Sharp 20D2-G Page 27 Service Manual Download | Manualshive

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20D2-S/G

21D1-S/G

21D2-S/G

20D2-S/G

21D1-S/G

21D2-S/G

BLOCK DIAGRAM

MAIN UNIT : 21D1-S/G

28~29

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Summary of Contents for 20D2-G

Page 1: ...sizer Tuner Ë AVL Sound Keeper Function Ë High Contrast Picture Black Stretch Circuit Ë On Timer Sleep Timer Reminder Timer Ë Blue Back Noise Mute Ë Front AV In Rear AV In Out Terminals Front Priority Ë Colour Comb Filter NTSC only Ë Headphone Terminal Ë Hotel Mode Ë Arabic Chinese English French Malay Russian 6 Languages OSD Ë White Temperature Adjustment S92Q420D2 S Page CONTENTS Page SPECIFICAT...

Page 2: ...icture tube in this receiver employs integral implosion 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 malfuncti...

Page 3: ...ake sure to short JA137 JA138 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 GA 1 Series type RH iX3368CE N6 CAUTION Make sure TV set is in Normal condition before switch to Service Mode for adjustment SERVICE MOD...

Page 4: ...SYSTEM BG S BG PLAYBACK SECAM P SECAM FE RF NTSC 3 58 F N358 FE RF NTSC 4 43 F N443 FE RF SECAM F SECAM VIDEO MUTE AT IDENT LOSS VMI VIDEO MUTE AT PROGRAM SOURCE CHANGE VMC HOTEL MODE HTL REDUCED FM DEMODULATION GAIN FOR BTSC SIGNAL BTSC A A NUMBER OF EXT AV SOURCE AV FM WINDOW SELECTION FMWS SOUND MUTE BIT 0 SM0 SOUND MUTE BIT 1 SM1 THAI LANGUAGE THA ARABIC LANGUAGE ARA MALAY LANGUAGE MAL CHINESE...

Page 5: ...S OFFSET NTSC443 SHP O4 0 15 8 FIX VERTICAL SCAN DISABLE VSD 0 DISABLE 1 ENABLE 0 FIX BLACK STRETCH BKS 0 DISABLE 1 ENABLE 1 FIX AUTOMATIC VOLUME LEVELING AVL 0 DISABLE 1 ENABLE 1 FIX FAST FILTER IF PLL FFI 0 DISABLE 1 ENABLE 0 FIX ENABLE VERTICAL GUARD RGB BLANKING EVG 0 DISABLE 1 ENABLE 1 FIX EHT TRACKING MODE HCO EHT 0 DISABLE 1 ENABLE 1 FIX OVERSCAN SWITCH OFF OSO 0 DISABLE 1 ENABLE 0 FIX AUTO...

Page 6: ...M 28 183 25 M 29 193 25 M 30 217 25 M 31 471 25 M 32 477 25 M 33 693 25 M 34 41 10 35 112 25 B G 36 168 25 B G 37 41 10 38 294 25 B G 39 463 25 B G 40 41 10 41 647 25 B G 42 663 25 B G 43 679 25 B G 44 174 95 B G 45 175 55 B G 46 41 10 99 41 10 SHIPPING SETTING CHECKING 1 The following default data has been factory set for the E 2 PROM ITEMS DATA SETTING LAST PROGRAM CHANNEL 1 FLASHBACK PROGARM CH...

Page 7: ... µ V 75 ohm open in stead of 57 1dB µ V 75 ohm open Precaution The loss of using impedance adapter 2 Fig 3 Fig 1 Fig 2 Bias box About 4 5 V Oscilloscope 0 1V TV Set Bias box TP201 E 9 CH P C 10k 100k 1n60 75ohm IF OUT 1 5 0 8dB 1000p Oscilloscope PURITY ADJUSTMENT No Adjusting point Adjusting procedure conditions Waveform and others PURITY ADJ 1 Receive the GREEN ONLY signal Adjust the beam curren...

Page 8: ...adjust until retrace line appear 6 Finally slowly decrease the screen variable re sistor until screen retrace line cut off Not Raster Note Must confirm the AKB function in set before con tinue the next adjustment 1 SUB BRIGHT NESS ADJUSMENT I 2 C BUS CONTROL 1 Call SUB BRI in service mode Receive Cross hatch pattern with 5 black level windows 2 Adjust the SUB BRIGHT bus data in order that the line...

Page 9: ...Monoscope Pattern signal 2 Press R C to set Picture NORMAL condition 3 Connect the DC miliammeter between TP603 TP602 Full Scale 3 mA Range 4 Beam current must be within 1100 100 µ A 4 6 PAL CHROMA ADJUSTMENT Continued No Adjusting point Adjusting procedure conditions Waveform and others 1 4 Using the R C call SUB COL in SERVICE mode Adjust SUB COLOUR bus data so that the 75 White Red portions of ...

Page 10: ...mode to select SHARPNESS 3 Press Volume Up Down key to check whether the SHARPNESS effect is OK or not 5 CH DISPLAY COLOUR 1 All Ch 1 99 will have an OSD display of the channel number in green colour under AFT ON condition 6 FUNCTION OPERATION CHECKING VIDEO AND AUDIO No Adjusting point Adjusting procedure conditions Waveform and others WHITE TEMP 1 Receive Monoscope Pattern signal 2 Set FUNCTION ...

Page 11: ...t B G I Check the sound out put is not working properly Select D K and check the sound output to make sure it is working prop erly 2 Receive PAL I signal press the SOUND SYS TEM to select B G D K Check the sound output is not working properly Select I and check the sound output to make sure it is working properly 3 Receive PAL B G signal press the SOUND SYSTEM to select I D K Check the sound out p...

Page 12: ...M 00 FF 46 SM1 SM0 FMWS AV BTSC HTL VMC VMI 00 FF 47 HP2 FSL RUS FRA CHN MLY ARB THA 00 FF 48 AGC1 AGC0 BIL CPT FOB AV FOA AV FOB FE FOA FE NDF MSA LED F 00 FF 00 03 49 4A 4B 4C VOLUME 01 00 3C 4D CONTRAST 3C 00 3C 4E COLOUR 1E 00 3C 4F BRIGHTNESS 1E 00 3C 50 TINT 1E 00 3C 51 SHARPNESS 1E 00 3C 52 53 54 55 POSITION AV1 AV2 01 00 FF 56 FAV POS A 0A 00 FF 57 FAV POS B 14 00 FF 58 FAV POS C 1E 00 FF ...

Page 13: ...CHASSIS CTV FINAL LAST INITIAL SETTING DATA DEFAULT RANGE WRITE CPU CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE REMARK ADDRESS DATA HEX D7 D6 D5 D4 D3 D2 D1 D0 C0 TUNING FREQUANCY LOWER PART POS 25 C1 S SYS AFT auto C SYS C2 TUNING FREQUANCY HIGHER PART POS 26 C3 TUNING FREQUANCY LOWER PART C4 S SYS AFT auto C SYS C5 TUNING FREQUANCY HIGHER PART POS 27 C6 TUNING FREQUANCY LOWER PART C7 S SYS AFT a...

Page 14: ...ASSIS CTV FINAL LAST INITIAL SETTING DATA DEFAULT RANGE WRITE CPU CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE REMARK ADDRESS DATA HEX D7 D6 D5 D4 D3 D2 D1 D0 140 TUNING FREQUANCY HIGHER PART POS 68 141 TUNING FREQUANCY LOWER PART 142 S SYS AFT auto C SYS 143 TUNING FREQUANCY HIGHER PART POS 69 144 TUNING FREQUANCY LOWER PART 145 S SYS AFT auto C SYS 146 TUNING FREQUANCY HIGHER PART POS 70 147 TUNI...

Page 15: ...S AFT auto C SYS 19A TUNING FREQUANCY HIGHER PART POS 98 19B TUNING FREQUANCY LOWER PART 19C S SYS AFT auto C SYS 19D TUNING FREQUANCY HIGHER PART POS 99 19E TUNING FREQUANCY LOWER PART 19F S SYS AFT auto C SYS 1A0 AV1 1A1 1A2 auto C SYS 1A3 AV2 1A4 1A5 auto C SYS 1A6 1A7 1A8 1A9 1AA 1AB 1AC 1AD 1AE 1AF 1B0 1B1 1B2 1B3 1B4 1B5 1B6 1B7 1B8 1B9 1BA 1BB 1BC 1BD 1BE 1BF MODEL MODEL LETTER NO LETTER NO...

Page 16: ...zontal circuit oscillate Check Q752 and IC801 D1001 Power LED Red dimly turns on or turns ON OFF Check T701 pin 11 voltage Approx 310V at 220V AC Check F701 Check Secondary Main B Approx 130V Check CRT connector K1 K5 bias Check C878 Check IC801 Checking the protector circuit Check R618 and R619 D1001 Power LED Red brightly turns on Check D751 Check R701 and R707 ...

Page 17: ...uner and related circuit Check pin 38 of IC801 Does the noise level increase at max Contrast Brightness and Sound controls CIRCUITS TO BE CHECKED Tuner PIF Automatic Gain Control 5V 32V Power Source CIRCUITS TO BE CHECKED Sound system pins 28 29 and 44 of IC801 Sound Detector Circuit Sound Switch and Att Control Audio Output Circuit Does signal appear at pins 2 and 4 of IC302 Check P302 P303 conne...

Page 18: ...icture colour is magenta The picture colour is cyan Check Q870 Q885 and their adjacent circuits 21 Check Q871 Q883 and their adjacent circuits 20 Check Q871 Q883 and their adjacent circuits 21 Check Q870 Q885 and their adjacent circuits 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 R8...

Page 19: ... Vp p H 3 3 11 Vp p H 4 3 11 Vp p H 5 84 8 Vp p H 2 3 17 Vp p H 6 80 0 Vp p H 8 3 04 Vp p V 9 2 28 Vp p H 10 126 Vp p H 7 80 Vp p H 11 8 8 Vp p H 13 146 Vp p H 14 1 1 kVp p H 15 440 Vp p 12 47 2 Vp p V 16 28 Vp p V 17 2 64 Vp p V 21D1 S G 21D2 S G ...

Page 20: ... 1 0 Vp p H 3 3 11 Vp p H 4 3 11 Vp p H 5 85 6 Vp p H 2 3 17 Vp p H 6 83 2 Vp p H 8 3 04 Vp p V 9 2 28 Vp p H 10 126 Vp p H 7 88 Vp p H 11 8 8 Vp p H 13 146 Vp p H 14 1 1 kVp p H 15 440 Vp p 12 47 2 Vp p V 16 28 Vp p V 17 2 64 Vp p V 20D2 S G ...

Page 21: ...709A 8 5 1 64 33 4 TX0110BM TX0124BM 2SC3198 2PC1815 2SC3207 DX0111PE BASE COLLECTOR EMITTER BASE COLLECTOR EMITTER B C E KA7808A 1 2 3 CATHODE ANODE RED STRG5653 AN7523 PX0013PE 2SD2586 1 9 ZR BR COLLECTOR COLLECTOR BASE EMITTER BASE EMITTER 1 3 5 2 4 9 TDA9302 IX3368CE 1 32 SIDE VIEW ...

Page 22: ...22 20D2 S G 21D1 S G 21D2 S G CHASSIS LAYOUT 20D2 S G ...

Page 23: ...23 20D2 S G 21D1 S G 21D2 S G CHASSIS LAYOUT 21D1 S G ...

Page 24: ...24 20D2 S G 21D1 S G 21D2 S G CHASSIS LAYOUT 21D2 S G ...

Page 25: ...25 20D2 S G 21D1 S G 21D2 S G BLOCK DIAGRAM CRT UNIT 20D2 S G CRT UNIT 21D1 S G 21D2 S G ...

Page 26: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G 26 27 BLOCK DIAGRAM MAIN UNIT 20D2 S G 21D2 S G ...

Page 27: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G BLOCK DIAGRAM MAIN UNIT 21D1 S G 28 29 ...

Page 28: ...30 20D2 S G 21D1 S G 21D2 S G BLOCK DIAGRAM HEADPHONE JACK UNIT ...

Page 29: ... DIRECTLY CONNECTED WITH AC MAINS VOLTAGE WHEN SERVICING THE AREA CONNECT AN ISOLATINGTRANS 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 10 watt unless otherwise noted 3 All capacitors are µF unless otherwise noted P µµF VOLTAGE MEASUREMENT CONDITIONS 1 Voltages in parenthesis...

Page 30: ...32 20D2 S G 21D1 S G 21D2 S G A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SCHEMATIC DIAGRAM CRT UNIT 20D2 S G CRT UNIT 21D1 S G 21D2 S G ...

Page 31: ...33 20D2 S G 21D1 S G 21D2 S G A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SCHEMATIC DIAGRAM HEADPHONE JACK UNIT ...

Page 32: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J 34 35 SCHEMATIC DIAGRAM MAIN UNIT 20D2 S G ...

Page 33: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J 36 37 SCHEMATIC DIAGRAM MAIN UNIT 21D1 S G ...

Page 34: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J 38 39 SCHEMATIC DIAGRAM MAIN UNIT 21D2 S G ...

Page 35: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J 40 41 PWB A MAIN UNIT Component Side PRINTED WIRING BOARD ASSEMBLIES ...

Page 36: ...20D2 S G 21D1 S G 21D2 S G 20D2 S G 21D1 S G 21D2 S G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J 42 43 PWB A MAIN UNIT Chip Parts Side ...

Page 37: ...44 20D2 S G 21D1 S G 21D2 S G A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB B CRT UNIT Componet Side PWB B CRT UNIT Chip Parts Side ...

Page 38: ...1AR AB Q352 VS2PD601AR 1Y R 2PD601AR AB Q501 VS2PC1815G 1 R 2PC1815G AC Q601 VS2SC3207 1 R 2SC3207 AC Q602 VS2SD2586 1E R 2SD2586 AM Q603 VS2PC1815G 1 R 2PC1815G AC Q751 VS2PC1815G 1 R 2PC1815G AC Q752 VS2PC1815G 1 R 2PC1815G AC Q801 VS2PB709AR 1Y R 2PB709AR AB Q802 VS2PB709AR 1Y R 2PB709AR AB Q804 VS2PD601AR 1Y R 2PD601AR AB Q1010 VS2PD601AR 1Y R 2PD601AR AB DIODES D201 RH EX0676GEZZY R Zener Dio...

Page 39: ...105M R 1 50V Electrolytic AB C604 VCEA0A2EW106M R 10 250V Electrolytic AD C605 VCKYPA2HB102K R 1000p 500V Ceramic AA C606 VCFPVC2DB474J R 0 47 200V AE Metalized Polypro Film C607 VCFPVC3ZA772H R 7700p 1800V AD Metalized Polypro Film C608 VCKYPA2HB102K R 1000p 500V Ceramic AA C610 VCEA0A1CW108M R 1000 16V Electrolytic AD C611 VCEA0A1EW476M R 47 25V Electrolytic AB C612 VCEA0A1CW477M R 470 16V Elect...

Page 40: ...AA R352 VRN MD2AL681J R 680 1 10W Metal Film AA R359 VRN MD2AL103J R 10k 1 10W Metal Film AA 20D2 S R359 VRN MD2AL102J R 1k 1 10W Metal Film AA 21D1 S G R360 VRN MD2AL103J R 10k 1 10W Metal Film AA R361 VRN MD2AL104J R 100k 1 10W Metal Film AA R364 VRN MD2AL000J R 0 1 10W Metal Film AA R366 VRN MD2AL000J R 0 1 10W Metal Film AA R431 VRN MD2AL101J R 100 1 10W Metal Film AA R432 VRN MD2AL820J R 82 1...

Page 41: ... R 220 1 10W Metal Film AA R802 VRN MD2AL221J R 220 1 10W Metal Film AA R803 VRN MD2AL221J R 220 1 10W Metal Film AA R804 VRN MD2AL221J R 220 1 10W Metal Film AA R805 VRN MD2AL822J R 8 2k 1 10W Metal Film AA R806 VRN MD2AL123J R 12k 1 10W Metal Film AA R807 VRN MD2AL103J R 10k 1 10W Metal Film AA R808 VRN MD2AL221J R 220 1 10W Metal Film AA R809 VRD RA2BE224JY R 220k 1 8W Carbon AA R812 VRN MD2AL1...

Page 42: ...J351 QJAKJ0101SEZZ R Jack 7Pin Headphone AE P351 QPLGN0461CEZZ R Plug 4Pin HP AB MISCELLANEOUS PARTS QCNW 2381PEZZ R Connecting Cord AG 20D2 S 21D2 S G QCNW 2452PEZZ R Connecting Cord AE 20D2 S G 21D2 S G QCNW A229WJZZ R Connecting Cord 20D2 S G AD QCNW A230WJZZ R Connecting Cord AD QCNW A720WJZZ R Connecting Cord 21D2 S G AD QCNW 2206PEZZ R Connecting Cord 21D1 S G AD QCNW 2379PEZZ R Connecting C...

Page 43: ... AF 1 6 MSPRC0068CEFW R PWR BTN Spring AA 2 CCABBA035WEV0 R Rear Cabinet Ass y BA 2 1 Not Available Rear Cabinet 3 VSP9050PB33WA R Speaker AK 21D2 G 1 CCABAA108WEV0 R Front Cabinet Ass y BL 1 1 Not Available Front Cabinet 1 2 HBDGB0015PESB R Badge AE 1 3 GCOVAA106WJSA R R C LED Cover AC 1 4 JBTN A028WJSB R Control Button AF 1 5 JBTN A027WJSB R Power Button AF 1 6 MSPRC0068CEFW R PWR BTN Spring AA ...

Page 44: ...1D1 S G 21D2 S G PACKING OFTHE SET SPAKCA116WJZZ 21D2 S SPAKCA153WJZZ 21D1 S SPAKCA167WJZZ 21D2 G SPAKCA195WJZZ 20D2 S SPAKCA149WJZZ 20D2 G SPAKCA221WJZZ 21D1 G SPAKXA051WJZZ 20D2 S G 21D2 S G SPAKXA077WJZZ 21D1 S G ...

Page 45: ... Yaita Tochigi 329 2193 Japan COPYRIGHT 2002 BY SHARP CORPORATION ALL RIGHTS RESERVED No part 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 D SEM P SREC TQ1402 S Sep 2002 Printed in JAPAN MY DS ...

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