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Toshiba 27AF46C Service Manual

Toshiba 27af46c color television service manual
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SERVICE MANUAL

COLOR TELEVISION
The above model is classified as a green product (*1), as indicated by the underlined serial number.
This Service Manual describes replacement parts for the green product. When repairing this green
product, use the part(s) described in this manual and lead-free solder (*2).
For (*1) and (*2), see the next page.
FILE NO. 050-200540GR
27AF46C
DOCUMENT CREATED IN JAPAN, January, 2006 GREEN
(MFR'S VERSION B)

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Summary of Contents for Toshiba 27AF46C

  • Page 1: Service Manual

    (MFR’S VERSION B) SERVICE MANUAL COLOR TELEVISION 27AF46C The above model is classified as a green product (*1), as indicated by the underlined serial number. This Service Manual describes replacement parts for the green product. When repairing this green product, use the part(s) described in this manual and lead-free solder (*2).

  • Page 2: Green Product Procurement

    Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any marketing of new products containing the restricted substances. Increasing attention is given to issues related to the global environmental. Toshiba Corporation recognizes environmental protection as a key management tasks, and is doing its utmost to enhance and improve the quality and scope of its environmental activities.

  • Page 3: 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 4: Table Of Contents

    TABLE OF CONTENTS GREEN PRODUCT PROCUREMENT ..................A1-1 LEAD-FREE SOLDER ........................ A1-1 SERVICING NOTICES ON CHECKING ..................A1-2 HOW TO ORDER PARTS ......................A1-2 IMPORTANT ..........................A1-2 TABLE OF CONTENTS ......................A2-1 GENERAL SPECIFICATIONS ....................A3-1~A3-5 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP ....................B1-1 2.

  • Page 5: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 27 inch / 676.0mmV System CRT Type Flat Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2 Speaker Position Front Side Size 1.8 x 3.9 Inch Impedance Sound Output 5.0+5.0 W 10%(Typical) 4.0+4.0 W NTSC3.58+4.43 /PAL60Hz...
  • Page 6 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Icon Picture Contrast Brightness Color Tint Sharpness Sound Bass Treble Balance BBE On/Off 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...
  • Page 7 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 8 GENERAL SPECIFICATIONS G-11 Features Auto Degauss Auto Shut Off Canal+ CATV Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type Auto Search CH Allocation Just Clock Function CH Label VM Circuit Full OSD Premiere Comb Filter Lines Auto CH Memory Hotel Lock Closed Caption Stable Sound FBT Leak Test Protect...
  • Page 9 Edges / 4 Surfaces Height (cm) 40 (ORION SPEC:25) Container Stuffing Sets/40' container G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM Cabinet Rear PS 94V0 DECABROM Non-Halogen Demand Eyelet Demand G-18 Environment Environmental standard requirement Green procurement of TOSHIBA Pb-free Phase3(Phase3A) A3-5...

  • Page 10: 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 11: 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 12 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 13: Service Mode List

    SERVICE MODE LIST This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter to 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 and LOCK PASSWORD.

  • Page 14: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 2. BASIC ADJUSTMENTS 1. ADJUSTMENT PROCEDURE Read and perform these adjustments when repairing the 2-1: CONSTANT VOLTAGE circuits or replacing electrical parts or PCB assemblies. Place the set in AV MODE without signal. CAUTION Connect the digital voltmeter to the TP003. Adjust the VR502 until the digital voltmeter is 135 0.5V.
  • Page 15 ELECTRICAL ADJUSTMENTS 2-4: COLOR CENT Receive the color bar pattern. (RF Input) Using the remote control, set the brightness, contrast, color and tint to normal position. Connect the oscilloscope to TP804. Activate the adjustment mode display of Fig. 1-1 and press the channel button (22) on the remote control to select "COLOR CENT".
  • Page 16 ELECTRICAL ADJUSTMENTS 2-9: VERTICAL LINEARITY 2-13: BRIGHT CENT NOTE: Adjust after performing adjustments in section 2-8. Receive the monoscope pattern. (RF Input) After the adjustment of Vertical Linearity, reconfirm Using the remote control, set the brightness and contrast the Vertical Position and Vertical Size adjustments. to normal position.
  • Page 17 ELECTRICAL ADJUSTMENTS 2-17: SEPARATION 1, 2 2-19: Confirmation of Fixed Value (Step No.) Please check if the fixed values of the each adjustment Please do the method (1) or method (2) adjustment. items are set correctly referring below. Method (1) FUNCTION Set the multi-sound signal generator for each different H.VCO...

  • Page 18: 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 19 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB CP804 CP803 CD852 CP852 J801 CP852B VM COIL PCB CP802B CP801B CP851B CD801 CD851 CD802 CP801A J702 CP101 J708 J704 J703 J701 FB401 CP401 TP003 VR401 W003 POWER PCB VR502 CP851A CP802A...

  • Page 20: Block Diagram

    BLOCK DIAGRAM A/V OUT J708 COMB FILTER IC Q852, Q583 Q854 Q855 ~ Q859 CHROMA IC IC1501 LA76605M-TLM-E IC601 M61283FP R70T BUFFER BUFFER VM COIL C OUT Q610 Q613 FB401 VIDEO LINE OUT SVM OFF Y IN DELAYDE Y OUT Y OUT J801 Q603, Q614, Q605...

  • Page 21: Printed Circuit Boards Main

    PRINTED CIRCUIT BOARDS MAIN (INSERTED PARTS) SOLDER SIDE C427_1 CP101 CP801A J702 C426 J701 J703 J704 J708 B401 D411 D701 D608 C413_1 D407 D405 D704 D703 W861 W006 D705 D702 R459_2 C421 W062 W134 W061 W060 W132 C442 W131 R710 W819 W058 W057...
  • Page 22 PRINTED CIRCUIT BOARDS MAIN (CHIP MOUNTED PARTS) SOLDER SIDE Q101 R109 IC199_1 R724 R101 C719 R112 R113 R907 C102 C104 IC302 IC902 R136 IC101 R305 R906 R125 R128 Q902 IC301 R137 R150 R127 Q901 R131 Q103 C636 R644 C138 C136 C137 Q613 Q610 CMD016A...
  • Page 23 PRINTED CIRCUIT BOARDS CRT/VM COIL POWER SOLDER SIDE SOLDER SIDE TP806 CP201 D809 D807 L801 R808 Q810 R201 TP804 W808 Q201 CED039A W822 R804 S806Y W821 Q202 R812 W890 TP805 D808 R806 R820 C201 W807 Q812 W007 C805 Q811 Q853 R819 R814 Q852...

  • Page 24: Micon

    MICON SCHEMATIC DIAGRAM ACCESSORY (MAIN PCB) BT001 MNAAA(R03) OS101 TM101 RPM7138-WH5 BT002 R25-1943 MNAAA(R03) TEST POINT Vout LED SW Q101 R109 CP101 A2001WR2-7P KTC3875S_Y_RTK I2C_SCL I2C_SDA R101 I2C_OFF R103 R106 AUDIO L AUDIO R 2.7K R130 R150 CLAMP SW Q103 47K 1/4W KTC3875S_Y_RTK FROM/TO CHROMA...
  • Page 25 CHROMA SCHEMATIC DIAGRAM (MAIN PCB) TO SUB POWER PCB S806X FROM/TO AV R616 VIDEO_IN2 120 1/2W V_IN[YUV] AT+5V REG R617 Q607 VIDEO_IN1 KTC3203_Y U_IN[YUV] Y_IN[YUV] VIDEO_IN3 R603 VIDEO_OUT 330 1/2W FROM/TO COMB/FILTER FROM/TO MICON C_V_OUT_SW P.CON+5V PROTECT Y_V_OUT_SW C641 VIDEO_OUT C IN(Y/C) Y SW OUT SW_Y_OUT...
  • Page 26 DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO DY V.OUTPUT IC IC401 LA78041 CP401 B06B-DVS-L_(LF) THERMAL PROTECTION V801 A68QCU870X66LRND PUMP UP 25.0 12.0 25.0 R407 L402_1 1.2K 311015011 R439 TO CRT/SVM 1K 1W CD803_1 (CP805) C425 CU83036A 0.001 BUFFER R414 R417 Q409 KTA1266 27K +-1% BUFFER...
  • Page 27 POWER SCHEMATIC DIAGRAM (MAIN PCB) D516 RELAY DRIVE Q504 10.9 1SS133 KTC3198 R515 10K 1/4W C516 RY501 500V 0.001 G5PA-1-SA(WEC) TO SOUND R517_1 D505 W806 SOUND+B 30PRA60-FC 1 3W DEGAUSS COIL R501 R541_1 L503 P.CON+12V CP502 8R270019 1 7W 0.22 1W A1561WV2-2P SOUND_GND D517...
  • Page 28 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 29 TUNER/STEREO SCHEMATIC DIAGRAM (MAIN PCB) TU001 115-V-KA35ARB FROM/TO CHROMA TUNER+5V NC NC TUNER_VIDEO W812 P.CON+8V[B] P.CON+5V FROM POWER R001 P.CON+B 100K 1/2W R002 100K 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 30 AV SCHEMATIC DIAGRAM (MAIN PCB) YUV_IN(REAR) FROM/TO CHROMA J704 MSP-213V1-652_NI_LF V_IN[YUV] U_IN[YUV] Y_IN[YUV] VIDEO_OUT VIDEO_IN2 VIDEO_IN1 VIDEO_IN3 A/V_OUT(REAR) J708 MSP-213V2-432_NI_LF C711 R708 C707 R704 R702 C728 R721 220 1/4W MUTE Q711 R703 R711 KTC3875S_Y_RTK 2.2K C710 MUTE BUFFER Q712 R710 Q709 KANP KTC3875S_Y_RTK...
  • Page 31 COMB/FILTER SCHEMATIC DIAGRAM (MAIN PCB) L1511 15uH 0305 R1512 BUFFER Q1508 KTC3875S_Y_RTK C1535 L1505 FROM AV 15uH 0305 S_VIDEO_IN[C] S_VIDEO_IN[Y] 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 32: Crt/Svm

    CRT/SVM SCHEMATIC DIAGRAM (CRT PCB) TP804 PCB110 CRT BLOCK CCD014 R828 RED AMP Q801 123.5 2.7K 1/4W R813 W821 W822 W823 KTC4217 220 1/4W D801 FROM CHROMA 1SS133 CP802B (CP802A) A2001WV2-7P RED AMP Q810 P.CON+8V W808 W820 KTC3199_Y GND(SIGNAL) D807 R.OUT G.OUT R810...

  • Page 33: Sub Power

    SUB POWER SCHEMATIC DIAGRAM (POWER PCB) FROM/TO CHROMA S806Y P.CON SW P.CON SW Q201 Q202 CP201 KTC3209_Y KTC3203_Y IMSA-6035B-03Z002-PT1 Tr_E Tr_C Tr_B C201 6.3V 1000 S805Y CAUTION: DIGITAL TRANSISTOR NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED PCB240 OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST...

  • Page 34: Waveforms

    WAVEFORMS MICON 0.5V 10ms/div 13 1V 20 s/div 1 1V 0.1 s/div 2 1V 1 s/div 14 2V 20 s/div 9 1V 50 s/div 10 2V 20 s/div 3 1V 50 s/div 15 2V 20 s/div DEFLECTION 4 1V 0.1ms/div 11 0.5V 20 s/div 16 2V 5ms/div CHROMA...
  • Page 35 WAVEFORMS 38 50V 20 s/div 25 2V 5ms/div 18 10V 10ms/div 39 50V 20 s/div 19 20V 20 s/div 26 5V 2ms/div SOUND 20 2V 20 s/div 22 2V 5ms/div 27 5V 2ms/div 23 2V 5ms/div 28 200mV 20 s/div 21 200V 50 s/div CRT/SVM 37 50V 20 s/div...

  • Page 36: Mechanical Exploded Views

    MECHANICAL EXPLODED VIEW 102C 102B 102A PCB110 (CRT PCB ASS'Y) 102B PCB060 (VM COIL PCB ASS'Y) PCB010 (MAIN PCB ASS'Y) 101F PCB240 101H (POWER PCB ASS'Y) 101I 101D 101F 101H 101J 101J 101B 101J 101E 101G 101C 101A...
  • Page 37 MECHANICAL EXPLODED VIEW (PACKING DIAGRAM) 114, 121, TM101...

  • Page 38: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description 72783030 7A701A303A FRONT CABI ASS'Y 101A 72782961 701WPJC913 CABINET,FRONT 101B 72783294 711WPAA130 PLATE,FRONT 101C 72782971 712WPBA115 DOOR 101D 72798518 713WPA0279 GLASS,LED 101E 72798569 7235490037 BADGE,BRAND 101F 72798589 735WPA0755 STOPPER,BUTTON 101G 72798573 723549A030...

  • Page 39: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS ! R410 72794683 R3X18A221J R,METAL OXIDE 220 OHM 2W ! R416 72794597 R002T22R2J 2.2 OHM 1/2W ! R420 72794597 R002T22R2J 2.2 OHM 1/2W ! R426 72794599 R4X5T4472F R,METAL 4.7K OHM 1/4W ! R434 72795116...
  • Page 40 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES ! D405 72794472 D2WTAU02A0 DIODE,SILICON AU02A-EIC ! D406 72794489 D97U05R61B DIODE,ZENER MTZJ5.6B T-77 ! D407 72794472 D2WTAU02A0 DIODE,SILICON AU02A-EIC D408 72794470 D2CF0715L0 DIODE,SILICON ERD07-15L50 D409 72794475 D2CF2016L0 DIODE,SILICON FE201-6L49 D410 72794471...
  • Page 41 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description IC1501 72797544 I03FE76605 LA76605M-TLM-E IC1502 72794502 I0UF015010 MM1501XNRE IC1503 72794502 I0UF015010 MM1501XNRE TRANSISTORS Q101 72794571 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q103 72794571 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q201 72794570 TCAT03209Y TRANSISTOR,SILICON KTC3209_Y-AT Q202 72795476 TCAT032034 TRANSISTOR,SILICON...
  • Page 42 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description COILS &TRANSFORMERS L1511 72795932 02167F150J COIL L1512 72796571 021LA6220J COIL T401 72795486 0450190161 TRANS,HORIZONTAL DRIVE ETH19Y203AY ! T501 72796703 048140065S TRANSFORMER,SWITCHING 8140065S JACKS J701 72794518 060J431020 RCA JACK MSP-213V2-432_NI_LF J702 72794517 063Q700011...
  • Page 43 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description COILS &TRANSFORMERS ! TH501 72795546 DF5EL3R0A0 DEGAUSS ELEMENT ZPB45BL3R0A TM101 72796939 076R0GW020 TRANSMITTER R25-1943 ! TU001 72795492 0163300018 RF UNIT 115-V-KA35ARB ! V801 72783267 098S270914 CRT W/DY A68QCU870X66LRND X101 72794702 100CT8R005 CRYSTAL...
  • Page 44 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...

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