Sharp SX-68JS7 SX-68JS9 Service Manual
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Sharp SX-68JS7 SX-68JS9 Service Manual

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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.
• FEATURES .......................................................... 2
• SPECIFICATIONS ...............................................2
• IMPORTANT SERVICE NOTES ......................... 3
• ADJUSTMENT PRECAUTIONS ......................... 3
• SERVICE MODE .................................................. 4
• SERVICE ADJUSTMENT ................................... 5
• TROUBLESHOOTING ........................................ 9
• WAVEFORMS ................................................... 13
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
MODELS
CONTENTS
Page
• CHASSIS LAYOUT ............................................ 14
• SCHEMATIC DIAGRAM ................................... 15
• BLOCK DIAGRAM ............................................. 26
• PARTS LIST ...................................................... 37
WARNING
SHARP CORPORATION
1
COLOUR TELEVISION
Chassis No. SP-60
SX-68JS7
SX-68JS9
SX-68JS7
SX-68JS9
S39E1SX-68JS7
Page

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Summary of Contents for Sharp SX-68JS7 SX-68JS9

  • Page 1: Table Of Contents

    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. SHARP CORPORATION...

  • Page 2: Features

    SX-68JS7 SX-68JS9...

  • Page 3: Important Service Notes

    SX-68JS7 SX-68JS9...

  • Page 4: Service Mode

    SX-68JS7 SX-68JS9...

  • Page 5: Service Adjustment

    SX-68JS7 SX-68JS9...
  • Page 6 SX-68JS7 SX-68JS9...
  • Page 7 SX-68JS7 SX-68JS9...
  • Page 8 SX-68JS7 SX-68JS9...

  • Page 9: Troubleshooting

    SX-68JS7 SX-68JS9...
  • Page 10 SX-68JS7 SX-68JS9...
  • Page 11 SX-68JS7 SX-68JS9...
  • Page 12 SX-68JS7 SX-68JS9...

  • Page 13: Waveforms

    SX-68JS7 SX-68JS9...

  • Page 14: Chassis Layout

    SX-68JS7 SX-68JS9 CHASSIS LAYOUT...

  • Page 15: Description Of Schematic Diagram

    SX-68JS7 SX-68JS9 DESCRIPTION OF SCHEMATIC DIAGRAM NOTES: SAFETY NOTES: 1. The unit of resistance "ohm" is omitted 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET (K: 1000 ohms M = Meg ohm). BEFORE REPLACING PARTS. 2. All resistors are 1/8 watt, unless otherwise noted. 2.
  • Page 16 SX-68JS7 SX-68JS9 TUNER SCHEMATIC DIAGRAM åVTUVTSR6HD64/ NOTE: The parts here shown are supplied as an assembly but not independently.
  • Page 17 SX-68JS7 SX-68JS9 IGR UNIT SCHEMATIC DIAGRAM...
  • Page 18 SX-68JS7 SX-68JS9 MAIN 1 UNIT SCHEMATIC DIAGRAM...
  • Page 19 SX-68JS7 SX-68JS9...
  • Page 20 SX-68JS7 SX-68JS9 MAIN 2 UNIT SCHEMATIC DIAGRAM...
  • Page 21 SX-68JS7 SX-68JS9...
  • Page 22 SX-68JS7 SX-68JS9 AV/DIG.-COMB UNIT SCHEMATIC DIAGRAM – RSP-Z0104PESA J5301 QTANT0010CEZZ SX-68JS9...
  • Page 23 SX-68JS7 SX-68JS9...
  • Page 24 SX-68JS7 SX-68JS9 POWER UNIT SCHEMATIC DIAGRAM...
  • Page 25 SX-68JS7 SX-68JS9...

  • Page 26: Block Diagram

    SX-68JS7 SX-68JS9 BLOCK DIAGRAM MAIN UNIT/IGR UNIT/AV/DIG.-COME UNIT BLOCK DIAGRAM...
  • Page 27 SX-68JS7 SX-68JS9 (YB) (AST OUT) (AST IN) 9 10 11 (YB) SX-68JS9...
  • Page 28 SX-68JS7 SX-68JS9 POWER UNIT/CRT UNIT BLOCK DIAGRAM...
  • Page 29 SX-68JS7 SX-68JS9...

  • Page 30: Printed Wiring Board Assemblies

    SX-68JS7 SX-68JS9 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN UNIT...
  • Page 31 SX-68JS7 SX-68JS9...
  • Page 32 SX-68JS7 SX-68JS9 PWB-B: CRT UNIT PWB-C: IGR UNIT...
  • Page 33 SX-68JS7 SX-68JS9 PWB-D: AV/DIG. COMB UNIT...
  • Page 34 SX-68JS7 SX-68JS9 PWB-E: POWER UNIT...
  • Page 35 SX-68JS7 SX-68JS9...
  • Page 36 SX-68JS7 SX-68JS9 - M E M O -...

  • Page 37: Parts List

    SX-68JS7 SX-68JS9 PARTS LIST Ref. No. Part No. Description Code Ref. No. Part No. Description Code IC1004 VHiUPC78L05-4 R UPC78L05 PARTS REPLACEMENT IC1005 VHiUPC358C/-1 R UPC358C Replacement parts which have these special safety characteristics iden- IC1601 VHiTA7348P/-1 R TA7348P tified in this manual: electrical components having such features are IC1602 VHiKA7805Pi-1 R KIA7805PI identified by "å"...
  • Page 38 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9074WEW7 D1050 RH-EX0619GEZZ R Zener, EX0619GE D1051 RH-EX0619GEZZ R Zener, EX0619GE PWB-A: MAIN UNIT (Continued) D1052 RH-EX0619GEZZ R Zener, EX0619GE D1053 VHD1SS119//1E 1SS119 D206 RH-DX0179CEZZ R DX0179CE D1054 VHD1SS119//1E 1SS119...
  • Page 39 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9074WEW7 C330 VCQYTA1HM104J R 0.1 50V Mylar C331 VCQYTA1HM222J R 2200p 50V Mylar PWB-A: MAIN UNIT (Continued) C332 VCQYTA1HM223J R 0.022 50V Mylar C333 VCQYTA1HM223J R 0.022 50V Mylar CONTROLS C334 VCQYTA1HM102J...
  • Page 40 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9074WEW7 C1011 VCEAGA1HW475M R 4.7 50V Electrolytic C1012 VCEAGA1HW105M R 1 50V Electrolytic PWB-A: MAIN UNIT (Continued) C1013 VCEAGA1CW106M R 10 16V Electrolytic C1014 VCEAGA1CW106M R 10 16V Electrolytic C440 VCKYTV1HF103Z...
  • Page 41 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9074WEW7 R305 VRS-TV1JD393J 1/16W Metal Oxide AA R306 VRS-TV1JD393J 1/16W Metal Oxide AA PWB-A: MAIN UNIT (Continued) R307 VRS-TV1JD332J 3.3k 1/16W Metal Oxide AA R308 VRS-TV1JD332J 3.3k 1/16W Metal Oxide AA C2818...
  • Page 42 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9074WEW7 R839 VRS-TV1JD153J 1/16W Metal Oxide AA R840 VRS-TV1JD183J 1/16W Metal Oxide AA PWB-A: MAIN UNIT (Continued) R841 VRS-TV1JD822J 8.2k 1/16W Metal Oxide AA R842 VRS-TV1JD561J 1/16W Metal Oxide AA R421 VRS-TV1JD273J...
  • Page 43 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R1605 VRD-RM2HD390J R 1/2W Carbon DUNTK9074WEW7 R1606 VRD-RA2BE153J R 1/8W Carbon PWB-A: MAIN UNIT (Continued) R1607 VRN-VV3DBR82J R 0.82 Metal Film R1608 VRD-RM2HD330J R 1/2W Carbon R1081 VRS-TV1JD101J 1/16W Metal Oxide AA...
  • Page 44 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9074WEW7 DIODES D850 VHD1SS119//1E 1SS119 PWB-A: MAIN UNIT (Continued) D851 VHD1SS119//1E 1SS119 D852 VHD1SS119//1E 1SS119 R1693 VRS-TV1JD103J R 10k 1/16W Metal Oxide AA D853 VHD1SS119//1E 1SS119 R1694 VRS-TV1JD223J R 22k...
  • Page 45 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK8776WEX2 SC852 QTiPM0083CEZZ R SC853 QTiPM0083CEZZ R PWB-B: CRT UNIT (Continued) SC855 QTiPM0083CEZZ R R867 VRD-RA2BE121J R 1/8W Carbon R868 VRD-RA2BE181J R 1/8W Carbon DUNTK9373WEV4 R869 VRD-RA2BE121J R 1/8W Carbon...
  • Page 46 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code Q5863 VS2SB709A//-1 2SB709A DUNTK9373WEV4 Q5864 VS2SD601A//-1 2SD601A PWB-C: IGR UNIT (Continued) DIODES RESISTORS D5309 VHD1SS119//1E 1SS119 R2300 VRS-CY1JF101J R 100 1/16W Metal Oxide AA D5310 RH-EX0649GEZZ R Zener, EX0649GE R2301 VRS-CY1JF000J...
  • Page 47 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9077WEW5 RESISTORS R5223 VRS-TV1JD221J 1/16W Metal Oxide AA PWB-D: AV/DIG.-COMB UNIT (Continued) R5225 VRS-TV1JD221J 1/16W Metal Oxide AA R5234 VRG-RF2EB100J R 1/4W C5389 VCE9GA1CW106M R 10 16V Electrolytic R5235 VRS-TV1JD561J...
  • Page 48 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTK9077WEW5 SLD5202PSLDM0218PEFW R Shield PWB-D: AV/DIG.-COMB UNIT (Continued) DUNTK9075WEW6 R5443 VRS-TV1JD101J R 100 1/16W Metal Oxide AA PWB-E: POWER UNIT R5444 VRS-TV1JD102J R 1k 1/16W Metal Oxide AA R5445 VRS-TV1JD331J R 330...
  • Page 49 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code å C704 VCFYSB2EB224K R 0.22 250V DUNTK9075WEW6 C705 VCEAVA1HN227M R 220 50V Electrolytic PWB-E: POWER UNIT (Continued) å C706 VCQYTA1HM102J R 1000p 50V Mylar å C708 RC-KZ0057CEZZ R 1500p 2KV COILS AND TRANSFORMERS...
  • Page 50 SX-68JS7 SX-68JS9 Ref. No. Part No. Description Code Ref. No. Part No. Description Code å DUNTK9075WEW6 R762 VRD-RA2BE101J R 1/8W Carbon PWB-E: POWER UNIT (Continued) MISCELLANEOUS PARTS RDA750 PRDAR0007PEZZ R Heat Sink, for Q751 R615 VRD-RM2HD102J R 1k 1/2W Carbon RDA501 PRDAR0213PEFW R Heat Sink, for IC501 R616...
  • Page 51 Front Cabinet Ass'y Not Available Front Cabinet — HDECA0043PESB SP Punching GCOVA0066PESA J Cover, R/C LED GDORF0164PESC Door HBDGB3120CESB Badge, "SHARP" HiNDP0214PEZZ J Door IND-P JBTN-0234PESB Button, Power PKAi-0002PE00 J Latche, for Door MSPRC0005PEFW R Spring, Power Button 1-10 GCOVA0076PE00...
  • Page 52 Code Ref. No. Part No. Description Code COPYRIGHT C 1999 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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