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LG 32LC51 Service Manual

LG 32LC51
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 Specifications

General IconGeneral
Audio system7w+7w
Number of speakers2
I/O portsPAL I/II, PAL/SECAM BG/DK/NTSC
Display diagonal32 \
Display brightness500 cd/m²
Display resolution1366 x 768 pixels
Display technologyLCD
Native aspect ratio16:9
Contrast ratio (typical)5000:1
SCART ports quantity1
Product colorBlack
Power consumption (standby)1 W
Power consumption (typical)150 W
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)248.7 mm
Width (with stand)806.8 mm
Height (with stand)605.6 mm
Weight (with stand)13100 g
Depth (without stand)79 mm
Width (without stand)806.5 mm
Height (without stand)552.6 mm
Weight (without stand)10700 g

Summary

Safety Precautions

Important Safety Notice

Critical safety warnings and essential replacement part guidelines for preventing hazards.

General Servicing Guidance

Guidelines for safe servicing, including isolation transformers and component handling.

AC Leakage Current Checks

Procedures for performing cold and hot checks to ensure electrical safety.

Servicing Precautions

General Servicing Precautions

Standard precautions for electrical safety and component handling during servicing.

Handling Electrostatically Sensitive Devices

Techniques to prevent damage to sensitive electronic components from static discharge.

Soldering Guidelines

Best practices for soldering, including tool selection and techniques for circuit board repair.

Component Replacement Procedures

IC, Transistor, Diode, Fuse/Resistor Replacement

Detailed steps for replacing various electronic components on the circuit board.

Circuit Board Foil Repair

Techniques for repairing damaged copper traces on printed circuit boards using jumper wires.

Product Specifications

Application Range, Test Requirements, and Methods

Defines the scope of specifications and the conditions and methods for testing.

General LCD Module Specifications

Detailed technical specifications for the LCD modules used in the product.

Model Specifications

EU Model, Video, and RGB Input Specs

Specifications for EU models, component video, and analog RGB PC inputs.

HDMI Input Specifications

Adjustment Instructions

Adjustment Scope, Items, and PCB Method

Defines adjustment range, items, and the method for PCB assembly adjustments.

Software Download Procedures

Download Method 1: PCB Assembly

Step-by-step guide for downloading software to the PCB assembly.

Software Download Method 2

AV Plate Assembly Download

Step-by-step guide for downloading software to the AV Plate assembly.

Software Download Method 3

SET Assembly Download

Step-by-step guide for downloading software to the SET assembly.

Channel Memory Download

EDID and DDC Configuration

EDID/DDC Download Caution and Data Sets

Notes on cable use, EDID data format, and analog/HDMI data structures.

EDID Options and Adjustment Sequence

Details on specific EDID options and the sequence for performing EDID adjustments.

White Balance Adjustment

Manual White Balance Adjustment

Step-by-step guide for manual white balance adjustment using a color analyzer.

Default Values, Internal Tests, and Sound Specs

Displays default WB values, outlines internal tests, and lists sound specifications.

Troubleshooting - No Power

Troubleshooting - Protect Mode

Troubleshooting - Raster and RF Display

No Raster Issues

Diagnosing and resolving issues related to no raster or display absence.

Unusual Display in RF Mode

Troubleshooting unusual display patterns when using RF input.

Troubleshooting - AV and S-Video Display

Unusual Display in Rear AV Mode

Troubleshooting unusual display patterns when using rear AV input.

Unusual Display in Side AV and S-Video Modes

Troubleshooting unusual display patterns for Side AV and S-Video inputs.

Troubleshooting - SCART Display

Unusual Display in SCART 1, RGB, and SCART 2 Modes

Troubleshooting unusual display patterns for SCART 1, RGB, and SCART 2 inputs.

Troubleshooting - Component and RGB Display

Unusual Display in Component and RGB Modes

Troubleshooting unusual display patterns for Component and RGB inputs.

Troubleshooting - No Sound

Troubleshooting - HDMI Issues

Block Diagram

Exploded View

Exploded View Diagram

Visual illustration showing the physical assembly of the TV unit and its parts.

Exploded View Parts List

A detailed list of parts corresponding to the exploded view diagram, including part numbers.

Replacement Parts List

System Connectors, Switches, and Accessories

System Connectors and Jacks

Identification and specifications for various input/output connectors and jacks.

Switches, Other Components, and Accessories

Details on switches, other components, and included accessories.

Schematic Diagrams

Input Signals and Tuner Schematics

Circuit diagrams for SCART, Analog, Digital inputs, and the Main Tuner.

Audio, Power, Video Decoder, LVDS, and Sensors Schematics

Circuit diagrams for major functional blocks including audio, power, video, LVDS, and sensors.

VCTP Scaler Schematic

Circuit diagram detailing the VCTP Scaler chip and its connections.

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