Toshiba 53N21F2 Service Manual
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Toshiba 53N21F2 Service Manual

Toshiba 53N21F2 Service Manual

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TOSHIBA
SERVICE MANUAL

COLOUR TELEVISION

53N21F2
PRINTED IN UK. 2002 C

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Summary of Contents for Toshiba 53N21F2

  • Page 1: Colour Television

    TOSHIBA SERVICE MANUAL COLOUR TELEVISION 53N21F2 PRINTED IN UK. 2002 C...

  • 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: Table Of Contents

    CONTENTS SERVICING NOTICES ON CHECKING ...................... A1-1 HOW TO ORDER PARTS ........................... A1-1 IMPORTANT ..............................A1-1 CONTENTS ..............................A2-1 GENERAL SPECIFICATIONS ........................A3-1~A3-5 DISASSEMBLY INSTRUCTIONS 1.REMOVAL OF ANODE CAP ......................B1-1 2.REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ............... B2-1, B2-2 SERVICE MODE LIST ..........................

  • Page 4: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 21 inch / 544.5mmV System CRT Type NORMAL Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System PAL/SECAM Speaker 1 Speaker Position Front Size 1.5 x2.7 Inch Impedance Sound Output 5.0 W 10%(Typical) 4.0 W DDR SECAM NTSC3.58(AV)+NTSC4.43 PAL60Hz...
  • Page 5 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Character Picture Contrast Brightness Colour Tint (NTSC Only) Sharpness Audio Bass Treble Balance BBE On/Off Stable Sound On/Off CH Tuning Manual CH MAPPING CH Allocation Text Langage(East/West) Language Clock Set On/OffTimer Set On Timer Set Pin Code Registration Panel Lock...
  • Page 6 GENERAL SPECIFICATIONS G-10 Remote Unit RC-GX Control Glow in Dark Remocon Format Custom Code 40-BF h Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys 34 Keys Keys Power 1/Rename 2/Move Volume Up / + Volume Down / - Previous Select Picture Menu...
  • Page 7 GENERAL SPECIFICATIONS G-11 Features Auto Degauss Auto Shut Off Canal+ CATV Anti-theft(Back Up 30 Min.) Memory(Last CH) Memory(Last Volume) Auto Search CH Allocation CH MAPPING Just Clock Function Game Position CH Label VM Circuit Full OSD Noise Blue Back T'Text Text type Fastext Text Language...
  • Page 8 GENERAL SPECIFICATIONS G-13 Interface Switch Front Power (Tact Sw) 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 Stand-by Stand-by/ON Yes(Red) On Timer Yes(Green) Terminals Front Video Input...

  • Page 9: 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 10: Removal And Installation Of Flat Package Ic

    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 11 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 12: 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 13: Electrical Adjustments

    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 5 minutes. CAUTION Connect the digital voltmeter to TP501. Set condition is AV MODE without signal.
  • Page 14 ELECTRICAL ADJUSTMENTS 2-7: WHITE BALANCE 2-10: VERTICAL POSITION/VERTICAL LINEARITY NOTE: Adjust after performing CUT OFF adjustment. Receive the monoscope pattern from the Pattern Generator. Place the set with Aging Test for more than 10 minutes. Using the remote control, set the brightness and Receive the gray scale pattern from the Pattern contrast to normal position.
  • Page 15 ELECTRICAL ADJUSTMENTS 2-13: TINT 2-15: Confirmation of Fixed Value (Step No.) Receive the NTSC color bar pattern. (Audio Video Input) Please check if the fixed values of the each adjustment items are set correctly referring below. Using the remote control, set the brightness and contrast to normal position.

  • Page 16: 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 17 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB TP024 CP806 TP022 J801 CP802B CP803B VR420 J701 VR401 FB401 CP401 CD802 TP501 TP001 R521 CP802A AC IN DEGAUSS COIL SPEAKER CD501 CP502 CP1002 CP501 J702 OS101 J703 J704 MAIN PCB...

  • Page 18: Block Diagram

    BLOCK DIAGRAM CH UP MICON W/T.TEXT IC TU001 IC101 OECF013B CH DOWN Q102 SCL SDA BPL AGC VOL UP LED DRIVE ON_TIMER Q103 KEY_IN VOL DOWN LED DRIVE STANDBY LED ON TIMER P.CON+5V STAND BY/P.ON D103 MEMORY IC SDA 19 CHROMA IC D101 AVDD1...

  • Page 19: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE CP101 VR420 W112 R430 L706 R407 W833 R428 L708 L704 J701_1 L711 W804 W115 W016 D410 R713 D712 R715 D405 R714 R716 W012 W027 C412 W033 D527 R703 R412 W071 W013 C403 IC502 W124 W114...
  • Page 20 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE R132 Q703 R137 Q103 Q102 R738 R126 C736 R102 R103 R104 R101 R107 R603 C140 C109 C108 R605 R816 Q601 C102 C112 W853 R811 C111_1 C101 C104 C132 R148 IC102 R512 C139_1 C509 IC199...
  • Page 21 MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) TU001 TUWRF4EG-778F2A OS101 LED DRIVE ON TIMER RPM7138-H5 Q102 D103 2SA1037AK R137 R104 R103 R102 R101 LED DRIVE LTL-1CHGE-002A 2.2K 1.2K STAND BY/P.ON Q103 GREEN D101 2SA1037AK CP001 R132 003P-2100 C122 ACCESSORY SLR-342VCT32 UM-4 BT001 R03(AB)2PXGPI UM-4 BT002...
  • Page 22 IF/CHROMA SCHEMATIC DIAGRAM (MAIN PCB) TO SOUND AMP W823 MONO_A_IN SIF BUFFER Q204 2SC2412K R206 VIF PRE.AMP L206 C204 Q201 L204 SECAM VL SW 0.22uH 0.022 B KTC3881S-RTK Q303 CF202_1 10uH R217 2SC2412K J1981M R304 FROM/TO 21PIN/AV SW CF201 1K 1/4W C621 TPWA02B MONO_A_OUT1...
  • Page 23 21PIN/AV SW SCHEMATIC DIAGRAM (MAIN PCB) L713 15uH C742 L717 FROM SOUND AMP 10uH FRONT_A_IN_L FRONT_V_IN3 C741 W824 W836 FROM/TO MICON/TUNER FORTHD_VCR_1 FROM/TO IF/CHROMA SCART_V_IN2/Y BUFFER EXT_A_IN Q702 SCART_V_IN1 2SC2412K R703 MONO_A_OUT1 1/4W 21_B 21_G L711 21_R 22uH VIDEO IN VIDEO IN 21_Y R719...
  • Page 24 SOUND AMP SCHEMATIC DIAGRAM (MAIN PCB) TO 21PIN/AUDIO SW FRONT_A_IN_L FRONT_V_IN3 SOUND AMP IC IC1002 AN5276 ATT.CONT. ATT. FRONT VIDEO RIPPLE J703 FILTER HTJ-032-03AY STAND MUTE 20.5 10.3 21.7 10.3 R707 100 1/2W FRONT AUDIO L J704 HTJ-032-03AW C1003 R1004 C736 BUFFER R738...
  • Page 25 DEFLECTION/CRT SCHEMATIC DIAGRAM (CRT PCB) (MAIN PCB) CP802A CP802B B2013H02-6P B2013H02-6P FROM/TO IF/CHROMA R602 CUT OFF CUT OFF 560 1/4W B.OUT B.OUT B.OUT R.OUT R.OUT R.OUT G.OUT G.OUT G.OUT PROTECT PROTECT V-DRIVE IC IC401 TDA8174A VAMP PROTECT CP803A V_OUT CP803B Q403 B2013H02-4P B2013H02-4P...
  • Page 26 POWER SCHEMATIC DIAGRAM (MAIN PCB) 3A 125V R543 ICP502 D526 FE201-6L49 0.39 3W 20P_3000 R521 D520 30DF6-FC 0.82 3W D506 R524 C517_1 1SS133 47K 1/4W 11.5 680P RELAY SW C503_1 Q505 KTC3203_Y 100V EMERGENCY Q509 TO DEFLECTION/CRT 2SA1624 H.DRV+B P.CON+8V RY501 ALKS321 P.CON SW...

  • Page 27: Micon/Tuner

    WAVEFORMS MICON/TUNER IF/CHROMA 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 NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 28: Deflection/Crt

    WAVEFORMS 20µs 20µs 20µs 100mV 20µs 20µs 200mV 20µs 10ms 100mV 200mV DEFLECTION/CRT 20µs 20µs 10ms 200mV 21PIN/AV SW 10ms 20µs 20µs NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 29: Sound Amp

    WAVEFORMS 10ms 20µs 20µs 20µs SOUND AMP 20µs 0.5V 0.2ms 2µs 200V 20µs 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 PCB110 (CRT PCB ASS'Y) PCB010 (MAIN PCB ASS'Y) 101C 101D 101E 101B 101A...

  • Page 31: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location Part Number Description AE001907 A3M515Y720 CABINET,FRONT ASSY 101A AE001908 701WPJC410 CABINET,FRONT 101B AE000504 711WPA0171 PLATE,FRONT 101C AD301499 713WPA0214 GUIDE,REMOCON 101D AE000505 735WPA0667 BUTTON,BASE 101E AE001909 735WPBA862 BUTTON,FRAME AE001910 A3M515Y740 CABINET,BACK ASSY AE000796 752WSAA006 PLATE,SHIELD AE000797 752WSAA008 SHIELD,CASE AE000798...

  • Page 32: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description RESISTORS R003 AE000356 R002T4271J 270 OHM 1/4W R004 AE000356 R002T4271J 270 OHM 1/4W R005 AE001013 R903N8823J 82K OHM 1/8W R006 AE000970 R903N8153J 15K OHM 1/8W R101 AE000977 R903N8391J 390 OHM 1/8W R102 AE000987 R903N8821J 820 OHM 1/8W...
  • Page 33 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description RESISTORS R416 BZ210053 R002T22R2J 2.2 OHM 1/2W R417 AE000490 R4X5T6392F R,METAL 3.9K OHM 1/6W R418 AE000486 R002T4470J OHM 1/4W R419 AE000977 R903N8391J 390 OHM 1/8W R420 AE001010 R903N8183J 18K OHM 1/8W R421 AE000484 R002T2823J 82K OHM 1/2W...
  • Page 34 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description RESISTORS R707 AE000347 R002T2101J 100 OHM 1/2W R710 AE002623 R903N8822J 8.2K OHM 1/8W R713 BZ210107 R002T4750J OHM 1/4W R714 AE000361 R002T4680J OHM 1/4W R715 BZ210107 R002T4750J OHM 1/4W R716 BZ210107 R002T4750J OHM 1/4W R719 BZ210107 R002T4750J...
  • Page 35 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description CAPACITORS C204 AE000316 CS0RB04H4K 0.022 UF 50V B C205 AE000229 CS0RB0413K 0.001 UF 50V B C206 BZ110278 CS0RB0216K UF 16V B C207 AE001003 CS0RF04L5Z 0.33 UF 50V F C209 BZ110096 E50HU2100M UF 16V C210 BZ110278 CS0RB0216K...
  • Page 36 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description CAPACITORS C616 AE000317 CS0RB04Q3K 0.0047UF 50V B C618 BZ110255 CQGTB0415K 0.1 UF 50V B C619 AE000311 CS0RB0315K 0.1 UF 25V B C620 BZ110255 CQGTB0415K 0.1 UF 50V B C621 BZ110096 E50HU2100M UF 16V C622 BZ110255 CQGTB0415K...
  • Page 37 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description DIODES ! D526 AD301980 D2CF2016L0 DIODE,SILICON FE201-6L49 D527 BZ410043 D2WT011E10 DIODE,SILICON 11E1-EIC D528 BZ410100 D97U01801B DIODE,ZENER MTZJ18B T-77 D530 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D531 BZ410094 D97U01501B DIODE,ZENER MTZJ15B T-77 D532 BZ410092 D2WXN49370 DIODE,SILICON 1N4937 D533...
  • Page 38 ELECTRICAL REPLACEMENT PARTS LIST Location Part Number Description COILS &TRANSFORMERS L704 BZ310183 021LA6220J COIL L706 BZ310183 021LA6220J COIL L707 BZ310183 021LA6220J COIL L708 BZ310183 021LA6220J COIL L711 BZ310183 021LA6220J COIL L713 BZ310043 021LA6150K COIL L715 AD301445 021LA6100J COIL L717 AD301445 021LA6100J COIL L801...
  • Page 39 ELECTRICAL REPLACEMENT PARTS LIST 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 J2-8...
  • Page 40 TOSHIBA Information Systems (UK) Ltd Consumer Products Division, European Service Centre, Admiralty Way, Camberley, Surrey. GU15 3DT...

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