Toshiba 14N21D2 Service Manual
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Toshiba 14N21D2 Service Manual

Toshiba 14N21D2 Service Manual

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TOSHIBA
SERVICE MANUAL
COLOUR TELEVISION
14N21D2
PRINTED IN UK. 2002 C

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Summary of Contents for Toshiba 14N21D2

  • Page 1 TOSHIBA SERVICE MANUAL COLOUR TELEVISION 14N21D2 PRINTED IN UK. 2002 C...

  • Page 2: 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 2 seconds. Remocon Key Operations Set Key Reset the user setting items (PICTURE, VOLUME and LANGUAGE) to the initial state VOL.

  • Page 3: Adjustment Procedure

    ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE 2. BASIC ADJUSTMENTS Read and perform these adjustments when repairing the 2-1: CONSTANT VOLTAGE circuits or replacing electrical parts or PCB assemblies. Place the set with Aging Test for more than 15 minutes. Connect the digital voltmeter to TP502. CAUTION Set condition is AV MODE without signal.
  • Page 4 ELECTRICAL ADJUSTMENTS 2-10: BRIGHT CENT 2-6: FOCUS Receive a 70dB monoscope pattern. Receive the PAL black pattern*. (RF Input) Turn the Focus Volume fully counterclockwise once. Using the remote control, set the brightness and Adjust the Focus Volume until picture is distinct. contrast to normal position.
  • Page 5 ELECTRICAL ADJUSTMENTS 2-13: TINT Receive the NTSC color bar pattern. (Audio Video Input) Using the remote control, set the brightness and contrast to normal position. Connect the oscilloscope to TP024. Activate the adjustment mode display of Fig. 1-1 and press the channel button (20) on the remote control to select "TINT".

  • Page 6: Purity And Convergence Adjustments

    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 7: Electrical Adjustment Parts Location Guide (Wiring Connection)

    ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CD803 J701 CP101 CP803A VR420 FB401 VR401 R527 CP401 TP502 VR501 CRT PCB CP802A TP023 TP024 J801 CD803B CP806 CP801 CP1001 MAIN PCB CD801 GND CRT SPEAKER AC IN...
  • Page 8 BLOCK DIAGRAM J1001 HEADPHONE_JACK TU001 CHROMA IC IC201 STV2246E IC1001 AN7511 CH UP AUDIO_OUT RF_AGC_OUT Q201 SP1001 CH DOWN FM_OUT SOUND AMP CF202 SPEAKER VIF PRE. AMP CVBSIN1 SAW FILTER PIFIN2 VOL UP MICON W/T.TEXT IC IC101 OECF013A PIFIN1 INT_CVBS_OUT VOL DOWN AUDIO SW (MONO) IC OSD_R...
  • Page 9 MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) TU001 TUWRF4EG-778F2A GREEN LED DRIVE D101_1 OS101 ACCESSORY Q102 LTL-1BEFJ-002A RPM7138-H5 KRA102SRTK R104 R103 R102 R101 R137 TP003 2.2K 1.2K RED LED DRIVE CP001 ANT001 BT001 Q103 003P-2100 T4-216AP-BK R03(AB)2PXGPI 2SC2412K R132 C122 TM101 RC-GX010 BT002 R03(AB)2PXGPI R112...
  • Page 10 CHROMA/SIF/VIF/21PIN SCHEMATIC DIAGRAM (MAIN PCB) SIF BUFFER Q204 2SC2412K C629 R208 L206 C212 0.39uH 0.01 B L208 C204 VIF PRE.AMP SAW FILTER L204 BUFFER Q201 CF202_1 Q202 0.39uH 0.022 B KTC3881S-RTK G1984M 12uH 2SC2412K 2.28 R217 FROM POWER VCO COIL L207 P.CON+8V 3700005...
  • Page 11 SOUND AMP/FRONT AV SCHEMATIC DIAGRAM (MAIN PCB) FRONT AUDIO J703 AV1-09D-4 R711 L704 10uH L714 FRONT VIDEO J702 10uH 0305 AV1-09D-3 R740 CP1001 A2502WV2-2P SPEAKER R1011 BLACK FROM/TO CHROMA/SIF/VIF/21PIN C1002 47K 1/4W SW_AUDIO_IN SP1001 FRONT_VIDEO_IN SA08A05BWC SCART_AUDIO AUDIO_OUT B1001 HEADPHONE_JACK W4BRH3.5X6X1.0 J1001 MSJ-035-12A_PC...
  • Page 12 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) CP802B CP802A B2013H02-6P B2013H02-6P PROTECT PROTECT FROM/TO CHROMA/SIF/VIF/21PIN CUT OFF CUT OFF R.OUT R.OUT R.OUT G.OUT G.OUT G.OUT B.OUT B.OUT B.OUT VAMP V-DRIVE IC IC401 TDA8174A CP803A CP803B V_OUT B2013H02-4P B2013H02-4P ABCL H_OUT HEATER HEATER 180V 180V FROM/TO CRT...
  • Page 13 POWER SCHEMATIC DIAGRAM (MAIN PCB) R506 22K 1/4W EMERGENCY TO SOUND AMP/FRONT AV Q504 2SA1624 P.CON+8V 134.8 135.0 135.0 135.0 C531 D506 R521 1SS133 TO DEFLECTION/CRT R528 RELAY SW Q505 C517_1 10K 1/4W KTC3203_Y R527 0.001 P.CON+8V D510 RU2AM-EIC RY501 H.DRV+B ALKS321 T501...
  • Page 14 WAVEFORMS MICON/TUNER CHROMA/SIF/VIF/21PIN 50µs 20µs 0.5µs 100mV 0.5V 10ms 50µs 100mV 200mV 20µs 20µs 50µs 0.5V 0.2ms 20µs 20µs 50µs 0.2ms 20µs 100mV 100mV NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 15: Sound Amp/Front Av

    WAVEFORMS DEFLECTION/CRT 20µs 10ms 10ms 20µs 20µs 10ms 100mV 200mV SOUND AMP/FRONT AV 10ms 20µs 200mV 20µs 20µs 20µs 1.00V 500us 20µs 20µs 500mV NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 16 WAVEFORMS 2µs 200V 20µs 20µs 20µs NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 17: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location Part Number Description AE001367 A3M407I720 CABINET,FRONT ASSY 101A AE001368 701UPJA131 CABINET,FRONT 101B AE000389 713UPA0020 GUIDE,REMOCON 101C AE000390 713UPA0021 GLASS,LED 101D AE000391 735UPA0097 BUTTON,BASE 101E AE000865 735UPBA021 BUTTON,FRAME AE001369 A3M407I740 CABINET,BACK ASSY AE000796 752WSAA006 PLATE,SHIELD AE000797 752WSAA008 SHIELD,CASE AE000798...

  • Page 18: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description RESISTORS R001 AE000348 R002T2183J 18K OHM 1/2W R002 AE000348 R002T2183J 18K OHM 1/2W R003 AE000965 R903N8101J 100 OHM 1/8W R004 AE000965 R903N8101J 100 OHM 1/8W R005 AE000967 R903N8104J 100K OHM 1/8W R006 AE000970 R903N8153J 15K OHM 1/8W...
  • Page 19 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description RESISTORS R419 AD300658 R903N8122J 1.2K OHM 1/8W R420 BZ210182 R002T4103J 10K OHM 1/4W R421 BZ210118 R002T4473J 47K OHM 1/4W R422 AD301301 R002T4152J 1.5K OHM 1/4W ! R424 BZ210279 R3X181181J R,METAL OXIDE 180 OHM 1W R427 BZ210273 R002T4101J...
  • Page 20 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description RESISTORS R741 AD300780 R903N8102J OHM 1/8W R802 BZ210201 R002T4272J 2.7K OHM 1/4W ! R803 BZ210099 R3X181153J R,METAL OXIDE 15K OHM 1W R804 BZ210201 R002T4272J 2.7K OHM 1/4W ! R805 BZ210099 R3X181153J R,METAL OXIDE 15K OHM 1W R806 BZ210201...
  • Page 21 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description CAPACITORS C423 BZ110212 E5EZTD2R2M 2.2 UF 250V C435 AE000960 P232W1104J 0.1 UF 100V MMTS C437 BZ110136 P4J7F3394J CMPP 0.39 UF 250V PMS C440 AE000416 P232W1103J 0.01 UF 100V MMTS C443 BZ110137 P4N8FJ822H CMPP 0.0082UF 1.25KV C446...
  • Page 22 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description CAPACITORS C1005 AE000958 E50HU5R47M 0.47 UF 50V C1006 AE001356 E02L02221M 220 UF 16V AE001357 E02LT2221M 220 UF 16V C1007 BZ110096 E50HU2100M UF 16V C1009 AE000317 CS0RB04Q3K 0.0047UF 50V B DIODES D001 BZ410037 D97U03301B DIODE,ZENER MTZJ33B T-77...
  • Page 23 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description TRANSISTORS Q507 BZ510069 TCATC31980 TRANSISTOR,SILICON KTC3198-AT(Y,GR) Q508 BZ510068 TNAAJ05003 COMPOUND TRANSISTOR KRC111SRTK Q509 BZ510068 TNAAJ05003 COMPOUND TRANSISTOR KRC111SRTK Q510 BZ510067 TNAAC05002 COMPOUND TRANSISTOR KRC103SRTK Q511 BZ510057 TAAT01281Y TRANSISTOR,SILICON KTA1281_Y Q512 BZ510090 TPAAB05001 COMPOUND TRANSISTOR KRA102SRTK Q605...
  • Page 24 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description MISCELLANEOUS CP803B BZ614334 067U004029 WIRE HOLDER B2013H02-4P EL001 BZ614043 124116281A EYE LET XRY16X28BD EL002 BZ614044 124120301A EYE LET XRY20X30BD ! F501 BZ614486 080NT04004 FUSE 50T040H ! FB401 AD302167 043214039F TRANSFORMER,FLYBACK FNI-14B002 FH501 BZ614005 06710T0006 HOLDER,FUSE...

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