Instruction/ maintenance manual of the product 50A50 55A60 Toshiba
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TOSHIBA CORPORA TION 1- 1, SHIBAURA 1 - CHOME, MINATO -K U, TOKYO 105-8001, J AP A N FILE NO. 020-200012 SER VICE MANU AL PUBLISHED IN JAPAN, May., 2000 S COLOR TELEVISION N0NSP Chassis 50A60 , 50A50 .
– 2 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS T ABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTR UCTIONS .................................................................................................................................
– 3 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Many electrical and mechanical par ts in this chassis have special saf ety-related characteristics.
– 4 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS CR T ASSEMBL Y REPLA CEMENT AND MOUNTING CA UTION : DO NOT LOOSEN THE HEX HEAD BOL TS WITH SPRINGS (12 PCS), BECA USE THOSE ARE FOR SEALING OF CRT COOLANT . Lens and Neck Components View Attention Serviceman The Hex Head Bolts with Springs.
– 5 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS T O REMO VE CRT (Same procedure f or R, G, B) 1. Remov e CRT DRIVE Board, S . V . M. COIL and DEF . Y OKE from CR T . 2. Remov e Lens Assembly . 3. Detach CR T Anode Cap from CRT . 4. Remov e CRT Assemb ly from CRT Mounting.
– 6 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS W ARNING : BEFORE SER VICING THIS CHASSIS , READ THE “X-RA Y RADIA TION PRECA UTION”, “SAFETY PRE- CA UTION” AND “PR ODUCT SAFETY NO TICE” ON P AGE 3 OF THIS MANUAL.
– 7 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS LOCA TION OF SCREEN AND FOCUS VR’S SCREEN VR FOCUS VR RG B.
– 8 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS REPLA CEMENT OF THE CRT Ser vice parts are provided for each R, G and B . The contents of the par ts are as f ollows.
– 9 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS SER VICE MODE 1. ENTERING T O SER VICE MODE MUTE S (Service mode display) 3) While pressing the MUTE b utton, press MENU button on TV set. 2) Press MUTE button again to k eep pressing. 1) Press MUTE b utton once on Remote Control.
– 10 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS 7. SELF DIA GNOSTIC FUNCTION 1) Press “9” button on Remote Control during display of adjustment men u in the ser vice mode. The diagnosis will begin to check if interf ace among IC’ s are e xecuted properly .
– 11 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS ITEM ADJUSTMENT PROCEDURE Vertical retrace line SUB-BRIGHTNESS (BR TC) 1. Constrict the picture height until the vertical retrace line appears adjusting the HEIGHT control on the MAIN board. 2. Adjust the CONTRAST to the minimum and BRIGHTNESS to the center .
– 12 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS ITEM ADJUSTMENT PR OCEDURE VER TICAL LINEARITY (VLIN) 1. Call up the adjustment mode displa y , then select the item VLIN . 2. Receive cross-hatch pattern signal. 3. Press the V OLUME s or t button to obtain the picture of the best linearity .
– 13 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS CONVERGENCE ADJUSTMENT Adjust conv ergence from center to circumference in order . RCUT 40H 2. Press “7” b utton to displa y the built-in cross-hatch pattern. 1. Select the adjustment mode f ollowing the steps on page 9.
– 14 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS NO TES In many cases , color misconvergence ma y be corrected by returning HIT and WID data in main deflection side to initial adjusting values . Follo wing cases will surely require readjustment of conv ergence.
– 15 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS SCREEN AND MIRR OR ALIGNMENTS MOUNTING OF FRONT SCREEN CA UTION : Do not hold the optical system par ts (lens and mirror) with bare hand to av oid finger-prints on the surf ace of those par ts. HO W TO CLEAN LENS AND MIRR OR 1.
– 16 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS CIRCUIT CHECKS HIGH V OL T A GE CHECK CA UTION: There is no HIGH V OL T AGE ADJUSTMENT on this chassis. Checking should be done f ollowing the steps below . 1. Connect an accurate high v oltage meter to the anode of the picture tube .
– 17 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS SETTING & ADJUSTING D A T A 43", 50", 55", 61" HIGH V OL T AGE A T ZERO BEAM: (A) 31.
– 18 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS TV front LOCA TION OF CONTR OLS (Representative : 50A60) POWER VOLUME T S Behind the door MENU Video Audio inputs CHANNEL st S-VIDEO VIDEO L/MONO A.
– 19 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS CH RTN ADV/ PIP CH ADV/ PIP CH TV CABLE LIGHT MUTE TV/VIDEO TIMER RECALL POWER VCR CH VOL ENT PLAY PIP REC STILL LOCATE SWAP TV/VCR REW FF STOP SOURCE FAV FAV C.CAPT EXIT MENU RESET 1 4 7 2 5 8 3 6 9 0 100 ENTER Remote Control LIGHT TV/CABLE/VCR switch Set to “TV” to control the TV.
– 20 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS PR OGRAMMING CHANNEL MEMOR Y The channel memory is the list of TV channel numbers the TV tunes in when you press the CHANNEL s or t button. First, use the TV/CABLE and CH PROGRAM functions to preset all active channels in your area automatically.
CIRCUIT BLOCK DIAGRAM – 21 – – 22 –.
MECHANICAL DISASSEMBL Y – 23 – – 24 – 1 Speaker Grille Removal 2 Control Panel Removal 3 Front Mask Removal 5 Shield Plate, Lens Removal 6 Mirror Remo val 7 Back Boar d Remov al 8 Light Bo x R.
– 25 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS W ARNING : BEFORE SER VICING THIS CHASSIS, READ THE “X-RA Y RADIA TION PRECA UTION”, “SAFETY PRE- CA UTION” AND “PR ODUCT SAFETY NOTICE” ON P AGE 3 OF THIS MANUAL.
– 26 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description C415 24092484 CD, 1500pF, ± 10%, 2kV (50A60/55A60/61A60) C416 24828333 PF, 0.033?F, 200V C417 24679229 EL, 2.2?F, ± 20%, 250V C418 24679330 EL, 33?F, ± 20%, 250V C419 24669479 EL, 4.
– 27 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description C739 24092293 Chip, 0.1?F, +80%, -20%, 25V C740 24092293 Chip, 0.1?F, +80%, -20%, 25V C741 24794470 EL, 47?F, ± 20%, 16V C742 24794470 EL, 47?F, ± 20%, 16V C743 24092293 Chip, 0.
– 28 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description C7755 24667101 EL, 100?F, ± 20%, 25V C7765 24669479 EL, 4.7?F, ± 20%, 50V C7766 24669479 EL, 4.7?F, ± 20%, 50V C7767 24667470 EL, 47?F, ± 20%, 25V C7769 24815103 Chip, 0.
– 29 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description CV64 24206100 EL, 10?F, ± 20%, 50V CV65 24591122 PF, 1200pF CV66 24436561 CD, 560pF CV67 24591102 PF, 1000pF CV68 24206010 EL, 1?F, ± 20%, 50V CW04 24591822 PF, 8200pF CW05 24212103 CD, 0.
– 30 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description R338 24872682 Chip, 6800 ohm, 1/16W (50A60/55A60/61A60) R339 24872393 Chip, 39k.
– 31 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description R512 24872101 Chip, 100 ohm, 1/16W R514 24872122 Chip, 1200 ohm, 1/16W R515 248.
– 32 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description R818 24366471 CF, 470 ohm R819 24366102 CF, 1k ohm R820 24327153 MF, 15k ohm, .
– 33 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description R7779 24872102 Chip, 1k ohm, 1/16W R7780 24872102 Chip, 1k ohm, 1/16W R7781 248.
– 34 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description RS21 24366104 CF, 100k ohm RS22 24366104 CF, 100k ohm RS25 24366223 CF, 22k ohm.
– 35 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description RZ03 24872332 Chip, 3300 ohm, 1/16W RZ04 24872122 Chip, 1200 ohm, 1/16W RZ05 24.
– 36 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description LW04 23245834 Chip, Inductor, TRF4220CB LW05 23103859 Coil (Ferrite Bead), TEM2.
– 37 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description Q972 A6317440 Transistor, 2SC1815-Y Q973 A6317440 Transistor, 2SC1815-Y Q974 A6.
– 38 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description D661 23316570 Diode, Zener, MA8056-L, TX D701 23115537 Diode, 1SS131 D702 23115537 Diode, 1SS131 D703 23115537 Diode, 1SS131 D704 23115537 Diode, 1SS131 D705 23316675 Diode, Zener, MTZJ6.
– 39 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description KB11 23904946 Remote Sensor, RPM-676CBR-S P002 23365089 F Connector(50A50) P701.
– 40 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS Location No. Part No. Description Location No. Part No. Description ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES K912 23306263 Remot.
– 41 – – 42 – SIGNAL/CON BO ARD PB9450 BO TT OM (FOIL) SIDE.
– 43 – – 44 – DEF/PO WER BO ARD PB9451 BO TT OM (FOIL) SIDE.
– 45 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS B A CK/A V BO ARD PB9452 BO TT OM (FOIL) SIDE.
– 46 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS DIGI-CONV BO ARD PB9453 BO TT OM (FOIL) SIDE DIGI-COMB BO ARD PB9398 BO TT OM (FOIL) SIDE.
– 47 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS R-DRIVE BO ARD PB9454-1 BO TT OM (FOIL) SIDE B-DRIVE BO ARD PB9454-3 BO TT OM (FOIL) SIDE.
– 48 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS B-DRIVE BO ARD PB9454-2 BO TT OM (FOIL) SIDE FR ONT -CONT BO ARD PB9454-4 BO TT OM (FOIL) SIDE.
– 49 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS FR ONT -CONV BO ARD PB9454-5 BO TT OM (FOIL) SIDE FRONT -IN BO ARD PB9454-9 BO TT OM (FOIL) SIDE REM BO ARD PB9454-10 BO TT OM (FOIL) SIDE.
– 50 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS SVM BO ARD PB9454-6 BO TT OM (FOIL) SIDE FRONT -CON BO ARD PB9454-8 BO TT OM (FOIL) SIDE.
– 51 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS TERMINAL VIEW OF TRANSIST ORS 1 2SD2253 (old) 2SC5243 2 2SC3852 2SD1763A 2SC1569 2SC4544 2SA1788 2SA1306 2SA1186A 3 2SC752GTM 2SC2482 2SC2655 2SC47.
– 52 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS ........................................................................................................................................ .............................................................
– 53 – GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS GENERAL ADJUSTMENTS SPECIFICATIONS (Representative: 50A60) TELEVISION SYSTEM NTSC standard CHANNEL COVERAGE VHF: 2 through 13 UHF: 14 through 69 Ca.
TOSHIBA CORPORA TION 1- 1, SHIBAURA 1 - CHOME, MINATO - K U, TO KYO 105-8001, J AP A N FILE NO. 020-200012 SER VICE MANU AL PUBLISHED IN JAPAN, May., 2000 S COLOR TELEVISION N0NSP Chassis 50A60 , 50A5.
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If you already are a holder of Toshiba 50A50 55A60, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Toshiba 50A50 55A60.
However, one of the most important roles played by the user manual is to help in solving problems with Toshiba 50A50 55A60. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Toshiba 50A50 55A60 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
