP-AT CP802 52147-0710 1.8K R816 P.CON+9V 47 1/4W G.OUT R.OUT TP805...
  • Page 27 WAVEFORMS MICON/TUNER 1 1V 0.1 s/div 1V 20 s/div 11 0.5V 20 s/div 2 1V 1 s/div 7 1V 20 s/div 12 1V 2 s/div 0.5V 10ms/div 3 1V 50 s/div 13 1V 20 s/div 4 1V 0.1ms/div 9 1V 50 s/div 14 2V 20 s/div CHROMA/IF 10 2V 20 s/div...
  • Page 28 WAVEFORMS DEFLECTION 16 2V 5ms/div 21 200V 50 s/div 26 5V 2ms/div SOUND 27 5V 2ms/div 22 2V 5ms/div 17 20V 5ms/div 18 10V 10ms/div 23 2V 5ms/div 28 200mV 20 s/div 19 20V 20 s/div 24 2V 5ms/div 29 200mV 20 s/div 20 2V 20 s/div 25 2V 5ms/div 30 2V 20 s/div...

  • Page 29: Comb Filter

    WAVEFORMS 31 1V 50 s/div 36 1V 5ms/div 37 50V 20 s/div 32 2V 5ms/div 38 50V 20 s/div 33 2V 5ms/div COMB FILTER 34 0.5V 20 s/div 39 50V 20 s/div 35 1V 20 s/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 30: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) PCB060 (VM COIL PCB) L503 FB401 V801 PCB010 (MAIN PCB) TU001 SP352 PCB330 (COMB PCB) SP351...

  • Page 31: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AD300425 A3J501Q720 CABINET,FRONT ASSY AD300002 763WAA0181 HEAT SINK AD300003 763WAA0200 HEAT SINK AD300004 763WAA0214 HEAT SINK AD300005 763WAA0215 HEAT SINK AD300006 763WAA0216 HEAT SINK AD300007 7230006755 SHEET,CAUTION AD300426 701WPJ1002 CABINET,FRONT AD300009 713WPA0134 GUIDE,REMOCON...

  • Page 32: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location NO. TSB P/N Reference NO. Description RESISTORS ! R001 BZ210008 R3X181273J R,METAL OXIDE 27K OHM 1W ! R410 AD300420 R5X2CE332J R,CEMENT 3.3K OHM 7W ! R411 AD300032 R6558AR39J R,FUSE 0.39 OHM 2W ! R416 AD300416 R002T25R6J 5.6 OHM 1/2W ! R418 AD300419 R4X5T6223F...
  • Page 33 ELECTRICAL REPLACEMENT PARTS LIST Location NO. TSB P/N Reference NO. Description D I O D E S D107 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D108 BZ410021 D97U05R61B DIODE,ZENER MTZJ5.6B T-77 D109 BZ410054 0021721150 SLR-342VCT32 D201 AD300070 D97U01201B DIODE,ZENER MTZJ12B T-77 ! D401 AD300069 D97U02701B DIODE,ZENER MTZJ27B T-77...
  • Page 34 ELECTRICAL REPLACEMENT PARTS LIST Location NO. TSB P/N Reference NO. Description TRANSISTORS Q107 BZ510022 TNYJJ05001 COMPOUND TRANSISTOR DTC114TKAT146 Q109 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q201 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q202 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q203 BZ510001 T6YJ1037K0 TRANSISTOR,SILICON 2SA1037AKT146R,S Q204 AD300030 T83A028140...
  • Page 35 ELECTRICAL REPLACEMENT PARTS LIST Location NO. TSB P/N Reference NO. Description COILS &TRANSFORMERS L903 BZ310043 021LA6150K COIL L904 BZ310058 021LA6220K COIL L905 BZ310043 021LA6150K COIL L907 AD300122 021LA6270K COIL L908 BZ310067 021LA6180K COIL L909 BZ310043 021LA6150K COIL L910 BZ310043 021LA6150K COIL L912 BZ310043 021LA6150K...
  • Page 36 ELECTRICAL REPLACEMENT PARTS LIST Location NO. TSB P/N Reference NO. Description MISCELLANEOUS ! F501 BZ614125 081PC6R304 FUSE 51MS063LCC ! FB401 AD300403 043224002R TRANSFORMER,FLYBACK 3224002R FH501 BZ614005 06710T0006 HOLDER,FUSE EYF-52BC FH502 BZ614005 06710T0006 HOLDER,FUSE EYF-52BC OS101 BZ614171 077Q014003 REMOTE RECEIVER PIC-28143SY-2 ! RY501 AD300114 0560V20115 RELAY...
  • Page 37 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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