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Sharp 20D2-S Service Manual

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20D2-S/G
21D2-S/G
In the interests of user-safety (Required by safety regulations in some countries) the set should be re-
stored 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 CATV(Hyper Band) Ready
<Used Frequency Synthesizer 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
» SPECIFICATIONS ............................................. 2
» IMPORTANT SERVICE NOTES ........................ 2
» ADJUSTMENT PRECAUTIONS ........................ 3
» MEMORY MAP ................................................ 12
» GA1 HOTEL MODE APPLICATION ................ 16
» TROUBLE SHOOTING TABLE ....................... 16
» WAVEFORMS .................................................. 19
» CHASSIS LAYOUT .......................................... 22
» BLOCK DIAGRAM ........................................... 25
Ë CRT UNIT ..................................................... 32
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
21D1-S/G
MODELS
FEATURES
Ë Front AV-In & Rear AV-In/Out Terminals
Ë Colour Comb Filter(NTSC only)
Ë Headphone Terminal
Ë Hotel Mode
Ë Arabic/Chinese/English/French/Malay/Russian
Ë White Temperature Adjustment
CONTENTS
Page
WARNING
SHARP CORPORATION
1
COLOUR TELEVISION
Chassis No. GA-1
20D2-S/G
21D1-S/G
21D2-S/G
(Front Priority)
6 Languages OSD
Ë HEADPHONE JACK UNIT ........................... 33
Ë MAIN UNIT ................................................... 34
Ë ELECTRICAL PARTS
MAIN UNIT ................................................... 45
CRT UNIT ..................................................... 48
HEAD PHONE JACK UNIT .......................... 49
Ë SUPPLIED ACCESSORIES ........................ 49
Ë PACKING PARTS ......................................... 49
Ë CABINET PARTS ......................................... 50
» PACKING OF THE SET ................................... 51
20D2-S/G
21D1-S/G
21D2-S/G
S92Q420D2-S//
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Summary of Contents for Sharp 20D2-S

  • Page 1: Table Of Contents

    20D2-S/G 21D1-S/G 21D2-S/G SERVICE MANUAL S92Q420D2-S// COLOUR TELEVISION Chassis No. GA-1 20D2-S/G 21D1-S/G 20D2-S/G 21D1-S/G 21D2-S/G MODELS 21D2-S/G In the interests of user-safety (Required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identical to those specified should be used.
  • Page 2 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 3 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 4 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 5 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 6 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 7 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 8 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 9 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 10 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 11 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 12 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 13 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 14 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 15 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 16 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 17 20D2-S/G 21D1-S/G 21D2-S/G...
  • Page 18 20D2-S/G 21D1-S/G 21D2-S/G...

  • Page 19: Waveforms

    20D2-S/G 21D1-S/G 21D2-S/G WAVEFORMS (21D1-S/G, 21D2-S/G) 1) 1.0 Vp-p (H) 2) 3.17 Vp-p (H) 3) 3.11 Vp-p (H) 4) 3.11 Vp-p (H) 5) 84.8 Vp-p (H) 6) 80.0 Vp-p (H) 7) 80 Vp-p (H) 8) 3.04 Vp-p (V) 9) 2.28 Vp-p (H) 10) 126 Vp-p (H) 11) 8.8 Vp-p (H)
  • Page 20 20D2-S/G 21D1-S/G 21D2-S/G WAVEFORMS (20D2-S/G) 1) 1.0 Vp-p (H) 2) 3.17 Vp-p (H) 3) 3.11 Vp-p (H) 4) 3.11 Vp-p (H) 5) 85.6 Vp-p (H) 6) 83.2 Vp-p (H) 7) 88 Vp-p (H) 8) 3.04 Vp-p (V) 9) 2.28 Vp-p (H) 10) 126 Vp-p (H) 11) 8.8 Vp-p (H)

  • Page 21: Solid State Device Base Diagram

    20D2-S/G 21D1-S/G 21D2-S/G SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR :BR: BASE EMITTER BASE EMITTER M24C04 B709A D601A IX3368CE SIDE VIEW BASE COLLECTOR BASE EMITTER COLLECTOR EMITTER TX0110BM DX0111PE TX0124BM 2PC1815 2SC3198 2SC3207 CATHODE ANODE (RED) 1 2 3...

  • Page 22: Chassis Layout

    20D2-S/G 21D1-S/G 21D2-S/G CHASSIS LAYOUT 20D2-S/G...
  • Page 23 20D2-S/G 21D1-S/G 21D2-S/G CHASSIS LAYOUT 21D1-S/G...
  • Page 24 20D2-S/G 21D1-S/G 21D2-S/G CHASSIS LAYOUT 21D2-S/G...

  • Page 25: Block Diagram

    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 20D2-S/G 21D1-S/G 21D1-S/G 21D2-S/G 21D2-S/G BLOCK DIAGRAM MAIN UNIT : 20D2-S/G, 21D2-S/G 26~27...
  • Page 27 20D2-S/G 20D2-S/G 21D1-S/G 21D1-S/G 21D2-S/G 21D2-S/G BLOCK DIAGRAM MAIN UNIT : 21D1-S/G 28~29...
  • Page 28 20D2-S/G 21D1-S/G 21D2-S/G BLOCK DIAGRAM HEADPHONE JACK UNIT...

  • Page 29: Description Of Schematic Diagram

    20D2-S/G 21D1-S/G 21D2-S/G DESCRIPTION OF SCHEMATIC DIAGRAM NOTES: SAFETY NOTES: 1. The unit of resistance "ohm" is omitted. 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS. (K = 1000 ohms, M = Mega ohm). 2. All resistors are 1/10 watt, unless otherwise noted.

  • Page 30: Schematic Diagram

    20D2-S/G 21D1-S/G 21D2-S/G SCHEMATIC DIAGRAM CRT UNIT : 20D2-S/G CRT UNIT : 21D1-S/G, 21D2-S/G...
  • Page 31 20D2-S/G 21D1-S/G 21D2-S/G SCHEMATIC DIAGRAM HEADPHONE JACK UNIT...

  • Page 32: Ë Main Unit

    20D2-S/G 20D2-S/G 21D1-S/G 21D1-S/G 21D2-S/G 21D2-S/G SCHEMATIC DIAGRAM MAIN UNIT : 20D2-S/G 34~35...
  • Page 33 20D2-S/G 20D2-S/G 21D1-S/G 21D1-S/G 21D2-S/G 21D2-S/G SCHEMATIC DIAGRAM MAIN UNIT : 21D1-S/G 36~37...
  • Page 34 20D2-S/G 20D2-S/G 21D1-S/G 21D1-S/G 21D2-S/G 21D2-S/G SCHEMATIC DIAGRAM MAIN UNIT : 21D2-S/G 38~39...

  • Page 35: Printed Wiring Board Assemblies

    20D2-S/G 20D2-S/G 21D1-S/G 21D1-S/G 21D2-S/G 21D2-S/G PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN UNIT (Component Side) 40~41...
  • Page 36 20D2-S/G 20D2-S/G 21D1-S/G 21D1-S/G 21D2-S/G 21D2-S/G PWB-A: MAIN UNIT (Chip Parts Side) 42~43...
  • Page 37 20D2-S/G 21D1-S/G 21D2-S/G PWB-B: CRT UNIT (Componet Side) PWB-B: CRT UNIT (Chip Parts Side)

  • Page 38: Replacement Parts List

    RH-EX0616GEZZY R Zener Diode 5.6V D755 RH-EX0603GEZZY R Zener Diode DUNTKA541WEG1 - Main Unit (21D2-S/G) — D801 RH-DX0048GEZZY R DX0048GE DUNTKA541WEG2 - Main Unit (20D2-S/G) — D802 RH-DX0045GEZZY R DX0045GE DUNTKA541WEG4 - Main Unit (21D1-S/G) — D803 RH-DX0045GEZZY R DX0045GE DUNTKA542WEC6 - CRT Unit —...
  • Page 39 20D2-S/G 21D1-S/G 21D2-S/G Ref. No. Part No. Description Code Ref. No. Part No. Description Code FILTERS C603 VCEA0A1HW105M+ R 1 50V Electrolytic C604 VCEA0A2EW106M R 10 250V Electrolytic CF251 RFiLC0318CEZZ R Filter, FiLC0318CE C605 VCKYPA2HB102K+ R 1000p 500V Ceramic CF252...
  • Page 40 VRD-RA2BE222JY R 2.2k 1/8W Carbon RJ21 VRN-MD2AL000J 1/10W Metal Film (20D2-S) RJ24 VRN-MD2AL000J 1/10W Metal Film R501 VRD-RA2BE562JY R 5.6k 1/8W Carbon (20D2-S/G, 21D2-S/G) (21D1-S/G, 21D2-S/G) RJ26 VRN-MD2AL000J 1/10W Metal Film R502 VRD-RM2HD102JY R 1k 1/2W Carbon RJ28 VRN-MD2AL000J 1/10W Metal Film...

  • Page 41: Crt Unit

    R1001 VRN-MD2AL221J R 220 1/10W Metal Film RDA302 PRDAR0340PEFW R Heat Sink for IC302 R1002 VRN-MD2AL331J R 330 1/10W Metal Film (20D2-S/G, 21D2-S/G) R1003 VRN-MD2AL471J R 470 1/10W Metal Film RDA302 PRDAR0341PEFW R Heat Sink for IC302 R1004 VRN-MD2AL821J R 820 1/10W Metal Film...

  • Page 42: Headphone Jack Unit

    QCNW-2452PEZZ R Connecting Cord R895 VRN-MD2AL471J R 470 1/10W Metal Film (20D2-S/G, 21D2-S/G) (21D1-S/G, 21D2-S/G) QCNW-A229WJZZ R Connecting Cord (20D2-S/G) AD R896 VRN-MD2AL471J R 470 1/10W Metal Film QCNW-A230WJZZ R Connecting Cord (21D1-S/G, 21D2-S/G) QCNW-A720WJZZ R Connecting Cord (21D2-S/G) AD...

  • Page 43: Ë Cabinet Parts

    20D2-S/G 21D1-S/G 21D2-S/G Ref. No. Part No. Description Code Ref. No. Part No. Description Code CABINET PARTS 20D2-S/G 20D2-S CCABAA084WEV0 R Front Cabinet Ass’y Not Available - Front Cabinet — HBDGB0015PESB R Badge GCOVAA106WJSA R R/C LED Cover JBTN-A028WJSA R Control Button...

  • Page 44: Packing Of The Set

    20D2-S/G 21D1-S/G 21D2-S/G PACKING OF THE SET SPAKXA051WJZZ (20D2-S/G, 21D2-S/G) SPAKXA077WJZZ (21D1-S/G) SPAKCA116WJZZ (21D2-S) SPAKCA153WJZZ (21D1-S) SPAKCA167WJZZ (21D2-G) SPAKCA195WJZZ (20D2-S) SPAKCA149WJZZ (20D2-G) SPAKCA221WJZZ (21D1-G)
  • Page 45 Part No. Description Code © 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.

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