Sharp LC-15B1U Service Manual
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Sharp LC-15B1U Service Manual

Sharp LC-15B1U Service Manual

Lcd color television
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Download this manual See also: Operating Manual
» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2
» PRECAUTIONS FOR USING LEAD - FREE SOLDER ........................................................................ 4
» SPECIFICATIONS ................................................................................................................................ 5
» OPERATION MANUAL ......................................................................................................................... 6
» DIMENSIONS ....................................................................................................................................... 7
» REMOVING OF MAJOR PARTS .......................................................................................................... 8
» ADJUSTING PROCEDURE OF EACH SECTION ............................................................................. 11
» TROUBLE SHOOTING TABLE ........................................................................................................... 23
» CHASSIS LAYOUT ............................................................................................................................. 28
» BLOCK DIAGRAMS ............................................................................................................................ 30
» DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 32
» SCHEMATIC DIAGRAMS ................................................................................................................... 33
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 47
Ë ELECTRICAL PARTS ..................................................................................................................... 62
MAIN UNIT ..................................................................................................................................... 62
TERMINAL UNIT ............................................................................................................................ 66
CONTROL UNIT ............................................................................................................................ 69
LED UNIT ....................................................................................................................................... 69
INVERTER UNIT ............................................................................................................................ 69
Ë CABINET PARTS LIST ................................................................................................................... 70
Ë SUPPLIED ACCESSORIES PARTS .............................................................................................. 70
Ë PACKING PARTS ........................................................................................................................... 70
Ë CABINET AND MECHANICAL PARTS .......................................................................................... 71
» PACKING OF THE SET ...................................................................................................................... 73
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.
1
LCD COLOR TELEVISION
LC-15B1U
LC-15B1U
S62K9LC-15B1U
Page

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Summary of Contents for Sharp LC-15B1U

  • Page 1: Table Of Contents

    LC-15B1U SERVICE MANUAL S62K9LC-15B1U LCD COLOR TELEVISION LC-15B1U 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-15B1U 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-15B1U 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: Precautions For Using Lead - Free Solder

    LC-15B1U 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-15B1U SPECIFICATIONS LCD panel ..........15" Advanced Super View & 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 ................... PLL 181 ch.

  • Page 6: Operation Manual

    LC-15B1U OPERATION MANUAL Main unit (Front view) Main unit (Rear view) Upper control panel VIDEO VOL (–)/(+) VI DE O OU T AUDIO (L) AV -IN 2/ AV-IN2/OUT CH ( )/( ) AU DI O AUDIO (R) MENU NE NT...

  • Page 7: Dimensions

    LC-15B1U DIMENSIONS MENU TV/VIDEO MAIN POWER /484 1/16 /305.3 1/64 /301.6 /98.8 57/64 /61.1 13/32 /100 15/16 VIDEO AV-IN1 AUDIO VIDEO S-VIDEO AV-IN 2/OUT AUDIO HEAD PHONE COMPONENT ANT. AUDIO POWER INPUT DC12V (Unit: Inch/mm) 1/16 /149.5 /48.5 57/64 29/32...

  • Page 8: Removing Of Major Parts

    LC-15B1U 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 hooks of the Cabinet B, open the cabinet and detach eight hooks, and then detach the Cabinet B.
  • Page 9 LC-15B1U 7. Remove the Main PWB fixing screws (3 pcs.). 8. Remove the Inverter PWB fixing screw (2 pcs.). 9. Remove the Terminal PWB fixing screws (4 pcs.). 10. Remove the LED PWB fixing screws (2 pcs.). 11. Remove the Control PWB fixing screws (2 pcs.).
  • Page 10 LC-15B1U 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-15B1U 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-15B1U 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-15B1U Adjustment Adjusting conditions Adjusting method White balance 1. Receive the monoscope pattern signal. adjustment 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-15B1U 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-15B1U 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-15B1U (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-15B1U Descriptions of the terminals of Micon IC (IC2001) RH-iXA276WJZZQ 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-15B1U 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 Model name CARD Card system ON/OFF setup SYSTEM AUTO Color system change NTSC PWM FREQ...
  • Page 19 LC-15B1U 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-15B1U 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-15B1U 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 LC-15B1U Page Items Initial settings Descriptions Adjustments or descriptions of change Power off mode / V jitter correspondence / Card setting DENKA PORT Mode setup in power-off time DENKA TESTP Mode setup in power-off time DENKA TESTP2 30ms Mode setup in power-off time...

  • Page 23: Trouble Shooting Table

    LC-15B1U TROUBLE SHOOTING TABLE No Power (Power LED indicator still in red) Go to the adjustment process mode. INCH SIZE MODEL CARD SYSTEM AUTO NTSC PWM FREQ PAL PWM FREQ NTSC PWM DUTY PAL PWM DUTY TV GAIN ERROR NO RESET...
  • Page 24 LC-15B1U TROUBLE SHOOTING TABLE (Continued)
  • Page 25 LC-15B1U TROUBLE SHOOTING TABLE (Continued)
  • Page 26 LC-15B1U TROUBLE SHOOTING TABLE (Continued)
  • Page 27 LC-15B1U TROUBLE SHOOTING TABLE (Continued)

  • Page 28: Chassis Layout

    LC-15B1U CHASSIS LAYOUT MAIN Unit (Side-A) MAIN Unit (Side-B)
  • Page 29 LC-15B1U INVERTER Unit CONTROL Unit LED Unit TERMINAL Unit...

  • Page 30: Block Diagrams

    LC-15B1U LC-15B1U BLOCK DIAGRAMS ANALOG UNIT DIGITAL UNIT TV- V 5V REG. TUNER PC CARD IC7102 TU3201 3.3V RE G. UNIT SIF-AMP. IC901 Q3201 SUBDIN. SUBDOUT Q3202 SY, SC SY, SC TV- V S-VIDEO VIDEO L1, R1 INPUT SWITCH BUFFER IC903...

  • Page 31: Description Of Schematic Diagram

    LC-15B1U 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 32: Schematic Diagrams

    LC-15B1U SCHEMATIC DIAGRAMS Ë CONTROL Unit Ë LED Unit...
  • Page 33 LC-15B1U LC-15B1U Ë MAIN Unit -1/4 DIGITAL 1 34~35...
  • Page 34 LC-15B1U LC-15B1U Ë MAIN Unit -2/4 DIGITAL 2 36~37...
  • Page 35 LC-15B1U LC-15B1U Ë MAIN Unit -3/4 DIGITAL 3 38~39...
  • Page 36 LC-15B1U LC-15B1U Ë MAIN Unit -4/4 DIGITAL 4 40~41...
  • Page 37 LC-15B1U LC-15B1U å AND SHADED COMPONENTS=SAFETY RELATED PARTS Ë TERMINAL Unit -1/2 ANALOG 1 42~43...
  • Page 38 LC-15B1U LC-15B1U å AND SHADED COMPONENTS=SAFETY RELATED PARTS Ë TERMINAL Unit -2/2 ANALOG 2 å 44~45...
  • Page 39 LC-15B1U Ë INVERTER Unit å AND SHADED COMPONENTS=SAFETY RELATED PARTS å å...
  • Page 40 LC-15B1U - M E M O -...

  • Page 41: Printed Wiring Board Assemblies

    LC-15B1U PRINTED WIRING BOARD ASSEMBLIES Ë MAIN Unit Side-A (Component Parts)
  • Page 42 LC-15B1U Ë MAIN Unit Side-B (Component Parts)
  • Page 43 LC-15B1U LC-15B1U Ë MAIN Unit Side A (Chip Parts) C701 P2003 D701 P2004 C702 R714 R705 C908 R1247 C2022 C7104 Q2005 R712 C1208 Q2006 R2060 L901 C1217 R2057 R2024 R2068 R1018 R419 C409 C414 R415 R2033 C1228 R2062 D1206 L402...
  • Page 44 LC-15B1U LC-15B1U Ë MAIN Unit Side B (Chip Parts) D1211 IC703 D902 FB903 FB901 R715 R1237 IC901 R1239 R911 R1249 R1248 R1240 D1209 R2066 D901 R910 R2064 D2005 R2065 Q1204 R1230 R1251 R2052 R1250 R2049 TP2005 TP2001 R2003 TP2002 C1233...
  • Page 45 LC-15B1U Ë Terminal Unit Side-A (Component Parts)
  • Page 46 LC-15B1U Ë Terminal Unit Side-B (Component Parts)
  • Page 47 LC-15B1U LC-15B1U Ë TERMINAL Unit Side A (Chip Parts) 56~57...
  • Page 48 LC-15B1U Ë Control Unit Side-A (Component Parts) Ë Inverter Unit Side-A (Component Parts) Ë LED Unit Side-A (Component Parts)
  • Page 49 LC-15B1U Ë Control Unit Side-B (Component Parts) Ë Inverter Unit Side-B (Component Parts) Ë LED Unit Side-B (Component Parts)
  • Page 50 LC-15B1U LC-15B1U Ë CONTROL Unit Side A (Chip Parts) Ë INVERTER Unit Side A (Chip Parts) Ë LED Unit Side A (Chip Parts) 60~61...

  • Page 51: Parts List

    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 52 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE23 C409 VCKYTV1AB105K 10V Ceramic MAIN PWB Unit (Continued) C410 VCKYCY1EF104Z J 0.1 25V Ceramic C411 VCKYTV1AB105K 10V Ceramic Q711 VS2SA1037KQ-1 J 2SA1037KQ C412 VCCCCY1HH331J J 330p 50V Ceramic...
  • Page 53 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE23 C2021 VCEASM1CW107MY J 100 16V Electrolytic MAIN PWB Unit (Continued) C2023 VCEASM1CN106MY J 10 16V Electrolytic C7054 VCKYCY1HB103K J 0.01 50V Ceramic C7104 VCEASM1CN107MY J 100...
  • Page 54 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE23 R1164 VRS-CY1JF000J 1/16W Metal Oxide AA MAIN PWB Unit (Continued) R1166 VRS-CY1JF104F J 100k 1/16W Metal Oxide AA R1167 VRS-CY1JF103F J 10k 1/16W Metal Oxide AA...
  • Page 55 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKA670FE23 IC3304 RH-iX3370CEN1Q J MSP3440G-QA-B8 MAIN PWB Unit (Continued) IC3305 VHiLA4635A+-1S J LA4635A IC3501 VHiTC4053BF1E J TC4053BF IC3701 VHiNJM2377M-1 J NJM2377M R2011 VRS-CB1JF101J J 100 1/16W Metal Oxide AA...
  • Page 56 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB128DE05 C3382 VCKYCY1HB102K J 1000p 50V Ceramic TERMINAL PWB Unit (Continued) C3383 VCKYCY1EF104Z J 0.1 25V Ceramic C3384 VCKYCY1EF104Z J 0.1 25V Ceramic CAPACITORS C3385 VCKYCY1HB472K J 4700p 50V Ceramic...
  • Page 57 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB128DE05 R3528 VRS-CY1JF471J J 470 1/16W Metal Oxide AA TERMINAL PWB Unit (Continued) R3529 VRS-CY1JF471J J 470 1/16W Metal Oxide AA R3530 VRS-CY1JF104J J 100k 1/16W Metal Oxide AA...
  • Page 58 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB128DE05 DUNTKB130DE05 TERMINAL PWB Unit (Continued) LED PWB Unit R3901 VRS-TQ2BD000J 1/8W Metal Oxide AA TRANSISTORS R3902 VRS-TQ2BD000J 1/8W Metal Oxide AA Q4003 VSDTC144EE/-1 J DTC144EE Q4004...
  • Page 59 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKB131DE05 å 5 KLMP-0122CEZZ J Fluorescent Lamp INVERTER PWB Unit (Continued) PGiDM0070CEZZ J Light Guide Plate PMiR-0294CEZZ J Reflection Mirror, x2 R6506 VRS-CY1JF103J J 10k 1/16W Metal Oxide...

  • Page 60: Terminal Unit

    LC-15B1U CABINET AND MECHANICAL PARTS Ref. No. Part No. Description Code Ref. No. Part No. Description Code 1-10 1-11 1-10 1-11 LED Unit CONTROL Unit MAIN Unit TERMINAL Unit 44-3 44-2 44-1...
  • Page 61 LC-15B1U Ref. No. Part No. Description Code Ref. No. Part No. Description Code 3-11 3-12 3-16 3-13 3-10 3-16 3-15 3-14 3-12 3-15 3-12 3-12 3-17...

  • Page 62: Packing Of The Set

    LC-15B1U PACKING OF THE SET Ref. No. Part No. Description Code Ref. No. Part No. Description Code Reinforcement Pad (SPAKF0575CEZZ) Operation Manual (TiNS-A108WJZZ) Cable Clamp, x 2 Operation Manual (LHLDW0109CESA) Polyethylene Bag Battery (SSAKA0160CEZZ) å AC Adapter (UADP-0242CEPZ) å AC Cord...
  • Page 63 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.

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