Sharp LC-22LE320

LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
1
SERVICE MANUAL
No.
LED COLOUR TELEVISION
LC-19LE320
LC-22LE320
LC-26LE320
LC-32LE320
LC-37LE320
MODELS LC-42LE320
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 PRE-
CAUTION .....................................................................2
Precautions for using lead-free solder ......……….........3
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS ..................................................4
[2] OPERATION MANUAL ...........................................6
[3] DIMENSIONS ........................................................11
CHAPTER 2. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS ..........................12
CHAPTER 3. ADJUSTMENT PROCEDURE
[1] ADJUSTMENT PROCEDURE...............................37
[2] SERVICE MODE....................................................50
[3]
SOFTWARE UPGRADE PROCEDURE................51
CHAPTER 4. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE...............................52
CHAPTER 5. MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS...............................127
CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM
[1] BLOCK DIAGRAM...............................................149
CONTENTS
[2] POWER MANAGEMENT BLOCK DIAGRAM.........151
[3] WIRING DIAGRAM ................................................153
CHAPTER 7. PRINTED WIRING BOARD
[1] MAIN UNIT PRINTED WIRING BOARD .................158
[2] POWER UNIT PRINTED WIRING BOARD.............162
[3] KEY UNIT PRINTED WIRING BOARD ...................170
[4] IR UNIT PRINTED WIRING BOARD ......................171
[5] MEMC UNIT PRINTED WIRING BOARD................172
[6] RS232 UNIT PRINTED WIRING BOARD................174
[7] Convert UNIT PRINTED WIRING BOARD..............175
CHAPTER 8. SCHEMATIC DIAGRAM
[1] MAIN SCHEMATIC DIAGRAM ..............................177
[2] POWER SCHEMATIC DIAGRAM............................203
[3] KEY SCHEMATIC DIAGRAM..................................208
[4] IR SCHEMATIC DIAGRAM......................................209
[5] MEMC SCHEMATIC DIAGRAM...............................210
[6] RS232 SCHEMATIC DIAGRAM...............................215
[7] Convert SCHEMATIC DIAGRAM.............................216
CHAPTER 9. Parts Guide
[1] SPARE PARTS LIST...............................................218
[2] CABINET PARTS ...................................................311
[3] SUPPLIED ACCESSOORIES............................... ..323
[4] PACKING PARTS....................................................324
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-
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SHARP CORPORATION

Sharp LC-22LE320 Specifications

General

Brand	Sharp
Model	LC-22LE320
Category	LCD TV
Language	English

Summary

Safety Precautions

Important Service Safety Precautions

Essential safety measures for service technicians to follow during TV repair and servicing.

Warnings and Cautions

Critical warnings regarding fire risk from incorrect fuse replacement and shock hazards.

Precautions for Using Lead-Free Solder

Using Lead-Free Wire Solder

Guidelines on applying lead-free wire solder for PWB repair to avoid damage or accidents.

Soldering Procedures

Recommendations for using lead-free solder, including soldering bit care and part replacement.

Chapter 1: Operation Manual

Specifications

Detailed technical specifications for various LCD Colour TV models.

Operation Manual

User guide on operating the TV using the remote control and front panel buttons.

Dimensions

Physical dimensions of the TV models including stand and wall mounting VESA compatibility.

Chapter 2: Removing of Major Parts

Removing of Major Parts

Step-by-step instructions for disassembling the TV, covering panel removal and component board access.

Chapter 3: Adjustment Procedure

Adjustment Procedure

Details on OSD menu settings and alignment methods for display adjustments.

Service Mode

Instructions on how to enter and navigate the factory service mode menu.

Software Upgrade Procedure

Step-by-step guide for upgrading the TV firmware using USB flash drives.

Chapter 4: Troubleshooting Table

Troubleshooting Table

Diagnostic table for common power unit and main unit issues.

No Sound Issues

Troubleshooting steps for problems related to no sound output from speakers or terminals.

No Picture Issues

Diagnostic steps for display problems, including LVDS signal and control signal checks.

Chapter 5: Major IC Informations

Major IC Informations

Detailed technical information on key ICs like MT5363LICG, Si2163, and MAX3232EEUE.

Chapter 6: Block Diagram and Wiring Diagram

Block Diagram

Functional block diagram of the main board for different TV sizes.

Chapter 7: Printed Wiring Board

Main Unit Printed Wiring Board

Component layout diagrams for the main unit's printed wiring board for 19”, 22”, and 26” models.

Power Unit Printed Wiring Board

Component layout diagrams for the power unit's printed wiring board for the 26” model.

Key Unit Printed Wiring Board

Component layout diagrams for the key unit's printed wiring board.

Chapter 8: Schematic Diagram

Main Schematic Diagram

Detailed schematic diagrams for the main unit, including power and other critical circuits.

Chapter 9: Parts Guide

Spare Parts List

Comprehensive list of all spare parts with TPV Code, SHARP Code, and description.