Sharp LC-15B2H Service Manual
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Sharp LC-15B2H Service Manual

Sharp LC-15B2H Service Manual

Sharp lcd color television service manual
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Download this manual See also: Operating Manual
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.
PRECAUTION.................................................... 2
» SPECIFICATIONS ............................................. 3
» OPERATION MANUAL ...................................... 4
» DIMENSIONS .................................................... 5
» REMOVING OF MAJOR PARTS ....................... 6
EACH SECTION ................................................ 9
» TROUBLE SHOOTING TABLE ....................... 13
» CHASSIS LAYOUT .......................................... 16
» BLOCK DIAGRAM ........................................... 18
Ë MAIN UNIT ................................................ 22
SERVICE MANUAL
LCD COLOR TELEVISION
MODELS
CONTENTS
Page
» PACKING OF THE SET ................................... 49
SHARP CORPORATION
1
LC-15B2H
LC-15B2M
Ë TERMINAL UNIT ....................................... 30
Ë JACK UNIT ................................................ 34
Ë ELECTRICAL PARTS ................................ 39
Ë MAIN UNIT ................................................ 39
Ë TERMINAL UNIT ....................................... 41
Ë OPERATION UNIT .................................... 44
Ë JACK UNIT ................................................ 44
Ë R/C RECEIVER UNIT ................................ 45
Ë CABINET PARTS LOCATION ................... 45
Ë ACCESSORIES PARTS ............................ 48
Ë PACKING PARTS ...................................... 48
LC-15B2H
LC-15B2M
SX1LC-15B2H//
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Summary of Contents for Sharp LC-15B2H

  • Page 1: Table Of Contents

    LC-15B2H LC-15B2M SERVICE MANUAL SX1LC-15B2H// LCD COLOR TELEVISION LC-15B2H LC-15B2M MODELS 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.

  • Page 2: Important Service Safety Precaution

    LC-15B2H LC-15B2M 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: •Use an AC voltmeter having with 5000 ohm per volt, or...

  • Page 3: Specifications

    LC-15B2H LC-15B2M Specifications Items LC-15B2H/M Model LCD panel 15” TFT LCD Number of dots 921,600 dots VGA Video colour system World multi system TV Standard (CCIR) I/DK/M/BG TV Turning System Auto preset turning TV function STEREO/BILINGUAL NICAM-BG, I, DK/IGR-BG Universal R/C for TV only...

  • Page 4: Operation Manual

    LC-15B2H LC-15B2M Operation Manual Main unit (front view) Main unit (rear view) Upper control panel VOL (+)/(–) Antenna terminal A N T. CH ( )/( ) MENU TV/VIDEO VIDEO O U T AV -IN 2/ MAIN POWER VI D E O...

  • Page 5: Dimensions

    LC-15B2H LC-15B2M Dimensions MENU TV/VIDEO MAIN POWER PRESET 301.6 305.28 POWER SLEEP 95.8 58.1 AV-IN 1 VIDEO AV-IN 2/OUT VIDEO AUDIO AUDIO S-VIDEO COMPONENT AUDIO HEAD PHONE POWER INPUT DC12V 18 9 48.5 149.5 (Unit: mm)

  • Page 6: Removing Of Major Parts

    LC-13B2E REMOVING OF MAJOR PARTS 1. Remove the back cover. 2. Remove the table stand fixing screws (4 pcs.). 3. Remove the cabinet B fixing screws (9 pcs.) and detach the cabinet. 4. Peel off the tape. 5. Detach the connector from each PWB. Cabinet B Back cover Table stand...
  • Page 7 LC-13B2E 6. Remove the fixing angle fixing screws (2 pcs.). 7. Remove the terminal PWB fixing screws (3 pcs.). 8. Remove the jack PWB fixing screw (2 pc.). 9. Remove the main PWB fixing screws (1 pcs.). 10. Remove the LED PWB fixing screws (2 pcs.). 11.
  • Page 8 LC-13B2E » Precautions in handling the LCD panels 1. Work in a clean room (with humidities below 50%). 2. Be sure to wear an anti-static armband. 3. Handle the panels on an electroconductive mat. 4. Be careful not to fall, shake and shock the panels. 13.

  • Page 9: Adjusting Procedure Of Each Section

    LC-15B2H LC-15B2M ADJUSTING PROCEDURE OF EACH SECTION Preparation for Adjustments Use the dedicated AC adaptor or stable DC power supply. LC13B2 AC adaptor: UADP-0226CEPZ DC power supply: 12 ± 0.5V, 3.0 (A) [1] Adjusting procedure 1-1. Checker adjustment Power ON (initialization) → Setting of model and inch size → Model data transfer to the setting E PROM (I →...
  • Page 10 LC-15B2H LC-15B2M [5] Adjustment 5-1. +B adjustment...R3760 and a half fixations VOL 1) Receive the colour bar signal. 2) Adjust the voltage of the pin (38) of SC3403 to 5.00±0.02V. Note: Since 5.0V is a reference voltage of all power voltage, adjust it precisely.
  • Page 11 LC-15B2H LC-15B2M [6] Lamp error detection 6-1. Functional description This LCD colour television has a function (lamp error detection) to be turned OFF automatically for safety when the lamp or lamp circuit is abnormal. If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed, the followings occur.
  • Page 12 LC-15B2H LC-15B2M [7] PUBLIC MODE • How to enter into PUBLIC MODE 1. Turn off TV by pressing MAIN POWER switch. 2. While pressing VOL(+) key and CH(ù) buttons at the same time, press MAIN POWER switch. For more than 2 seconds.

  • Page 13: Trouble Shooting Table

    LC-15B2H LC-15B2M TROUBLE SHOOTING TABLE...
  • Page 14 LC-15B2H LC-15B2M TROUBLE SHOOTING TABLE (Continued)
  • Page 15 LC-15B2H LC-15B2M TROUBLE SHOOTING TABLE (Continued)

  • Page 16: Chassis Layout

    LC-15B2H LC-15B2M CHASSIS LAYOUT MAIN Unit (Side A) JACK Unit OPERATION Unit R/C RECEIVER Unit TERMINAL Unit MAIN Unit (Side B)

  • Page 17: Block Diagram

    LC-15B2H LC-15B2M BLOCK DIAGRAM TERMINAL UNIIT JACK UNIT L1, R1 TV-V TUNER S-VIDEO SY, SC TU3201 INPUT INVERTER LAMPS Q5701, Q5702 V2/VO T5701, T5702 COLD AUDIO VIDEO INPUT IN/OUT IN/OUT OUTPUT SWITCH SWITCH IC3501 Q3501-Q3505 Q3500 LAMP CHECK MAIN UNIT...

  • Page 18: Description Of Schematic Diagram

    LC-15B2H LC-15B2M DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: CAUTION: 1. Voltages at test points are measured at the This circuit diagram is original one, therefore there may be a supply voltage of AC 120V. Signals are fed by a slight difference from yours.

  • Page 19: Schematic Diagramë Operation And R/C Receiver Unit

    LC-15B2H LC-15B2M SCHEMATIC DIAGRAM Ë OPERATION and R/C RECEIVER Unit OPERATION R/C RECEIVER...

  • Page 20: Ë Main Unit

    LC-15B2H LC-15B2M Ë MAIN Unit-1/4...
  • Page 21 LC-15B2H LC-15B2M Ë MAIN Unit-2/4...
  • Page 22 LC-15B2H LC-15B2M Ë MAIN Unit-3/4...
  • Page 23 LC-15B2H LC-15B2M Ë MAIN Unit-4/4...

  • Page 24: Ë Terminal Unit

    LC-15B2H LC-15B2M Ë TERMINAL Unit-1/2...
  • Page 25 LC-15B2H LC-15B2M Ë TERMINAL Unit-2/2...

  • Page 26: Ë Jack Unit

    LC-15B2H LC-15B2M Ë JACK Unit...

  • Page 27: Printed Wiring Board Assemblies

    LC-15B2H LC-15B2M PRINTED WIRING BOARD ASSEMBLIES R/C Receiver Unit (Component Side) Operation Unit (Component Side) Jack Unit (Component Side)
  • Page 28 LC-15B2H LC-15B2M Main Unit (Side-A)
  • Page 29 LC-15B2H LC-15B2M Main Unit (Side-B)
  • Page 30 LC-15B2H LC-15B2M Terminal Unit (Component Side)

  • Page 31: Parts List

    LC-15B2H LC-15B2M Ref. No. Part No. Description Code Ref. No. Part No. Description Code IC2001 RH-iXA003WJZZQ J M306V0ME-149FP PARTS LIST IC2002 VHiPST529DM-1 J PST529DMT IC2003 VHiTC4W66F/-1 J TC4W66F IC2004 VHiBR2416E2-1 J BR24C16F PARTS REPLACEMENT TRANSISTORS Replacement parts which have these special safety characteristics...
  • Page 32 LC-15B2H LC-15B2M Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA562FE05 C1220 VCKYCY1EF104Z J 0.1 Ceramic C1222 VCKYCY1EF104Z J 0.1 Ceramic MAIN UNIT (Continued) C2006 VCKYCY1EF104Z J 0.1 Ceramic C2007 VCKYCY1EF104Z J 0.1 Ceramic C814 VCKYCY1HB102K...
  • Page 33 LC-15B2H LC-15B2M Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA562FE05 R2014 VRS-CA1JF101J J 100 1/16W Metal Oxide R2015 VRS-CB1JF331J J 330 1/16W Metal Oxide MAIN UNIT (Continued) R2016 VRS-CY1JF103J J 10k 1/16W Metal Oxide R2017 VRS-CA1JF102J J 1.0k 1/16W Metal Oxide...
  • Page 34 LC-15B2H LC-15B2M Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB001DE02 C3325 VCEAPF1HN225M J 2.2 Electrolytic C3328 VCEAPF1HN225M J 2.2 Electrolytic TERMINAL UNIT (Continued) C3329 VCEAPF1HN225M J 2.2 Electrolytic C3330 VCKYCY1EF104Z J 0.1 Ceramic Q3512 VS2SA1037KQ-1...
  • Page 35 LC-15B2H LC-15B2M Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB001DE02 R3358 VRS-CY1JF562J J 5.6k 1/16W Metal Oxide R3359 VRS-CY1JF101J J 100 1/16W Metal Oxide TERMINAL UNIT (Continued) R3360 VRS-CY1JF102J J 1.0k 1/16W Metal Oxide R3361 VRS-CY1JF102J J 1.0k 1/16W Metal Oxide...

  • Page 36: Ë Operation Unit

    LC-15B2H LC-15B2M Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB001DE02 P3500 QPLGN0174FJZZ J Plug, 2-pin P3501 QPLGN0174FJZZ J Plug, 2-pin TERMINAL UNIT (Continued) P3600 QPLGN0155FJZZ J Plug, 3-pin(HV) P3702 QPLGN0578GEZZ J Plug, 5-pin R3706 VRS-CY1JF100J...
  • Page 37 (LC-15B2M/M RESISTORS Not Available – Rear Cabinet — R4021 VRS-CY1JF101J J 100 1/16W Metal Oxide HiNDP5880CESA J Model Label (LC-15B2H) R4023 VRS-CY1JF472J J 4.7k 1/16W Metal Oxide HiNDP5884CESA J Model Label R4024 VRS-CY1JF471J J 470 1/16W Metal Oxide (LC-15B2M/M R4029 VRS-CY1JF472J J 4.7k 1/16W Metal Oxide...
  • Page 38 LC-15B2H LC-15B2M CABINET AND MECHANICAL PARTS 1-10 OPERATION Unit 1-10 JACK Unit MAIN Unit R/C RECEIVER Unit TERMINAL Unit...
  • Page 39 LC-15B2H LC-15B2M 3-11 3-12 3-16 3-14 3-16 3-10 3-15 3-12 3-12 3-15 3-14...

  • Page 40: Ë Cabinet Parts Location

    CABINET PARTS LOCATION SUPPLIED ACCESSORIES (Continued) QCNW-6008CEZZ J Connecting Cord LHLDW0109CESA J Cable Clamp(2 pcs.) LX-BZ3442CEFF J Screw, x4 å QACCB0016TAZZ J AC Cord(LC-15B2H) PSPAG0411CEZZ J Spacer å QACCK0002TAZZ J AC Cord(LC-15B2M) XBBSD30P06000 J Screw, x1 å QACCL0002TAZZ J AC Cord(LC-15B2M...

  • Page 41: Packing Of The Set

    LC-15B2H LC-15B2M PACKING OF THE SET Operation Manual (TiNS-7507CEZZ (LC-15B2H)) Polyethylene Bag (TiNS-7508CEZZ (LC-15B2M/M (SSAKA0160CEZZ) Cable Clamp (2 pcs.) (LHLDW0109CEZZ) Dry Battery (2 pcs.) AC Adapter (UADP-0226CEPZ) AC Cord Wireless Remote Control (QACCB0016TAZZ (LC-15B2H)) (RRMCG1663CESA) (QACCK0002TAZZ (LC-15B2M)) (QACCL0002TAZZ (LC-15B2M Buffer Material (Top)
  • Page 42 LC-15B2H LC-15B2M COPYRIGHT © 2001 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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