Sharp LC-32X20E Service Manual

SERVICE MANUAL
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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.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY
PRECAUTION.....................................................i
Precautions for using lead-free solder ...............ii
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS ......................................... 1-1
[2] OPERATION MANUAL .................................. 1-2
[3] DIMENSIONS ................................................ 1-7
CHAPTER 2. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS
(LC-32X20E/S/RU)......................................... 2-1
[2] REMOVING OF MAJOR PARTS
(LC-37X20E/S/RU)....................................... 2-11
CHAPTER 3. ADJUSTMENT PROCEDURE
[1] ADJUSTMENT PROCEDURE ....................... 3-1
CHAPTER 4. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE....................... 4-1
CHAPTER 5. MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS.......................... 5-1
CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM
[1] SYSTEM BLOCK DIAGRAM ......................... 6-1
[2] TERMINAL BLOCK DIAGRAM .....................6-2
[3] MAIN BLOCK DIAGRAM...............................6-3
[4] POWER BLOCK DIAGRAM ..........................6-4
[5] WIRING DIAGRAM (LC-32X20E/S/RU)........6-5
[6] WIRING DIAGRAM (LC-37X20E/S/RU)........6-6
CHAPTER 7. PRINTED WIRING BOARD
[1] MAIN UNIT PRINTED WIRING BOARD........7-1
[2] TERMINAL UNIT PRINTED WIRING
BOARD..........................................................7-5
[3] R/C, LED UNIT PRINTED WIRING
BOARD..........................................................7-8
[4] KEY UNIT PRINTED WIRING BOARD .........7-8
[5] MINI AV UNIT PRINTED WIRING
BOARD..........................................................7-9
[6] POWER UNIT PRINTED WIRING
BOARD........................................................ 7-11
CHAPTER 8. SCHEMATIC DIAGRAM
[1] DESCRIPTION OF SCHEMATIC
DIAGRAM......................................................8-1
[2] SCHEMATIC DIAGRAM ................................8-2
Parts Guide
TopPage
CONTENTS
No. S97S9LC32X20E
LC-32X20E/S/RU, LC-37X20E/S/RU
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-
inal condition and only parts identical to those specified should be used.
LCD COLOUR TELEVISION
LC-32X20E/S/RU
LC-37X20E/S/RU
MODELS

Sharp LC-32X20E Specifications

General

Brand	Sharp
Model	LC-32X20E
Category	LCD TV
Language	English

Summary

Safety Precautions

Important Service Safety Precautions

Essential safety guidelines for service technicians handling the equipment, including warnings and cautions.

Precautions for Using Lead-Free Solder

Guidelines for working with lead-free solder during repairs, including soldering techniques and bit maintenance.

Chapter 1: Operation Manual

Specifications

Details technical specifications, model variations, input/output terminals, and power requirements.

Operation Manual

Explains remote control functions and basic TV operations.

Dimensions

Provides physical dimensions and weight specifications for the TV units.

Chapter 2: Removing of Major Parts

Removing of Major Parts (LC-32X20E/S/RU)

Step-by-step guide for disassembling major components of the LC-32X20E/S/RU model.

Removing of Major Parts (LC-37X20E/S/RU)

Step-by-step guide for disassembling major components of the LC-37X20E/S/RU model.

Chapter 3: Adjustment Procedure

Adjustment Procedure

Details methods for adjusting picture and VCOM settings after component replacement.

Chapter 4: Troubleshooting Table

Troubleshooting Table

Provides a diagnostic flowchart for common issues like no power, no picture, or no sound.

Chapter 5: Major IC Informations

Major IC Informations

Lists and describes key integrated circuits (ICs) used in the television and their functions.

Chapter 6: Block Diagram/Wiring Diagram

System Block Diagram

High-level overview of the television's internal system architecture and signal flow.

Terminal Block Diagram

Illustrates the layout and connectivity of external input/output terminals.

Main Block Diagram

Detailed block diagram of the main processing and functional units within the TV.

Power Block Diagram

Shows the power supply circuitry and its distribution throughout the unit.

Wiring Diagram (LC-32X20E/S/RU)

Illustrates the internal wiring connections for the LC-32X20E/S/RU model.

Wiring Diagram (LC-37X20E/S/RU)

Illustrates the internal wiring connections for the LC-37X20E/S/RU model.

Chapter 7: Printed Wiring Board

Main Unit Printed Wiring Board

Shows the component layout on the main printed wiring board (Side A and Chip Parts).

Terminal Unit Printed Wiring Board

Shows the component layout on the terminal unit printed wiring board (Side A and Chip Parts).

R/C, LED Unit Printed Wiring Board

Illustrates the component layout for the remote control and LED unit.

Key Unit Printed Wiring Board

Shows the component layout for the key input unit.

Mini AV Unit Printed Wiring Board

Depicts the component layout for the mini AV unit.

Power Unit Printed Wiring Board

Shows the component layout on the power unit printed wiring board.

Chapter 8: Schematic Diagram

Description of Schematic Diagram

Provides guidelines on reading schematics, voltage measurement conditions, and component indications.

Schematic Diagram

Detailed circuit schematics of the television's various units and modules.

Parts Guide

Printed Wiring Board Assemblies

Lists the part numbers for the various printed wiring board assemblies.

LCD Panel and Tuner

Lists LCD panel and tuner assemblies, noting they are supplied as a unit.

DUNTKE237FM02 (MAIN Unit)

Parts list for the MAIN Unit assembly.

DUNTKE238FM01 (TERMINAL Unit)

Parts list for the TERMINAL Unit assembly.

DUNTKE264FM01 (R/C, LED Unit)

Parts list for the R/C, LED Unit assembly.

DUNTKE266FM01 (KEY Unit)

Parts list for the KEY Unit assembly.

DUNTKE306FM01(MINI AV UNIT)

Parts list for the MINI AV UNIT assembly.

Cabinet Parts (LC-32X20E/S/RU)

List of cabinet parts specific to the LC-32X20E/S/RU models.

Cabinet Parts (LC-37X20E/S/RU)

List of cabinet parts specific to the LC-37X20E/S/RU models.

Supplied Accessories

Lists accessories supplied with the television.

Packing Parts

Details the parts included in the product packaging.

Service Jigs

Lists any special service jigs required for maintenance.