Sharp 20U200 Page 22 Service Manual Download | Manualshive

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20U200, 20U250

51U200, 51U250

51U500, 51U550

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MODELS 20U200/250, 51U200/250 CHASSIS LAYOUT

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Summary of Contents for 20U200

Page 1: ...TATE DEVICE BASE DIAGRAM 21 CHASSIS LAYOUT 22 BLOCK DIAGRAM 24 WAVEFORMS 30 DESCRIPTION OF SCHEMATIC DIAGRAM 31 SCHEMATIC DIAGRAM Ë MAIN UNIT 20U200 250 32 Ë MAIN UNIT 51U200 250 34 Ë MAIN UNIT 51U500 550 36 Page Ë CRT UNIT 38 Ë HEADPHONE UNIT 39 Ë NICAM UNIT 40 PRINTED WIRING BOARD ASSEMBLIES 41 REPLACEMENT PARTS LIST Ë ELECTRICAL PARTS MAIN UNIT 46 CRT UNIT 51 HEADPHONE UNIT 51 NICAM IGR UNIT 51...

Page 2: ...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 hazardous radiation with prolonged exposure at close range the following precautions should be observed 1 20U200 250 When repairing the circuit...

Page 3: ...ot Initial data Note Once the chassis has been assembly together and ready to be POWER ON for the FIRST TIME make sure to short circuit JA122 and 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 memory map UA1 Series typ...

Page 4: ...J GAIN_N FM OUTPUT LEVEL FM_LV IGR OUTPUT LEVEL IGR_LV NICAM OUTPUT LEVEL B G BG_NLV NICAM OUTPUT LEVEL I I_NLV NICAM OUTPUT LEVEL D K DK_NLV NICAM LOWER ERR LIMIT LOW ERR NICAM UPPER ERR LIMIT UP_ERR IGR STR R CH GAIN ADJ IGR_STR MISC OPTION MODE SOUND SYSTEM M S M SOUND SYSTEM DK S DK SOUND SYSTEM I S I SOUND SYSTEM BG S BG PLAYBACK SECAM P SECAM FE RF NTSC 3 58 F N358 FE RF NTSC 4 43 F N443 FE ...

Page 5: ...TION UPPER COR U 0 63 32 FIX NO EFFECT CORRECTION LOWER COR L 0 63 32 FIX NO EFFECT TRAPEZIUM TRAPE 0 63 32 FIX NO EFFECT HORIZONTAL BOW HB 0 63 32 FIX NO EFFECT S CORRECTION S COR 0 63 0 FIX WHITE POINT RED STD WHITE TEMP DRI RS 0 63 32 FIX WHITE POINT GREEN STD WHITE TEMP DRI GS 0 63 32 ADJ WHITE POINT BLUE STD WHITE TEMP DRI BS 0 63 32 ADJ WHITE POINT RED COOL WHITE TEMP DRI RC 0 63 25 FIX WHIT...

Page 6: ... I 0 DISABLE 1 ENABLE 1 FIX 3 SOUND SYSTEM BG S BG 0 DISABLE 1 ENABLE 1 FIX PLAYBACK SECAM P SECAM 0 DISABLE 1 ENABLE 1 FIX 3 FE RF NTSC 3 58 F N358 0 DISABLE 1 ENABLE 0 FIX FE RF NTSC 4 43 F N443 0 DISABLE 1 ENABLE 1 FIX 3 FE RF SECAM F SECAM 0 DISABLE 1 ENABLE 1 FIX 3 VIDEO MUTE AT IDENT LOSS VMI 0 DISABLE 1 ENABLE 1 FIX VIDEO MUTE AT PROGRAM SOURCE CHANGE VMC 0 DISABLE 1 ENABLE 1 FIX HOTEL MODE...

Page 7: ...aximum voltage 4 Change the antenna input signal to 63 67dBµV and make sure there is no noise 5 Turn up the input signal to 90 95 dBµV to be sure that there is no cross modulation beat Note For the 50 ohm signal strength gauge when not using 50 75 impedance adapter signal strength is 52 1 dBµV 75 ohm open instead of 57 1 dBµV 75 ohm open For the 50 ohm signal strength gauge Precaution The loss of ...

Page 8: ... R B G R RGB BGR Lacquer Wedge a Wedge b Wedge c About 100 About 100 4 pole magnet 6 pole magnet CRT neck 20mm Lacquer Purity magnet CONVERGENCE ADJUSTMENT NO Adjustment part Adjusting procedure and conditions Waveform and others 1 CONVERGENC ADJ To be done after the purity adjustment 1 Receive the Crosshatch Pattern signal 2 Using the remote controller call NORMAL mode Static Convergence 1 Turn t...

Page 9: ...cd m2 High 120 cd m2 Refer to Page 7 12 300 K X 0 272 Y 0 275 MINOLTA COLOUR ANALYZER CA 100 Note Above Data can be UP DOWN by Volume key 4 Maximum beam check 1 Receive the Monoscope Pattern signal 2 Press R C to set Picture NORMAL condition 3 Connect the DC miliammeter between TP603 and TP602 Full Scale 3 mA Range 4 Beam current must be within 1 100 100 µA 1 V 3 0Vdc 0 1 2 3 4 5 Fig 7 HORIZONTAL ...

Page 10: ...a 10k ohm im pedance Make sure the output is as specified 1 76 Vp p 3 dB 2 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 output are according to the input terminal for each mode 3 Other Protectors 1 Once finish rectified Electrolytic Capacitor short testing in B line check all possible ...

Page 11: ...U to select WHITE TEMP 3 Press Volume Up Down key to check WHITE TEMP Option STANDARD NORMAL SETTING WARM for more REDDISH direction changing COOL for more BLUISH direction changing FUNCTION OPERATION CHECKING VIDEO AND AUDIO Continued NO Adjustment part Adjusting procedure and conditions Waveform and others 9 COLOUR SYSTEM 1 Receive the PAL COLOUR BAR signal press the COLOUR SYSTEM key to select ...

Page 12: ...RAM 20 00 3F 0D EW PARABOLA WIDTH 20 00 3F 0E EW UPPER CORNER 20 00 3F 0F EW LOWER CORNER 20 00 3F 10 EW TRAPEZIUM 20 00 3F 11 HORIZONTAL BOW 20 00 3F 12 S CORRECTION 00 00 3F 13 14 15 16 DRIVE R STANDARD 20 00 3F 17 DRIVE G STANDARD 20 00 3F 18 DRIVE B STANDARD 20 00 3F 19 DRIVE R WARM 20 00 3F 1A DRIVE G WARM 20 00 3F 1B DRIVE B WARM 20 00 3F 1C DRIVE R COOL 19 00 3F 1D DRIVE G COOL 20 00 3F 1E ...

Page 13: ...M 41 NICAM 42 NICAM 43 NICAM 44 NICAM 45 NICAM 46 NICAM 47 FF 00 FF B7 NICAM 48 NICAM 49 NICAM 50 NICAM 51 NICAM 52 NICAM 53 NICAM 54 NICAM 55 FF 00 FF B8 NICAM 56 NICAM 57 NICAM 58 NICAM 59 NICAM 60 NICAM 61 NICAM 62 NICAM 63 FF 00 FF B9 NICAM 64 NICAM 65 NICAM 66 NICAM 67 NICAM 68 NICAM 69 NICAM 70 NICAM 71 FF 00 FF BA NICAM 72 NICAM 73 NICAM 74 NICAM 75 NICAM 76 NICAM 77 NICAM 78 NICAM 79 FF 00...

Page 14: ...IGR_ST 79 FF 00 FF CA IGR_ST 80 IGR_ST 81 IGR_ST 82 IGR_ST 83 IGR_ST 84 IGR_ST 85 IGR_ST 86 IGR_ST 87 FF 00 FF CB IGR_ST 88 IGR_ST 89 IGR_ST 90 IGR_ST 91 IGR_ST 92 IGR_ST 93 IGR_ST 94 IGR_ST 95 FF 00 FF CC IGR_ST 96 IGR_ST 97 IGR_ST 98 IGR_ST 99 FF 00 FF CD CE CF IGR_MA 0 IGR_MA 1 IGR_MA 2 IGR_MA 3 IGR_MA 4 IGR_MA 5 IGR_MA 6 IGR_MA 7 FF 00 FF D0 IGR_MA 8 IGR_MA 9 IGR_MA 10 IGR_MA11 IGR_MA 12 IGR_M...

Page 15: ... INTIAL HEX D7 D6 D5 D4 D3 D2 D1 D0 DEFAULT RANGE WRITE CPU CHECK DATA CHECKTYPE CHECK DATA CHECKTYPE SETTING DATA REMARK 180 TUNING FREQUANCY HIGHER PART POS 34 181 TUNING FREQUANCY LOWER PART 182 S SYS AFT auto C SYS 10 183 TUNING FREQUANCY HIGHER PART POS 35 184 TUNING FREQUANCY LOWER PART 185 S SYS AFT auto C SYS 10 186 TUNING FREQUANCY HIGHER PART POS 36 187 TUNING FREQUANCY LOWER PART 188 S ...

Page 16: ...T INTIAL HEX D7 D6 D5 D4 D3 D2 D1 D0 DEFAULT RANGE WRITE CPU CHECK DATA CHECKTYPE CHECK DATA CHECK TYPE SETTING DATA REMARK 1C0 TUNING FREQUANCY LOWER PART POS 55 1C1 S SYS AFT auto C SYS 10 1C2 TUNING FREQUANCY HIGHER PART POS 56 1C3 TUNING FREQUANCY LOWER PART 1C4 S SYS AFT auto C SYS 10 1C5 TUNING FREQUANCY HIGHER PART POS 57 1C6 TUNING FREQUANCY LOWER PART 1C7 S SYS AFT auto C SYS 10 1C8 TUNIN...

Page 17: ...77 278 279 27A 27B 27C 27D 27E 27F MODEL MODEL LETTER NO LETTER NO ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL HEX D7 D6 D5 D4 D3 D2 D1 D0 DEFAULT RANGE WRITE CPU CHECK DATA CHECKTYPE CHECK DATA CHECKTYPE SETTING DATA REMARK 280 281 282 283 284 285 286 287 288 289 28A 28B 28C 28D 28E 28F 290 291 292 293 294 295 296 297 298 299 29A 29B 29C 29D 29E 29F 2A0 2A1 2A2 2A3 2A4 2A5 2A6 ...

Page 18: ...l mode starting channel will be always ch 1 maximum sound level out will be set to 75 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 end user can ONLY control PICTURE SOUND and FEATURE selection But It will return to the previous hotel mode setting condition after power off ...

Page 19: ...oltage LB must be approx 5V BT must be approx 32V and CH preset data check Check the tuner AGC TP201 Does noise or signal appear at pin 38 of IC801 Check IC801 and its related circuit Check Q203 IC401 and related circuit Check PIF circuit and its related circuit Check pin 27 of IC801 Tuner and related circuit Does the noise level increase at max Contrast Brightness and Sound controls CIRCUITS TO B...

Page 20: ... Vertical linearity and size abnormal TROUBLE SHOOTING TABLE Continued NO SPECIFIC COLOUR Is some colour produced in B W broadcast reception Is the white balance properly adjusted Readjust the white balance The picture colour is yellow The picture colour is magenta The picture colour is cyan Check Q871 Q883 and its adjacent circuits Check Q870 Q885 and its adjacent circuits Check Q872 Q887 and its...

Page 21: ...15 2SC2482 PST573J DX0386CE BASE COLLECTOR EMITTER BASE COLLECTOR EMITTER B C E KA7808 KA7805 1 2 3 ANODE RED CATHODE COMMON ANODE GREEN 1 2 3 2SC4517 B C E DX0445CE SE115N STRF6654 PX0423CE 2SD2586 2R BG COLLECTOR COLLECTOR BASE EMITTER 2SC2735 JC COLLECTOR BASE EMITTER BASE EMITTER 1 3 TA48M033 1 3 5 2 4 9 TDA8357 AN5276 1 12 TF321S B C E SOLID STATE DEVICE BASE DIAGRAM TOP VIEW SIDE VIEW ...

Page 22: ...22 20U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H MODELS 20U200 250 51U200 250 CHASSIS LAYOUT ...

Page 23: ...23 20U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H MODELS 51U500 550 CHASSIS LAYOUT ...

Page 24: ...25 20U200 20U250 51U200 51U250 51U500 51U550 24 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MODELS 20U200 250 51U200 250 BLOCK DIAGRAM 1 ...

Page 25: ...27 20U200 20U250 51U200 51U250 51U500 51U550 26 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MODELS 51U500 550 BLOCK DIAGRAM ...

Page 26: ...28 20U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM 2 ...

Page 27: ...29 20U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM 3 NICAM IGR ...

Page 28: ...p H 21 5 80 0 Vp p H 6 89 4 Vp p H 20 87 2 Vp p H 21 7 3 10 Vp p H 20 3 11 Vp p H 21 8 1 85 Vp p H 20 1 93 Vp p H 21 9 129 0 Vp p H 20 133 0 Vp p H 21 0 8 38 Vp p H 20 8 48 Vp p H 21 q 1 08 Vp p H 20 1 17 Vp p H 21 w 0 83 Vp p H 20 0 91 Vp p H 21 e 46 6 Vp p H 20 48 0 Vp p H 21 r 130 0 Vp p H 20 130 5 Vp p H 21 t 952 Vp p H 20 980 Vp p H 21 y 2 7 Vp p H 20 2 6 Vp p H 21 u 504 Vp p H 20 510 Vp p H ...

Page 29: ...S DIRECTLY CONNECTED WITH AC MAINS VOLTAGE WHEN SERVICING THE AREA CONNECT AN 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 Meg ohm 2 All resistors are 1 16 watt unless otherwise noted 3 All capacitors are µF unless therwise noted P µµF VOLTAGE MEASUREMENT CONDITIONS 1 Voltage in parenthesis ...

Page 30: ...33 20U200 20U250 51U200 51U250 51U500 51U550 32 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MODELS 20U200 250 SCHEMATIC DIAGRAM MAIN Unit ...

Page 31: ...35 20U200 20U250 51U200 51U250 51U500 51U550 34 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MODELS 51U200 250 SCHEMATIC DIAGRAM MAIN Unit ...

Page 32: ...37 20U200 20U250 51U200 51U250 51U500 51U550 36 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MODELS 51U500 550 SCHEMATIC DIAGRAM MAIN Unit ...

Page 33: ...38 20U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit Ë 20U200 250 Ë 51U200 250 500 550 ...

Page 34: ...39 20U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM HEADPHONE Unit ...

Page 35: ...40 20U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H MODELS 51U500 550 SCHEMATIC DIAGRAM NICAM Unit ...

Page 36: ...U200 20U250 51U200 51U250 51U500 51U550 6 5 4 3 2 1 A B C D E F G H PRINTED WIRING BOARD ASSEMBLIES PWB B CRT Unit Wiring Side Component Side PWB E NICAM Unit Wiring Side Chip Parts Side PWB C HEADPHONE Unit ...

Page 37: ...43 20U200 20U250 51U200 51U250 51U500 51U550 42 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Component Side ...

Page 38: ...45 20U200 20U250 51U200 51U250 51U500 51U550 44 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Chip Parts Side ...

Page 39: ...1A AC Q751 VS2SA1015G 1E R 2SA1015G AC Q752 VS2SC1815GW 1 R 2SC1815GW AB Q753 VS2SC1815GW 1 R 2SC1815GW AB 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 VHD1SS119 1 R Diode AB D302 RH EX0615GEZZ R Zener Diode AA D303 RH EX0615GEZZ R Zener Diode AA D304 RH EX0631GEZZ R Zener D...

Page 40: ...g 10µH AB L1050 VP DF100K0000 R Peaking 10µH AB L1051 VP DF100K0000 R Peaking 10µH AB SF201 RFiLC0442CEZZ R SAW Filter AL TRANSFORMERS å T601 RTRNZ0026PEZZ J Transformer AH å T602 RTRNF0194PEZZ J H Volt Transformer BA å T701 RTRNZ0188PEZZ J Transformer AT CAPACITORS C200 VCEA0A1CW476M R 47 16V Electrolytic AB C203 VCKYCY1HF103Z R 0 01 50V Ceramic AA C204 VCEA0A1CW107M R 100 16V Electrolytic AC C20...

Page 41: ...04Z R 0 1 25V Ceramic AA C654 VCEA0A1CW476M R 47 16V Electrolytic AB C700 VCQYTA2AA103K R 0 01 100V Mylar AC å C701 RC FZ031SCEZZ R 0 1 AC250V Film AD C702 RC KZ0160GEZZ R 0 01 250V Ceramic AC C703 RC KZ0160GEZZ R 0 01 250V Ceramic AC C704 VCKYPA2HB102K R 1000p 500V Ceramic AA C705 VCKYPA2HB102K R 1000p 500V Ceramic AA C707 RC EZ0804CEZZ R 220 400V Electrolytic AU C708 RC KZ0160GEZZ R 0 01 250V Ce...

Page 42: ... 7k 1 16W Metal Oxide AA R238 VRS CY1JF821J R 820 1 16W Metal Oxide AA R239 VRS CY1JF221J R 220 1 16W Metal Oxide AA R300 VRS CY1JF680J R 68 1 16W Metal Oxide AA R306 VRS CY1JF123J R 12k 1 16W Metal Oxide AA R307 VRD RA2BE272J R 2 7k 1 8W Carbon AA R308 VRD RA2BE332J R 3 3k 1 8W Carbon AA R309 VRS CY1JF272J R 2 7k 1 16W Metal Oxide AA R310 VRD RA2BE103J R 10k 1 8W Carbon AA R311 VRS CY1JF332J R 3 ...

Page 43: ...etal Oxide AA R806 VRD RA2BE123J R 12k 1 8W Carbon AA R807 VRS CY1JF103J R 10k 1 16W Metal Oxide AA R808 VRS CY1JF221J R 220 1 16W Metal Oxide AA R809 VRD RA2BE224J R 220k 1 8W Carbon AA R811 VRS CY1JF563J R 56k 1 16W Metal Oxide AA R812 VRS CY1JF101J R 100 1 16W Metal Oxide AA R813 VRS CY1JF101J R 100 1 16W Metal Oxide AA R1001 VRD RA2BE221J R 220 1 8W Carbon AA R1002 VRS CY1JF331J R 330 1 16W Me...

Page 44: ...D RM2HD272J R 2 7k 1 2W Carbon AA R884 VRS VV3DB153J R 15k 2W Metal Oxide AA PWB A DUNTK9988WEA2 Z8 Z9 MAIN UNIT Continued R885 VRD RM2HD272J R 2 7k 1 2W Carbon AA R886 VRS VV3DB153J R 15k 2W Metal Oxide AA R887 VRD RM2HD272J R 2 7k 1 2W Carbon AA R892 VRD RA2BE102J R 1 0k 1 8W Carbon AA R893 VRD RA2BE102J R 1 0k 1 8W Carbon AA R894 VRD RA2BE102J R 1 0k 1 8W Carbon AA R895 VRD RA2BE471J R 470 1 8W...

Page 45: ... R2309 VRS CY1JF822J R 8 2k 1 16W Metal Oxide AA R2311 VRS CY1JF102J R 1 0k 1 16W Metal Oxide AA R2313 VRD RA2BE101J R 100 1 8W Carbon AB R2314 VRD RA2BE101J R 100 1 8W Carbon AB R2316 VRS CY1JF222J R 2 2k 1 16W Metal Oxide AA R2318 VRS CY1JF222J R 2 2k 1 16W Metal Oxide AA R2340 VRS CY1JF223J R 22k 1 16W Metal Oxide AA R2341 VRS CY1JF181J R 180 1 16W Metal Oxide AA R2342 VRS CY1JF183J R 18k 1 16W...

Page 46: ...M SPAKC0063KMZZ Packing Case 20U200 SPAKC0064KMZZ Packing Case 20U250 SPAKC0065KMZZ Packing Case 51U200 SPAKC0066KMZZ Packing Case 51U250 SPAKC0067KMZZ Packing Case 51U500 SPAKC0068KMZZ Packing Case 51U550 SPAKP0697CEZZ Wrapping Paper SPAKX0017KMZZ Packing Foam SSAKA0031PEZZ Polyethylene Bag CABINET PARTS 1 CCABA0055WEC0 Front Cabinet Ass y 20U200 1 CCABA0056WEC0 Front Cabinet Ass y 20U250 1 CCABA...

Page 47: ...rt of this 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 D SEM P SYI TQ0979 S Sep 2000 Printed in Japan NA KG ...

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