Table of Contents
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(20A1-RU, 21A1-RU)
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
Ë Multi 18 Systems
Ë Full Auto Channel Preset and Auto Channel Skip
Ë 100-CH Program Memory
Ë High Contrast Picture
Ë Black Stretch Circuit
Ë CATV (Hyper Band) Ready < Used Frequency Synthesizer
Tuner>
» SPECIFICATIONS .............................. 2
» IMPORTANT SERVICE NOTES ......... 2
» ADJUSTMENT PRECAUTIONS ......... 3
» TROUBLE SHOOTING TABLE ......... 19
» HOTEL MODE APPLICATION .......... 21
DIAGRAM ......................................... 22
» WAVEFORMS ................................... 23
» CHASSIS LAYOUT ........................... 24
GRAM ............................................... 26
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power
receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user - serviceable
parts inside. Refer servicing to qualified service personnel.
SERVICE MANUAL
(21A2-RU)
FEATURE
Ë AVL (Sound Keeper) Function
Ë Hotel Mode
Ë On Timer / Sleep Timer / Reminder Timer
Ë Colour Comb Filter Function (NTSC only)
Ë Blue Back Noise Mute
Ë Rear AV-In/Out Terminals and Front AV-In
Ë English and Russian OSD
CONTENTS
Page
» BLOCK DIAGRAM ............................ 34
» REPLACEMENT PARTS LIST
WARNING
SHARP CORPORATION
1
COLOUR TELEVISION
Chassis No. UA-1
21A1-RU
21A2-RU
MODELS
CRT Unit ....................................... 27
MAIN Unit ..................................... 28
BLIES ................................................ 39
ELECTRICAL PARTS ................... 44
MISCELLANEOUS PARTS ........... 48
SUPPLIED ACCESSORIES ......... 48
PACKING PARTS ......................... 48
CABINET PARTS .......................... 49
20A1-RU
21A1-RU
21A2-RU
SX0M220A1-RU/
Page
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Table of Contents
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Summary of Contents for Sharp 20A1-RU
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Page 1: Table Of Contents
SX0M220A1-RU/ COLOUR TELEVISION Chassis No. UA-1 20A1-RU 21A1-RU (20A1-RU, 21A1-RU) (21A2-RU) 21A2-RU MODELS In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used. -
Page 2: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 3: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 4: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 5: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 6: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 7: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 8: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
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20A1-RU 21A1-RU 21A2-RU... -
Page 10: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 11: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU MEMORY MAP DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE REMARK SETTING DATA 00-FF PASS WORD 00-FF PASS WORD 00-FF PASS WORD 00-FF... -
Page 12: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA SETTING DATA 00-0F SHARPNESS-OFFSET (SECAM) 00-0F SHARPNESS-OFFSET (N358) 00-0F SHARPNESS-OFFSET (N433) 00-FF 00-FF N443 N358 PB-SEC... -
Page 13: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA TUNING FREQUANCY (HIGHER PART) POS 4 TUNING FREQUANCY (LOWER PART) S-SYS (auto) -
Page 14: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA TUNING FREQUANCY (LOWER PART) POS 25 S-SYS (auto) C-SYS TUNING FREQUANCY (HIGHER PART) -
Page 15: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA POS 46 TUNING FREQUANCY (HIGHER PART) POS 47 TUNING FREQUANCY (LOWER PART) -
Page 16: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA TUNING FREQUANCY (HIGHER PART) POS 68 TUNING FREQUANCY (LOWER PART) S-SYS (auto) -
Page 17: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA POS 89 TUNING FREQUANCY (HIGHER PART) POS 90 TUNING FREQUANCY (LOWER PART) -
Page 18: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU DATA ADDRESS MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INITIAL (HEX) DEFAULT RANGE REMARK WRITE(CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA MODEL MODEL LETTER NO. LETTER NO. -
Page 19: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... - Page 20 20A1-RU 21A1-RU 21A2-RU...
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Page 21: 20A1-Ru
20A1-RU 21A1-RU 21A2-RU... -
Page 22: Solid State Device Base Diagram
20A1-RU 21A1-RU 21A2-RU SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR COLLECTOR :BG: BASE EMITTER BASE EMITTER BASE EMITTER M24C04W B709A FX0008GE D601A 2SC2735 iX3368CE SIDE VIEW BASE 1 2 3 COLLECTOR BASE EMITTER COLLECTOR SE115N EMITTER PST573J DX0386CE... -
Page 23: Waveforms
20A1-RU 21A1-RU 21A2-RU WAVEFORMS... -
Page 26: Description Of Schematic Diagram
20A1-RU 21A1-RU 21A2-RU DESCRIPTION OF SCHEMATIC DIAGRAM SAFETY NOTES: NOTES: 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE 1. The unit of resistance "ohm" is omitted. (K = 1000 ohms, M = Mega ohm). REPLACING PARTS. 2. All resistors are 1/8 watt, unless otherwise noted. -
Page 27: Schematic Diagram Crt Unit
20A1-RU 21A1-RU 21A2-RU SCHEMATIC DIAGRAM: CRT Unit (MODEL 20A1-RU) (MODEL 21A1-RU/21A2-RU) -
Page 28: Main Unit
20A1-RU 20A1-RU 21A1-RU 21A1-RU 21A2-RU 21A2-RU SCHEMATIC DIAGRAM: MODEL 20A1-RU MAIN Unit... - Page 29 20A1-RU 20A1-RU 21A1-RU 21A1-RU 21A2-RU 21A2-RU SCHEMATIC DIAGRAM: MODEL 21A1-RU MAIN Unit...
- Page 30 20A1-RU 20A1-RU 21A1-RU 21A1-RU 21A2-RU 21A2-RU SCHEMATIC DIAGRAM: MODEL 21A2-RU MAIN Unit...
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Page 31: Block Diagram
20A1-RU 20A1-RU 21A1-RU 21A1-RU 21A2-RU 21A2-RU BLOCK DIAGRAM - 1/3:MODEL 20/21A1-RU MAIN Unit PWB-A: MAIN Unit... - Page 32 20A1-RU 20A1-RU 21A1-RU 21A1-RU 21A2-RU 21A2-RU BLOCK DIAGRAM - 2/3:MODEL 21A2-RU MAIN Unit PWB-A: MAIN Unit...
- Page 33 20A1-RU 21A1-RU 21A2-RU BLOCK DIAGRAM - 3/3:CRT Unit PWB-B: CRT Unit...
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Page 34: Printed Wiring Board Assemblies
20A1-RU 21A1-RU 21A2-RU PRINTED WIRING BOARD ASSEMBLIES PWB-B: CRT Unit (Wiring Side) - Page 35 20A1-RU 20A1-RU 21A1-RU 21A1-RU 21A2-RU 21A2-RU PWB-A: MAIN Unit (Wiring Side)
- Page 36 20A1-RU 20A1-RU 21A1-RU 21A1-RU 21A2-RU 21A2-RU PWB-A: MAIN Unit (Component Side)
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Page 37: Parts List
(NOT REPLACEMENT ITEM) D515 RH-EX0903CEZZ R Zener Diode D602 RH-DX0475CEZZ R Diode D603 RH-DX0131CEZZ R Diode PWB-A DUNTK9988WEX5 - Main Unit (20A1-RU) — D604 RH-DX0475CEZZ R Diode PWB-A DUNTK9988WEW7 - Main Unit (21A1-RU) — D605 RH-EX0840CEZZ R Zener Diode PWB-A DUNTK9988WEX0 - Main Unit (21A2-RU) —... - Page 38 20A1-RU 21A1-RU 21A2-RU Ref. No. Part No. Description Code Ref. No. Part No. Description Code D710 RH-EX0601GEZZ R Zener Diode C215 VCEA0A1CW476M R 47 Electrolytic D711 VHD1SS82///1A R 1SS82 C216 VCKYCY1HB821K R 820p 50V Ceramic D713 RH-EX0621GEZZ R Zener Diode...
- Page 39 20A1-RU 21A1-RU 21A2-RU Ref. No. Part No. Description Code Ref. No. Part No. Description Code C628 VCEA0A1HW224M R 0.22 Electrolytic RJ25 VRN-MD2AL000J 1/10W Metal Film C650 VCKYCY1EF104Z R 0.1 Ceramic RJ26 VRN-MD2AL000J 1/10W Metal Film C654 VCEA0A1CW476M R 47 Electrolytic...
- Page 40 20A1-RU 21A1-RU 21A2-RU Ref. No. Part No. Description Code Ref. No. Part No. Description Code R321 VRN-MD2AL561J R 560 1/10W Metal Film R709 VRD-RA2BE681J R 680 1/8W Carbon R328 VRN-MD2AL564J R 560k 1/10W Metal Film R710 VRN-VV3ABR39J R 0.39 1W...
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Page 41: Miscellaneous Parts
> NOT REPLACEMENT ITEM D884 VHD1SS82///1A R 1SS82 D885 VHD1SS82///1A R 1SS82 D886 VHD1SS82///1A R 1SS82 SPAKC6605PEZZ - packing case (20A1-RU) — D887 VHD1SS82///1A R 1SS82 SPAKC6598PEZZ - packing case (21A1-RU) — D888 VHD1SS82///1A R 1SS82 SPAKC6601PEZZ - packing case (21A2-RU) —... -
Page 42: Cabinet Parts
CABINET PARTS CCABA2549WEV0 R Front Cabinet Ass’y (20A1-RU) CCABA2526WEV0 R Front Cabinet Ass’y (21A1-RU) CCABA2530WEV0 R Front Cabinet Ass’y (21A2-RU) Not Available - Front Cabinet (20A1-RU) — Not Available - Front Cabinet (21A1-RU) — Not Available - Front Cabinet (21A2-RU) —... - Page 43 Code Ref. No. Part No. Description Code COPYRIGHT © 2000 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.