Related Manuals for Toshiba 20AF43
Summary of Contents for Toshiba 20AF43
-
Page 1: Service Manual
FILE NO. 050-200309 REVISION 1 SERVICE MANUAL COLOR TELEVISION 20AF43 DOCUMENT CREATED IN JAPAN, Mar., 2005... -
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 HOW TO ORDER PARTS ......................A1-1 IMPORTANT ..........................A1-1 TABLE OF 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 C1-1 SERVICE MODE LIST ........................ -
Page 4: General Specifications
GENERAL SPECIFICATIONS CRT Size / Visual Size 20 inch / 508mmV CRT Type Flat System Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2 Speaker Position Front Side Size 2 x 4.7 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 Menu On Screen Menu Type Icon Display 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 6 GENERAL SPECIFICATIONS Unit RC-GF G-10 Remote Glow in Dark Remocon Control 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 Auto Degauss G-11 Features 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 Switch Front Power G-13 Interface 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 When bridge-soldering between terminals and/or the INSTALLATION 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 VOL. -
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: SUB TINT/SUB COLOR Receive the color bar pattern. (RF Input) Receive the monoscope pattern. Connect the oscilloscope to TP806. 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: SUB CONTRAST 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. select "CONT.MAX".
-
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 CP804 CP803 CD852 CP852 J801 CP852B VM COIL PCB CP802B CP801B CP851B CD801 CD851 CD802 CP801A J702 CP101 J708 J704 J703 J701 FB401 TP003 VR401 W003 VR502 CP851A CP802A CD1001 SPEAKER...
-
Page 18: Block Diagram
BLOCK DIAGRAM A/V OUT J708 Q855, Q856 COMB IC Q852, Q583 Q854 Q857, Q858, Q859 CHROMA IC IC1501 LA76600M IC601 M611283FP BUFFER BUFFER VM COIL Y OUT Q610 Q613 FB401 C OUT Y IN VIDEO LINE OUT DELAYDE Y OUT SVM OFF J801 Q603, Q614, Q605... -
Page 19: Printed Circuit Boards
PRINTED CIRCUIT BORADS MAIN (INSERTED PARTS) SOLDER SIDE C427 CP101 CP801A D411 B401 J702 C426 J704 J703 J708 J701 C413_1 D405 D407 D701 D705 D704 D703 W006 D608 W134 D702 W062 W061 W850 W132 R710 W060 W131 C425 W813 W058 W819 W057 W820... - Page 20 PRINTED CIRCUIT BORADS MAIN (CHIP MOUNTED PARTS) SOLDER SIDE Q101 R109 IC199_1 R724 R101 C719 C720 R112 R113 R907 C312 C303 C102 C104 IC302 IC902 C115 C911 C301 R136 IC101 C323 R906 C917 R125 R128 Q902 IC301 R150 C106 Q901 C913 R131 Q103...
-
Page 21: Crt/Vmcoil
PRINTED CIRCUIT BORADS CRT/VM COIL SOLDER SIDE TP806 D809 W804 R808 D807 Q810 TP804 W808 D805 R804 D804 R809 R812 R806 TP805 D808 R820 W807 Q812 W007 Q811 C805 Q853 R819 R814 Q852 R859 W806 C857 Q854 D855 R872 R877 W802 Q859 Q857... -
Page 22: Micon
MICON SCHEMATIC DIAGRAM ACCESORY (MAIN PCB) BT001 R03(AB)E_20_T OS101 TM101 RPM7138-H5 BT002 R25-1911 R03(AB)E_20_T TEST POINT Vout LED SW Q101 R109 CP101 173979-7 KTC3875S_Y_RTK I2C_SCL I2C_SDA R101 I2C_OFF R103 R106 AUDIO L AUDIO R 2.7K C145 220P CH R130 R150 CLAMP SW Q103 47K 1/4W... -
Page 23: Chroma
CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO AV D610 VIDEO_IN2 SB290S 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 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) -
Page 24: Deflection
DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO DY V.OUTPUT IC IC401 LA78040 V801 CP401 THERMAL PROTECTION A51LVV896X07(O) B06B-DVS PUMP UP L402_1 ELH5L4113 25.0 12.0 25.0 R407 R439 1.2K 1K 1W C425 TO CRT/SVM 0.001 CD803 (CP803) CP83035A R414 R417 27K +-1% FROM/TO CHROMA V_OUT P.CON+5V... -
Page 25: Power
POWER SCHEMATIC DIAGRAM (MAIN PCB) D516 RELAY DRIVE Q504 10.9 1SS133 KTC3198 R515 10K 1/4W RY501 ALKS321 FROM/TO SOUND R517_1 D505 W806 SOUND+B 30DF6-FC 0.22 3W DEGAUSS COIL R501 R541 L503 P.CON+12V 8R200024 CP502 1 7W 0.22 1W A1561WV2-2P SOUND_GND D517 1SS133 CP507... - Page 26 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO 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 27: Tuner/Stereo
TUNER/STEREO SCHEMATIC DIAGRAM (MAIN PCB) TU001 115-V-K015AR FROM/TO CHROMA TUNER+5V NC NC TUNER_VIDEO W812 P.CON+8V[B] P.CON+5V FROM/TO POWER R001 P.CON+B 68K 1/2W R002 68K 1/2W FROM/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 FROM/TO SOUND L901 SW_AUDIO_L 100uH 0305... - Page 28 AV SCHEMATIC DIAGRAM YUV_IN(REAR) (MAIN PCB) J704 FROM/TO CHROMA MSP-213V1-652_PBSN V_IN[YUV] U_IN[YUV] Y_IN[YUV] 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 Q711 R703 R711 KTC3875S_Y_RTK C710 MUTE BUFFER 2.2K Q712 R710 Q709 KANP KTC3875S_Y_RTK...
-
Page 29: Comb/Filter
COMB/FILTER SCHEMATIC DIAGRAM (MAIN PCB) L1511 15uH 0305 BUFFER Q1508 KTC3875S_Y_RTK C1535 L1505 FROM/TO 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/TO MICON IC1502 MM1501XNRE Vin1 Y/C_SW V.OUT Vin2 VIDEO SW(C) IC IC1503 MM1501XNRE FROM/TO CHROMA... -
Page 30: Crt/Svm
CRT/SVM SCHEMATIC DIAGRAM (CRT PCB) CRT BLOCK TP804 PCB110 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 SVM BLOCK 1SS133 CP802B (CP802A) A2001WV2-7P RED AMP Q810 P.CON+8V W808 W820 KTC3199_Y... -
Page 31: Waveforms
WAVEFORMS MICON SOUND 100µs 1.0V 5.0V 50mV 5µs 1.0V 200mV 20µs 50µs 100mV 1.0V 50µs 20µs 1.0V 2.0V 100mV DEFRECTION 20µs 200mV 200V 5.0V NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram. - Page 32 WAVEFORMS 20µs 5.0V 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 33: Mechanical Exploded Views
MECHANICAL EXPLODED VIEW PCB110 (CRT PCB ASS'Y) PCB060 (VM COIL PCB ASS'Y) PCB010 (MAIN PCB ASS'Y) -
Page 34: Mechanical Replacement Parts List
MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AD302004 A3M701Z720 CABINET,FRONT ASSY AD302005 701WPJ1175 CABINET,FRONT AD302006 711WPA0184 PLATE,FRONT AD302007 713WPA0263 GLASS,LED AD302008 7235490036 BADGE,BRAND AD302009 735WPA0728 STOPPER,BUTTON AD302010 735WPA0732 STOPPER,BUTTON2 AD302011 735WPB0243 BUTTON,FRAME AE000002 735WPJ0235 BUTTON,POWER AE000003 800WQ00045 FELT SHEET AE000004... -
Page 35: Electrical Replacement Parts List
ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS R151 BZ210235 R00204103J 10K OHM 1/4W ! R402 BZ210021 R65582680J R,FUSE OHM 1/2W ! R410 AD301344 R3X18A151J R,METAL OXIDE 150 OHM 2W ! R416 AD301593 R002T23R3J 3.3 OHM 1/2W ! R420 AD301345 R002T22R7J... - Page 36 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES D402 BZ410043 D2WT011E10 DIODE,SILICON 11E1-EIC D403 BZ410019 D97U03001B DIODE,ZENER MTZJ30B T-77 D404 BZ410020 D97U05R11B DIODE,ZENER MTZJ5.1B T-77 ! D405 BZ410063 D2WTAU02A0 DIODE,SILICON AU02A-EIC ! D406 BZ410021 D97U05R61B DIODE,ZENER MTZJ5.6B T-77 ! D407 AD301979...
- Page 37 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description IC601 AD301984 I06FC12830 M61283FP IC701 AD301988 I0UF015010 MM1501XNRE IC702 AD301988 I0UF015010 MM1501XNRE IC902 AD300059 I01FF58290 AN5829S ! IC1001 AD300056 I0FSP52760 AN5276 IC1501 AD301029 I03FE76600 LA76600M-TLM IC1502 AD301988 I0UF015010 MM1501XNRE IC1503 AD301988 I0UF015010...
- Page 38 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description COILS &TRANSFORMERS L1503 AD301417 02167F221J COIL 220 UH L1505 AD300613 02167F150J COIL L1508 BZ310041 02167F101J COIL 100 UH L1510 AD300613 02167F150J COIL L1511 AD300613 02167F150J COIL L1512 AD301608 0216A6220J COIL AD301033 021LA6220J...
- Page 39 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description MISCELLANEOUS CP801B AD300752 069S250629 CONNECTOR PCB SIDE A2001WV2-5P CP802A AD301997 067U007029 WIRE HOLDER B2013H02-7P CP802B BZ614485 069S270629 CONNECTOR PCB SIDE A2001WV2-7P CP851A BZ614334 067U004029 WIRE HOLDER B2013H02-4P CP851B AD301998 069S240629 CONNECTOR PCB SIDE A2001WV2-4P...
- Page 40 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...