Service manual

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LC-10A2U

S40Z6LC-10A2U

LCD COLOR TELEVISION

SERVICE MANUAL

MODEL

LC-10A2U

In the interests of user-safety (Required by safety regula-

tions in some countries) the set should be restored to its

original condition and only parts identical to those specified

be used.

Page

» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2

» ELECTRICAL SPECIFICATIONS ......................................................................................................... 4

» OPERATION MANUAL ......................................................................................................................... 5

» SUPPLIED ACCESSORIES ................................................................................................................. 6

» DISASSEMBLY OF THE SET ............................................................................................................... 7

» ADJUSTING PROCEDURE OF EACH SECTION ............................................................................. 10

» TROUBLE SHOOTING TABLE ........................................................................................................... 12

» CHASSIS LAYOUT ............................................................................................................................. 16

» BLOCK DIAGRAM .............................................................................................................................. 18

» DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 19

» SCHEMATIC DIAGRAM ..................................................................................................................... 20

» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 28

» PARTS LIST

ELECTRICAL PARTS..................................................................................................................... 33

MAIN UNIT ..................................................................................................................................... 33

TERMINAL UNIT ............................................................................................................................ 37

OPERATION UNIT ......................................................................................................................... 38

LED UNIT ....................................................................................................................................... 39

RELAY UNIT .................................................................................................................................. 39

ACCESSORIES PARTS ................................................................................................................. 39

PACKING PARTS ........................................................................................................................... 39

CABINET PARTS LIST................................................................................................................... 40

CABINET AND MECHANICAL PARTS.......................................................................................... 41

» PACKING OF THE SET ...................................................................................................................... 42

CONTENTS

SERVICE MANUAL LCD COLOR TELEVISION

MODEL LC-10A2U

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

SHARP CORPORATION

Summary of content (41 pages)

PAGE 1
LC-10A2U SERVICE MANUAL S40Z6LC-10A2U SERVICE MANUAL LCD COLOR TELEVISION MODEL LC-10A2U LCD COLOR TELEVISION 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 be used. CONTENTS MODEL LC-10A2U Page IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2 ELECTRICAL SPECIFICATIONS ............................
PAGE 2
LC-10A2U IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be perfomed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING • 1. For continued safety, no modification of any circuit should be attempted. 2. Disconnect AC power before servicing. • CAUTION FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE A ONLY WITH SAME TYPE FUSE. F3701 (1.6A, 125V), F3702 (1.6A, 125V), F3751 (2.5A, 125V) FUSE.
PAGE 3
LC-10A2U PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ë Ne peut effectuer la réparation qu’ un technicien spécialisé qui s’est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. • AVERTISSEMENT 1. N’entreprendre aucune modification de tout circuit. C’est dangereux. 2. Débrancher le récepteur avant toute réparation.
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LC-10A2U ELECTRICAL SPECIFICATIONS Power input ....................................................................................... DC 12V (Receiver) ....................................................................................... AC 110-240V (AC Adaptor) Power consumption .......................................................... 24W (Connected to DC 12V) LCD panel size ....................................................................................... 10.4" TFT LCD Number of pixels ........
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LC-10A2U OPERATION MANUAL Main unit (rear view) Main unit (front view) Remote control 5
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LC-10A2U SUPPLIED ACCESSORIES Operation Manual (x1) Wireless Remote Control (x1) RRMCG1559CESA TiNS-6926CEZZ Wall Mount Bracket (x1) LANGU9053CE01 Antenna Cable AC Cord QCNW-5730CEZZ QACCD3093CEZZ AC Adapter (x1) Size AAA Dry Battery (x2) Wall Mount Bracket Screws (x4) UADP-0211CEZZ UBATU0026GEZZ Fixed Screw for Set Stand (x1) 6
PAGE 7
LC-10A2U DISASSEMBLY OF THE SET 1. 2. 3. 4. Remove the five lock screws (1) off the cabinet B. Push on the six hooks (2) of the cabinet B and open it slightly. Disconnect all the connectors (3) from the terminal and operation PWBs. Detach the cabinet B. Disconnect all the connectors (4) from the main PWB.
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LC-10A2U 5. Remove the four lock screws (5) off the main PWB. 6. Peel off the five pieces of tape (6) and detach the LC display unit. 7. Remove the two lock screws (7) off the remote control PWB. 8. Remove the four lock screws (8) off the terminal PWB. 9. Remove the two lock screws (9) off the operation PWB. 10.Remove the two lock screws (10) off the flexible shield, and detach he relay PWB.
PAGE 9
LC-10A2U 11.Remove the lock screw (11) off the LC display unit. 12.Undo the seven hooks (12) to release the unit frame. 13.Detach the fluorescent lamp (13).
PAGE 10
LC-10A2U ADJUSTING PROCEDURE OF EACH SECTION The best adjustment is made before shipping. If any position deviation is found or after part replace is performed, adjust as follows. 1. Preparation for Adjustments (1)Use the exclusive-use AC adapter or stable DC power supply. AC adapter: UADP-0211CEZZ DC power supply: 12 ± 0.5V 2. Special mode setting procedure (1)After initialization of E2PROM the mode is changed to the adjustment mode. [Procedure] Connect TP2001 and TP2002 to GND, and turn on the power.
PAGE 11
LC-10A2U 3. Cancel of special mode Turn off the main unit power. 4. Adjustments Adjustment 1 +B Adjustment (If E2PROM is replaced) (IC2004) Adjusting conditions 1. Connect the DC voltmeter to pin 49 of SC401. Adjusting method 1. Adjust the "+B-Adj" value to 5.0V±0.02V with [VOL+] or [VOL-] 2. Go to the adjustment mode. Key. * The color of "+B Adj" must be yellow. 2 Model setup 1. Go to the adjustment mode. 2 1.
PAGE 12
No TV and VIDEO 1 output No 12 Check LCD panel voltage and waveform. Yes Are inputs and outputs No of IC1201 as specified? Yes Are inputs and outputs of IC802 as specified? Check IC1201 and its peripheral parts. Check IC802 and its peripheral parts. No Is input at Pin No (73) of IC802 as specified? Yes Are inputs and outputs of IC402 as specified? Check IC802, AV1 line and their peripheral parts. Check IC402 and its peripheral parts.
PAGE 13
No No No VIDEO color Check J3701, its peripheral parts and connection cable. Yes Is any of T701’s primary side, No Q701, Q710 and S4701 short-circuited? Yes Disconnect F3701 and F3702. Is the load side short-circuited? Check all the settings on the microprocessor’s adjust process menu. No TV color No color Check the secondary-side load of T701.
PAGE 14
No sound from headphone 14 Check the speakers and their peripheral parts. Yes Are inputs at Pins (5) and (8) as well as outputs at Pins (2) and (11), all of IC301, as specified? Yes Are inputs and outputs of IC303 as specified? Yes Are outputs at Pins (1) and (7) of IC903 as specified? Yes Is Pin (53) of IC2001 at “L”? No No No No Check the line in question, IC303 and its peripheral parts. Check IC303 and its peripheral parts. Check IC901, IC903 and their peripheral parts.
PAGE 15
LC-10A2U -MEMO- 15
PAGE 16
LC-10A2U CHASSIS LAYOUT MAIN Unit (Side-A) J I H G F MAIN Unit (Side-B) E D C B A 1 2 3 4 5 6 16 7 8 9 10
PAGE 17
LC-10A2U J TERMINAL Unit I H G F OPERATION Unit (Side-A) E OPERATION Unit (Side-B) D C LED Unit B A 1 2 3 4 5 6 17 7 8 9 10
PAGE 18
LC-10A2U BLOCK DIAGRAM J I H G F E D C B A 1 2 3 4 5 6 18 7 8 9 10
PAGE 19
LC-10A2U DESCRIPTION OF SCHEMATIC DIAGRAM IMPORTANT SAFETY NOTICE: PARTS MARKED WITH " å "( ) ARE INPORTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FORMAINTAINING THE SAFETY AND PERFORMANCE OF THE SET. AVIS DE SECURITE IMPORTANT: LES PIECES MARQUEES " å" ( ) SONT IMPORTANTES POUR MAINTENIR LA SECURITE DE L'APPAREIL.
PAGE 20
LC-10A2U LC-10A2U Ë MAIN Unit -1/2 å AND SHADED COMPONENTS=SAFETY RELATED PARTS J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 20-21 12 13 14 15 16 17 18 19 20
PAGE 21
LC-10A2U LC-10A2U Ë MAIN Unit -2/2 å AND SHADED COMPONENTS=SAFETY RELATED PARTS J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 22-23 12 13 14 15 16 17 18 19 20
PAGE 22
LC-10A2U LC-10A2U Ë TERMINAL Unit å AND SHADED COMPONENTS=SAFETY RELATED PARTS J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 24-25 12 13 14 15 16 17 18 19 20
PAGE 23
LC-10A2U Ë RELAY Unit J I H G F E D C B A 1 2 3 4 5 6 26 7 8 9 10
PAGE 24
LC-10A2U Ë OPERATION and LED Unit J I H G F E D C B A 1 2 3 4 5 6 27 7 8 9 10
PAGE 25
LC-10A2U PRINTED WIRING BOARD ASSEMBLIES J I H G F E D C Main Unit (Side-A) B A 1 2 3 4 5 6 28 7 8 9 10
PAGE 26
LC-10A2U Main Unit (Side-B) 10 11 12 13 14 15 29 16 17 18 19
PAGE 27
LC-10A2U J Relay Unit (Side-A) LED Unit (Side-A) I H G F E D C B Operation Unit (Side-A) A 1 2 3 4 Terminal Unit (Side-A) 5 6 30 7 8 9 10
PAGE 28
LC-10A2U J Relay Unit (Side-B) LED Unit (Side-B) I H G F E D C B Operation Unit (Side-B) A 1 2 3 4 Terminal Unit (Side-B) 5 6 31 7 8 9 10
PAGE 29
LC-10A2U -MEMO- 32
PAGE 30
LC-10A2U Ref. No. ★ LIST Description PARTS Part No. Code Ref. No. ★ Description LISTE DES PIECES Part No. Code PARTS REPLACEMENT CHANGE DES PIECES Replacement parts which have these special safety characteristics identified in this manual: electrical components having such features are identified by “ å ” and shaded area in the Replacement Parts Lists and schematic diagrams.
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LC-10A2U Ref. No. ★ Part No.
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LC-10A2U Ref. No. Part No.
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LC-10A2U Ref. No. Part No. ★ Description Code Ref. No.
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LC-10A2U Ref. No. Part No. ★ Description Code Ref. No.
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LC-10A2U Ref. No. ★ Part No. Description Code Ref. No.
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LC-10A2U Ref. No. ★ Part No. Description Code Ref. No.
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LC-10A2U Ref. No. Part No.
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LC-10A2U Part No. ★ Description Code Ref. No. CABINET AND MECHANICAL PARTS Part No. ★ Ref. No.
PAGE 39
LC-10A2U Ref. No. Part No. ★ Code No. Part No. PACKING OFRef.THE SET Description ★ Description Code ★SSAKA0160CEZZ (Operation Manual Polyethylene Bag) QCNW-5730CEZZ (Antenna Cable) TiNS-6926CEZZ (Operation Manual) Batteries (2 pcs.
PAGE 40
LC-10A2U Ref. No. Part No. ★ Description Code Ref. No. 43 Part No.
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LC-10A2U LC-10A2U Ref. No. Part No. ★ Description Code Ref. No. ★ Part No. Description Code COPYRIGHT C 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.