Sharp LC-19SB14U User Manual

In the interests of user-safety (Required by safety regulations in some countries) the set should be re-
stored to its original condition and only parts identical to those specified should be used.
MODEL
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LCD COLOR TELEVISION
CONTENTS
ﾈ
IMPORTANT SERVICE SAFETY PRECAUTION ..........................................................................................2
ﾈ
SPECIFICATIONS .........................................................................................................................................5
ﾈ
OPERATION MANUAL ..................................................................................................................................7
ﾈ
DIMENSIONS ..............................................................................................................................................11
ﾈ
REMOVING OF MAJOR PARTS .................................................................................................................13
ﾈ
ADJUSTING PROCEDURE OF EACH SECTION ......................................................................................18
ﾈ
PUBLIC MODE SETTING PROCEDURE ...................................................................................................43
ﾈ
TROUBLESHOOTING TABLE .....................................................................................................................48
ﾈ
MAJOR IC INFORMATIONS .......................................................................................................................56
ﾈ
BLOCK DIAGRAM .......................................................................................................................................58
ﾈ
OVERALL WIRING DIAGRAM ....................................................................................................................60
ﾈ
DESCRIPTION OF SCHEMATIC DIAGRAM ..............................................................................................62
ﾈ
SCHEMATIC DIAGRAM
RC/LED Unit ..............................................................................................................................................63
MAIN Unit ..................................................................................................................................................64
SUB Unit ....................................................................................................................................................82
POWER_INVERTER Unit ..........................................................................................................................86
KEY Unit ....................................................................................................................................................88
ﾈ
PRINTED WIRING BOARD ASSEMBLIES .................................................................................................89
ﾈ
REPLACEMENT PARTS LIST ...................................................................................................................109
ﾈ
PACKING OF THE SET .............................................................................................................................126
Page
N87B1LC19K24U
LC-19SK24U
LC-19SK24U-W
LC-19SB24U
LC-19SB24U-W
LC-19SB14U
LC-19D44U
19K24U P1-17.indd 1 2007-9-4 10:06:54

Sharp LC-19SB14U Specifications

General

Screen Size	19 inches
Display Technology	LCD
Resolution	1366 x 768
Aspect Ratio	16:9
Brightness	300 cd/m²
Contrast Ratio	1000:1
Response Time	5 ms
HDMI Ports	1
USB Ports	0
Input Ports	Composite
Power Consumption	35W
Viewing Angle	170° (H) / 160° (V)

Summary

Important Service Safety Precautions

Safety Warnings and Procedures

Covers general warnings, return checks, and safety notices.

Operation Manual

Remote Control Unit Functions

Basic Adjustment Settings

TV/Input 1/2 Menu Settings

HDMI/PC Input Menu Settings

Removing Major Parts

Part Removal Procedures (LC-19SK24U/W)

Step-by-step guide for disassembling major parts of specific models.

Removing Major Parts (LC-19D44U)

Part Removal Steps for LC-19D44U

Step-by-step guide for disassembling major parts of the LC-19D44U model.

Removing Major Parts (LC-19SB Series)

Part Removal Steps for LC-19SB Series

Step-by-step guide for disassembling major parts of LC-19SB series models.

PWB Servicing Precautions

Adjustment Procedure of Each Section

PWB/IC Replacement and Equipment Notes

Notes and special equipment required after PWB or IC replacement.

Microprocessor Software Upgrade

Sub Microprocessor Software Upgrade

Procedure for upgrading the sub microprocessor software version.

Main Microprocessor Software Upgrade

Main Microprocessor Software Upgrade Procedure

Procedure for upgrading the main microprocessor software version.

Adjustment Procedures

Accessing and Operating Adjustment Mode

How to access and navigate the adjustment process mode.

AD Transform Level Adjustment

Procedure for adjusting AD transform level for various input signals.

Temperature and Bias Adjustments

Temperature (TEMP) Adjustment

Common Bias Adjustment

Factory Settings and Software Version

Making Factory Settings

Steps to perform factory settings using the adjustment remote controller.

Public Mode Setting Procedure

Starting Public Mode

Methods to start the public mode setup screen and enter the password.

Public Mode Settings and Exit

Exiting Public Mode

Public Mode Menu Options

On-Screen Setting Items

Display and Button Settings

Troubleshooting: Power Supply Issues

No Power or Front LED Issues

Troubleshooting steps for no power or front LED not lighting up.

Troubleshooting: Audio Output Issues

No Audio Output (UHF/VHF Reception)

Diagnostic steps for lack of audio during UHF/VHF reception.

Troubleshooting: External Input Audio

No Audio Output from External Inputs

Troubleshooting for no audio from HDMI, PC, Input 1, and Input 2.

Troubleshooting: Video Output (INPUT-1)

No Video Output from Component Input (INPUT-1)

Diagnostic steps for no video output from component input.

Troubleshooting: Video Output (INPUT-2)

No Video Output from Composite/S-Video (INPUT-2)

Troubleshooting for no video from composite or S-video inputs.

Troubleshooting: Video Output (Analog)

No Video Output During Analog Reception

Diagnostic steps for no video during analog broadcast reception.

Troubleshooting: Video Output (HDMI)

No Video Output from HDMI Input (INPUT3)

Troubleshooting for no video output from HDMI input.

Troubleshooting: Video Output (PC)

No Video Output from PC Input (INPUT4)

Diagnostic steps for no video output from PC input.

Major IC Information

Schematic Diagram Description

Schematic Diagrams

R/C LED Unit Schematic

Main Unit Schematic Diagrams

Main Unit - Pages 1-9

Sub Unit Schematic Diagrams

Sub Unit - Pages 1-2

Power Inverter Unit Schematic

Power Inverter Unit Schematic Diagram

Key Unit Schematic

Key Unit Schematic Diagram

Parts List

Printed Wiring Board Assemblies

List of PWB part numbers, excluding those for replacement.

LCD Panel Parts

Part number for the LCD panel unit assembly.

Main Unit Integrated Circuits

List of integrated circuits for the main unit.

Main Unit Transistors

List of transistors for the main unit.

Main Unit Diodes

Parts List (Power Inverter)

Power Inverter Unit Parts

List of parts for the power inverter unit.

Main Unit Resistors

Main Unit Miscellaneous Parts

Parts List (Main Unit Cont.)

Main Unit ICs, Transistors, Diodes

Main Unit Capacitors and Coils

Packaged Circuits and Tuner Parts

Parts List (Sub Unit)

Sub Unit Resistors and Ferrite Beads

Sub Unit Miscellaneous and R/C LED Parts

Sub Unit Components (ICs, Transistors, Diodes)

Sub Unit Coils

Cabinet and Mechanical Parts (LC-19SK24U/W)

Cabinet and Mechanical Parts (LC-19SB Series)

Cabinet and Mechanical Parts (LC-19D44U)