Related Manuals for Toshiba 20A45C
Summary of Contents for Toshiba 20A45C
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Page 1: Service Manual
FILE NO. 050-200519 (MFR’S VERSION A) SERVICE MANUAL COLOR TELEVISION 20A45C DOCUMENT CREATED IN JAPAN, April, 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: About Lead Free Solder (Pbf)
ABOUT LEAD FREE SOLDER (PbF) Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a PbF printing on the PCB. (Please refer to figures.) Caution: • Pb free solder has a higher melting point than standard solder; Typically the melting point is 50°F~70°F(30°C~40°C) higher. -
Page 4: Table Of Contents
TABLE OF CONTENTS SERVICING NOTICES ON CHECKING ..................A1-1 HOW TO ORDER PARTS ......................A1-1 IMPORTANT ..........................A1-1 ABOUT LEAD FREE SOLDER (PbF) ..................A1-2 TABLE OF CONTENTS ......................A2-1 A3-1~A3-5 GENERAL SPECIFICATIONS ....................DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP ....................B1-1 B2-1, B2-2 2. -
Page 5: General Specifications
GENERAL SPECIFICATIONS CRT Size / Visual Size 20 inch / 508.0mmV System CRT Type Normal Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 2 x 4.7 Inch Impedance Sound Output 2.5+2.5 W 10%(Typical) NTSC3.58+4.43 /PAL60Hz Tuning Broadcasting System System M System... - Page 6 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Character Picture Contrast Brightness Color Tint Sharpness Audio Bass Treble Balance BBE On/Off Stable Sound On/Off Surround On/Off CH Set Up TV/CABLE(CATV) Auto CH Memory Add/ Delete Lock CH Lock Video Lock Game Timer Change Password On Timer...
- Page 7 GENERAL SPECIFICATIONS G-10 Remote Unit RC-EH Control Glow in Dark Remocon Format Toshiba Remocon Format Toshiba Custom Code 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...
- Page 8 GENERAL SPECIFICATIONS G-11 Features Auto Degauss Auto Shut Off Canal+ Cable Anti-theft Rental Memory(Last CH) Memory(Last Volume) V-Chip Type -- 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...
- Page 9 Height (cm) 60 (ORION SPEC:46) 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 (by buyer) Green procurement of TOSHIBA Pb-free Phase3(Ph A3-5...
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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 Masking Tape (cotton tape) around the Flat Package... - 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.
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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 the Service Mode, press both set key and remote control key for more than 2 seconds. Remocon Key Operations Set Key Releasing of V-CHIP PASSWORD. -
Page 14: Electrical Adjustments
ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE 2. BASIC ADJUSTMENTS 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 TP401. Adjust the VR502 until the digital voltmeter is 113 ±... - Page 15 ELECTRICAL ADJUSTMENTS 2-6: VERTICAL SIZE 2-12: OSD POSITION Receive the monoscope pattern. Activate the adjustment mode display of Fig. 1-1. Using the remote control, set the brightness and contrast Press the VOL. UP/DOWN button on the remote to normal position. control until the difference of A and B becomes Activate the adjustment mode display of Fig.
- Page 16 ELECTRICAL ADJUSTMENTS 100% white 100% Fig. 2-3 2-15: TINT 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 TP024. Activate the adjustment mode display of Fig. 1-1 and press the channel button (22) on the remote control to select "TINT".
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Page 17: 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 18 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB TP024 W883 CP806 TP022 W881 J801 CP803A CP601 J701 FB401 VR402 CP401 VR401 TU001 TP401 CRT DY CP1001 SPEAKER L503 DEGAUSS COIL S501B CP802A CD501 J1001 OS101 S501A J710 J711 J712...
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Page 19: Mechanical Exploded View
MECHANICAL EXPLODED VIEW 102B 102A 102B PCB110 (CRT PCB ASS'Y) 101D 101E PCB010 (MAIN PCB ASS'Y) 101D 101E 101F 101C 101F 101B 101A... - Page 20 MECHANICAL EXPLODED VIEW (PACKING DIAGRAM) 118, 119, TM101...
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Page 21: Mechanical Replacement Parts List
MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AE007324 7A701A416A FRONT CABI ASS'Y 101A AE007325 701WPJD021 CABINET,FRONT 101B AE007326 711WPAA121 PLATE,FRONT 101C AE007327 713WPAA181 GUIDE,REMOCON 101D AE007328 735WPAA786 BUTTON,BASE 101E AE007329 735WPBB389 BUTTON,FRAME 101F AE003069 800WQ0A070 FELT SHEET AE007330 7A702A136A BACK CABI ASS'Y... -
Page 22: Electrical Replacement Parts List
ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS ! R402 BZ210003 R3K181102J R,METAL OXIDE OHM 1W ! R408 BZ210258 R4X5T6472F R,METAL 4.7K OHM 1/6W ! R424 AD301697 R4X5T6333F R,METAL 33K OHM 1/6W ! R426 AE003588 R65581010J R,FUSE OHM 1W ! R429... - Page 23 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES ! D507 BZ410043 D2WT011E10 DIODE,SILICON 11E1-EIC D508 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 ! D509 AD300671 D97U01801B DIODE,ZENER MTZJ18B T-77 ! D510 AD301980 D2CF2016L0 DIODE,SILICON FE201-6L49 D511 BZ410020 D97U05R11B DIODE,ZENER MTZJ5.1B T-77 ! D512 BZ410010...
- Page 24 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description JACKS J701 AE002759 060J431020 RCA JACK MSP-213V2-432_NI_LF J710 AE004756 060J401104 RCA JACK MTJ-032-03A-30FE J711 AE004758 060J401106 RCA JACK MTJ-032-03A-32FE J712 AE004757 060J401105 RCA JACK MTJ-032-03A-31FE ! J801 AD301356 066F130020 SOCKET,CATHODE RAY,TUBE ISHS53S ! J1001...
- Page 25 TOSHIBA CORPORATION 1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN...