Toshiba 21N21E2 Service Manual
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Toshiba 21N21E2 Service Manual

Toshiba 21N21E2 Service Manual

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TOSHIBA
SERVICE MANUAL
COLOUR TELEVISION
21N21E2
PRINTED IN UK. 2003 C

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  • Page 1 All manuals and user guides at all-guides.com TOSHIBA SERVICE MANUAL COLOUR TELEVISION 21N21E2 PRINTED IN UK. 2003 C...

  • Page 2: Servicing Notices On Checking

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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...
  • Page 5 All manuals and user guides at all-guides.com 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 Auto CH MAPPING CH Allocation Text Langage(East/West) Language Clock Set...
  • Page 6 All manuals and user guides at all-guides.com 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 / +...
  • Page 7 All manuals and user guides at all-guides.com 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...
  • Page 8 All manuals and user guides at all-guides.com 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...

  • Page 9: Disassembly Instructions

    All manuals and user guides at all-guides.com DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP 3. After one side is removed, pull in the opposite direction to 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

    All manuals and user guides at all-guides.com 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.
  • Page 11 All manuals and user guides at all-guides.com 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.

  • Page 12: Service Mode List

    All manuals and user guides at all-guides.com 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. Set Key Remocon Key Operations...

  • Page 13: Electrical Adjustments

    All manuals and user guides at all-guides.com 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. Connect the digital voltmeter to TP501.
  • Page 14 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com ELECTRICAL ADJUSTMENTS PURITY AND CONVERGENCE 3-3: STATIC CONVERGENCE ADJUSTMENTS NOTE NOTE Adjust after performing adjustments in section 3-2. Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator.
  • Page 17 All manuals and user guides at all-guides.com 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 L302 CP802A AC IN DEGAUSS COIL SPEAKER CD501 VR501...

  • Page 18: Block Diagram

    All manuals and user guides at all-guides.com BLOCK DIAGRAM CH UP TU001 MICON W/T.TEXT IC CH DOWN IC101 OECF013B Q102 SCL SDA VOL UP LED DRIVE ON_TIMER Q103 VOL DOWN KEY_IN LED DRIVE STANDBY LED ON TIMER P.CON+5V D103 STAND BY/P.ON SDA 19 MEMORY IC CHROMA IC...

  • Page 19: Printed Circuit Boards Main/Crt

    All manuals and user guides at all-guides.com PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE CP101 VR420 W112 R430 L706 R407 W833 L708 R428 J701_1 L704 L707 L711 W804 W115 W016 D410 D712 R713 R716 R715 R714 W012 C412 W033 D405 W027 D527...
  • Page 20 All manuals and user guides at all-guides.com 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 R811 W853 C111_1 C101 C104...
  • Page 21 All manuals and user guides at all-guides.com MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) TU001 TUWRF4EG-778F2A OS101 LED DRIVE ON TIMER RPM7138-H5 Q102 D103 2SA1037AK R137 R104 R103 R102 R101 LTL-1CHGE-002A 2.2K 1.2K LED DRIVE STAND BY/P.ON GREEN Q103 D101 CP001 2SA1037AK R132 003P-2100 C122...
  • Page 22 All manuals and user guides at all-guides.com 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 0.22uH 0.022 B KTC3881S-RTK CF202_1 12uH R217 J1981M FROM/TO 21PIN/AV SW C621 MONO_A_OUT1 TUNER_V_OUT L202...
  • Page 23 All manuals and user guides at all-guides.com 21PIN/AV SW SCHEMATIC DIAGRAM (MAIN PCB) L713 15uH C742 L717 FROM SOUND AMP 10uH FRONT_A_IN_L FRONT_V_IN3 C741 W824 L711 22uH W836 FROM/TO MICON/TUNER FORTHD_VCR_1 FROM/TO IF/CHROMA L704 SCART_V_IN2/Y 22uH EXT_A_IN SCART_V_IN1 R703 MONO_A_OUT1 1/4W 21_B BUFFER...
  • Page 24 All manuals and user guides at all-guides.com SOUND AMP SCHEMATIC DIAGRAM (MAIN PCB) TO 21PIN/AV 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 FROM IF/CHROMA 20.5 10.3 21.7 10.3 MONO_A_IN R707 100 1/2W FRONT AUDIO L...
  • Page 25 All manuals and user guides at all-guides.com DEFLECTION/CRT SCHEMATIC DIAGRAM (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...

  • Page 26: Power

    All manuals and user guides at all-guides.com POWER SCHEMATIC DIAGRAM (MAIN PCB) 3A 125V R543 ICP502 D526 FE201-6L49 0.39 3W 20P_3000 R521 D506 R524 0.82 3W 1SS133 C503_1 47K 1/4W 11.5 D520 RELAY SW Q505 100V 30DF6-FC KTC3203_Y TO DEFLECTION/CRT EMERGENCY C517_1 Q509...
  • Page 27 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com WAVEFORMS 10ms 20µs 20µs 20µs SOUND AMP 20µs 0.5V 2µs 0.2ms 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

    All manuals and user guides at all-guides.com MECHANICAL EXPLODED VIEW PCB110 (CRT PCB ASS'Y) PCB010 (MAIN PCB ASS'Y) 101C 101D 101E 101B 101A...

  • Page 31: Mechanical Replacement Parts List

    All manuals and user guides at all-guides.com MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description AE002603 A3M511G720 CABINET,FRONT ASSY 101A AE001949 701WPJC370 CABINET,FRONT 101B AE000504 711WPA0171 PLATE,FRONT 101C AD301499 713WPA0214 GUIDE,REMOCON 101D AE000505 735WPA0667 BUTTON,BASE 101E AE000890 735WPBA659 BUTTON,FRAME AE002604...

  • Page 32: Electrical Replacement Parts List

    All manuals and user guides at all-guides.com ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description RESISTORS R003 AE000356 R002T4271J 270 OHM 1/4W R004 AE000356 R002T4271J 270 OHM 1/4W R005 AE000499 R801R7823J 82K OHM 1/10W R006 AE000371 R801R7153J 15K OHM 1/10W R101 AE000380...
  • Page 33 All manuals and user guides at all-guides.com ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description RESISTORS R426 AE000145 R002T2561J 560 OHM 1/2W R427 AE002525 R801R7101J 100 OHM 1/10W R428 BZ210150 R002T2010J OHM 1/2W R429 AE002598 R002T2562J 5.6K OHM 1/2W R430 BZ210164 R002T4104J...
  • Page 34 All manuals and user guides at all-guides.com ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description RESISTORS R725 AE000934 R002T2391J 390 OHM 1/2W R726 AD301003 R801R7102J OHM 1/10W R727 AE000368 R801R7104J 100K OHM 1/10W R728 AE000368 R801R7104J 100K OHM 1/10W R736 AD301728 R801R7103J...
  • Page 35 All manuals and user guides at all-guides.com ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description CAPACITORS C218 AE000316 CS0RB04H4K 0.022 UF 50V B C220 BZ110042 E02LU1471M 470 UF 10V C221 AE000311 CS0RB0315K 0.1 UF 25V B C403 BZ110149 E02LT4471M 470 UF 35V...
  • Page 36 All manuals and user guides at all-guides.com ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description CAPACITORS C725 AE000336 E02LU1101M 100 UF 10V C726 AE000325 CS0RCH4Q2J 470 PF 50V CH C727 AE000325 CS0RCH4Q2J 470 PF 50V CH C731 AE000312 CS0RB0414K 0.01 UF 50V B...
  • Page 37 All manuals and user guides at all-guides.com ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description IC101 AE001701 I5PD0F013B OECF013B IC102 AD301641 I9UF032310 PST3231NR IC199 AE002599 A3M511N015 S-24C16AFJA-TB-01 IC201 AE001625 I0WDE2248E STV2248E ! IC401 BZ611081 I0WTD81740 TDA8174A IC502 BZ611089 I1KA98R09A KIA78R09API...
  • Page 38 All manuals and user guides at all-guides.com ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Part No. Description SWITCHES ! SW501 AE000574 0530105019 SWITCH ESB92S22B VARIABLE RESISTORS VR401 BZ210238 V1K6313BTE VOLUME,SEMI FIXED NVG6TLTAB102 VR420 AE000038 V1K62Q2BT8 VOLUME,SEMI FIXED NVG6THTB471 VR501 BZ210128 V1163H3BTC VOLUME,SEMI FIXED...
  • Page 39 All manuals and user guides at all-guides.com TOSHIBA Information Systems (UK) Ltd Consumer Products Division, European Service Centre, Admiralty Way, Camberley, Surrey. GU15 3DT...

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