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Toshiba 14af42 Service Manual

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FILE NO. 050-200202

SERVICE MANUAL

COLOR TELEVISION
14AF42
DOCUMENT CREATED IN JAPAN, Mar., 2002

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  Summary of Contents for Toshiba 14af42

  • Page 1: Service Manual

    FILE NO. 050-200202 SERVICE MANUAL COLOR TELEVISION 14AF42 DOCUMENT CREATED IN JAPAN, Mar., 2002...
  • 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 CRT Size / Visual Size 14 inch / 357mmV System CRT Type Flat Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2 Speaker Position Front Side Size 1.6 x 2.8 Inch Impedance Sound Output 2.5+2.5 W 10%(Typical) 2.0+2.0 W NTSC3.58+4.43 /PAL60Hz...
  • Page 4 Wake Up Timer Timer Back-up (at Power Off Mode) more than G-10 Remote Unit RC-DU Control Glow in Dark Remocon Format Toshiba Custom Code TV:40-BFh Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys Keys Keys...
  • Page 5 GENERAL SPECIFICATIONS G-11 Features Auto Degauss Auto Shut Off Canal+ CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type Type Auto Search CH Allocation Just Clock Function CH Label VM Circuit Full OSD Premiere Comb Filter Lines Auto CH Memory Hotel Lock Closed Caption Stable Sound...
  • Page 6 GENERAL SPECIFICATIONS G-13 Interface Switch Front Power System Select Main Power SW Sub Power Channel Up Channel Down Volume Up Volume Down Rear AC/DC TV/CATV Selector Degauss Main Power SW Indicator Power Yes(RED) Stand-by On Timer Terminals Front Video Input = VIDEO3 Audio Input = VIDEO3 RCA x 2 Other Terminal...
  • 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 DISASSEMBLY INSTRUCTIONS REMOVAL AND INSTALLATION OF When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using FLAT PACKAGE IC a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 2-3.) REMOVAL NOTE Put the Masking Tape (cotton tape) around the Flat...
  • Page 9 DISASSEMBLY INSTRUCTIONS INSTALLATION When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin- Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 2-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.
  • Page 10: 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 VOL.
  • Page 11: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. 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 115 ±...
  • Page 12 ELECTRICAL ADJUSTMENTS 2-7: VERTICAL POSITION 2-11: TINT/COLOR CENT Receive the monoscope pattern. Receive the color bar pattern. (RF Input) Using the remote control, set the brightness and Connect the oscilloscope to TP806. Using the remote control, set the brightness, contrast, contrast to normal position.
  • Page 13 ELECTRICAL ADJUSTMENTS 2-12: OSD HORIZONTAL 2-14: CONTRAST MAX MANUAL Activate the adjustment mode display of Fig. 1-1. Receive the color bar pattern. (RF Input) Press the VOL. UP/DOWN button on the remote Using the remote control, set the brightness and contrast to normal position.
  • Page 14: Purity And Convergence

    ELECTRICAL ADJUSTMENTS 3-3: STATIC CONVERGENCE 3. PURITY AND 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.
  • Page 15 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB R806 R808 TP805 CP804 TP806 J802 CP803 CP805_1 CD803 CD801 CP801A CP101 CD701A FB401 CP401 T501 CD701B SPEAKER L503 CP502 VR502 R527 TP002 AC IN CP501 CP1001 MAIN PCB...
  • Page 16 BLOCK DIAGRAM TU001 IC198 MICON S-24C16AFJA-TB-01 IC101 OEC7074A SPEAKER SPEAKER SP1001 SP1002 MEMORY IC HEAD PHONE JACK YUV IN J1001 CHROMA/IF IC IC201 TB1253N SOUND AMP 24 25 43 44 IC1001 AN5276 18 19 V OUT SOUND DECORDER IC902 AN5829S 21 22 TONE CONTROL IC303...
  • Page 18 PRINTED CIRCUIT BOARDS MAIN (CHIP MOUNTED PARTS) SOLDER SIDE Q705 R737 IC198 R104 R731 Q704 R510 Q1503 R1507 R1506 C336 C554 R155 R319 R1504 C334 R532 C928 Q509 R111 R324 C1514 C926 C330 C333 R146 R327 IC1501 R905 R140 IC101 R904 IC902 R122...
  • Page 20 MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) OS101 RPM7138-H5 ACCESORY TU001 TECC1040PG32E TEST POINT CP101 BT001 173979-7 R03(AB)E_20_T R003 I2C_SCL TM101 BT002 SBKMOP006B 330K I2C_SDA R111 R03(AB)E_20_T I2C_OFF H-BUFFER Q102 2SC2412K C003 RED LED V-BUFFER Q101 POWER ON 2SC2412K D109 SLR-342VCT32 MICON IC IC101 OEC7074A FROM/TO CHROMA/IF...
  • Page 21 CHROMA/IF SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO AV C_V_OUT_SW Y_V_OUT_SW FROM/TO MICON/TUNER TUNER_VIDEO R214 SYNC_OUT TUNER_AUDIO_L AUDIO TUNER_AUDIO_R BUFFER C213 Q201 2SC2412K OSD_B C615 OSD_G R608 OSD_R C212 1/4W W820 FROM AV R205 TV BUFFER 0.01 B OSD_BLK Q202 TV BUFFER CD701B 2SC2412K PROTECT...
  • Page 22 DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) V.OUTPUT IC IC401 AN5522 THERMAL PROTECTION PUMP UP 25.0 12.0 25.0 R407 5.6K C411 R414 500V FROM/TO DY 27K +-1% R417 33K V801 CP401 A36AKJ13X05 B06B-DVS W860 C418 FROM POWER 250V 0.27 P.CON+5V H_CTL Q407 HS402 P.CON+9V 2SC2412K...
  • Page 23 POWER SCHEMATIC DIAGRAM (MAIN PCB) 6.3A 125V CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE 6.3A 125V(F501) ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE N’UTILISER QUE DES FUSIBLE DE MEME TYPE 6.3A 125V(F501) TO DIGITAL COMB/FILTER D516 RELAY DRIVE...
  • Page 24 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM AV R314 SW_AUDIO_R 1.5K R324 C334 SW_AUDIO_L 1.8K 0.033 B R326 C331 C332 100 1/4W 0.022 0.47 R328 1.8K TONE 136K AMP1 I2C BUS INTERFACE SIMAMP1 VOLAMP1 6.5K 6.5K 6.5K VOLAMP2 CONTROL SIMAMP2 6.5K LOGIC TONE 136K...
  • Page 25 AV SCHEMATIC DIAGRAM (MAIN PCB) TO CHROMA/IF CD701A CH243001 YUV_IN(REAR) J704 MSP-213V1-652_PBSN A/V_OUT(REAR) J708 MSP-213V2-432_PBSN LINE2(REAR) J703 FROM POWER MSP-213V2-432_PBSN L703 P.CON+9V 47uH 0305 C713 R751 C714 R752 FROM/TO DIGITAL COMB C715 SW_VIDEO_OUT R713 LINE1(REAR) J701 C705 Y_V_OUT_COMB BUFFER MSP-213V2-432_PBSN Q709 KANP C_V_OUT_COMB...
  • Page 26 DIGITAL COMB/FILTER SCHEMATIC DIAGRAM (MAIN PCB) L1505 L1511 15uH 15uH C1523 0305 0305 120P CH 8.78 3.80 BUFFER BUFFER 8.15 4.92 Q1506 Q1503 W852 C1513 BUFFER 2SA1037AK 2SC2412K Q1505 2.77 2SC2412K 0.1 B 2.14 R1521 C1535 C1519 R1515 1K 1/4W NTSC 3LINE COMB FILTER IC IC1501 LA76600M-TLM...
  • Page 27 CRT SCHEMATIC DIAGRAM (CRT PCB) TP804 FROM DEFLECTION R828 2.7K 1/4W CP805_1 (CP801A) A2001WV2-10P RED/GREEN AMP Q801 123.5 P.CON+9V R813 2SC2621 G.OUT 220 1/4W R.OUT B.OUT D801 HEATER 1SS133 RED/GREEN AMP Q810 R801 KTC3199_Y 100 1/4W R810 180V C813 1.8K 1/4W 0.0022 M D807 D808...
  • Page 28 WAVEFORMS MICON/TUNER 1 1V 0.1µs/div 1V 20µs/div 11 0.5V 20µs/div 2 1V 1µs/div 7 1V 20µs/div 12 1V 2µs/div 0.5V 10ms/div 3 1V 50µs/div 13 1V 20µs/div 4 1V 0.1ms/div 9 1V 50µs/div 14 2V 20µs/div CHROMA/IF 10 2V 20µs/div 5 1V 50µs/div 15 2V 20µs/div NOTE:...
  • Page 29 WAVEFORMS DEFLECTION 16 2V 5ms/div 21 200V 50µs/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 20µs/div 19 20V 20µs/div 24 2V 5ms/div 29 200mV 20µs/div 20 2V 20µs/div 25 2V 5ms/div 30 2V 20µs/div NOTE:...
  • Page 30 WAVEFORMS 31 1V 50µs/div 38 50V 20µs/div 39 50V 20µs/div 32 2V 5ms/div 33 2V 5ms/div 34 0.5V 20µs/div 37 50V 20µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 31: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) FB401 L503 V801 TU001 PCB010 (MAIN PCB) SP1002 SP1001...
  • Page 32: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AD301153 A3L003J720 CABINET,FRONT ASSY AD301154 726000A031 SHEET,CRT NO. BZ710009 741WUA0019 SPRING,EARTH AD301155 723000B872 FILM,DECORATION AD301156 A3L003J740 CABINET,BACK ASSY AD300007 7230006755 SHEET,CAUTION (FOR USA) AD300132 7230006818 SHEET,CAUTION (FOR CANADA) AD300626 701WPJB281 CABINET,FRONT AD300627...
  • Page 33: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS ! R001 AD301208 R002T2473J 47K OHM 1/2W R402 AD301139 R6558A561J R,FUSE 560 OHM 2W ! R410 AD301140 R3X28A221J R,METAL OXIDE 220 OHM 2W ! R426 AD301014 R4X5T6472F R,METAL 4.7K OHM 1/6W ! R436 BZ210105...
  • Page 34 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES ! D505 AD300076 D28F30DF60 DIODE,RECTIFIER 30DF6-FC ! D506 AD300731 D2WXN49370 DIODE,SILICON 1N4937 D507 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D509 AD300671 D97U01801B DIODE,ZENER MTZJ18B T-77 ! D510 AD300076 D28F30DF60 DIODE,RECTIFIER 30DF6-FC D511 AD300731...
  • Page 35 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description TRANSISTORS Q603 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q604 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q701 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q704 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q705 BZ510002 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT146 R,S Q709 BZ510001...
  • Page 36 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description MISCELLANEOUS CD801 AD301150 06CU2A2601 CORD,CONNECTOR CU2A2601 CD803 BZ614122 06CP82035A CORD,CONNECTOR CP82035A CF201 BZ613015 1011T4R504 FILTER,CERAMIC EFCT4R5YS5A CF202 AD301044 1022045R74 FILTER,SAW SAFGP45M7VFGZ00B CF203 AD300686 1012T4R519 FILTER,CERAMIC TRAP TPSRA4M50C00-A0 CF204 AD300513 1012T04702 FILTER,CERAMIC TRAP MKT47.3MC110P-TF...
  • Page 37 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...