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Toshiba 14AF44 Service Manual

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FILE NO. 050-200403

SERVICE MANUAL

COLOR TELEVISION
14AF44
DOCUMENT CREATED IN JAPAN, Mar., 2004

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  • Page 1: Service Manual

    FILE NO. 050-200403 SERVICE MANUAL COLOR TELEVISION 14AF44 DOCUMENT CREATED IN JAPAN, Mar., 2004...
  • 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-GW Control Glow in Dark Remocon Format Toshiba Custom Code TV:40-BF h 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...
  • 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 4. 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 new tip 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 CP501 CP1001 J705 J706 J707 MAIN PCB AC IN...
  • Page 18: Block Diagram

    BLOCK DIAGRAM COMB FILTER IC CHROMA IC IC1501 LA76605M-TLM IC601 M61283FP R70T C OUT FB401 VIDEO LINE OUT Y OUT Y IN J801 Q603, Q614, Q605 Q802, Q806 VIDEO SW(Y) IC BLUE OUT B OUT IC1502 MM1501XNRE Q801, Q804 S-JACK RED/GREEN J702 G OUT...
  • Page 19: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE CP801A CD801A C427 J702 D411 W827 J701 J703 J704 CP101 D705 D701 D407 D405 D704 W861 W006 D608 W134 D702 W062 W061 W060 W132 W850 W131 W813 TU001 W058 W819 C425 W820 FB401 D001 CP401...
  • Page 20 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE Q101 R109 IC199_1 R724 R101 C128 C719 C720 R112 R113 R907 C312 C303 C102 C104 IC302 IC902 C115_1 C911 C301 R136 IC101 R906 C917 R125 R128 C148 Q902 R137 R150 C106 C147 Q901 C913...
  • Page 21: Micon

    MICON SCHEMATIC DIAGRAM ACCESSORY (MAIN PCB) BT001 R03(AB)E_2P_G OS101 TM101 RPM7138-WH5 BT002 R25-1943 R03(AB)E_2P_G Vout LED SW Q101 R109 CP101 173979-7 KTC3875S_Y_RTK I2C_SCL I2C_SDA R101 I2C_OFF C145 R103 R106 AUDIO L 220P AUDIO R 2.7K R130 R150 CLAMP SW Q103 47K 1/4W KTC3875S_Y_RTK FROM/TO CHROMA...
  • 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 P.CON+5V 330 1/2W 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 LA78040 CP401 V801 B06B-DVS THERMAL PROTECTION A51LVV896X07(O) FROM MICON PUMP UP L402_1 25.0 12.0 25.0 R407 ELH5L4113 1.2K R439 1K 1W TO CRT/SVM C425 CD803 (CP805) 0.001 CP83035A R414 R417 27K +-1% FROM/TO CHROMA V_OUT...
  • Page 24: Power

    POWER SCHEMATIC DIAGRAM (MAIN PCB) D516 RELAY DRIVE Q504 10.9 1SS133 KTC3198 R515 10K 1/4W RY501 ALKS321 TO SOUND R517_1 D505 W806 SOUND+B 30DF6-FC 0.22 3W R541_1 DEGAUSS COIL R501 L503 P.CON+12V CP502 8R200024 1 7W 0.22 1W A1561WV2-2P SOUND_GND D517 CP507 COIL,LINE FILTER...
  • Page 25: Sound

    SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM TUNER/STEREO R302 SW_AUDIO_L R301 2.7K 1/4W SW_AUDIO_R 2.7K 1/4W C309 0.039 L IN L ONT R305 C323 R307 C325 0.0033 0.033 Tone Volume 2.2K SURR Balance Control R313 Control /MUTE 1K 1/4W MODE control R IN Vref R OUT...
  • 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 100uH 0305...
  • Page 27 AV SCHEMATIC DIAGRAM (MAIN PCB) YUV_IN(REAR) J704 FROM/TO CHROMA MSP-213V1-652_NI V_IN[YUV] U_IN[YUV] Y_IN[YUV] VIDEO_OUT VIDEO_IN2 A/V_OUT(REAR) VIDEO_IN1 J708 MSP-213V2-432_NI 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 KTC3875S_Y_RTK...
  • Page 28: 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 C1519 FROM MICON IC1502 MM1501XNRE Vin1 Y/C_SW V.OUT Vin2 VIDEO SW(C) IC IC1503 MM1501XNRE FROM/TO CHROMA...
  • Page 29: Crt/Svm

    CRT/SVM SCHEMATIC DIAGRAM (CRT PCB) TP804 PCB110 CRT BLOCK TCA391 R828 RED AMP Q801 123.5 2.7K 1/4W D804 D805 D806 R813 KTC4217 1SS133 1SS133 1SS133 220 1/4W D801 FROM CHROMA 1SS133 CP802B (CP802A) R855 A2001WV2-7P RED AMP Q810 P.CON+8V W808 1/2W W820 KTC3199_Y...
  • 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 (MAIN PCB ASS'Y) 101I 101H 101E 101C 101G 101F 101E 101I 101B 101D 101A...
  • Page 33 MECHANICAL EXPLODED VIEW (PACKING DIAGRAM) 119, 120, 121, 122, TM101...
  • Page 34: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AE003148 7A701A063A FRONT CABI ASS'Y 101A AE003149 701WPJC559 CABINET,FRONT 101B AD302279 711WPA0187 PLATE,FRONT 101C AD302280 713WPA0274 GLASS,LED 101D AE000539 723549A016 BADGE,BRAND 101E AE003150 735WPBA996 BUTTON,FRAME 101F AE003151 735WPJA820 BUTTON,POWER 101G AD302009 735WPA0728...
  • Page 35: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS ! R402 BZ210041 R635U2680J R,FUSE 68 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...
  • Page 36 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES ! D506 AD300731 D2WXN49370 DIODE,SILICON 1N4937 D507 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D508 BZ410064 D97U03R91B DIODE,ZENER MTZJ3.9B T-77 D509 AD300671 D97U01801B DIODE,ZENER MTZJ18B T-77 ! D510 AD301980 D2CF2016L0 DIODE,SILICON FE201-6L49 ! D511 AD300731...
  • Page 37 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description TRANSISTORS Q606 BZ510105 TCAT03209Y TRANSISTOR,SILICON KTC3209_Y-AT Q607 BZ510070 TCAT032034 TRANSISTOR,SILICON KTC3203_Y-AT Q611 BZ510105 TCAT03209Y TRANSISTOR,SILICON KTC3209_Y-AT Q614 BZ510108 TAAA1504SY TRANSISTOR,SILICON KTA1504S_Y_RTK ! Q801 AD301032 TCATC3199Y TRANSISTOR,SILICON KTC3199_Y-AT ! Q802 AD301032 TCATC3199Y TRANSISTOR,SILICON...
  • Page 38 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description SWITCHES CP508 BZ614444 069D01001A CONNECTOR PCB SIDE 003P-2100 CP803 BZ614269 069S320010 CONNECTOR PCB SIDE A2361WV2-2P CP806 BZ614058 069W010010 CONNECTOR PCB SIDE 005P-2100 CD1001 AE000569 06CU146901 CORD,CONNECTOR CU146901 CP1001 AD301045 069S140419 CONNECTOR PCB SIDE A2502WV2-4P...
  • Page 39 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...