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Toshiba 14AF43 Service Manual

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FILE NO. 050-200307

SERVICE MANUAL

COLOR TELEVISION
14AF43
DOCUMENT CREATED IN JAPAN, Apr., 2003

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  • Page 1: Service Manual

    FILE NO. 050-200307 SERVICE MANUAL COLOR TELEVISION 14AF43 DOCUMENT CREATED IN JAPAN, Apr., 2003...
  • 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

    TABLE OF CONTENTS SERVICING NOTICES ON CHECKING ..................A1-1 A1-1 HOW TO ORDER PARTS ......................IMPORTANT ..........................A1-1 TABLE OF CONTENTS ......................A2-1 A3-1~A3-5 GENERAL SPECIFICATIONS ....................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 / 357mmV System CRT Type Flat Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2 Speaker Position Front Side Size 1.6 x 2.8 Inch Impedance Sound Output 2.5+2.5 W 10%(Typical) 2.0+2.0 W NTSC3.58+4.43 /PAL60Hz...
  • Page 5 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Icon Picture Contrast Brightness Color Tint Sharpness Audio Bass Treble Balance Stable Sound On/Off Surround On/Off Set Up TV/CATV Auto CH Memory Add/ Delete Option Language CH Label Favorite CH V-Chip Lock On/Off Timer Color Stream DVD/DTV Control Level...
  • Page 6 GENERAL SPECIFICATIONS G-10 Remote Unit RC-GF Control Glow in Dark Remocon Format Toshiba Custom Code TV:40-BFh Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys Keys Keys Power CH Up/+ CH Down/- Volume Up/+ Volume Down/- C.C.(TV/Caption/Text)
  • Page 7 Features Auto Degauss Auto Shut Off Canal+ CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type USA,Toshiba Type Auto Search CH Allocation Just Clock Function CH Label VM Circuit Full OSD Premiere Comb Filter Lines Auto CH Memory Hotel Lock...
  • Page 8 GENERAL SPECIFICATIONS G-13 Interface Switch Front Power 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 Yes(RED) Stand-by On Timer Terminals Front Video Input = VIDEO3 Audio Input = VIDEO3 RCA x 2 Other Terminal...
  • 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 When IC starts moving back and forth easily after REMOVAL AND INSTALLATION OF desoldering completely, pickup the corner of the IC using a FLAT PACKAGE IC 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-tip Take care of the polarity of new IC and then install the new Soldering Iron. (Refer to Fig. 2-8.) 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 1 second. Set Key Remocon Key Operations Releasing of V-CHIP PASSWORD.
  • Page 13: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: CONSTANT VOLTAGE Read and perform these adjustments when repairing the Place the set with Aging Test for more than 5 minutes. circuits or replacing electrical parts or PCB assemblies. Set condition is AV MODE without signal. Using the remote control, set the brightness and contrast CAUTION to normal position.
  • Page 14 ELECTRICAL ADJUSTMENTS 2-7: VERTICAL SIZE 2-10: TINT/COLOR CENT Receive the monoscope pattern. Receive the color bar pattern. (RF Input) Connect the oscilloscope to TP024. Using the remote control, set the brightness and contrast to normal position. Using the remote control, set the brightness, contrast, color and tint to normal position.
  • Page 15 ELECTRICAL ADJUSTMENTS 2-11: CONTRAST MAX MANUAL 2-13: LEVEL Activate the adjustment mode display of Fig. 1-1 and Receive the monoscope pattern (70dB). press the channel button (18) on the remote control to Connect the AC voltmeter to pin 6 of CP101. Activate the adjustment mode display of Fig.
  • Page 16: Purity And Convergence

    ELECTRICAL ADJUSTMENTS 3-3: STATIC CONVERGENCE 3. PURITY AND 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.
  • Page 17 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB CP806 TP024 R805 TP023 R803 J801 CP802B CP803 CP801B CD801 CD802 CP801A CP101 FB401 CP401 VR401 TP003 W003 VR502 SPEAKER CP802A L503 CP502 AC IN CP1001 J705 J706 CD501 J707 MAIN PCB...
  • Page 18: Block Diagram

    BLOCK DIAGRAM A/V OUT J708 COMB FILTER IC CHROMA IC IC1501 LA76600M-TLM IC601 M61283FP C OUT FB401 Y OUT Y IN VIDEO LINE OUT J801 Q603, Q614, Q605 Q802, Q806 VIDEO SW(Y) IC BLUE OUT B OUT IC1502 MM1501XNRE Q801, Q804 S-JACK RED/GREEN J702...
  • Page 19: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE C426 CD801A C427 CP101 J702 W827 CP801A J701 J704 J703 J708 D411 D407 C413_1 D705 D701 D405 D704 D703 W006 S804X D608 D702 W062 W134 W061 W850 W060 W132 R710 C425 W131 W813 W058 W819...
  • Page 20 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE Q101 R109 IC199_1 R724 R101 C719 C128 C720 R112 R113 R907 C312 C303 C102 C104 IC302 IC902 C115_1 C911 C301 R136 IC101 C148 R906 C917 R125 Q902 R137 R128 R150 C106 Q901 C913 R131...
  • Page 21: Micon

    MICON SCHEMATIC DIAGRAM ACCESSORY (MAIN PCB) BT001 R03(AB)E_2P_G OS101 TM101 RPM7138-H5 BT002 R25-1911 R03(AB)E_2P_G TEST POINT Vout LED SW Q101 R109 CP101 173979-7 KTC3875S_Y_RTK I2C_SCL I2C_SDA R101 I2C_OFF C145 R103 R106 AUDIO L 220P CH AUDIO R 2.7K R130 R150 CLAMP SW Q103 47K 1/4W...
  • Page 22: Chroma

    CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO AV VIDEO_IN2 V_IN[YUV] R616 VIDEO_IN1 120 1/2W AT+5V REG U_IN[YUV] R617 Q607 Y_IN[YUV] KTC3203_Y VIDEO_IN3 VIDEO_OUT R603 270 1/2W S804Y FROM/TO COMB FILTER FROM/TO MICON C_V_OUT_SW P.CON+5V PROTECT Y_V_OUT_SW P.CON+5V REG C641 VIDEO_OUT Q606 C IN(Y/C) Y SW OUT SW_Y_OUT...
  • Page 23 DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO DY V.OUTPUT IC IC401 AN5522 V801 CP401 THERMAL PROTECTION A36AKJ13X05 B06B-DVS PUMP UP L402_1 25.0 12.0 25.0 R407 ELH5L4112N 1.2K R439 TO CRT/SVM 1K 1W C425 CD803 (CP805) SM1098-009-1A 0.001 R414 R417 27K +-1% FROM/TO CHROMA V_OUT R402...
  • Page 24: Power

    POWER SCHEMATIC DIAGRAM (MAIN PCB) D516 RELAY DRIVE Q504 10.9 1SS133 KTC3198 R515 10K 1/4W C516 RY501 500V 0.001 ALKS321 TO SOUND R517_1 D505 W806 SOUND+B 30DF6-FC 1 3W R501 R541_1 DEGAUSS COIL L503 P.CON+12V CP502 8R140023 1 7W 0.22 1W A1561WV2-2P SOUND_GND S805Y...
  • Page 25: Sound

    SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM TUNER/STEREO R302 SW_AUDIO_L R301 2.7K 1/4W SW_AUDIO_R W832 2.7K 1/4W C309 0.039 L IN L ONT Tone Volume 2.2K SURR Balance Control Control /MUTE MODE control R IN Vref R OUT R303 100 1/4W FROM CHROMA R304 L301...
  • Page 26: Tuner/Stereo

    TUNER/STEREO SCHEMATIC DIAGRAM (MAIN PCB) TU001 115-V-K015AR B FROM/TO CHROMA TUNER+5V NC NC TUNER_VIDEO W812 P.CON+8V[B] P.CON+5V FROM POWER R001 P.CON+B 68K 1/2W R002 68K 1/2W TO MICON FROM/TO MICON J_AUDIO_OUT_L C901 BUFFER Q901 KTA1504S_Y_RTK J_AUDIO_OUT_R C902 BUFFER Q902 KTA1504S_Y_RTK TO SOUND L901 SW_AUDIO_L...
  • Page 27 AV SCHEMATIC DIAGRAM (MAIN PCB) YUV_IN(REAR) J704 FROM/TO CHROMA MSP-213V1-652_PBSN V_IN[YUV] U_IN[YUV] Y_IN[YUV] S804X VIDEO_OUT VIDEO_IN2 A/V_OUT(REAR) VIDEO_IN1 J708 MSP-213V2-432_PBSN VIDEO_IN3 C711 R708 C707 R704 R702 C728 R721 22 1/4W MUTE R703 Q711 R711 KTC3875S_Y_RTK 2.2K C710 MUTE BUFFER Q712 R710 Q709 KANP...
  • Page 28: Crt

    CRT SCHEMATIC DIAGRAM (CRT PCB) CRT BLOCK (W/O SVM) FROM DEFLECTION CP806 005P-2100 FROM DEFLECTION CP801B B2013H02-5P W802 180V HEATER FOCUS R802 FROM CHROMA 2.7K 1/4W R803 RED/GREEN OUT CP802B B2013H02-7P Q804 RED/GREEN OUT CLAMP 15K 2W KTC4217 Q801 100.6 123.0 KTC3199_Y R.OUT...
  • Page 29: Comb/Filter

    COMB/FILTER SCHEMATIC DIAGRAM (MAIN PCB) L1511 15uH 0305 BUFFER Q1508 KTC3875S_Y_RTK C1535 L1505 FROM AV 15uH 0305 S_VIDEO_IN[C] S_VIDEO_IN[Y] R1512 BUFFER Q1503 C1513 KTC3875S_Y_RTK 0.1 B VIDEO SW(Y) IC IC1502 C1519 FROM MICON MM1501XNRE Vin1 Y/C_SW V.OUT Vin2 VIDEO SW(C) IC IC1503 MM1501XNRE FROM/TO CHROMA...
  • Page 30: Waveforms

    WAVEFORMS MICON SOUND 100µs 50mV 5µs 200mV 20µs 50µs 100mV 50µs 20µs 100mV DEFLECTION 20µs 200mV 200V NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 31 WAVEFORMS 20µs 20µs 200mV 20µs 200mV 20µs 20µs NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 32: Mechanical Exploded Views

    MECHANICAL EXPLODED VIEW PCB110 (CRT PCB ASS'Y) PCB010 101I (MAIN PCB ASS'Y) 101H 101E 101C 101G 101F 101E 101I 101B 101D 101A...
  • Page 33: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AD302277 A3M801J720 CABINET,FRONT ASSY 101A AD302278 701WPJC097 CABINET,FRONT 101B AD302279 711WPA0187 PLATE,FRONT 101C AD302280 713WPA0274 GLASS,LED 101D AE000539 723549A016 BADGE,GRAND 101E AE000540 735WPBA657 BUTTON,FRAME 101F AE000541 735WPJA773 BUTTON,POWER 101G AD302009 735WPA0728 STOPPER,BUTTON...
  • Page 34: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS ! R402 BZ210021 R65582680J R,FUSE OHM 1/2W ! R410 BZ210087 R3X18A221J R,METAL OXIDE 220 OHM 2W ! R426 BZ210030 R4X5T4472F R,METAL 4.7K OHM 1/4W ! R436 BZ210023 R4X5T4183F R,METAL 18K OHM 1/4W ! R438...
  • Page 35 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES D415 BZ410043 D2WT011E10 DIODE,SILICON 11E1-EIC ! D501 BZ410062 D2WTRM11C0 DIODE,SILICON RM11C-EIC ! D502 BZ410062 D2WTRM11C0 DIODE,SILICON RM11C-EIC ! D503 BZ410062 D2WTRM11C0 DIODE,SILICON RM11C-EIC ! D504 BZ410062 D2WTRM11C0 DIODE,SILICON RM11C-EIC ! D505 AD300076...
  • Page 36 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description TRANSISTORS Q601 BZ510105 TCAT03209Y TRANSISTOR,SILICON KTC3209_Y-AT Q602 BZ510105 TCAT03209Y TRANSISTOR,SILICON KTC3209_Y-AT Q603 BZ510109 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q604 BZ510105 TCAT03209Y TRANSISTOR,SILICON KTC3209_Y-AT Q605 BZ510109 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q606 BZ510105 TCAT03209Y TRANSISTOR,SILICON KTC3209_Y-AT Q607...
  • Page 37 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description MISCELLANEOUS ! CD501 AE000566 1209619901 CORD,AC BUSH 9619901 CD801 AE000567 WCL6826038 FLAT CABLE AWM2468 AWG26 5C GRAY 260MM CD802 AE000568 WEL6836038 FLAT CABLE AWM2468 AWG26 7C GRAY 360MM CD803 BZ614175 06CU82039A CORD,CONNECTOR...
  • Page 38 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...