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LG 32LC51-ZA User Manual

LG 32LC51-ZA
39 pages
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R
LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LP78A
MODEL : 32LC7R 32LC7R-ZA
MODEL : 32LC51 32LC51-ZA
MODEL : 32LC52 32LC52-ZC
website:http://biz.LGservice.com
www.freeservicemanuals.info
1/12/2013
Worldwide electronic heritage manuals
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LG 32LC51-ZA Specifications

General IconGeneral
Screen Size32 inches
Display TypeLCD
Resolution1366 x 768
Aspect Ratio16:9
Contrast Ratio5000:1
Brightness500 cd/m²
Response Time8 ms
Viewing Angle178°/178°
Input PortsHDMI, Component, Composite, RGB

Summary

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Essential replacement of special safety parts to prevent hazards.

General Guidance

General recommendations for safe servicing procedures.

Leakage Current Cold Check

Procedure to check AC leakage current at cold state.

Leakage Current Hot Check

Procedure to check AC leakage current at hot state.

SERVICING PRECAUTIONS

General Servicing Precautions

General guidelines for safe servicing practices and component handling.

Electrostatically Sensitive Devices (ES)

Precautions and techniques for handling static-sensitive components.

General Soldering Guidelines

Guidelines for proper soldering techniques and equipment.

Component Removal and Replacement

Procedures for removing and replacing various electronic components.

Circuit Board Foil Repair

Guidelines for repairing damaged copper traces on circuit boards.

SPECIFICATION

Specification Application Range

Specifies the range of application for this manual.

Specification Test Requirements

Details the conditions required for testing components.

Specification Test Method

Outlines the methods for performance and specification testing.

General LCD Module Specification

Provides general specifications for the LCD module.

Model Specification (EU)

Specifies model details relevant to the EU market.

Component Video Input Specification

Details supported resolutions and frequencies for component video input.

RGB Analog PC Input Specification

Lists supported resolutions and frequencies for RGB analog PC input.

HDMI Input (DTV) Specification

Details supported resolutions and frequencies for HDMI digital TV input.

ADJUSTMENT INSTRUCTION

Adjustment Application Range

Specifies the scope of application for adjustment instructions.

Adjustment Specification

Lists general specifications relevant to the adjustment process.

Adjustment Items

Lists the specific items to be adjusted.

PCB Assembly Adjustment Method

Method for PCB assembly adjustment using download program.

Download Program Installation

Steps for installing the download program and drivers.

S/W Program Download (PCB Ass'y)

Method for downloading software to the PCB assembly.

S/W Program Download (AV Plate Ass'y)

Alternative method for software download using AV Plate Assembly.

S/W Program Download (SET)

Software download method for the SET assembly.

Channel Memory Download

Procedure for downloading channel memory data.

Tool Option Area Option Change

Changing tool and area options before PCB check.

Color Carrier Adjustment

Process for adjusting color carrier during inspection.

EDID / DDC Download

Sequence of Adjustment

Steps for adjusting EDID data for analog-RGB.

White Balance Adjustment

Required Equipment

Lists necessary equipment for white balance adjustment.

Connection Diagram (Automatic)

Diagram for connecting equipment for automatic white balance adjustment.

Manual White Balance Adjustment

Manual adjustment procedure for white balance.

Shipping Option Data Input

Procedure to input shipping option data.

Default Adjustment Values

Default values for adjustment parameters.

Internal Press Test

Internal tests performed during adjustment.

Sound Specification

Specifications related to sound output.

TROUBLESHOOTING

No Power Troubleshooting

Troubleshooting steps for "No power" symptom.

Protect Mode Troubleshooting

Troubleshooting steps for "Protect mode" symptom.

No Raster Troubleshooting

Troubleshooting steps for "No Raster" symptom.

Unusual Display in RF Mode

Troubleshooting for unusual display in RF mode.

Unusual Display in Rear AV Mode

Troubleshooting for unusual display in rear AV mode.

Unusual Display in Side AV Mode

Troubleshooting for unusual display in Side AV mode.

Unusual Display in Side S-Video Mode

Troubleshooting for unusual display in Side S-Video mode.

Unusual Display in SCART 1 Mode

Troubleshooting for unusual display in SCART 1 mode.

Unusual Display in SCART 1 RGB Mode

Troubleshooting for unusual display in SCART 1 RGB mode.

Unusual Display in SCART 2 Mode

Troubleshooting for unusual display in SCART 2 mode.

Unusual Display in Component 1 Mode

Troubleshooting for unusual display in component 1 mode.

Unusual Display in Component 2 Mode

Troubleshooting for unusual display in component 2 mode.

Unusual Display in RGB Mode

Troubleshooting for unusual display in RGB mode.

No Sound Troubleshooting

Troubleshooting steps for "No Sound" symptom.

HDMI Mode Issues Troubleshooting

Troubleshooting for issues related to HDMI mode.

BLOCK DIAGRAM

EXPLODED VIEW

EXPLODED VIEW PARTS LIST

REPLACEMENT PARTS LIST

SCHEMATIC DIAGRAMS

SCART Inputs Schematic

Diagram for SCART input signals.

Analog Inputs & UART Schematic

Diagram for analog inputs and UART communication.

Digital Input Schematic

Diagram for digital input signals, including HDMI.

Main Tuner Schematic

Diagram for the main tuner section.

Audio Section Schematic

Schematic for the audio amplifier and related circuits.

Panel LVDS Schematic

Schematic for the panel LVDS interface.

Power Supply Schematic

Schematic for the power supply section.

Temp & Fan Sensors Schematic

Schematic for temperature and fan sensors.

Video Decoder Schematic

Schematic for the video decoder IC.

VCTP Scaler

Scaler Diagram

Diagram of the scaler component.

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