Sharp 20A1-RU, Service Manual

Page 1: ... ADJUSTMENT PRECAUTIONS 3 TROUBLE SHOOTING TABLE 19 HOTEL MODE APPLICATION 21 SOLID STATE DEVICE BASE DIAGRAM 22 WAVEFORMS 23 CHASSIS LAYOUT 24 DESCRIPTION OF SCHEMATIC DIA GRAM 26 SCHEMATIC DIAGRAM CRT Unit 27 MAIN Unit 28 BLOCK DIAGRAM 34 PRINTED WIRING BOARD ASSEM BLIES 39 REPLACEMENT PARTS LIST ELECTRICAL PARTS 44 MISCELLANEOUS PARTS 48 SUPPLIED ACCESSORIES 48 PACKING PARTS 48 CABINET PARTS 49...

Page 2: ...plosion protection 2 Replace with tube of the same type number for continued safety 3 Do not lift picture tube by the neck 4 Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely X RAY This receiver is designed so that any X Ray radiation is kept to an absolute Minimum Since certain malfunctions or servicing may produce potentially hazardo...

Page 3: ...e sure the data need modify or not Initial data Note Once the chassis has been assembly together and ready to be POWER ON for the FIRST TIME make sure to short JA122 JA124 to switch to the service mode position first and then turn on the main power switch See 2 1 above Precaution If haven t done this initiation it may possibly generate excessive Beam current 3 For reference please check with memor...

Page 4: ... DEMODULATION GAIN FOR BTSC SIGNAL BTSC A A NUMBER OF EXT AV SOURCE AV FM WINDOW SEVECTION FMWS SOUND MUTE BIT 0 SM0 SOUND MUTE BIT 1 SM1 THAI LANGUAGE THA ARABIC LANGUAGE ARA MALAY LANGUAGE MAL CHINESE LANGUAGE CHI FRENCH LANGUAGE FRE RUSSIAN LANGUAGE RUS FORCED V SYNC SLICING LEVEL FSL SYNC OF OSD HP2 TUNER SELECTION CPT B B BILINGUAL BIL IF AGC SPEED BIT 0 AGC0 IF AGC SPEED BIT 1 AGC1 FOA Time ...

Page 5: ...OB AV 0 DISABLE 1 ENABLE 1 FIX NOTE FIXED DATA PLEASE DO NOT CHANGE WITHOUT SPECIFIC INSTRUCTION 1 MANUALLY CHANGE 1 TO 0 EEPROM ITEMS OSD DATA LENGTH INITIAL DATA FIX ADJ REMARK AGC TAKE OVER POINT AGC 0 63 14 ADJ VERTICAL SLOPE V LIN 0 63 32 ADJ VERTICAL AMPLITUDE V AMP 0 63 32 ADJ VERTICAL SHIFT V CENT 0 63 32 ADJ HORIZONTAL SHIFT H CENT 0 63 32 ADJ S CORRECTION S COR 0 63 0 FIX WHITE POINT RED...

Page 6: ...G 42 663 25 B G 43 679 25 B G 44 174 95 B G 45 175 55 B G ITEMS DATA SETTING LAST PROGRAM CHANNEL 1 FLASHBACK PROGARM CH 1 DIGIT 1 C SYSTEM AUTO S SYSTEM D K SKIP OFF AFC ON VOLUME 1 CONTRAST 60 MAX COLOUR 0 CENTER BRIGHTNESS 0 CENTER TINT 0 CENTER SHARPNESS 0 CENTER WHITE TEMP STANDARD REMINDER TIMER In active ON TIMER In active OFF TIMER In active LAST POWER POWER ON LANGUAGE RUSSIAN BLUE BACK M...

Page 7: ...4 1 Fig 4 2 Fig 4 3 Green only Blue only Red only Signal colour screen cleared PIF ADJUSTMENT No Adjusting point Adjusting procedure conditions Waveform and others Tuner IFT PRESET 1 1 Get the tuner ready to receive the CH E 9 signal but with no signal input Adjust the PLL data 2 Connect the sweep generator s output cable to the tuner antenna RF SWEEP 3 Adjust the sweep generator s to 80dBuV 4 Con...

Page 8: ...et BRIGHTNESS Y by generator to 10 cd m2 MINOLTA CA 100 by reducing LUMINATE Y signal 7 Adjust CUT R CUT G to get 7 500 Then go back NORMAL mode HIGH BRIGHT to check colour temperature If out of range back to 1 Note This adjustment must be done after warming up the unit for 30 minutes or longer with a beam current over 700 µ A ADJUST DRI GC GW DRI BC BW as following DATA after finishing DRI BS and...

Page 9: ...specified 1 76 Vp p 3 dB 1 VIDEO AND AUDIO INPUT CHECK 1 Using the TV AV key on the remote controller make sure that the modes change in order of TV AV1 AV2 TV again and the video audio out put are according to the input terminal for each mode 2 A V INPUT AND OUTPUT CHECKING W Y Cy G Mg R B SAME LEVEL Fig 9 HORIZONTAL AND VERTICAL DEFLECTION LOOP ADJUSTMENT No Adjusting point Adjusting procedure c...

Page 10: ...ck OSD LANGUAGE quantity and type as Eng lish and Russian 12 FUNCTION OPERATION CHECKING VIDEO AND AUDIO No Adjusting point Adjusting procedure conditions Waveform and others CONTRAST key 1 Receive Monoscope Pattern signal 2 Set P Mode to select CONTRAST 3 Press Volume Up Down key to check whether the CONTRAST effect is OK or not 1 1 Receive Color Bar signal 2 Set P Mode to select COLOUR 3 Press V...

Page 11: ... R COOL 20 00 3F 1A DRIVE G COOL 20 00 3F 1B DRIVE B COOL 20 00 3F 1C DRIVE R WARM 20 00 3F 1D DRIVE G WARM 20 00 3F 1E DRIVE B WARM 20 00 3F 1F 20 21 22 SUB VOLUME 3F 00 3F 23 SUB CONTRAST 3F 00 3F 24 SUB COLOUR 20 00 3F 25 SUB BRIGHTNESS 20 00 3F 26 SUB TINT 20 00 3F 27 SUB SHARPNESS 20 00 3F 28 HTL VOLUME 20 00 3F 29 HTL PROGRAM NUM FF 00 FF 2A 2B 2C 2D OSD RGB REFERENCE 0F 00 0F 2E CUTOFF LEVE...

Page 12: ...9 SKIP 20 SKIP 21 SKIP 22 SKIP 23 00 00 FF 65 SKIP 24 SKIP 25 SKIP 26 SKIP 27 SKIP 28 SKIP 29 SKIP 30 SKIP 31 00 00 FF 66 SKIP 32 SKIP 33 SKIP 34 SKIP 35 SKIP 36 SKIP 37 SKIP 38 SKIP 39 00 00 FF 67 SKIP 40 SKIP 41 SKIP 42 SKIP 43 SKIP 44 SKIP 45 SKIP 46 SKIP 47 00 00 FF 68 SKIP 48 SKIP 49 SKIP 50 SKIP 51 SKIP 52 SKIP 53 SKIP 54 SKIP 55 00 00 FF 69 SKIP 56 SKIP 57 SKIP 58 SKIP 59 SKIP 60 SKIP 61 SK...

Page 13: ... PART 9A S SYS AFT auto C SYS 9B TUNING FREQUANCY HIGHER PART POS 13 9C TUNING FREQUANCY LOWER PART 9D S SYS AFT auto C SYS 9E TUNING FREQUANCY HIGHER PART POS 14 9F TUNING FREQUANCY LOWER PART A0 S SYS AFT auto C SYS A1 TUNING FREQUANCY HIGHER PART POS 15 A2 TUNING FREQUANCY LOWER PART A3 S SYS AFT auto C SYS A4 TUNING FREQUANCY HIGHER PART POS 16 A5 TUNING FREQUANCY LOWER PART A6 S SYS AFT auto ...

Page 14: ...ART D9 S SYS AFT auto C SYS DA TUNING FREQUANCY HIGHER PART POS 34 DB TUNING FREQUANCY LOWER PART DC S SYS AFT auto C SYS DD TUNING FREQUANCY HIGHER PART POS 35 DE TUNING FREQUANCY LOWER PART DF S SYS AFT auto C SYS E0 TUNING FREQUANCY HIGHER PART POS 36 E1 TUNING FREQUANCY LOWER PART E2 S SYS AFT auto C SYS E3 TUNING FREQUANCY HIGHER PART POS 37 E4 TUNING FREQUANCY LOWER PART E5 S SYS AFT auto C ...

Page 15: ... TUNING FREQUANCY LOWER PART 11B S SYS AFT auto C SYS 11C TUNING FREQUANCY HIGHER PART POS 56 11D TUNING FREQUANCY LOWER PART 11E S SYS AFT auto C SYS 11F TUNING FREQUANCY HIGHER PART POS 57 120 TUNING FREQUANCY LOWER PART 121 S SYS AFT auto C SYS 122 TUNING FREQUANCY HIGHER PART POS 58 123 TUNING FREQUANCY LOWER PART 124 S SYS AFT auto C SYS 125 TUNING FREQUANCY HIGHER PART POS 59 126 TUNING FREQ...

Page 16: ...EQUANCY LOWER PART 15A S SYS AFT auto C SYS 15B TUNING FREQUANCY HIGHER PART POS 77 15C TUNING FREQUANCY LOWER PART 15D S SYS AFT auto C SYS 15E TUNING FREQUANCY HIGHER PART POS 78 15F TUNING FREQUANCY LOWER PART 160 S SYS AFT auto C SYS 161 TUNING FREQUANCY HIGHER PART POS 79 162 TUNING FREQUANCY LOWER PART 163 S SYS AFT auto C SYS 164 TUNING FREQUANCY HIGHER PART POS 80 165 TUNING FREQUANCY LOWE...

Page 17: ...18D S SYS AFT auto C SYS 18E TUNING FREQUANCY HIGHER PART POS 94 18F TUNING FREQUANCY LOWER PART 190 S SYS AFT auto C SYS 191 TUNING FREQUANCY HIGHER PART POS 95 192 TUNING FREQUANCY LOWER PART 193 S SYS AFT auto C SYS 194 TUNING FREQUANCY HIGHER PART POS 96 195 TUNING FREQUANCY LOWER PART 196 S SYS AFT auto C SYS 197 TUNING FREQUANCY HIGHER PART POS 97 198 TUNING FREQUANCY LOWER PART 199 S SYS AF...

Page 18: ...U CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA REMARK 1C0 1C1 1C2 1C3 1C4 1C5 1C6 1C7 1C8 1C9 1CA 1CB 1CC 1CD 1CE 1CF 1D0 1D1 1D2 1D3 1D4 1D5 1D6 1D7 1D8 1D9 1DA 1DB 1DC 1DD 1DE 1DF 1E0 1E1 1E2 1E3 1E4 1E5 1E6 1E7 1E8 1E9 1EA 1EB 1EC 1ED 1EE 1EF 1F0 1F1 1F2 1F3 1F4 1F5 1F6 1F7 1F8 1F9 1FA 1FB 1FC 1FD 1FE 1FF MODEL MODEL LETTER NO LETTER NO ...

Page 19: ...ightness and Sound controls CIRCUITS TO BE CHECKED Tuner PIF Automatic Gain Control 5V 32V Power Source CIRCUITS TO BE CHECKED Sound system pins 28 and 44 of IC801 Sound Detector Circuit Sound Switch and Att Control Audio Output Circuit Does signal appear at pins 6 and 8 of IC301 Check P301 connector of IC301 and peripheral circuit Check Q301 pins 4 and 6 of IC801 and peripheral circuit Does signa...

Page 20: ...Check Q872 Q887 and their adjacent circuits Check IC801 and bias control circuit NO SPECIFIC COLOUR PAL SECAM NO COLOUR SYNCHRONIZATION Check IC801 R801 R802 R803 D804 D805 D806 and Q801 Check X1001 12MHz TROUBLE SHOOTING TABLE Continued NEITHER VERTICAL NOR HORIZONTAL SYNCHRONIZATION CIRCUIT TO BE CHECKED Sync Separator Circuit NO VERTICAL SCAN Vertical linearity and size is abnormal Check pins 1...

Page 21: ...set the hotel mode it is better to choose ch 1 set s vol level Up to 75 full scale After set hotel mode starting channel will be always ch 1 maximum sound level out will be set the half of full scale If you set hotel mode in AV starting channel will be the last ch which you received before power off same as normal operation CONDITION When using hotel mode user can control contrast brightness sharp...

Page 22: ...X0386CE BASE COLLECTOR EMITTER BASE COLLECTOR EMITTER B C E KA7808 KA7805 1 2 3 ANODE RED CATHODE COMMON ANODE GREEN 1 2 3 1 3 SE115N STRF6653 STRF6654 TDA7056A PX0423CE 2SD1877 2SD2586 1 12 2R BG COLLECTOR COLLECTOR BASE EMITTER 2SC2735 2R COLLECTOR BASE EMITTER BASE EMITTER 1 8 LA7016 1 3 1 5 TA48M033 1 3 5 7 2 4 6 8 9 TDA8357 iX3368CE SIDE VIEW ...

Page 23: ...23 20A1 RU 21A1 RU 21A2 RU 23 2 23 1 WAVEFORMS ...

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Page 26: ...INE IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE WHEN SERVICING THEAREA CONNECTAN ISOLATING TRANS FORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE HAZARD OF ELECTRIC SHOCK NOTES 1 The unit of resistance ohm is omitted K 1000 ohms M Mega ohm 2 All resistors are 1 8 watt unless otherwise noted 3 All capacitors are µF unless otherwise noted P µµF VOLTAGE MEASUREMENT CONDITIONS 1 Voltages in parenth...

Page 27: ...27 20A1 RU 21A1 RU 21A2 RU 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J SCHEMATIC DIAGRAM CRT Unit MODEL 20A1 RU MODEL 21A1 RU 21A2 RU ...

Page 28: ...29 28 20A1 RU 21A1 RU 21A2 RU 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 C DIAGRAM MODEL 20A1 RU MAIN Unit ...

Page 29: ...31 30 20A1 RU 21A1 RU 21A2 RU 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 C DIAGRAM MODEL 21A1 RU MAIN Unit ...

Page 30: ...33 32 20A1 RU 21A1 RU 21A2 RU 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 C DIAGRAM MODEL 21A2 RU MAIN Unit ...

Page 31: ...35 34 20A1 RU 21A1 RU 21A2 RU 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 AGRAM 1 3 MODEL 20 21A1 RU MAIN Unit PWB A MAIN Unit ...

Page 32: ...37 36 20A1 RU 21A1 RU 21A2 RU 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 AGRAM 2 3 MODEL 21A2 RU MAIN Unit PWB A MAIN Unit ...

Page 33: ...38 20A1 RU 21A1 RU 21A2 RU 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J BLOCK DIAGRAM 3 3 CRT Unit PWB B CRT Unit ...

Page 34: ...39 20A1 RU 21A1 RU 21A2 RU 1 2 3 4 5 6 7 8 9 10 A B C D E F G H I J PRINTED WIRING BOARD ASSEMBLIES PWB B CRT Unit Wiring Side ...

Page 35: ...41 40 20A1 RU 21A1 RU 21A2 RU 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 nit Wiring Side ...

Page 36: ...43 42 20A1 RU 21A1 RU 21A2 RU 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 nit Component Side ...

Page 37: ...VS2SD601A 1 R 2SD601A AC Q752 VS2SC3198 G 1 R 2SC3198 G AA Q753 VS2SC3198 G 1 R 2SC3198 G AA Q801 VS2SB709A 1 R 2SB709A AA Q802 VS2SB709A 1 R 2SB709A AA Q1003 VS2SD601A 1 R 2SD601A AC Q1010 VS2SD601A 1 R 2SD601A AC DIODES D201 RH EX0676GEZZ R Zener Diode AA D301 RH DX0475CEZZ R Diode AB D305 RH EX0631GEZZ R Zener Diode AA D308 RH EX0631GEZZ R Zener Diode AA D310 RH DX0302CEZZ R Diode 20A1 RU 21A1 ...

Page 38: ... VCFPPD2DB564J R 0 56 200V M Polypro AF 21A1 RU 21A2 RU C614 RC KZ0039CEZZ R Capacitor AB 20A1 RU C615 VCFPVC2DB224J R 0 22 200V M Polypro AE C616 VCFPPD3CA103H R 0 01 1600V M Polypro AE 20A1 RU C616 VCFPPD3CA912H R 9100p 1600V M Polypro AE 21A1 RU 21A2 RU C617 VCKYPA2HB102K R 1000p 500V Ceramic AA C620 VCKYCY1EF104Z R 0 1 25V Ceramic AA C623 VCQYTA1HM222J R 2200p 50V Mylar AA C624 VCQYTA1HM472J R...

Page 39: ...AL392J R 3 9k 1 10W Metal Film AA R305 VRN MD2AL100J R 10 1 10W Metal Film AA R307 VRD RA2BE182J R 1 8k 1 8W Carbon AA R308 VRD RA2BE472J R 4 7k 1 8W Carbon AA R320 VRN MD2AL101J R 100 1 10W Metal Film AA C628 VCEA0A1HW224M R 0 22 50V Electrolytic AB C650 VCKYCY1EF104Z R 0 1 25V Ceramic AA C654 VCEA0A1CW476M R 47 16V Electrolytic AB C700 VCQYTA1HM103J R 0 01 50V Mylar AA å C701 RC FZ033SCEZZ R 0 0...

Page 40: ... 8W Carbon AA R1046 VRD RA2BE101J R 100 1 8W Carbon AB R1065 VRN MD2AL101J R 100 1 10W Metal Film AA R1067 VRN MD2AL000J R 0 1 10W Metal Film AA VRD RA2BE393J R 39k 1 8W Carbon AA 20A1 RU R321 VRN MD2AL561J R 560 1 10W Metal Film AA R328 VRN MD2AL564J R 560k 1 10W Metal Film AA R329 VRN MD2AL332J R 3 3k 1 10W Metal Film AA R330 VRN MD2AL101J R 100 1 10W Metal Film AA R331 VRN MD2AL102J R 1k 1 10W ...

Page 41: ...l Oxide AB R887 VRD RM2HD272J R 2 7k 1 2W Carbon AA R892 VRD RA2BE102J R 1k 1 8W Carbon AA R893 VRD RA2BE102J R 1k 1 8W Carbon AA R894 VRD RA2BE102J R 1k 1 8W Carbon AA R895 VRD RA2BE471J R 470 1 8W Carbon AA R896 VRD RA2BE471J R 470 1 8W Carbon AA R899 VRD RA2BE471J R 470 1 8W Carbon AA MISCELLANEOUS PARTS P851 QPLGN0641CEZZ R Plug 6pin H AB P882 QPLGN0541CEZZ R Plug 5pin K AB å SC882 QSOCV0931CE...

Page 42: ...1 2 HBDGB0019PESB R SHARP Badge AD 20A1 RU 21A1 RU 1 2 HBDGB0015PESB R SHARP Badge 21A2 RU AE 1 3 JBTN 0314PESA R Button Control AD 20A1 RU 21A1 RU 1 3 JBTN 0319PESA R Button Control 21A2 RU AE 1 4 GCOVA0116PESA R R C LED Cover AC 20A1 RU 21A1 RU 1 4 GCOVA0115PESA R R C LED Cover 21A2 RU AB 1 5 JBTN 0323PESA R Button Power 20A1 RU AC 1 5 JBTN 0322PESA R Button Power 21A1 RU AC 1 5 JBTN 0318PESA R ...

Page 43: ...is publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP CORPORATION AV Systems Group Quality Reliability Control Center Yaita Tochigi 329 2193 Japan DSEMPSREC TQ1028 S Nov 2000 Printed in Japan NA KY ...