Sharp LC-22DC30M

LC-22DC30M
SERVICE MANUAL
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 ............................................................i
PRECAUTIONS FOR USING LEAD-FREE
SOLDER ............................................................ii
OUTLINE
MAJOR SERVICE PARTS ................................ iii
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATIONS ......................................... 1-1
CHAPTER 2. OPERATION MANUAL
[1] OPERATION MANUAL .................................. 2-1
CHAPTER 3. DIMENSIONS
[1] DIMENSIONS ................................................ 3-1
CHAPTER 4. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS ................... 4-1
CHAPTER 5. ADJUSTMENT
[1] ADJUSTMENT PROCEDURE ....................... 5-1
[2] USB Clone (Smart Loader) ............................ 5-6
[3] PUBLIC MODE SETTING PROCEDURE........ 5-7
CHAPTER 6. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE....................... 6-1
CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM
[1] OVERALL WIRING DIAGRAM......................7-1
[2] SYSTEM BLOCK DIAGRAM.........................7-2
CHAPTER 8. PRINTED WIRING BOARD ASSEM-
BLIES
[1] MAIN Unit ......................................................8-1
CHAPTER 9. SCHEMATIC DIAGRAM
[1] DESCRIPTION OF SCHEMATIC DIA-
GRAM............................................................9-1
[2] MAIN Unit ......................................................9-2
Parts Guide
TopPage
CONTENTS
No. S12V630DC30M/
LC-22DC30M
MODEL
LCD COLOUR TELEVISION
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.

Sharp LC-22DC30M Specifications

General

Brand	Sharp
Model	LC-22DC30M
Category	LCD TV
Language	English

Summary

SAFETY PRECAUTIONS

IMPORTANT SERVICE SAFETY GUIDELINES

Safety rules for qualified technicians during servicing.

PRE-RETURN SAFETY CHECKS

Essential safety checks before returning the unit to the user.

SAFETY NOTICE ON REPLACEMENT PARTS

Importance of using specified parts for safety and performance.

TECHNICAL SPECIFICATIONS

LCD PANEL AND VIDEO SPECIFICATIONS

DISASSEMBLY PROCEDURES

REAR CABINET ASSEMBLY REMOVAL

SIDE COVER AND MAIN UNIT REMOVAL

LCD PANEL MODULE AND SUPPORT ANGLE REMOVAL

SERVICE ADJUSTMENT PROCEDURES

ACCESSING AND EXITTING ADJUSTMENT MODE

How to enter and exit the TV's service adjustment process mode.

REMOTE CONTROL AND KEYBOARD OPERATIONS

SOFTWARE UPGRADE VIA USB

Steps to update the TV's firmware using a USB device.

EDID DATA INPUT FOR HDMI AND PC

SIGNAL ADJUSTMENT PROCEDURES

SIGNAL CHECK AND COMPONENT ADJUSTMENT

Verifies signal levels and adjusts component inputs (15K/33K).

PC RGB SIGNAL ADJUSTMENT

WHITE BALANCE CALIBRATION

Detailed procedure for white balance adjustment using a luminance meter.

FACTORY SETTINGS AND INITIALIZATION

SHIPMENT SETTING PROCEDURE

Instructions for performing factory settings after shipment.

USB CLONE FUNCTIONALITY (SMART LOADER)

SMART LOADER OPERATION AND DATA TRANSFER

Explains replicating TV settings using the Smart Loader via USB.

PUBLIC MODE SETTINGS CONFIGURATION

STARTING AND EXITING PUBLIC MODE

PUBLIC MODE MENU OPTIONS AND EXPLANATIONS

TROUBLESHOOTING GUIDE

NO POWER OR STARTUP ISSUES

Troubleshooting steps for power-related startup problems.

TROUBLESHOOTING NO VIDEO (RF INPUT)

Diagnosing no-video issues when using RF signal input.

TROUBLESHOOTING NO VIDEO (COMPONENT INPUT)

Diagnosing no-video issues with component signal input.

AUDIO TROUBLESHOOTING

NO AUDIO FROM UHFVHF RECEPTION

Steps to diagnose no audio issues with UHF/VHF reception.

NO AUDIO FROM EXTERNAL INPUTS (AV)

Troubleshooting no audio from external AV inputs.

NO AUDIO FROM HDMI INPUT (DIGITAL)

Diagnosing no audio issues with HDMI digital audio input.

NO AUDIO FROM HDMI INPUT (ANALOG)

Troubleshooting no audio from HDMI analog audio input.

NO AUDIO FROM PC INPUT

Steps to troubleshoot no audio output from PC input.

SCHEMATIC DIAGRAM DESCRIPTIONS

SCHEMATIC DIAGRAM CONVENTIONS AND CAUTIONS

MAIN UNIT SCHEMATIC (TUNER SECTION)

MAIN UNIT SCHEMATIC (HDMI TERMINAL SECTION)

MAIN UNIT SCHEMATIC (CPU SECTION)

MAIN UNIT SCHEMATIC (AUDIO AMPLIFIER SECTION)

MAIN UNIT SCHEMATIC (POWER SUPPLY SECTION)

MAIN UNIT SCHEMATIC (LED BACKLIGHT CONTROL)