Sharp LC-15B2UA Service Manual

Lcd color television

Operation manual (45 pages)

Operation manual (46 pages)

Service manual (72 pages)

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Download this manual See also: Operating Manual

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

» SPECIFICATIONS ................................................................................................................................ 5

» OPERATION MANUAL ......................................................................................................................... 6

» DIMENSIONS ....................................................................................................................................... 7

» REMOVING OF MAJOR PARTS .......................................................................................................... 8

» ADJUSTING PROCEDURE OF EACH SECTION ............................................................................. 11

» TROUBLE SHOOTING TABLE ........................................................................................................... 22

» CHASSIS LAYOUT ............................................................................................................................. 26

» BLOCK DIAGRAMS ............................................................................................................................ 28

» DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 30

» SCHEMATIC DIAGRAMS ................................................................................................................... 31

» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 46

» PARTS LIST

Ë ELECTRICAL PARTS ..................................................................................................................... 52

MAIN UNIT ..................................................................................................................................... 52

TERMINAL UNIT ............................................................................................................................ 56

CONTROL UNIT ............................................................................................................................ 58

LED UNIT ....................................................................................................................................... 59

INVERTER UNIT ............................................................................................................................ 59

Ë CABINET PARTS LIST ................................................................................................................... 60

Ë SUPPLIED ACCESSORIES PARTS .............................................................................................. 60

Ë PACKING PARTS ........................................................................................................................... 60

Ë CABINET AND MECHANICAL PARTS .......................................................................................... 61

» PACKING OF THE SET ...................................................................................................................... 62

SHARP CORPORATION

SERVICE MANUAL

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

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

LCD COLOR TELEVISION

LC-15B2UA

SY1D8LC15B2UA

Page

Table of Contents

Summary of Contents for Sharp LC-15B2UA

Page 1: Table Of Contents
LC-15B2UA SERVICE MANUAL SY1D8LC15B2UA LCD COLOR TELEVISION LC-15B2UA 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-15B2UA 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 LC-15B2UA 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. • Utiliser un voltmètre CA d’une sensibilité d’au moins AVERTISSEMENT 5000Ω/V pour mesurer la chute de tension en travers...
Page 4 LC-15B2UA Ë Precautions for using lead-free solder 1 Employing lead-free solder “Main PWB” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.
Page 5: Specifications
LC-15B2UA SPECIFICATIONS Items ............. 15" LCD COLOR TV, Model: LC-15B2UA LCD panel ................. 15" ASV & BLACK-TFT LCD Number of dots .................. 921,600 dots VGA Video color system ......N358/N443/PAL/PAL-M/PAL-N/SECAM/PAL-60 TV Function Destination ..................USA/Latin A/Twn TV-Standard (CCIR) ..............NTSC/PAL-M/PAL-N TV-Tuning System ...................
Page 6: Operation Manual
LC-15B2UA OPERATION MANUAL Main unit (front view) Terminals Remote Control...
Page 7: Dimensions
LC-15B2UA DIMENSIONS (Unit: Inch/mm)
Page 8: Removing Of Major Parts
LC-15B2UA REMOVING OF MAJOR PARTS 1. Remove two Rear covers. 2. Remove the Table stand fixing screws (4 pcs.). 3. Remove the Cabinet B fixing screws (10 pcs.) and detach the cabinet. 4. Push on the of the Cabinet B, open the cabinet and detach eight hooks, and then detach the Cabinet B.
Page 9 LC-15B2UA 6. Remove the Main PWB fixing screws (3 pcs.). 7. Remove the Inverter PWB fixing screw (2 pcs.). 8. Remove the Terminal PWB fixing screws (4 pcs.). 9. Remove the LED PWB fixing screws (2 pcs.). 10. Remove the Control PWB fixing screws (2 pcs.).
Page 10 LC-15B2UA 13. Remove the LCD display unit fixing screws (4 pcs.). 14. Detach the Reflection/deflection sheet, Prism sheet and Diffusion sheet. 15. Detach four Reflection mirrors. 16. Remove the Fluorescent lamp. 17. Detach the Light guide plate. 18. Detach two Lamp reflection sheets.
Page 11: Adjusting Procedure Of Each Section
LC-15B2UA 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.
Page 12 LC-15B2UA 4. Adjustments Adjustment Adjusting conditions Adjusting method B+ Adjustment 1. Connect the DC voltmeter to pin (2) of 1. Adjust the "B+ Adj" value to 5.0 ± 0.02V with R3760. (R3760) P3702. * Keep the voltage at pin (2) of P3702 below 5.3V during the adjustment.
Page 13 LC-15B2UA Adjustment Adjusting conditions Adjusting method White balance 1. Receive the monoscope pattern adjustment signal. 2. Adjust the "RCUTOFF" and "BCUTOFF" settings on the page 2 of the adjustment process mode to become the proper white balance. Do not change the "GCUTOFF"...
Page 14 LC-15B2UA 5. Shipping setting list Channel ............................... 2ch Air/Cable ............................. Air Skip Data_CATV ..........................All Skip Skip Data_AIR ............................ All Skip Volume ..............................20 Picture ..............................30 Tint ..............................0 Color ..............................0 Black Level ............................0 SHARPNESS ............................0 RED-BLUE ............................
Page 15 LC-15B2UA 6. Test patterns in adjustment process mode (1) IC801 (video decoder) test pattern 1-1) Indication of the test pattern Set the screen to AV1, AV2, or component, and do not input a signal. It enters the adjustment process mode. By selecting “TEST PATTERN” on the third line of page 7 and changing the setting value to one of 1 - 6, the test pattern will be displayed.
Page 16 LC-15B2UA (3) Trouble shooting using test patterns Is the test pattern of IC801 displayed normally? Is the test pattern of IC1201 displayed normally? Check the signal output Is the waveform of pins line of IC801, IC801 and (10), (11), (13), (15), (17) its peripheral circuits.
Page 17 LC-15B2UA Descriptions of the terminals of Micon IC (IC2001) RH-iXA154WJN1Q No. Terminal Name Descriptions No. Terminal Name Descriptions V HOLD For closed caption Adjusting procedure For closed caption AV/SY/DY2 CCD input change for US MAINSW Main switch ON “H” / OFF “L”...
Page 18 LC-15B2UA List of the adjustment process mode menu Page Items Initial settings Descriptions Adjustments or descriptions of change Standard settings INCH SIZE Inch size select Adjustment MODEL B2UA Model name SYSTEM AUTO Color system change NTSC PWM FREQ Light control frequency setup...
Page 19 LC-15B2UA Page Items Initial settings Descriptions Adjustments or descriptions of change Video adjustment (VPC setup) [Continued] Comb filter setup Comb filter setup Comb filter setup KILVL 08 Color killer level setup KILHY 05 Color killer hysterysis setup VSYNC DELAY V-synchronized phase setup...
Page 20 LC-15B2UA Page Items Initial settings Descriptions Adjustments or descriptions of change Video adjustment (TV · Composite · S-video) [Continued] PAL-M TV COLOR 2600 Color thickness setup (TV) PAL-M AV COLOR 2600 Color thickness setup (Composite, S-video) PAL-M TV TINT Tint setup (TV)
Page 21 LC-15B2UA Page Items Initial settings Descriptions Adjustments or descriptions of change LCD controller setup (PAL) / Closed caption setup [continued] PAL 06 Horizontal display position PAL 07 Vertical display position PAL 08 UV data phase delay PAL 09 Panel clock adjustment...
Page 22: Trouble Shooting Table
LC-15B2UA TROUBLE SHOOTING TABLE No Power (Power LED indicator still in red) Go to the adjustment process mode. INCH SIZE MODEL B2UA SYSTEM AUTO NTSC PWM FREQ PAL PWM FREQ NTSC PWM DUTY PAL PWM DUTY TV GAIN ERROR NO RESET...
Page 23 LC-15B2UA TROUBLE SHOOTING TABLE (Continued)
Page 24 LC-15B2UA TROUBLE SHOOTING TABLE (Continued)
Page 25 LC-15B2UA TROUBLE SHOOTING TABLE (Continued)
Page 26: Chassis Layout
LC-15B2UA CHASSIS LAYOUT MAIN Unit (Side-A) MAIN Unit (Side-B)
Page 27 LC-15B2UA INVERTER Unit CONTROL Unit LED Unit TERMINAL Unit...
Page 28: Block Diagrams
LC-15B2UA LC-15B2UA BLOCK DIAGRAMS ANALOG UNIT DIGITAL UNIT TV-V TUNER TU3201 SIF-AMP. Q3201 Q3202 SY, SC SY, SC AV 1 TV-V S-VIDEO VIDEO L1, R1 INPUT SWITCH IC402 V2/VO AV 2 AUDIO VIDEO VIDEO L2, R2 INPUT IN/OUT IN/OUT DECODER...
Page 29: Description Of Schematic Diagram
LC-15B2UA DESCRIPTION OF SCHEMATIC DIAGRAM IMPORTANT SAFETY NOTICE: AVIS DE SECURITE IMPORTANT: å PARTS MARKED WITH " " ( ) ARE LES PIECES MARQUEES "å " ( ) SONT INPORTANT FOR MAINTAINING THE SAFETY OF IMPORTANTES POUR MAINTENIR LA SECURITE THE SET.
Page 30: Schematic Diagrams
LC-15B2UA SCHEMATIC DIAGRAMS Ë CONTROL Unit Ë LED Unit...
Page 31 LC-15B2UA LC-15B2UA Ë MAIN Unit -1/4 32~33...
Page 32 LC-15B2UA LC-15B2UA Ë MAIN Unit -2/4 34~35...
Page 33 LC-15B2UA LC-15B2UA Ë MAIN Unit -3/4 36~37...
Page 34 LC-15B2UA LC-15B2UA Ë MAIN Unit -4/4 38~39...
Page 35 LC-15B2UA LC-15B2UA å AND SHADED COMPONENTS=SAFETY RELATED PARTS Ë TERMINAL Unit -1/2 å 40~41...
Page 36 LC-15B2UA LC-15B2UA å AND SHADED COMPONENTS=SAFETY RELATED PARTS Ë TERMINAL Unit -2/2 å 42~43...
Page 37 LC-15B2UA Ë INVERTER Unit å AND SHADED COMPONENTS=SAFETY RELATED PARTS...
Page 38 LC-15B2UA - M E M O -...
Page 39: Printed Wiring Board Assemblies
LC-15B2UA PRINTED WIRING BOARD ASSEMBLIES Main Unit (Side-A)
Page 40: Main Unit
LC-15B2UA Main Unit (Side-B)
Page 41: Terminal Unit
LC-15B2UA Terminal Unit (Side-A)
Page 42 LC-15B2UA Terminal Unit (Side-B)
Page 43: Control Unit
LC-15B2UA Control Unit (Side-A) Inverter Unit (Side-A) LED Unit (Side-A)
Page 44 LC-15B2UA Control Unit (Side-B) Inverter Unit (Side-B) LED Unit (Side-B)
Page 45 3. NO. DE PIECE 4. DESCRIPTION in USA : Contact your nearest SHARP Parts Distributor to order. For location of SHARP Parts Distributor, please call Toll- in CANADA : Contact SHARP Electronics of Canada Limited. Free: 1-800-BE SHARP Phone: (416) 890-2100...
Page 46 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE11 C703 VCKYTV1CF105Z 16V Ceramic MAIN PWB UNIT(Continued) C705 VCKYCY1CF334Z J 0.33 16V Ceramic C706 VCEASM0JN226MY J 22 6.3V Electrolytic Q1103 VS2SA1036K/-1 J 2SA1036K C711 VCKYCY1EF104Z J 0.1...
Page 47 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE11 R412 VRS-CY1JF562J J 5.6k 1/16W Metal Oxide AA MAIN PWB UNIT(Continued) R414 VRS-CY1JF105J J 1M 1/16W Metal Oxide AA R415 VRS-CY1JF105J J 1M 1/16W Metal Oxide AA...
Page 48 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE11 R1202 VRS-CF1JP220JY J 22 1/16W Metal Oxide AC MAIN PWB UNIT(Continued) R1203 VRS-CF1JP220JY J 22 1/16W Metal Oxide AC R1204 VRS-CF1JP220JY J 22 1/16W Metal Oxide AC...
Page 49 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE11 D3605 VHDiMN10///-1 J IMN10 MAIN PWB UNIT(Continued) D3700 VHDDAN222//-1 J DAN222 D3703 VHDSFPB56//2E J SFPB56 BALUNES D3704 VHD1SS250//1E J 1SS250 D3705 VHD1SS250//1E J 1SS250 FB801 RBLN-0090CEZZ...
Page 50 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB128DE02 C3725 VCKYTV1CF105Z 16V Ceramic TERMINAL PWB UNIT(Continued) C3727 VCEAPW0JN477M J 470 6.3V Electrolytic C3728 VCKYTV1CF105Z 16V Ceramic C3346 VCCCCY1HH101J J 100p 50V Ceramic C3730 VCKYTV1HF104Z J 0.1...
Page 51 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB128DE02 R3728 VRS-CY1JF393J J 39k 1/16W Metal Oxide AA TERMINAL PWB UNIT(Continued) R3730 VRS-CY1JF223J J 22k 1/16W Metal Oxide AA R3731 VRS-CY1JF222J J 2.2k 1/16W Metal Oxide AA...
Page 52 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB129DE02 L6503 RCiLC0107CEZZ J Coil, 33µH CONTROL PWB UNIT(Continued) TRANSFORMERS RESISTORS å T6500 RTRNZ0805CEZZQ J Transformer R4005 VRS-CY1JF123J J 12k 1/16W Metal Oxide AA å T6501 RTRNZ0805CEZZQ J Transformer...
Page 53: Cabinet Parts List
LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code CABINET PARTS LIST XEBSD30P06000 J Screw, x2 XBPSN30P09JS0 J Screw, x3 TLABN0422CEZZ J No. Label CCABA2468CE01 J Front Cabinet Ass’y GCOVA2049CEKA J Terminal Cover (S) —————— J Front Cabinet —...
Page 54: Ë Cabinet And Mechanical Parts
LC-15B2UA CABINET AND MECHANICAL PARTS Ref. No. Part No. Description Code Ref. No. Part No. Description Code 1-10 1-10 LED Unit 1-12 CONTROL Unit MAIN Unit TERMINAL Unit 3-11 3-12 3-16 3-13 3-10 3-16 3-15 3-14 3-12 3-15 3-12 3-12...
Page 55: Packing Of The Set
LC-15B2UA PACKING OF THE SET Ref. No. Part No. Description Code Ref. No. Part No. Description Code Reinforcement Pad (SPAKF0575CEZZ) Operation Manual (TiNS-7603CEZZ) Cable Clamp, x 2 Operation Manual (LHLDW0109CESA) Polyethylene Bag Battery (SSAKA0160CEZZ) å AC Adapter (UADP-0242CEPZ) å AC Cord...
Page 56 LC-15B2UA Ref. No. Part No. Description Code Ref. No. Part No. Description Code...
Page 57 Part No. Description Code © COPYRIGHT 2002 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.

Sharp LC-15B2UA Service Manual

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Summary of Contents for Sharp LC-15B2UA

Table of Contents