Sharp LC-15A2E Service Manual
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Sharp LC-15A2E Service Manual

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» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2
» ELECTRICAL SPECIFICATIONS ......................................................................................................... 3
» OPERATION MANUAL ......................................................................................................................... 4
» OUTLINE DIMENSION FIGURE .......................................................................................................... 5
» DISASSEMBLY OF THE SET ............................................................................................................... 6
» ADJUSTING PROCEDURE OF EACH SECTION ............................................................................... 8
» TROUBLE SHOOTING TABLE ........................................................................................................... 10
» CHASSIS LAYOUT ............................................................................................................................. 16
» BLOCK DIAGRAMS ............................................................................................................................ 18
» WAVEFORMS ..................................................................................................................................... 22
» DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 24
» SCHEMATIC DIAGRAMS ................................................................................................................... 25
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 32
» PARTS LIST
Ë ELECTRICAL PARTS ..................................................................................................................... 37
MAIN UNIT ..................................................................................................................................... 37
SWITCH UNIT ................................................................................................................................ 41
R/C UNIT ........................................................................................................................................ 42
Ë SUPPLIED ACCESSORIES PARTS .............................................................................................. 42
Ë PACKING PARTS ........................................................................................................................... 42
Ë CABINET PARTS LIST ................................................................................................................... 43
Ë CABINET AND MECHANICAL PARTS .......................................................................................... 44
» PACKING OF THE SET ...................................................................................................................... 45
SERVICE MANUAL
LCD COLOUR TELEVISION
MODEL
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.
CONTENTS
SHARP CORPORATION
1
SX0L9LC-15A2E
LC-15A2E
Page
LC-15A2E

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  • Page 1: Table Of Contents

    LC-15A2E SERVICE MANUAL SX0L9LC-15A2E LCD COLOUR TELEVISION LC-15A2E MODEL 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 2: Important Service Safety Precaution

    LC-15A2E 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 • Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across 1.

  • Page 3: Electrical Specifications

    LC-15A2E ELECTRICAL SPECIFICATIONS Items ............. 15" LCD COLOUR TV, Model: LC-15A2E LCD panel ....................15" TFT LCD Number of pixels ..................921,600 dots Video colour system ................ PAL/NTSC/SECAM TV FUNCTION TV Standard (CCIR) ................BG/DK/I/L/L' TV Tuning System ...............Auto preset 100 ch.

  • Page 4: Operation Manual

    LC-15A2E OPERATION MANUAL Controls Terminals Front view Rear view To change the vertical angle of the LCD TV set, tilt the screen up to 10 degrees forward or 20 degrees backward. The TV set can also be rotated 90 degrees horizontally. Please adjust the angle so that the TV set can be watched most comfortably.

  • Page 5: Outline Dimension Figure

    LC-15A2E OUTLINE DIMENSION FIGURE 52.45 30.3 76.5 Units: mm...

  • Page 6: Disassembly Of The Set

    LC-15A2E DISASSEMBLY OF THE SET 1. Insert your finger into the center of the terminal cover <<Disassembly of the main PWB>> 1. Disconnect the flexible cable connectors q and and pull it toward you to detach the terminal cover. w from the LCD panel.
  • Page 7 LC-15A2E • Caution for handling the LCD panel <<Disassembly of LCD Panel>> 1. Work in a clean room. (Humidity: 50% or more) 1. Remove the six LCD unit fixing screws. 2. A worker must wear arm bands. 2. Remove the panel shield plate.

  • Page 8: Adjusting Procedure Of Each Section

    LC-15A2E ADJUSTING PROCEDURE OF EACH SECTION [1] Entering the MAIN side adjustment process mode There are three methods below. 1) Press the “Adjustment process key” on the remote control after turning on the power. 2) Pressing both the MENU key and the TV/VIDEO key on the main body, turn on the power. Then, press the volume DOWN key and the tuning UP key at the same time.
  • Page 9 LC-15A2E PAL/PAL60 SECAM NTSC y delay tint offset sub contrast sub colour y delay tint offset sub contrast sub colour y delay tint offset sub contrast sub colour AGC gain start 3-1. +B adjustment Page 9 of MAIN side adjustment process +B-ADJ Adjust the voltage of the pin 49 of SC401 to 5.0V±0.05V.

  • Page 10: Trouble Shooting Table

    LC-15A2E TROUBLE SHOOTING TABLE...
  • Page 11 LC-15A2E TROUBLE SHOOTING TABLE (Continued)
  • Page 12 LC-15A2E TROUBLE SHOOTING TABLE (Continued)
  • Page 13 LC-15A2E TROUBLE SHOOTING TABLE (Continued)
  • Page 14 LC-15A2E TROUBLE SHOOTING TABLE (Continued)
  • Page 15 LC-15A2E - M E M O -...

  • Page 16: Chassis Layout

    LC-15A2E CHASSIS LAYOUT MAIN Unit (Side-A) MAIN Unit (Side-B)
  • Page 17 LC-15A2E TUNER Unit SWITCH Unit R/C Unit...

  • Page 18: Block Diagrams

    LC-15A2E LC-15A2E BLOCK DIAGRAMS Ë MAIN BLOCK DIAGRAM SC401 DACA_L/R HEAD PHONE OUTPUT FLSP AUDIO FRSP DACM_L/R FRONT SPEAKER AMPLIFER IC903 REVERSE IC301 SC2 OUT L/R IC303 OUTPUT IC901 BUFFER PA VCC TUNER PA DC13V REAR SPEAKER IC902 TV/AV AUDIO...
  • Page 19 LC-15A2E LC-15A2E Ë TUNER BLOCK DIAGRAM HEAD PHONE SOUND(L/R) DACA_L/R HEAD PHONE HEAD PHONE HEAD PHONE AMP JACK Q18~Q23 OUTPUT SOUND(L/R) SC2 OUT L/R MSP OUTPUT OUTPUT TUNER AN IN1 MSP TUNER W7, W14 V IN2 VPC INPUT INPUT AV1 SOUND(L/R)

  • Page 20: Waveforms

    LC-15A2E WAVEFORMS A. V0 B. V16 C. V32 D. V48 E. V63 F. B-5.5 G. CSCOM H. GCK I. GSP J. VACT K. HC L. HSY...
  • Page 21 LC-15A2E M. VSY N. CK O. SPIO P. SPOI Q. HG R. IC2005 S. CSYNC T. VIDEO...

  • Page 22: Schematic Diagrams

    LC-15A2E SCHEMATIC DIAGRAMS Ë SWITCH and R/C Unit...
  • Page 23 LC-15A2E LC-15A2E Ë MAIN Unit -1/2 å AND SHADED COMPONENTS=SAFETY RELATED PARTS 26~27...
  • Page 24 LC-15A2E LC-15A2E Ë MAIN Unit -2/2 å AND SHADED COMPONENTS=SAFETY RELATED PARTS 28~29...
  • Page 25 LC-15A2E LC-15A2E Ë TUNER Unit å AND SHADED COMPONENTS=SAFETY RELATED PARTS 30~31...

  • Page 26: Printed Wiring Board Assemblies

    LC-15A2E PRINTED WIRING BOARD ASSEMBLIES Main Unit (Side-A)

  • Page 27: Main Unit

    LC-15A2E Main Unit (Side-B)
  • Page 28 LC-15A2E Tuner Unit (Side-A)
  • Page 29 LC-15A2E Tuner Unit (Side-B)

  • Page 30: Switch Unit

    LC-15A2E Switch Unit (Side-A) Switch Unit (Side-B) R/C Unit (Side-A) R/C Unit (Side-B)
  • Page 31 LC-15A2E PARTS LIST Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA314DE01 PARTS REPLACEMENT MAIN PWB UNIT Replacement parts which have these special safety character- INTEGRATED CIRCUITS istics identified in this manual: electrical components having IC201...
  • Page 32 LC-15A2E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA314DE01 C329 VCKYTV1CF105Z 16V Ceramic MAIN PWB UNIT(Continued) C330 VCEAPF1HN225M J 2.2 50V Electrolytic C341 RC-EZ0417CEZZ J 150 16V Electrolytic D712 VHDDAN222//-1 J DAN222 C342 RC-EZ0417CEZZ J 150...
  • Page 33 LC-15A2E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA314DE01 C1122 VCKYTV1CF105Z 16V Ceramic MAIN PWB UNIT(Continued) C1123 VCKYCY1EF104Z J 0.1 25V Ceramic C1124 VCKYCY1EF104Z J 0.1 25V Ceramic C848 VCEAPF0JW107M J 100 6.3V Electrolytic C1202 VCKYCY1HB103K J 0.01...
  • Page 34 LC-15A2E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA314DE01 R747 VRS-CY1JF000J 1/16W Metal Oxide AA MAIN PWB UNIT(Continued) R748 VRS-CY1JF000J 1/16W Metal Oxide AA R751 VRS-TW2ED332J J 3.3k 1/4W Metal Oxide AB R323 VRS-CY1JF472J J 4.7k 1/16W Metal Oxide AA...
  • Page 35 LC-15A2E Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA314DE01 R2033 VRS-CY1JF105J J 1M 1/16W Metal Oxide AA MAIN PWB UNIT(Continued) R2035 VRS-CY1JF102J J 1k 1/16W Metal Oxide AA R2041 VRS-CA1JF101J J 100 1/16W Metal Oxide AA...
  • Page 36 Part No. Description Code DUNTKA315DE01 SUPPLIED ACCESSORIES SWITCH PWB UNIT(Continued) LHLDW1028GEZZ J Cable Clamp RESISTORS å QACCK0002TAZZ J AC Cord(LC-15A2E) R4005 VRS-CY1JF123J J 12k 1/16W Metal Oxide AA å QACCB0016TAZZ J AC Cord(LC-15A2E(K)) R4006 VRS-CY1JF822J J 8.2k 1/16W Metal Oxide AA...
  • Page 37 J Screw GCOVA1857CESA J LED Cover QCNW-5812CEZZ J Terminal FFC GCOVA1914CESA J R/C Receptor Cover QCNW-5556CEZZ J RC/LED Cable HBDGB3154CESA J SHARP Badge QCNW-5813CEZZ J Operate Cable LANGS0130CEFW J Speaker Fixing Metal QCNW-5814CEZZ J Power Cable PSLDC3104CEZZ J Copper Film Sheet...

  • Page 38: R/C Unit

    LC-15A2E CABINET AND MECHANICAL PARTS Ref. No. Part No. Description Code Ref. No. Part No. Description Code 2-12 3-10 2-14 2-11 3-12 SWITCH Unit MAIN Unit 2-14 TUNER Unit 2-15 3-10 2-13 2-10 3-11 1-11 1-12 1-12 1-11 1-10 R/C Unit...

  • Page 39: Packing Of The Set

    LC-15A2E Ref. No. Part No. Description PACKING OF THE SET Code Ref. No. Part No. Description Code SSAKA0160CEZZ Operation Manual å AC Cord QACCK0002TAZZ(LC-15A2E) Polyethylene Bag QACCB0016TAZZ(LC-15A2E(K)) AC Adapter UADP-0210CEZZ Remote Control RRMCG1621CESA Battery (2 pcs.) UBATU0026GEZZ TiNS-7213CEZZ Operation Manual...
  • Page 40 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.

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