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Toshiba 14N21NS manual

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Table of contents for the manual

  • Page 1

    SERVICE MANUAL PRINTED IN UK. 2002 C COLOUR TELEVISION 14N21NS TOSHIBA[...]

  • Page 2

    SERVICING NOTICES ON CHECKING 6. AVOID AN X-RAY 1. KEEP THE NOTICES As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual. 3. USE THE DESIGNATED PARTS 5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE Safety i[...]

  • Page 3

    CONTENTS A2-1 SERVICING NOTICES ON CHECKING ...................................................................................................... HOW TO ORDER PARTS ........................................................................................................................... IMPORTANT ..................................................[...]

  • Page 4

    GENERAL SPECIFICATIONS G-1 TV CRT CRT Size / Visual Size 14 inch / 335.4mmV System CRT Type Normal Deflection 90 degree Magnetic Field BV/BH +0.45G/0.18G Color System PAL Speaker 1 Speaker Position Bottom Size 1.5 x3.0 Inch Impedance 8 ohm Sound Output MAX 1.0 W 10%(Typical) 0.8 W DDR SECAM No NTSC3.58(AV)+NTSC4.43 Yes PAL60Hz Yes G-2 Tuning Broadc[...]

  • Page 5

    GENERAL SPECIFICATIONS G-7 On Screen Menu Yes Display Menu Type Character Picture Yes Contrast Yes Brightness Yes Colour Yes Tint (NTSC Only) Yes Sharpness Yes Audio No Bass No Treble No Balance No BBE On/Off No Stable Sound On/Off No CH Tuning Yes Matual Yes Auto Yes CH Allocation Yes Language Yes Clock Set No On/OffTimer Set Yes On Timer Set No P[...]

  • Page 6

    GENERAL SPECIFICATIONS G-10 Remote Unit RK-EY (CT-835) Control Glow in Dark Remocon No Format NEC Custom Code 40-BF h Power Source Voltage(D.C) 3V UM size x pcs UM-4 x 2 pcs Total Keys 32 Keys Keys Power Yes 1 Yes 2 Yes 3 Yes 4 Yes 5 Yes 6 Yes 7 Yes 8 Yes 9 Yes 0 Yes Volume Up / + Yes Volume Down / - Yes Previous Yes Select Picture Yes Menu Yes OK([...]

  • Page 7

    GENERAL SPECIFICATIONS G-12 Accessories Owner's Manual Language Swedish, Norwegian, Danish, Finnish, Turkish w/Guarantee Card No Remote Control Unit Yes Rod Antenna Yes Poles 2Pole Terminal D-type Loop Antenna No Terminal - U/V Mixer No DC Car Cord (Center+) No Guarantee Card No Warning Sheet No Circuit Diagram No Antenna Change Plug No Servic[...]

  • Page 8

    GENERAL SPECIFICATIONS G-16 Carton Master Carton No Content ---- Sets Material -- /-- Dimensions W x D x H(mm) -- x -- x -- Description of Origin Yes Gift Box Yes Material Double/Brown Dimensions W x D x H(mm) 440 x 408 x 380 Design As per Buyer's Description of Origin Yes Drop Test Natural Dropping At 1 C orner / 3 E dges / 6 Su rf aces Heigh[...]

  • Page 9

    1. REMOVAL OF ANODE CAP Read the following NOTED items before starting work. After turning the power off there might still be a potential voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage. Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring[...]

  • Page 10

    B2-1 Masking Tape (Cotton Tape) DISASSEMBL Y INSTRUCTIONS 2. REMOVAL IC Put the Masking Tape (cotton tape) around the Flat Package IC to protect other parts from any damage. (Refer to Fig. 2-1.) 1. Fig. 2-1 NOTE REMOVAL AND INSTALLATION OF FLAT PACKAGE IC Some ICs on the PCB are affixed with glue, so be careful not to break or damage the foil of ea[...]

  • Page 11

    B2-2 DISASSEMBL Y INSTRUCTIONS Supply soldering from upper position to lower position IC Supply the solder from the upper position of IC leads sliding to the lower position of the IC leads. (Refer to Fig. 2-6.) 2. Fig. 2-6 Soldering Iron Solder IC Absorb the solder left on the lead using the Braided Shield Wire. (Refer to Fig. 2-7.) 3. Fig. 2-7 Sol[...]

  • Page 12

    C-1 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 VOL. (-) MIN 0 Reset the user setting items (PICTURE, VOLUME and LANGUAGE) to the initial state for deliv[...]

  • Page 13

    C-2 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. WHEN REPLACING EEPROM (MEMORY) IC Table 1 1. 2. Enter DATA SET mode by setting VOLUME to minimum. Press both VOL. DOWN button on the set and Channel button ([...]

  • Page 14

    ELECTRICAL ADJUSTMENTS D-1 2. BASIC ADJUSTMENTS 2-1: CONSTANT VOLTAGE 1. 2. 3. 4. Place the set with Aging Test for more than 5 minutes. Connect the digital voltmeter to TP501 . Set condition is AV MODE without signal. Adjust the VR501 until the DC voltage is 135 ± 0.5V. 1. ADJUSTMENT PROCEDURE Read and perform these adjustments when repairing the[...]

  • Page 15

    ELECTRICAL ADJUSTMENTS D-2 Receive an 70dB monoscope pattern. Turn the Focus Volume fully counterclockwise once. Adjust the Focus Volume until picture is distinct. 2-6: FOCUS 1. 2. 3. 2-7: HORIZONTAL POSITION 1. 2. 3. 4. 5. 6. 7. 8. Receive the monoscope pattern from the Pattern Generator. Using the remote control, set the brightness and contrast t[...]

  • Page 16

    ELECTRICAL ADJUSTMENTS D-3 2-13: TINT 1. 2. 3. 4. 5. Receive the PAL color bar pattern. (Audio Video Input) Using the remote control, set the brightness and contrast to normal position. Connect the oscilloscope to TP023 . Activate the adjustment mode display of Fig. 1-1 and press the channel button (20) on the remote control to select "TINT&qu[...]

  • Page 17

    ELECTRICAL ADJUSTMENTS D-4 3. 1. 2. 3. 1. 2. 3. 4. 5. 6. 7. 8. 3-2: PURITY NOTE Adjust after performing adjustments in section 3-1. 1. 2. 3. 4. 5. Receive the green raster pattern from color bar generator. Adjust the pair of purity magnets to center the color on the screen. Adjust the pair of purity magnets so the color at the ends are equally wide[...]

  • Page 18

    D-5 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) MAIN PCB J1001 J702 J703 FB401 VR501 TP501 R503 VR401 VR420 J701 CP101 TU001 TP001 SPEAKER CP1001 CD801 CP501 AC IN CD501 CRT CP502 CRT CP401 PH001 CP802A TP022 R803 TP023 R807 J801 CRT CP801 CP802B CD802 CRT PCB[...]

  • Page 19

    MAIN W/T.TEXT IC101 OECF004A TU001 CHROMA IC201 STV2246C SOUND AMPIC IC1001 AN7511 V-DRIVE IC401 TDA8714A FB401 SW TRANS T501 CVBSOUT1 XTAL2 29 39 VCC_IF VCC_D 53 12 OSD-R 36 XTAL1 40 VCC1 VCC2 17 45 OSD-G 35 OSD-B 34 FM_OUT 11 7 1 5 4 11 SCL SDA BPL AGC IF 7 6 8 I2C P.CON+5V SDA 13 OSD-B OSD-G 10 9 SCL 14 OSD-R CVBS2 29 11 CVBS1 30 SDA 5 SCL 6 MEM[...]

  • Page 20

    C401 R408 VR420 J701 C503 C 5 02 C446 C412_1 Q501 R707 R706 W086 R407 C408 C414 C417 C418 R416 R403 R409 R410 HS401 IC401 C629 L702 L703 R703 C437 R417 CP802A Q401 R502 CP401 C410 R402 T401 R445 R446 R516 C526 R647 R 429 VR501 R518 C403 C448 L501_1 C518 C505 CP502 FH502 FH501 F501 CP501 SW501 R421 W094 W082 C443 R411 D501 R447 C423 L401 R427 TH501 [...]

  • Page 21

    CUT CUT 17 33 49 1 C703 R419 R709 R644 C413 R406 R412 R702 R713 R714 R715 C701 R523 R531 C541 R530 R533 R534 C624 C605 C612 C607 C603 R217 Q603 R630 R629 R628 C608 R205 C218 Q201 C204 C212 R202 R215 C609 C601 C625 R214 R201 C202 C207 R218 R622 C616 C615 R608 C221 C215 Q202 Q204 R618 C614 R204 R203 R208 C618 C619 C620 R607 R638 R645 R636 R639 C205 C[...]

  • Page 22

    ABC D E F G H ABC D E F G H 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 CAUTION: DIGITAL TRANSISTOR IC199 S-24C04BDP-LA MEMORY 1234 5 6 7 8 SW106 SKHVBED010 CH UP SW107 SKHVBED010 CH DOWN SW102 SKHVBED010 VOL UP SW104 SKHVBED010 VOL DOWN R144 10K R004 270 1/4W R003 270 1/4W R104 820 R102 2.2K R116 10K R117 270 R139 390 R109 2.2K R107 100 1/4W R133 100 1/4W R11[...]

  • Page 23

    ABC D E F G H ABC D E F G H 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 S101X S101Y IC201 STV2246C CHROMA 1 1 01 11 21 31 41 51 61 71 81 9 2 20 21 22 23 24 25 26 27 28 29 3 30 31 32 33 34 35 36 37 38 39 4 40 41 42 43 44 45 46 47 48 49 5 50 51 52 53 54 55 56 6789 L703 10uH L702 10uH L204 10uH L203 1uH Q603 2SC2412K H.CONT Q204 2SC2412K SIF BUFFER Q602 2SC2412K [...]

  • Page 24

    ABC D E F G H ABC D E F G H 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 Q511 KTA1281_Y P.CON SW Q506 2SA1037AK P.FAIL Q504 2SA1624 EMERGENCY DESCRIBED IN PARTS LIST ONLY CRITICAL FOR SAFETY,USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION: DANS LA NOMENCLATURE DES PIECES N’UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPA[...]

  • Page 25

    ABC D E F G H ABC D E F G H 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 Q401 2SD2499 H.OUTPUT CD801 SM1573-001 CP801_1 003P-2100 1 F J801 HPS3200-010501 1 3 4 5 6 7 8 9 B G R 11 6 8 10 9 1 7 5 V801 A34AGT13X98(L) T401 ETH09K14BZ 1 2 34 6 CP401 A1561WV2-A5P 1 2 3 4 5 CP802A B2013H02-10P 1 10 2 3 4 5 6 7 8 9 CP802B B2013H02-10P 1 10 2 3 4 5 6 7 8 9 IC401 TDA8174[...]

  • Page 26

    ABC D E F G H ABC D E F G H 2 1 3 4 5 6 7 8 2 1 3 4 5 6 7 8 J1001 MSJ-035-12A_PC HEADPHONE_JACK 1 2 3 SPEAKER SP1001 SA08A05BWB W/WIRE HN C E J703 HTJ-032-05AW 1 23 HN C E J702 HTJ-032-05AY 1 23 DESCRIBED IN PARTS LIST ONLY CRITICAL FOR SAFETY,USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION: DANS LA NOMENCLATURE DES PIECES N’UTILISER QUE CELLS D[...]

  • Page 27

    WAVEFORMS MICON/TUNER 1 CHROMA/SIF/VIF/21PIN 2 3 4 5 10 9 8 7 6 12 13 14 15 H-1 The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram. NOTH: 0.2ms 1.00V 0.2ms 1.00V 0.5 µ s 1.00V 0.5 µ s 1.00V 10ms 1.00V 20us 1.00V 20us 0.50V 20 µ s 1.00V 2ms 0.50V 20 µ s 1.00V 20 µ s 200mV 100ns 20mV 2[...]

  • Page 28

    WAVEFORMS SOUND AMP DEFLECTION/CRT 17 18 19 20 21 22 23 24 25 26 27 28 29 The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram. NOTH: H-2 20 µ s 5.00V 10ms 1.00V 10ms 10.0V 10ms 10.0V 20 µ s 10.0V 20 µ s 50V 20 µ s 50V 20 µ s 50V 2us 200V 20 µ s 5.00V 500us 100mV 10us 200mV 500us 500m[...]

  • Page 29

    MECHANICAL EXPLODED VIEW 201 201 201 114 201 PCB110 (CRT PCB) 110 112 202 202 202 202 202 204 101 105 106 107 109 108 111 203 115 102 103 104 207 206 206 205 113 PCB010 (MAIN PCB) I-1[...]

  • Page 30

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION 101 A3L804M720 CABINET,FRONT ASSY 102 752WSA0216 SHIELD,CASE 103 752WSA0272 SHIELD,AUDIO 104 752WSA0286 SHIELD,IC 105 701UPJ0305 CABINET,FRONT 106 713UPA0020 GUIDE,REMOCON 107 713UPA0021 GLASS,LED 108 735UPA0097 BUTTON,BASE 109 735UPB0013 BUTTON,FRAME 110 702UPA0239 CABINET,BACK 111 76[...]

  • Page 31

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS RESISTORS R001 R002T2183J RC 18K OHM 1/2W ! R501 R5X2CD5R6J R,CEMENT 5.6 OHM 5W R002 R002T2183J RC 18K OHM 1/2W R502 R002T2155J RC 1.5M OHM 1/2W R003 R002T4271J RC 270 OHM 1/4W R503 R3X18A1R2J R,METAL OXIDE 1.2 OHM 2W R004 R002T4271J RC 270 OHM 1[...]

  • Page 32

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION RESISTORS CAPACITORS R714 R801R7750J RC 75 OHM 1/10W C435 P235W1104J CMP 0.1 UF 100V MKT R715 R801R7750J RC 75 OHM 1/10W C437 P4J7F3394J CMPP 0.39 UF 250V PMS R719 R801R7104J RC 100K OHM 1/10W C440 P235W1103J CMP 0.01 UF 100V MKT R740 R002T4221J RC 220 OHM[...]

  • Page 33

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION CAPACITORS TRANSISTORS C1004 CS0RB04W2K CC 820 PF 50V B Q511 TAAT01281Y TRANSISTOR,SILICON KTA1281_Y C1005 E50HU5010M CE 1 UF 50V Q512 TPAAB05001 COMPOUND TRANSISTOR KRA102SRTK C1006 CS0RB04Q2K CC 470 PF 50V B Q601 T8YJ2412K0 TRANSISTOR,SILICON 2SC2412KT14[...]

  • Page 34

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION MISCELLANEOUS OS101 0773071001 REMOTE RECEIVER RPM7138-H5 PH001 069D01001A CONNECTOR PCB SIDE 003P-2100 or 069W01001A CONNECTOR PCB SIDE 003P-2100 RY501 0560V20115 RELAY ALKS321 SP1001 070C732003 SPEAKER SA08A05BWB TH501 D8E0J80A10 DEGAUSS ELEMENT B59104-J80-A10 TM101 076N0FK010 TRANSM[...]