Sharp LC-37LE320

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-37LE320 Specifications

General

Brand	Sharp
Model	LC-37LE320
Category	LCD TV
Language	English

Summary

Safety Precautions

Important Service Safety Precautions

Guidelines for service technicians and safety checks.

Warning

Crucial safety information regarding circuit modifications and power disconnection.

Caution

Specific caution about replacing fuses with identical types to prevent fire risks.

Before Returning the Receiver (Fire & Shock Hazard)

Safety checks required before returning the receiver to the user.

Safety Notice

Information on special safety-related electrical and mechanical parts and their replacement.

Precautions for Using Lead-Free Solder

Using Lead-Free Wire Solder

Advice on applying lead-free solder when fixing PWBs soldered with it.

Soldering Precautions

Recommendations for soldering with lead-free solder, including temperature and tip maintenance.

Chapter 1: Operation Manual

Specifications

Detailed technical specifications for various LCD Colour TV models.

Operation Manual

Instructions on how to use the remote control unit and its functions.

Dimensions

Detailed physical dimensions of the TV screen sizes.

Chapter 2: Removing of Major Parts

Removing of Major Parts (LC-19 LE320)

Step-by-step guide for disassembling the 19" panel, including base removal.

Removing of Major Parts (LC-22 LE320)

Step-by-step guide for disassembling the 22" panel, including base removal.

Removing of Major Parts (LC-26 LE320)

Step-by-step guide for disassembling the 26" panel, including base removal.

Removing of Major Parts (LC-32 LE320)

Step-by-step guide for disassembling the 32" panel, including base removal.

Removing of Major Parts (LC-37 LE320)

Step-by-step guide for disassembling the 37" panel, including base removal.

Removing of Major Parts (LC-42 LE320)

Step-by-step guide for disassembling the 42" panel, including base removal.

Chapter 3: Adjustment Procedure

Adjustment Procedure

Details on how to perform adjustments using the OSD menu.

Service Mode

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

Software Upgrade Procedure

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

Chapter 4: Troubleshooting Table

19 Troubleshooting Table

Troubleshooting guide for power unit and inverter circuits for 19" models.

22 Troubleshooting Table

Troubleshooting guide for power unit operation checks for 22" models.

26 Troubleshooting Table

Troubleshooting guide for power unit operation checks for 26" models.

32 Troubleshooting Table

Troubleshooting guide for power unit operation checks for 32" models.

37 Troubleshooting Table

Troubleshooting guide for power unit operation checks for 37" models.

42 Troubleshooting Table

Troubleshooting guide for power unit operation checks for 42" models.

Chapter 5: Major IC Informations

Major IC Informations

Detailed information about the MT5363LICG IC, including its description and key features.

Chapter 6: Block DiagramWiring Diagram

Block Diagram (Main Board)

Block diagram showing the function of the main board for 19"/22"/26" models.

Chapter 7: Printed Wiring Board

Main Unit PWB (19, 22, 26)

Printed wiring board layout for the main unit of 19", 22", and 26" models (Side-A).

Main Unit PWB (Side-B)

Printed wiring board layout for the main unit (Side-B).

Main Unit PWB (32, 37, 42)

Printed wiring board layout for the main unit of 32", 37", and 42" models (Side-A).

Main Unit PWB (Side-B)

Printed wiring board layout for the main unit (Side-B).

Power Unit PWB (19 and 22 panel)

Printed wiring board layout for the power unit (Side-A).

Power Unit PWB (Side-B)

Printed wiring board layout for the power unit (Side-B).

POWER UNIT PRINTED WIRING BOARD (for 26)

Printed wiring board layout for the power unit (Side-A).

POWER UNIT (Side-B)

Printed wiring board layout for the power unit (Side-B).

POWER UNIT PRINTED WIRING BOARD (for 32 and 37)

Printed wiring board layout for the power unit (Side-A).

POWER UNIT (Side-B)

Printed wiring board layout for the power unit (Side-B).

POWER UNIT PRINTED WIRING BOARD (for 42)

Printed wiring board layout for the power unit (Side-A).

POWER UNIT (Side-B)

Printed wiring board layout for the power unit (Side-B).

Key Unit Printed Wiring Board

Printed wiring board layout for the Key Unit (Side-A and Side-B).

IR Unit Printed Wiring Board

Printed wiring board layout for the IR Unit (Side-A and Side-B).

MEMC Unit Printed Wiring Board

Printed wiring board layout for the MEMC Unit (Side-A).

MEMC UNIT (Side-B)

Printed wiring board layout for the MEMC Unit (Side-B).

RS232 Unit Printed Wiring Board

Printed wiring board layout for the RS232 Unit (Side-A and Side-B).

Convert Unit Printed Wiring Board (for 19 and 22 AUO panel)

Printed wiring board layout for the Convert Unit (AUO panel).

Convert UNIT PRINTED WIRING BOARD (for 19 and 22 CMO panel)

Printed wiring board layout for the Convert Unit (CMO panel).

Chapter 8: Schematic Diagram

Main Schematic Diagram (for 19, 22 and 26)

Schematic diagram for the main unit of 19", 22", and 26" models.

01. POWER-1

Schematic diagram for the power supply unit (Part 1).

02. POWER-2

Schematic diagram for the power supply unit (Part 2) showing voltage regulators.

03. TUNER

Schematic diagram for the TV tuner and its related components, including IF filters and demodulators.

04. MT5363 BYPASSTRAP.

Schematic showing bypass and trap circuits related to the MT5363 IC, including strapping modes.

05. MT5363 PERIPHERALUSB2.0

Schematic diagrams for MT5363 peripherals and USB2.0 interface connections.

06. DDR2 MEMORY

Schematics showing the DDR2 memory interface and de-coupling capacitors.

07. FLASHJTAGUARTIRRS232

Schematic diagrams for flash memory, JTAG, UART, IR, and RS232 interfaces.

08. CI CARD

Schematic for the CI (Common Interface) card and related circuitry, including HW strapping.

09. SCARTMonitor OUT

Schematic diagrams for SCART and Monitor output circuits.

10. YPBPRVGA INSPDIF OUT

Schematic diagrams for YPbPr, VGA input, and SPDIF output circuits.

11. HDMI1 HDMI2 INPUT

Schematic diagrams for HDMI1, HDMI2, and HDMI3 input circuits, including ESD protection and EDID EEPROM.

12. AUDIO AMPHEADPHONE OUT

Schematic diagrams for the audio amplifier and headphone output circuits, including mute and shutdown controls.

13. LVDS OUTPUT

Schematic diagrams for the LVDS output, including control signals and connectors.

01. POWER-1

Schematic diagram for the power supply unit (Part 1) for 32"/37"/42" models.

02. POWER-2

Schematic diagram for the power supply unit (Part 2) showing voltage regulators.

03. TUNER

Schematic diagram for the TV tuner and its related components, including IF filters and demodulators.

04. MT5363 BYPASSTRAP.

Schematic showing bypass and trap circuits related to the MT5363 IC, including strapping modes.

05. MT5363 PERIPHERALUSB2.0

Schematic diagrams for MT5363 peripherals and USB2.0 interface connections.

06. DDR2 MEMORY

Schematics showing the DDR2 memory interface and de-coupling capacitors.

07. FLASHJTAGUARTIRRS232

Schematic diagrams for flash memory, JTAG, UART, IR, and RS232 interfaces.

08. CI CARD

Schematic for the CI (Common Interface) card and related circuitry, including HW strapping.

09. SCART1 SCART2

Schematic diagrams for SCART and Monitor output circuits.

10. YPBPRVGA INSPDIF OUT

Schematic diagrams for YPbPr, VGA input, and SPDIF output circuits.

11. HDMI1 HDMI2 INPUT

Schematic diagrams for HDMI1, HDMI2, and HDMI3 input circuits, including ESD protection and EDID EEPROM.

12. AUDIO AMPHEADPHONE OUT

Schematic diagrams for the audio amplifier and headphone output circuits, including mute and shutdown controls.

13. LVDS OUTPUT

Schematic diagrams for the LVDS output, including control signals and connectors.

[3] Key Schematic Diagram

Schematic diagram for the key input buttons on the TV.

[4] IR Schematic Diagram

Schematic diagram for the infrared receiver unit.

[5] MEMC Schematic Diagram

Schematic diagram for the MEMC power supply and DC converter.

2. MT8282 PERIPHERAL

Diagrams showing MT8282 peripheral interfaces, including UART, Serial Flash, and Crystal.

4. MT8282 LVDS TXRX

Diagrams illustrating LVDS transmitter and receiver connections.

5. BLOCK & POWER DIAGRAM

Block diagram and power diagram showing the interconnectedness of major components.

[6] RS232 Schematic Diagram

Schematic diagram for the RS232 interface.

[7] Convert Schematic Diagram (for 19 and 22 AUO panel)

Schematic diagram for the Convert Unit (AUO panel).

Convert SCHEMATIC DIAGRAM (for 19 and 22 CMO panel)

Schematic diagram for the Convert Unit (CMO panel).

Chapter 9: Parts Guide

Spare Parts List

A comprehensive list of spare parts for the LC-19LE320E(AUO) model.

Cabinet Parts (LC-19 LE320)

Cabinet Parts List (LC-19 LE320 E(AUO))

List of cabinet parts for the LC-19LE320E(AUO) model.

Cabinet Parts (LC-22 LE320)

Cabinet Parts List (LC-22 LE320 E(AUO))

List of cabinet parts for the LC-22LE320E(AUO) model.

Cabinet Parts (LC-26 LE320)

Cabinet Parts List (LC-26 LE320 E(AUO))

List of cabinet parts for the LC-26LE320E(AUO) model.

Cabinet Parts (LC-32 LE320)

Cabinet Parts List (LC-32 LE320 E(AUO))

List of cabinet parts for the LC-32LE320E(AUO) model.

Cabinet Parts (LC-37 LE320)

Cabinet Parts List (LC-37 LE320 E(AUO))

List of cabinet parts for the LC-37LE320E(AUO) model.

Cabinet Parts (LC-42 LE320)

Cabinet Parts List (LC-42 LE320 E(AUO))

List of cabinet parts for the LC-42LE320E(AUO) model.

Supplied Accessories

Stand Unit and Screws

Diagram showing stand units and screws for different TV sizes.

AC Cord

Illustration of the AC power cord and its product shape variation.

Remote Control and Batteries

Illustration of the remote control and AAA batteries.

Operation Manual

Image of the Operation Manual booklet.

Quick Setup Guide

Image of the Quick Setup Guide booklet.

Packing Parts (19)

Packing Parts List (LC-19 LE320 E(AUO))

List of packing parts for the LC-19LE320E(AUO) model.

Packing Parts (22)

Packing Parts List (LC-22 LE320 E(AUO))

List of packing parts for the LC-22LE320E(AUO) model.

26 Packing Parts

Packing Parts List (LC-26 LE320 E(AUO))

List of packing parts for the LC-26LE320E(AUO) model.

32 Packing Parts

Packing Parts List (LC-32 LE320 E(AUO))

List of packing parts for the LC-32LE320E(AUO) model.

37 Packing Parts

Packing Parts List (LC-37 LE320 E(AUO))

List of packing parts for the LC-37LE320E(AUO) model.

42 Packing Parts

Packing Parts List (LC-42 LE320 E(AUO))

List of packing parts for the LC-42LE320E(AUO) model.