Service manual

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LC-15A2U

S60B6LC-15A2U

LCD COLOR TELEVISION

SERVICE MANUAL

MODEL

LC-15A2U

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

» OUTLINE DIMENSION FIGURE .......................................................................................................... 7

» DISASSEMBLY OF THE SET ............................................................................................................... 8

» ADJUSTING PROCEDURE OF EACH SECTION ............................................................................... 9

» TROUBLE SHOOTING TABLE ........................................................................................................... 11

» CHASSIS LAYOUT ............................................................................................................................. 14

» BLOCK DIAGRAM .............................................................................................................................. 16

» DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 18

» SCHEMATIC DIAGRAM ..................................................................................................................... 19

» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 26

» PARTS LIST

ELECTRICAL PARTS..................................................................................................................... 31

MAIN UNIT ..................................................................................................................................... 31

TERMINAL UNIT ............................................................................................................................ 36

SWITCH UNIT ................................................................................................................................ 37

R/C UNIT ........................................................................................................................................ 37

ACCESSORIES PARTS ................................................................................................................. 37

PACKING PARTS ........................................................................................................................... 37

CABINET PARTS LIST................................................................................................................... 38

CABINET AND MECHANICAL PARTS.......................................................................................... 39

» PACKING OF THE SET ...................................................................................................................... 40

CONTENTS

SERVICE MANUAL LCD COLOR TELEVISION

MODEL LC-15A2U

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 (40 pages)

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LC-15A2U SERVICE MANUAL S60B6LC-15A2U SERVICE MANUAL LCD COLOR TELEVISION MODEL LC-15A2U 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-15A2U Page IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2 ELECTRICAL SPECIFICATIONS ............................
PAGE 2
LC-15A2U 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.
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LC-15A2U 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-15A2U ELECTRICAL SPECIFICATIONS Power input ....................................................................................... DC 12V (Receiver) ....................................................................................... AC 110-240V (AC Adapter) Power consumption ......................................................... 27 W (Connected to DC 12V) LCD panel size .......................................................................................... 15" TFT LCD Number of pixels .......
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LC-15A2U OPERATION MANUAL Main unit (rear view) Main unit (front view) Rear control panel To change the angle of the TV set, tilt the screen 10 degrees forward or 20 degrees backward. it can also be rotated 90 degrees. Please adjust the angle so that the TV set can be watched most comfortably. cover into the rear of the TV set completely.
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LC-15A2U SUPPLIED ACCESSORIES Wireless Remote Control (×1) LC-15A2U FRANÇAIS ENGLISH Operation Manual (×1) LCD COLOR TELEVISION TÉLÉVISION COULEUR À ÉCRAN À CRISTAUX LIQUIDES (LCD) OPERATION MANUAL MODE D’EMPLOI Printed on post-consumer recycled paper. Imprimé sur du papier recyclé. PRINTED IN JAPAN IMPRIMÉ AU JAPON TINS-6961CEZZ 0C.
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LC-15A2U OUTLINE DIMENSION FIGURE 1-3/4 (45.3) 1-3/16 (30.3) 1/16 (1.5) 9-3/32 (231.1) 12-3/32 (310.6) 3/64 (1.5) 13-3/8 (341.4) 5-7/16 (138.7) 14-1/8 (359.0) 14-1/16 (357.0) 12-3/32 (307.4) ø 8-1/16 (205.0) 1/2 (12) 1/2 1/2 1/2 1/2 (12) (12) (12) (12) 4-1/2 (114.5) 1-13/16 (46.4) 1-31/28 (26.0) 2-5/32 (66.0) 1/8 (3.0) 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 9/16 1/2 9/16 (14.0) (14.0) (14.0) (14.0) (14.0) (14.0) (14.0) (14.0) (14.0) (13.0) (14.0) 1/8 (3.0) 1/32 (4.5) 1-3/8 (35.
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LC-15A2U DISASSEMBLY OF THE SET 1. Insert your finger into the center of the terminal cover and pull it toward you to detach the terminal cover. 2. Remove the four screws 1 and one screw 2. 3. Open the cabinet B by approx. 45˚ from the bottom of the cabinet (stand side). 4. Remove the lead wire from the cable clamp 3. 5. Remove the power connector 4. 6. Remove the connector 5 from the light reception unit. 7. Remove the lead wire from the cable clamp 6. 8. Remove the speaker connector 7. 9.
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LC-15A2U 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-0212CEZZ 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.
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LC-15A2U 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.
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No TV and VIDEO 1 output No 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.
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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 13
No sound from rear speakers No sound from headphone 13 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.
PAGE 14
LC-15A2U 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 14 7 8 9 10
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LC-15A2U J TERMINAL Unit I H G F SWITCH Unit E D R/C Unit C B A 1 2 3 4 5 6 15 7 8 9 10
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LC-15A2U LC-15A2U BLOCK DIAGRAM 16-17
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LC-15A2U 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.
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LC-15A2U Ë SWITCH and R/C Unit J I H G F E D C B A 1 2 3 4 5 6 19 7 8 9 10
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LC-15A2U LC-15A2U 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 20
LC-15A2U LC-15A2U 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
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LC-15A2U LC-15A2U 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
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LC-15A2U PRINTED WIRING BOARD ASSEMBLIES J I H G F E D C Main Unit (Side-A) B A 1 2 3 4 5 6 26 7 8 9 10
PAGE 23
LC-15A2U J I H G F E D C Main Unit (Side-B) B A 1 2 3 4 5 6 27 7 8 9 10
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LC-15A2U J I H G F E D C B Terminal Unit (Side-A) A 1 2 3 4 5 6 28 7 8 9 10
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LC-15A2U J I H G F E D C B Terminal Unit (Side-B) A 1 2 3 4 5 6 29 7 8 9 10
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LC-15A2U J I Switch Unit (Side-A) H G Switch Unit (Side-B) F E D R/C Unit (Side-A) C R/C Unit (Side-B) B A 1 2 3 4 5 6 30 7 8 9 10
PAGE 27
LC-15A2U 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-15A2U Ref. No. ★ Part No.
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LC-15A2U Ref. No. Part No.
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LC-15A2U Ref. No. Part No. ★ Description Code Ref. No.
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LC-15A2U Ref. No. Part No. ★ Description Code Ref. No.
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LC-15A2U Ref. No. ★ Part No.
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LC-15A2U Ref. No. ★ Part No. Description Code Ref. No.
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LC-15A2U Ref. No. Part No. ★ Description Code Ref. No.
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LC-15A2U Part No. ★ Description Code Ref. No. CABINET AND MECHANICAL PARTS Part No. ★ Ref. No.
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LC-15A2U Ref. No. Part No. å AC Cord AC Adapter Antenna Cable Remote Control Battery (2 pcs.) ★ Code No. Part No. PACKING OFRef.
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LC-15A2U Ref. No. Part No. ★ Description - M E MRef. O No. - Code 41 Part No.
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LC-15A2U Ref. No. Part No. ★ Description - M E MRef. O No. - Code 42 Part No.
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LC-15A2U Ref. No. Part No. ★ Description Code Ref. No. 43 Part No.
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LC-15A2U LC-15A2U 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.