Sharp LC-15B2U Service Manual
  1. Manuals
  2. Brands
  3. Sharp Manuals
  4. LCD TV
  5. LC-15B2U
  6. Service manual
Sharp LC-15B2U Service Manual

Sharp LC-15B2U Service Manual

Lcd color television
Hide thumbs Also See for LC-15B2U:
Table of Contents

Advertisement

Quick Links

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 ............................................. 4
» OPERATION MANUAL ...................................... 5
» DIMENSIONS .................................................... 9
» REMOVING OF MAJOR PARTS ..................... 10
EACH SECTION .............................................. 13
» TROUBLE SHOOTING TABLE ........................ 16
» CHASSIS LAYOUT .......................................... 20
» BLOCK DIAGRAM ........................................... 22
Ë MAIN UNIT ................................................ 26
SHARP CORPORATION
SERVICE MANUAL
LCD COLOR TELEVISION
LC-15B2U
MODEL
CONTENTS
Page
Ë TERMINAL UNIT ....................................... 34
Ë JACK UNIT ................................................ 38
Ë ELECTRICAL PARTS ................................ 43
Ë MAIN UNIT ................................................ 43
Ë TERMINAL UNIT ....................................... 46
Ë OPERATION UNIT ..................................... 48
Ë JACK UNIT ................................................ 49
Ë R/C RECEIVER UNIT ................................ 49
Ë CABINET PARTS LOCATION .............. 49, 52
Ë CABINET AND MECHANICAL PARTS ..... 50
Ë ACCESSORIES PARTS ............................ 52
Ë PACKING PARTS ....................................... 52
» PACKING OF THE SET ................................... 53
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
1
LC-15B2U
S71W6LC-15B2U
Page

Advertisement

Table of Contents
loading

Related Manuals for Sharp LC-15B2U

Summary of Contents for Sharp LC-15B2U

  • Page 1: Table Of Contents

    LC-15B2U SERVICE MANUAL S71W6LC-15B2U LCD COLOR TELEVISION LC-15B2U MODEL 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-15B2U 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-15B2U 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: Specifications

    LC-15B2U Specifications Items LC-15B2U Model LCD panel 15” TFT LCD Number of dots 921,600 dots VGA Video color systems N358, N443, PAL, PAL-M, PAL-N, SECAM, PAL-60 Destination USA/Latin A/Twn TV Standard (CCIR) NTSC/PAL-M/PAL-N TV function TV Tuning System PLL 181 ch.

  • Page 5: Operation Manual

    LC-15B2U Operation Manual...
  • Page 6 LC-15B2U...
  • Page 7 LC-15B2U...
  • Page 8 LC-15B2U...

  • Page 9: Dimensions

    LC-15B2U Dimensions 19/484 12/305.3 (Active Area) 11.9/301.6 3.8/95.8 2.3/58.1 ANT. AV-IN1 VIDEO AV-IN2/OUT VIDEO AUDIO AUDIO S-VIDEO COMPONENT AUDIO H E A D PHONE POWER INPUT DC12V 2.5/64.4 7.8/198 (Unit: inch/mm)

  • Page 10: Removing Of Major Parts

    LC-15B2U 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 (13 pcs.) and detach the cabinet. 4. Release the wire holder at 1 location and peel off the tape.
  • Page 11 LC-15B2U 6. Remove the terminal PWB fixing screws (4 pcs.). 7. Remove the jack PWB fixing screws (2 pcs.). 8. Remove the main PWB fixing screws (2 pcs.). 9. Remove the R/C receiver PWB fixing screws (2 pcs.). 10. Remove the operation PWB fixing screws (2pcs.).
  • Page 12 LC-15B2U » 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.

  • Page 13: Adjusting Procedure Of Each Section

    LC-15B2U 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 14 LC-15B2U 3. Cancel of special mode Turn off the main unit power. 4. Adjustments Adjustment Adjusting conditions Adjusting method B+ Adjustment 1. Connect the DC voltmeter to 1. Adjust the "B+ Adj" value to (R3760) pin 38 of SC3403. 5.0 ±0.02V with R3760.
  • Page 15 LC-15B2U 5. Shipping setting list Channel ............................... 2ch Air/Cable ............................. Air Skip Data_CATV ..........................All Skip Skip Data_AIR ............................ All Not Skip Volume ..............................20 Picture ..............................30 Tint ..............................0 Color ..............................0 Black Level ............................0 SHARPNESS ............................0 RED-BLUE ............................

  • Page 16: Trouble Shooting Table

    LC-15B2U TROUBLE SHOOTING TABLE No Power (Power LED indicator still in red) Go to the adjustment process mode. +B-ADJ MODEL INCH SIZE SYSTEM AUTO NTSC PWM FREQ PAL PWM FREQ NTSC PWM DUTY PAL PWM DUTY TV GAIN ERROR NO RESET...
  • Page 17 LC-15B2U TROUBLE SHOOTING TABLE (Continued)
  • Page 18 LC-15B2U TROUBLE SHOOTING TABLE (Continued)
  • Page 19 LC-15B2U TROUBLE SHOOTING TABLE (Continued)

  • Page 20: Chassis Layout

    LC-15B2U CHASSIS LAYOUT MAIN Unit (Side A) JACK Unit OPERATION Unit R/C RECEIVER Unit TERMINAL Unit MAIN Unit (Side B)

  • Page 21: Block Diagram

    LC-15B2U BLOCK DIAGRAM TERMINAL UNIIT JACK UNIT L1, R1 TV-V S-VIDEO TUNER 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 Y, PB, PR...

  • Page 22: Description Of Schematic Diagram

    LC-15B2U 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 23: Schematic Diagramë Operation And R/C Receiver Unit

    LC-15B2U SCHEMATIC DIAGRAM Ë OPERATION and R/C RECEIVER Unit OPERATION R/C RECEIVER...

  • Page 24: Ë Main Unit

    LC-15B2U Ë MAIN Unit-1/4...
  • Page 25 LC-15B2U Ë MAIN Unit-2/4...
  • Page 26 LC-15B2U Ë MAIN Unit-3/4...
  • Page 27 LC-15B2U Ë MAIN Unit-4/4...

  • Page 28: Ë Terminal Unit

    LC-15B2U Ë TERMINAL Unit-1/2...
  • Page 29 LC-15B2U Ë TERMINAL Unit-2/2...

  • Page 30: Ë Jack Unit

    LC-15B2U Ë JACK Unit...

  • Page 31: Printed Wiring Board Assemblies

    LC-15B2U PRINTED WIRING BOARD ASSEMBLIES R/C Receiver Unit (Component Side) Operation Unit (Component Side) Jack Unit (Component Side)
  • Page 32 LC-15B2U Main Unit (Side-A)
  • Page 33 LC-15B2U Main Unit (Side-B)
  • Page 34 LC-15B2U Terminal Unit (Component Side)

  • Page 35: Parts List

    4. DESCRIPTION in USA: Contact your nearest SHARP Parts Distributor to order. in CANADA: Contact SHARP Electronics of Canada Limited For location of SHARP Parts Distributor, Please call Toll- Phone (416) 890-2100 Free; 1-800-BE-SHARP MARK: SPARE PARTS-DELIVERY SECTION MARQUE: SECTION LIVRAISON DES PIECES DE RECHANGE Ref.
  • Page 36 LC-15B2U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA562FE02 C1110 VCKYCY1EF104Z J 0.1 Ceramic C1111 VCKYCY1EF104Z J 0.1 Ceramic MAIN UNIT (Continued) C1112 VCKYCY1EF104Z J 0.1 Ceramic C1113 VCKYCY1EF104Z J 0.1 Ceramic L1204 VP-1M220J2R9N J Peaking 22µH C1114 VCKYCY1EF104Z J 0.1...
  • Page 37 LC-15B2U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA562FE02 R1153 VRS-CY1JF820J J 82 1/16W Metal Oxide R1202 VRS-CB1JF220J J 22 1/16W Metal Oxide MAIN UNIT (Continued) R1203 VRS-CA1JF220J J 22 1/16W Metal Oxide R1204 VRS-CB1JF220J...
  • Page 38 LC-15B2U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA562FE02 COILS AND TRANSFORMER L3201 VP-1M220J2R9N J Peaking 22µH MAIN UNIT (Continued) L3202 RCiLC0141CEZZ J Coil L3301 VP-1M101J7R7N J Peaking 100µH SC1201 QSOCN0461FJZZ J Socket, 53-pin L3302 VP-1M4R7J1R2N J Peaking 4.7µH...
  • Page 39 LC-15B2U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA563DE02 R3207 VRS-CY1JF102J J 1.0k 1/16W Metal Oxide R3208 VRS-CA1JF561J J 560 1/16W Metal Oxide TERMINAL UNIT (Continued) R3315 VRS-CY1JF433F J 43k 1/16W Metal Oxide R3316 VRS-CY1JF182J J 1.8k 1/16W Metal Oxide...
  • Page 40 LC-15B2U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA563DE02 R3750 VRS-CY1JF391J J 390 1/16W Metal Oxide R3751 VRS-TV1JD103J J 10k 1/16W Metal Oxide TERMINAL UNIT (Continued) R3752 VRS-CY1JF102J J 1.0k 1/16W Metal Oxide R3754 VRS-CY1JF103J...

  • Page 41: Ë Jack Unit

    LC-15B2U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA565DE02 CABINET PARTS LOCATION JACK UNIT CCABA2430CE01 J Front Cabinet Ass’y TRANSISTORS Not Available – Front Cabinet — Q5701 VSFZT1053A/-1 J FZT1053A GCOVA2004CEZZ J R/C-LED Cover Q5702 VSFZT1053A/-1...

  • Page 42: Cabinet And Mechanical Parts

    LC-15B2U CABINET AND MECHANICAL PARTS 1-10 OPERATION Unit 1-10 JACK Unit MAIN Unit R/C RECEIVER Unit TERMINAL Unit...
  • Page 43 LC-15B2U 3-11 3-12 3-16 3-14 3-16 3-10 3-15 3-12 3-12 3-15 3-14...

  • Page 44: Ë Cabinet Parts Location

    LC-15B2U Ref. No. Part No. Description Code Ref. No. Part No. Description Code CABINET PARTS LOCATION PACKING PARTS (Continued) (NOT REPLACEMENT ITEM) XBPSF30P08JS0 J Screw, x2 SPAKC5565CEZZ – Packing Case — XEBSD30P08000 J Screw, x6 SPAKP0913CEZZ – Polyethylene Bag —...

  • Page 45: Packing Of The Set

    LC-15B2U PACKING OF THE SET Operation Manual Cable Clamp (2 pcs.) Dry Battery (2 pcs.) AC Adapter AC Cord Antenna Cable Wireless Remote Control Buffer Material (Top) Polyethylene Bag Buffer Material (Bottom) Packing Case Not Replacement Item...
  • Page 46 LC-15B2U 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.

Table of Contents