Sharp LC-37A37M Service Manual
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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.
This model is based on the LC-32A37M and partially modified.
For the contents not covered in this Service Manual, accordingly, please refer to the LC-32A37M (SY8U6LC32A37M)

Service Manual.

DIFFERENCES FROM BASE MODEL.. . ............i
CAUTION ............................................... . ...........ii
[1]
SPECIFICATIONS ................................. . ....... 1-1
[1]
OPERATION MANUAL .......................... . ....... 2-1
[1]
DIMENSIONS ........................................ . ....... 3-1
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
SERVICE MANUAL
LCD COLOR TELEVISION
MODEL
OUTLINE
CONTENTS
[1]
REMOVING OF MAJOR PARTS...................4-1
[1]
OVERALL WIRING DIAGRAM ......................5-1
[1]
POWER UNIT................................................6-1
[2]
INVERTER UNIT ...........................................6-4
[1]
SCHEMATIC DIAGRAM ................................7-1
No. S19W2LC37A37M
LC-37A37M
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LC-37A37M

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Summary of Contents for Sharp LC-37A37M

  • Page 1: Table Of Contents

    TopPage LC-37A37M SERVICE MANUAL No. S19W2LC37A37M LCD COLOR TELEVISION LC-37A37M 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: Outline And Differences From Base Model Outline

    LC-37A37M LC37A37M Service Manual OUTLINE AND DIFFERENCES FROM BASE MODEL OUTLINE This model is based on the LC-32A37M and partially modified. For the contents not covered in this Service Manual, accordingly, please refer to the LC-32A37M (SY8U6LC32A37M) Service Manual. DIFFERENCES FROM BASE MODEL LIST OF CHANGED PARTS Ref.
  • Page 3: Safety Precaution

    LC-37A37M LC37A37M Service Manual SAFETY PRECAUTION IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING • Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs 1.
  • Page 4: Precautions For Using Lead-Free Solder

    LC-37A37M PRECAUTIONS FOR USING LEAD-FREE SOLDER Employing lead-free solder • “All PWBs” 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: Chapter 1. Specifications

    Operating Temperature 0°C - 40°C As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.
  • Page 6: Chapter 2. Operation Manual Operation Manual

    LC-37A37M LC37A37M Service Manual CHAPTER 2. OPERATION MANUAL [1] OPERATION MANUAL 1. PARTS NAMES TV (Front/Side) POWER (On/Off) button MENU button TV/VIDEO button Channel up( down ( ) buttons Volume up (+)/ down (-) buttons Remote control sensor POWER indicator...
  • Page 7: Remote Control Unit

    LC-37A37M 2. REMOTE CONTROL UNIT Colour (Red/Green/Yellow/Blue) TELETEXT mode: Select a page. 10 AV MODE Select an audio and video setting. 11 SLEEP Set the Sleep timer. 0hr.30min. 1hr.00min. 1hr.30min. 2hr.30min. 2hr.00min. (Mute) Press Mutes sound. Press again Restores sound.
  • Page 8: Chapter 3. Dimensions Dimensions

    LC-37A37M LC37A37M Service Manual CHAPTER 3. DIMENSIONS [1] DIMENSIONS Unit: mm 819.6 3 – 1...
  • Page 9: Chapter 4. Removing Of Major Parts

    LC-37A37M LC37A37M Service Manual CHAPTER 4. REMOVING OF MAJOR PARTS [1] REMOVING OF MAJOR PARTS 1. REMOVING OF REAR CABINET 1. Remove the 11 screws [1], 3 screws [2] and detach the Rear Cabinet. Rear Cabinet 4 – 1...
  • Page 10 LC-37A37M 2. REMOVING OF CONNECTORS, SPEAKERS, STAND COVER ASS’Y AND STAND ASS’Y 1. Remove all the connectors from all the PWBs. 2. Remove 2 screws [1] and detach the Speaker-L and Speaker-R. 3. Remove the 2 screws [2], 4 screws [3] and detach the Stand Cover Ass’y.
  • Page 11 LC-37A37M 3. REMOVING OF PWB UNITS 1. Remove the 1 screw [1] and detach the R/C, LED PWB Unit. 2. Remove the 6 screws [2] and detach the MAIN PWB Unit. 3. Remove the 4 screws [3] and detach the POWER PWB Unit.
  • Page 12 LC-37A37M 4. REMOVING OF LCD PANEL UNIT 1. Remove the 4 screws [1] and detach the LCD Panel Unit from Front Cabinet. Front Cabinet LCD Panel Unit 4 – 4...
  • Page 13: Chapter 5. Overall Wiring Diagram

    LC-37A37M Service Manual LC37A37M CHAPTER 5. OVERALL WIRING DIAGRAM [1] OVERALL WIRING DIAGRAM 5 – 1...
  • Page 14: Chapter 6. Printed Wiring Board

    LC-37A37M Service Manual LC37A37M CHAPTER 6. PRINTED WIRING BOARD [1] POWER UNIT POWER Unit Side-A 6 – 1...
  • Page 15 LC-37A37M POWER Unit Side-B 6 – 2...
  • Page 16 LC-37A37M POWER Unit Chip Parts Side-B TL7214 R7244 R7242 Q7205 TL7205 Q7209 RJ1 R7222 D7207 TL7005 TL7220 R7266 TL7208 TL7106 R7226 Q7203 TL7206 D7226 TL7103 TL7216 TL7006 TL7201 Q7206 TL7203 TL7202 TL7219 TL7212 TL7008 TL7221 R7262 TL7007 Q7201 Q7207 R7103...
  • Page 17: Inverter Unit

    LC-37A37M [2] INVERTER UNIT INVERTER Unit Side-A 6 – 4...
  • Page 18 LC-37A37M INVERTER Unit Chip Parts Side-A C7905 C7906 C7909 C7910 C7913 C7914 C7917 C7918 T7900 T7901 T7902 T7903 T7904 T7905 T7907 T7906 T7908 T7909 T7910 T7911 JA101 JA106 JA317 JA421 JA311 JA314 JA307 JA304 RDA7800 Q7809 Q7807 Q7811 Q7810 JA404...
  • Page 19 LC-37A37M INVERTER Unit Side-B 6 – 6...
  • Page 20 LC-37A37M INVERTER Unit Chip Parts Side-B TL7907 TL7903 TL7902 TL7900 TL7901 TL7906 TL7905 TL7904 TL7908 TL7931 TL7936 TL7935 TL7934 TL7937 TL7933 TL7932 TL7930 TL7945 TL7944 TL7943 TL7942 TL7941 TL7940 TL7939 TL7938 TL7915 TL7914 TL7910 TL7912 TL7909 TL7911 TL7913 D7907 D7900...
  • Page 21: Chapter 7. Schematic Diagram

    LC-37A37M Service Manual LC37A37M CHAPTER 7. SCHEMATIC DIAGRAM [1] SCHEMATIC DIAGRAM 1. DESCRIPTION OF SCHEMTIC DIAGRAM 7 – 1...
  • Page 22 LC-37A37M 2. POWER UNIT AND SHADED COMPONENTS=SAFETY RELATED PARTS 7 – 2...
  • Page 23 LC-37A37M 3. INVERTER UNIT AND SHADED COMPONENTS=SAFETY RELATED PARTS 7 – 3...
  • Page 24 LC-37A37M 7 – 4...
  • Page 25: Parts Guide

    LC-37A37M PartsGuide PARTS GUIDE No. S19W2LC37A37M LCD COLOR TELEVISION LC-37A37M MODEL Note: The reference numbers on the PWB are arranged in alphabetical order. CONTENTS PRINTED WIRING BOARD LCD PANEL MODULE ASSEMBLIES SUPPLIED ACCESSORIES LCD UNIT PACKING PARTS (NOT DUNTKF064FM02 (POWER UNIT)
  • Page 26 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [1] PRINTED WIRING BOARD ASSEMBLIES DUNTKF064FM02 POWER Unit DUNTKF067FM06 MAIN Unit DUNTKF068FM01 R/C. LED Unit DUNTKF069FM01 KEY Unit DUNTKF072FM01 INVERTER Unit RUNTKA552WJZZ GND Unit (Top) RUNTKA553WJZZ GND Unit (Bottom) [2] LCD UNIT R1LK370T3GW40W 37"LCD Panel Module...
  • Page 27 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [3] DUNTKF064FM02 (POWER UNIT) D7217 VHDSBR10010-1 SBR100-10JS-CHC11 D7218 RH-EXA550WJZZY MAZ8130GML D7219 RH-EXA560WJZZY MAZ8180GML D7220 RH-EXA584WJZZY MAZ8390GML D7221 RH-EXA584WJZZY MAZ8390GML D7222 VHDMA111G++-1Y MA2J1110GL D7223 VHDD1FL20U/-1Y D1FL20U-5053 D7224 RH-EX1014GEZZY PTZTE2515B D7225 VHDMA111G++-1Y MA2J1110GL...
  • Page 28 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [3] DUNTKF064FM02 (POWER UNIT) R7206 VRS-CY1JF334FY 330k 1/16W Metal Oxide R7208 VRS-CY1JF473JY 47k 1/16W Metal Oxide R7209 VRS-TV1JD103JY 10k 1/16W Metal Oxide R7210 VRS-VV3DB470J 47 2W Metal Oxide R7212 VRS-CY1JF103JY 10k 1/16W Metal Oxide...
  • Page 29 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [4] DUNTKF072FM01 (INVERTER UNIT) C7700 VCCCCY1HH221JY 220p 50V Ceramic C7701 VCCCCY1HH221JY 220p 50V Ceramic C7702 VCCCCY1HH221JY 220p 50V Ceramic C7703 VCCCCY1HH221JY 220p 50V Ceramic C7708 VCCCCY1HH221GY 220p 50V Ceramic C7710 VCKYCY1CB103KY 0.01 16V Ceramic...
  • Page 30 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [4] DUNTKF072FM01 (INVERTER UNIT) D7900 VHD1SS226//-1Y 1SS226(T5L,F,T) D7901 VHD1SS226//-1Y 1SS226(T5L,F,T) D7902 VHD1SS226//-1Y 1SS226(T5L,F,T) D7903 VHD1SS226//-1Y 1SS226(T5L,F,T) D7904 VHD1SS226//-1Y 1SS226(T5L,F,T) D7905 VHD1SS226//-1Y 1SS226(T5L,F,T) D7906 VHD1SS226//-1Y 1SS226(T5L,F,T) D7907 VHD1SS226//-1Y 1SS226(T5L,F,T) D7916 VHD1SS352//-1Y 1SS352(TPH3,F)
  • Page 31 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [4] DUNTKF072FM01 (INVERTER UNIT) R7809 VRS-TV1JD470FY 47 1/16W Metal Oxide R7810 VRS-TV1JD470FY 47 1/16W Metal Oxide R7811 VRS-CY1JF104JY 100k 1/16W Metal Oxide R7812 VRS-TV1JD103FY 10k 1/16W Metal Oxide R7813 VRS-TV1JD470FY 47 1/16W Metal Oxide...
  • Page 32 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [4] DUNTKF072FM01 (INVERTER UNIT) R7972 VRS-TV1JD154JY 150k 1/16W Metal Oxide R7973 VRS-TV1JD154JY 150k 1/16W Metal Oxide R7974 VRS-TV1JD154JY 150k 1/16W Metal Oxide R7975 VRS-TV1JD154JY 150k 1/16W Metal Oxide R7976 VRS-TV1JD154JY 150k 1/16W Metal Oxide...
  • Page 33 LC-37A37M [5] CABINET PARTS...
  • Page 34 LC-37A37M PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [5] CABINET PARTS CCABAC274WJ41 Front Cabinet Ass'y Not Available Front Cabinet Ass'y HBDGBA056WJSA SHARP Badge HDECQB176WJ4A LED Cover PSPAGA713WJZZ Mask Himaron, x2 PSPAHB906WJ4Z Mask Himaron, x4 CCABBB502WJ41 Rear Cabinet Ass'y Not Available...
  • Page 35 LC-37A37M [6] LCD PANEL MODULE 19-18 19-22 19-19 19-12 19-10 19-8 19-9 19-16 19-13 19-7 19-15 19-14 19-5 19-21 19-17 19-11 19-3 19-4 19-2 19-10 19-1 19-2 19-6 19-20 PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [6] LCD PANEL MODULE R1LK370T3GW40W 37"...
  • Page 36 LC-37A37M [7] SUPPLIED ACCESSORIES Remote control unit AC cord Cable clamp “AA” size battery (x 2) Stand unit Operation manual Stand base Screws (x 4) PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [7] SUPPLIED ACCESSORIES RRMCGA609WJSA Remote Control Unit (except Hong Kong)
  • Page 37 LC-37A37M [8] PACKING PARTS (NOT REPLACEMENT ITEM) PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [8] PACKING PARTS (NOT REPLACEMENT ITEM) SPAKCE783WJZZ Packing Case SPAKXC399WJZZ Bottom Pad SPAKPA801WJZZ Wrapping Paper SPAKXC398WJZZ Top Pad SSAKA0128AJZZ Sack SSAKA0005PEZZ A4 Sack TLABV0182AJZZ No Card...
  • Page 38 LC-37A37M © COPYRIGHT 2009 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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