Toshiba Solid State Service Manual

Text of Toshiba Solid State User Guide:

• Toshiba Solid State, SERVICE MANUAL 25"/29"/34"/38" SOLID STATE Color Television Receiver This manual is the latest at the time of printing, and does not include the modification which may be made after the printing, by the constant improvment of product. Checked by : ________________________________________________________ Document : ___________ (NTSC-M MTS STEREO) TOSHIBA I C IC Approved by : ___________Date ___________SM - 74PM ( WU GUO XIAN) 2 25-01-2002 TB1253AN +TMP88PS38N

• CONTENTS 1. SPECIFICATION..................................... 2. BLOCK DIAGRAM.................................. 3. ALIGMENT INSTRUCTION....................... 4. VOLTAGE TABLE................................... 5. IC601 DATA........................................... 6. TROUBLE SHOOTING............................. This manual is the latest

• TV SPECIFICATION ART-TECH PROJECT ENGINEERING LTD SUPPLY VOLTAGE: AC110-220V +10% 60Hz 1. SYSTEM NTSC-M NORMAL - TV CATV 2. CHANNEL L-VHF 2 - 6 (A-8) A - 5 ~ B CH H-VHF 7 - 13

• Toshiba Solid State, 26. RASTER DISTORTION 27. REMOTE CONTROL DISTANCE ANGLE 28. POWER CONSUMPTION (AT MAX. CONDITION) POWER CONSUMPTION (AT MAX. CONDITION) 29. CONVERGENCE DISLOCATION AT AREA A AREA B STANDARD UNIT 30. VIDEO INPUT LEVEL : 1.0Vp-p + 3dB. VIDEO OUTPUT LEVEL: 1.0Vp-p + 3dB. 31. AUDIO INPUT LEVEL : 0.5VRms + 3dB. AUDIO OUTPUT LEVEL: 0.5VRms + 3dB. < 5 > 5 > +15 < 120 < 1

• Toshiba Solid State, SIF/H Corr in IF Vcc (5V) VCO Adj Filter AUDIO OUT AFT out IF IN IF IN IF AGC RF AGC X¡¦tal(3.58MHz) APC Filter CW OUT YC Vcc(5V) R OUT G OUT B OUT YC GND SVM OUT YS/YM in Ext R in Ext G in Ext B in RGB Vcc(9V) SCL SDA EHT in IK in ABCL in 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 IC 101 TB 1253AN TL B1L B2L OUTS MAD OUTL LDL VIL EOL CAV VREF LIL AVL SOL LDL TW TS CW CS VEO VEI CNR CM CD GND SDA IC 001 TDA9855 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 TR B1R B2R SW n.c OUTR LDR VIR COR PS1 PS2 LIR AVR SOR LOR CSS CMO CER C

• SM-74PM P.6 RinS1 IC801 TA1219AN 1 2 3 4 5 6 7 8 9 10 11 Det in Det Select Lin TV Rin TV Vin TV Lin V1 Rin V1 Vin V1 LinS1 Y/VinS1 LoutTV RoutTV Vout1 Lout1 R OUT1 C OUT VCC Cin RinV2 Yin 12 13 14 15 16 17 18 29 28 27 26 25 24 23 22 21 20 19 CinS1 LinS1 Y/VinS2 RinS2 CinS2 I/O1 I/O2 Y OUT 36 35 34 33 32 31 30 LinV2 VinV2 Address Sync out SDA SCL GND IC802 TC94A45P 1 2 3 4 5 6 7 8 16 15

• Toshiba Solid State, 1. Never disconnect any leads while receiver is in operation. 2. Disconnect all power before attempting any repairs. 3. Do not short any portion of the circuit while power is on. 4. For safety reasons, all parts replaced should be identical, ( for parts and part numbers see parts list ). 5. Before alignment the set must be pre-heated for 30 minutes or more and erase magnetism thoroughly from CRT

• Toshiba Solid State, VII. VERTICAL S-CORRECTION ADJUSTMENT 1. Receive Cross hatch Pattern 2. Select VSC item adjust value to normal,regular picture. VIII. VERTICAL CENTER ADJUSTMENT NTSC (60Hz) Adjustment (1). Receive Monscope Pattern (60Hz). (2). Select VP60 item adjust value to obtain the picture at center. IX. HORIZONTAL PHASE ADJUSTMENT NTSC(60Hz) (1).Receive Mono Scope Pattern (60Hz). (2).Adjust HPOS item value to obtain regular Picture.The picture position.(see table XXIII) X.EAST-WEST CORRECTION (1)Receive Mono Scope Pa

• Toshiba Solid State, XV. BTSC INPUT LEVEL ALIGNMENT 1. Receive a Colour Bar Pattern (set to 100% modulation at 300Hz mono). 2. Connect oscilloscope to monitor IC001 (TPL or TPR ). 3. Adjust BTSC INPUT to obtain amplitude1.4V P-P +5%. XVI. BTSC STEREO/SAP AUTOMATIC ALIGNMENT 1. Connect the 10uF/16V Capacitors from IC001 EIL,EIR TO GND. 2. Receive PHILIPS 5418 TD Colour Bar Pattern (Set BTSC STEREO/SAP TEST 1.L=300Hz and R=3.1KHz 14% Modulation). 3. Into FACTORY SERVICE mode press REMOVE CONTROL Enter Factory mode,Press S.MPX to start automatic alignment. SM-74

• Toshiba Solid State, XXII. HIGH POT TESTING 1. Short the L- pole and N- pole of AC line cord. 2. Switch on the power Switch of the TV set. 3. Connect the High Pot Tester ( - ) to L and N Pole, ( + ) to the METAL PART of CABINET. CONDITION TEST STANDARN TEST STANDARD SAFETY STD. FOR PRODUCTION VDE.SAA 3.0KV 10mA / 1 MIN >3.5KV&l

• Toshiba Solid State, VOLTAGE TABLE FOR IC ( ONLY FOR REFERENCE ) IC 101 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 2.98 5 3.9 NC 2.6 1.7 6.7 2.8 4.2 3.3 3 6.8 5 2.6 2.6 2.6 GND NC 0.6 2.2 2.2 2.2 8.7 4.2 4.2 3.5 GND 5.4 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 5.6 3.2 1 0 4.7 1.8 7 9 4.1 4.6 GND NC 1.7 2.3 2.4 2.5 2.2 2.1 2.6 2.2 3.5 4 3.7 2.4 8.7 2.4 4.2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 IC 601 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 4.2 4.2 4.2 4.2 NC 4.2 4 4.2 4.2 5.5 4.2 4.2 4.2 4 NC 4 4

• VOLTAGE TABLE FOR IC ( ONLY FOR REFERENCE ) 1 2 3 4 5 6 7 8 IC 602 1 2 3 4 5 297 GND 0 0.7 1.2 IC 901 NOTE: VOLTAGE ARE TAKEN UNDER TUNED CONDITION WITH CONTRAST BRIGHTNESS COLOR SIGNAL INPUT CHANNEL SETTING SIGNAL PATTERN : Maximum Position : Maximum Position : Maximum Position : 70dB + 10dB : The

• Toshiba Solid State, VOLTAGE TABLE FOR TRANSISTOR (ONLY FOR REFERENCE) SYMBOL B (V) C (V) E (V) SYMBOL B (V) C (V) E (V) Q001 Q003 Q004 Q005 Q101 Q102 Q104 Q105 Q106 Q107 Q108 Q109 Q110 Q111 Q202 Q203 Q204 Q205 Q401 Q402 Q403 Q404 Q405 Q501 Q603 Q605 Q606 Q607 Q608 Q609 Q610 Q801 Q802 Q803 Q804 Q805 Q806 Q807 Q901 Q902 Q903 0.7 4 3.3 3.24 3.9 1.7 3.3 7.6 67.9 0 GND 67.6 16.4 68 3 4 8.5 68.7 GND NOTE: VOLTAGE ARE TAKEN UNDER TUNED CONDITION WITH CONTRAST BRIGHTNESS COLOR SIGNAL INPUT CHANNE

• Toshiba Solid State, SYMBOL ITEM PRESET DATA 25”~38” DATA BTSC INPUT BTSC ALI1 BTSC ALI2 BTSC ALI3 CCD OSD CCD OSDF OSDF OSD OPT 12 50 75 00 00 00 24 00 0C 06 17 17 6C 6F 80 57 1B 17 REMARK 1. PRESET DATA is IC602 original Data . 2. 25 38 has been adjusted Data. 3. Adjustable Data (different data in different TV set). 4. Adjustable Data (only by Engineer approved). 5. NON-Adjustable Data. SM-74PM P.14 SYMBOL ITEM PRESET DATA 25”~38” DATA RCUT GCUT BCUT GDRV BDRV CNTX BRTC COLC TNTC SCOL SCNT CNTC CNTN BRTX BRTN COLX COLN TNTX TNTN ST3 SV3 SHPX SHPN TXCX RGCN ABL DCBS CLTM CLVO CLVD HPOS HIT VP60 VLIN VSC 28 28 2D 37 2D 7F 2D 44 36 10 08 3F

• Toshiba Solid State, Trouble Shooting 1. No power Check the voltage between + and - of C914 Check the PIN 1 of IC901 Check the PIN 9 of IC901 Check the voltage between + and - of C991 1) Check F901 IF F901 is broken, replace it after checking this BR901 Check T901 Check Q901. ZD901. IC901 Check FB904. D906 YES YES YES NO NO NO NO SM-74PM.P15

• Toshiba Solid State, 2.No Raster Heater Voltage is OK but No Raster Increase Screen Voltage by turn right screen volume Appear Raster (with Vertical retrace line) Readjust screen Voltage Check the voltage at pin 14.15.16 of IC 101 check the voltage between + and - C407 check T402 check D403 check Q501. 502. Q503 check IC 101 Yes Yes No No No SM-74PM.P16 Yes

• Toshiba Solid State, 3.Vertical Line(Reference Line) START Check voltage at IC401 PIN6 26V Check IC 401 PIN5(V- WAVE) Check the waveform IC 401 PIN2(V-OUT) Check DY CONNECTOR CheckC408. D402.R405 Check IC101 PIN38 Check IC401 PIN4 (3.84V) Check IC 401 YES YES NO NO NO SM-74PM.P17

• Toshiba Solid State, SM-74PM.P18 4.No Sound(Picture OK) START Check voltage at IC201 PIN9 20V Check the IC201 PIN2,5 AUDIO SIGNAL Check R211. Q204.Q205 R213.D911.C924.C218 Check IC301 PIN6.47 YES YES NO NO Check the speaker PIN +. - Check R. L speaker wire Check the R. L speaker Check IC201,C207 Check the IC 201 of PIN4(20V) NO NO YES YES

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