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Toshiba 14N21ES Service Manual

Colour television
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FILE NO: 050-200302
TOSHIBA
SERVICE MANUAL

COLOUR TELEVISION

14N21ES
PRINTED IN UK. 2003 C

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  Summary of Contents for Toshiba 14N21ES

  • Page 1: Colour Television

    FILE NO: 050-200302 TOSHIBA SERVICE MANUAL COLOUR TELEVISION 14N21ES PRINTED IN UK. 2003 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 14 inch / 335.4mmV System CRT Type Normal Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System PAL/SECAM Speaker 1 Speaker Position Bottom Size 3 Inch Impedance Sound Output 10%(Typical) 0.8 W DDR SECAM NTSC3.58(AV)+NTSC4.43 PAL60Hz Tuning...
  • Page 5 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Character Picture Contrast Brightness Color Tint (NTSC Only) Sharpness Audio Bass Treble Balance BBE On/Off Stable Sound On/Off CH Tuning Manual Auto CH Allocation Language Clock Set On/OffTimer Set On Timer Set Pin Code Registration Select Picture Panel Lock...
  • Page 6 GENERAL SPECIFICATIONS G-10 Remote Unit RC-FK (CT-835) 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 Keys Keys Power Volume Up / + Volume Down / - Previous Select Picture Menu...
  • Page 7 GENERAL SPECIFICATIONS G-12 Accessories Owner's Manual Language Hungarian,Czech,Slovak,Polish,Bulgarian, Romanian,Slovenian,Croatian,Russian w/Guarantee Card Remote Control Unit Rod Antenna Poles 2Pole Terminal D-type Loop Antenna Terminal U/V Mixer DC Car Cord (Center+) Guarantee Card Warning Sheet Circuit Diagram Antenna Change Plug Service Facility List Important Safeguard Yes (Owner's Manual In) Dew/AHC Caution Sheet...
  • Page 8 GENERAL SPECIFICATIONS G-16 Carton Master Carton Content ---- Sets Material Dimensions W x D x H(mm) x -- x -- Description of Origin Gift Box Material Double/Brown Dimensions W x D x H(mm) x 408 x 380 Design As per Buyer's Description of Origin Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces...
  • Page 9: Disassembly Instructions

    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

    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: When Replacing Eeprom( Memory) Ic

    WHEN REPLACING EEPROM (MEMORY) IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. Table 1 Enter DATA SET mode by setting VOLUME to minimum.
  • Page 14: 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. Connect the digital voltmeter to TP501. CAUTION Set condition is AV MODE without signal.
  • Page 15 ELECTRICAL ADJUSTMENTS 2-6: WHITE BALANCE 2-10: VERTICAL SIZE NOTE: Adjust after performing CUT OFF adjustment. NOTE: Adjust after performing adjustments in section 2-8. Receive the monoscope pattern from the Pattern Place the set with Aging Test for more than 15 minutes. Generator.
  • Page 16 ELECTRICAL ADJUSTMENTS 2-15: Confirmation of Fixed Value (Step No.) 2-13: COLOR CENT Please check if the fixed values of the each adjustment Receive the PAL color bar pattern. (RF Input) items are set correctly referring below. Using the remote control, set the brightness, contrast and color to normal position.
  • Page 17: 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 18 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CD801 R807 TP023 CP801 J801 R803 CP802B TP022 CRT PCB CD802 J701 PH001 CP101 CP802A FB401 CP401 VR401 VR420 TP001 TU001 R503 VR501 TP501 CP502 AC IN CP1001 CD501 CP501 SPEAKER J1001 J702...
  • Page 19: Block Diagram

    BLOCK DIAGRAM VOL UP AT+5V TU001 MICON IC VOL DOWN IC101 OECF005B SCL SDA Q102 CH UP ON_TIMER LED LED SW Q103 D105 KEY_IN CH DOWN ON TIMER LED SW P.CON+5V SDA 13 CHROMA IC AVDD1 IC201 STV2248C V-DRIVE IC SCL 14 STAND BY IC401 TDA8174A...
  • Page 20: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE TP402 TP401 R501 C122 C505 L501_1 C526 CP502 R502 B502 CP501 C524 D523 C518 W017 W817 R421 TH501 W082 W836 W052 T401 D410 R445 IC501 W016 C542 R510 D508 Q402 R511 C440 T501 D507 R446...
  • Page 21 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE C806 R816 C804 R813 Q603 R618 R602 R646 C005 C004 R005 R639 R607 Q605 R611 D301 R310 C301 R623 C207 C303 R306 C201 R309 R312 Q301 Q604 R303 C306 C304 Q302 Q602 R219 Q204...
  • Page 22 MICON/TUNER SCHEMATIC DIAGRAM ACCESSORY BT001 (MAIN PCB) R03(AB)2PXGPI RESET IC ANT001 IC102 R3111N311A/C T4-216AP-BK BT002 TU001 TUWRF4EG-778F2 R03(AB)2PXGPI D105_1 LTL-1BEFJ-002A R145 TM101 R108 RC-FK01A 1.2K R139 OS101 RPM7138-H5 TP001 LED SW R104 R102 R109 Q103 KRA102SRTK 2.2K 2.2K PH001 D104 C110 C122 003P-2100...
  • Page 23 CHROMA/SIF/VIF/21PIN SCHEMATIC DIAGRAM (MAIN PCB) SIF BUFFER Q204 2SC2412K C629 R208 W822 CF202_3 CF304 TSF5330U MKT40.4MA110P W829 L206 C204 VIF PRE.AMP L204 BUFFER Q201 Q202 0.22uH 0.0022 B KTC3881S-RTK SECAM VL SW 10uH 2SC2412K RGB SW 2.28 Q303 R217 Q601 2SC2412K S101X 2SC2412K...
  • Page 24 POWER SCHEMATIC DIAGRAM (MAIN PCB) C509 500V 470P TO SOUND AMP R517 D505 SOUND+B SB290S P.CON+8V SOUND_GND W861 R506 W833 EMERGENCY 22K 1/4W Q504 2SA1624 D506 134.8 135.0 1SS133 C531 R528 RELAY SW Q505 10K 1/4W TO DEFLECTION/CRT KTC3203_Y R521 68K 1/4W C517 0.001...
  • Page 25 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) FROM/TOCHROMA/SIF/VIF/21PIN R422 CUT OFF CUT OFF 820 1/4W G.OUT G.OUT G.OUT R.OUT R.OUT R.OUT B.OUT B.OUT B.OUT V-DRIVE IC V_OUT IC401 TDA8174A VAMP HEATER HEATER ABCL H_OUT 180V 180V TO CRT FROM DEFLECTION CP802A CP802B 14.5 23.0 12.0...
  • Page 26 SOUND AMP SCHEMATIC DIAGRAM (MAIN PCB) J703 HTJ-032-05AW R712 820 1/4W L714 J702 HTJ-032-05AY 10uH 0305 C740 R740 220 1/4W CP1001 SPEAKER A2502WV2-2P W/WIRE SP1001 SA08A05BWB B1001 HEADPHONE_JACK W5RH3.5X5X1.0 J1001 MSJ-035-12A_PC FROM/TO CHROMA/SIF/VIF/21PIN SW_AUDIO_IN C1006 FRONT_VIDEO_IN 470P B SCART_AUDIO C1003_1 R1004 C1007 R1010...
  • Page 27: Micon/Tuner

    WAVEFORMS MICON/TUNER 0.2ms 20µs 500µs 1.00V 1.00V 50mV CHROMA/SIF/VIF/21PIN 0.2ms 20µs 1.00V 0.50V 200mV 100ns 0.5µs 20µs 20mV 1.00V 1.00V 20us 20µs 0.5µs 1.00V 0.50V 1.00V 10ms 20us 20µs 1.00V 1.00V 1.00V 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 10.0V 1.00V SOUND AMP 500us 20µs 20µs 100mV 5.00V 5.00V DEFLECTION/CRT 10us 10ms 200mV 1.00V 200V 500us 10ms 20µs 500mV 10.0V 10ms 20µs 10.0V NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 29: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB ASS'Y) FB401 L503 TU001 V801 SW501 101D PCB010 (MAIN PCB ASS'Y) 101E 101C SP1001 101B 101A...
  • Page 30: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION A3L811M720 CABINET,FRONT ASSY 101A 701UPJ0305 CABINET,FRONT 101B 713UPA0020 GUIDE,REMOCON 101C 713UPA0021 GLASS,LED 101D 735UPA0097 BUTTON,BASE 101E 735UPB0013 BUTTON,FRAME 761WPAA060 HOLDER,PCB 722549A147 SHEET,RATING 752WSA0272 SHIELD,AUDIO 735UPB0014 BUTTON,POWER 752WSA0286 SHIELD,IC 702UPA0239 CABINET,BACK 741WUA0019 SPRING,EARTH 752WSAA008 SHIELD , CASE 752WSAA006 PLATE , SHIELD 752WSAA013 SHIELD,LID...
  • Page 31: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS RESISTORS R001 R002T2183J 18K OHM 1/2W R417 R4X5T6332F R,METAL 3.3K OHM 1/6W R002 R002T2183J 18K OHM 1/2W R419 R801R7122J 1.2K OHM 1/10W R003 R002T4271J 270 OHM 1/4W R420 R801R7103J 10K OHM 1/10W...
  • Page 32 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS CAPACITORS R646 R801R7822J 8.2K OHM 1/10W C221 CS0RB0315K CC 0.1 UF 25V B R647 R002T2561J 560 OHM 1/2W C301 CS0RB0413K CC 0.001 UF 50V B R702 R801R7332J 3.3K OHM 1/10W...
  • Page 33 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION CAPACITORS C634 E00NU2470M CE UF 16 V IC703 I0QF022330 NJM2233BM-T1 C704 CS0RB0413K CC 0.001 UF 50V B IC1001 I01DP75110 AN7511 TRANSISTORS C705 CHGTB0413K CC 0.001 UF 50V B C706 CHGTB0413K CC 0.001 UF 50V B...
  • Page 34 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION MISCELLANEOUS B1001 024HT03553 CORE,BEADS W5RH3.5X5X1.0 BT001 1412004013 BATTERY,MANGAN R03(AB)2PXGPI BT002 1412004013 BATTERY,MANGAN R03(AB)2PXGPI ! CD501 1206655827 CORD AC BUSH 6655827 CD801 1278140030 BRAIDED WIRE SM1573-001 CD802 WHL6032038 FLAT CABLE AWG26 10C BLACK 320MM CF201 1012T5R507 FILTER CERAMIC TRAP...
  • Page 35 TOSHIBA Information Systems (UK) Ltd Consumer Products Division, European Service Centre, Admiralty Way, Camberley, Surrey. GU15 3DT...