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LG Lafinion 82W User Manual

LG Lafinion 82W
42 pages
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COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MC-035B
MODEL: Lafinion 82W
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
Feb.,2004
Printed in KoreaP/NO : 3828VD0155F
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LG Lafinion 82W Specifications

General IconGeneral
BrandLG
ModelLafinion 82W
CategoryTV
LanguageEnglish

Summary

Safety Precautions

Important Safety Notices

Crucial warnings regarding safety parts, shock, fire, and hazards.

General Handling and Safety Guidance

Guidelines for using isolation transformers and handling specific components.

X-Ray Radiation Warning

Information on X-ray sources and necessary protection measures.

AC Leakage Current Checks

Procedures for performing cold and hot AC leakage current checks.

Product Specifications

General Specifications Overview

Details on broadcast methods, AV system, channels, voltage, and screen.

Feature and Functionality List

Lists supported features like Teletext, various inputs, stereo modes, etc.

External Interface Regulations

Specifies input/output levels, frequency response, and signal-to-noise ratios.

Remote Control Descriptions

Core Remote Functions

Explains SSM, PSM, ARC, VCR/DVD, and PIP button functions.

Operational Control Functions

Details on Power, Volume, Mute, Menu, Size, Still, Position, Scan, Reset controls.

Additional Remote Control Features

Advanced Picture and System Controls

Covers Main Still, I/II, Sleep, Eye, Teletext, TV/VCR/DVD, Turbo functions.

Remote Control Charging Mechanism

Instructions for charging the remote using its internal generator.

Front and Side Panel Controls

Power, LED Indicators, and Buttons

Describes the main power switch, LED displays, MENU, and OK buttons.

External Connection Sockets

Details on headphone, AV, S-VIDEO, and PC input sockets.

Adjustment Instructions

General Safety Precautions for Adjustment

Safety measures including transformer use and appliance requirements.

DVCO and Focus Adjustment Procedures

Steps for DVCO adjustment and fine-tuning focus using FBT volumes.

Purity and Convergence Adjustment Preparation

Initial steps for purity and convergence, including degaussing and magnet placement.

Advanced Adjustment Procedures

Convergence Adjustment Details

Fine-tuning convergence using magnets and tabs for color line alignment.

Screen Voltage and White Balance Adjustment

Procedures for adjusting screen voltage and white balance for optimal picture.

Deflection Data Adjustment Guide

Adjusting various deflection parameters like linearity, amplitude, and shift.

Further Adjustment and Option Settings

Deflection Geometry Adjustments

Explains EPP, UC, LC, A-BOW, A-ANG, V-SCR for picture geometry correction.

Option Adjustment Preparation Steps

How to prepare for model-specific option adjustments using the remote control.

Option Adjustment Methods and Data

Option 1, 2, and 3 Adjustment Details

Step-by-step guidance for setting OPTION 1, 2, and 3 functions.

Pre-scaler and DBS Setting Values

Lists setting values for MSP3411 pre-scaler and DBS version.

Option Function Tables

Option 4 Language and TXT LAN Settings

Configuration options for language and Teletext language settings.

Option 5 Contrast and Auto Adjustments

Settings for dynamic contrast, auto contrast, and auto luminance control.

IIC Data Setting Configuration

Model IIC Data Setup

Configuring OFFSET DATA, SUB ADD, START BIT, and STOP BIT for IIC communication.

EEPROM and Slave Address Configuration

Setting EEPROM SUB ADD, SLAVE ADDRESS, and SUB BRIGHT CONTOR DATA.

Troubleshooting Guide

No Power - SMPS Working Scenario

Troubleshooting steps when the TV has no power but the SMPS is active.

No Power - SMPS Not Working Scenario

Troubleshooting steps for no power when the SMPS is not functioning.

Troubleshooting: Picture Issues

No Raster or Picture (H-OUT OK)

Diagnosing issues when the horizontal output is fine but no picture is displayed.

Troubleshooting: Sound and Picture Quality

No Sound with Picture OK

Steps to troubleshoot no audio output while the picture is normal.

Video Modulator (VM) Malfunctions

Diagnosing and fixing problems with the VM circuit.

Pin Cushion Distortion Correction

Procedures to resolve geometric distortion known as pin cushion.

Troubleshooting: Reception and Audio

Headphone Jack Audio Issues

Troubleshooting no sound from the headphone jack.

Channel Reception Problems (Main)

Steps to resolve issues with receiving main TV channels.

Channel Reception Problems (NTSC/SECAM)

Diagnosing reception issues for NTSC-M and SECAM-L standards.

Troubleshooting: Special Features

Teletext Functionality Issues

Steps to diagnose and fix problems with the teletext feature.

Vertical Deflection Failure

Troubleshooting steps for the absence of vertical picture deflection.

DVD/Component Picture Input Issues

Diagnosing problems with picture input from DVD or component sources.

Printed Circuit Board Layouts

Main PCB Diagram

Visual representation of the main printed circuit board with component placement.

Component Location Guides

Main Board Component Mapping

Detailed list of component locations and references on the main PCB.

Micom and Control Board Diagrams

Micom Board Layout (Top and Bottom)

Diagrams showing the top and bottom views of the Micom PCB.

Control Board Schematic

Schematic of the control circuit board for the remote.

100Hz Board Diagrams

100Hz PCB Layout Views

Top and bottom views of the 100Hz printed circuit board.

Various Board Schematics

Sound Board Circuit Diagram

Schematic of the sound processing circuit board.

CPT, Power, and Side A/V Board Layouts

Layouts for CRT, Power supply, and Side A/V boards.

System Block Diagram

Main System Interconnection Overview

Overview of how major functional blocks are interconnected.

Progressive Scan Circuit Diagram

Key ICs for Progressive Scan Processing

Shows VSP9427, CXA2069Q, LGDT1000B ICs and their connections.

Micom Board Circuit Diagram

Micom IC and Memory Connections

Details connections of MICOM ICs, SDRAM, and EPROM for control.

Exploded View of TV Assembly

TV Component Assembly Diagram

Visual breakdown of the TV's components and their assembly.

Exploded View Parts List

Detailed Component Identification

List of part numbers and descriptions for the exploded view.

Replacement Parts List

IC and Transistor Part Numbers

Comprehensive list of Integrated Circuits (ICs) and Transistors with part numbers.

Replacement Parts: Diodes and Capacitors

Diode Part Number Listings

List of diodes with their part numbers and specifications.

Capacitor Part Number Listings

List of capacitors with their part numbers and specifications.

Replacement Parts: Capacitors (Part 2)

Capacitor Part Number Listings (Continued)

Continues the list of capacitors with their part numbers and specifications.

Replacement Parts: Capacitors (Part 3)

Capacitor Part Number Listings (Continued)

Continues the list of capacitors with their part numbers and specifications.

Replacement Parts: Capacitors (Part 4)

Capacitor Part Number Listings (Continued)

Continues the list of capacitors with their part numbers and specifications.

Replacement Parts: Coils, Transformers, Resistors

Coil and Transformer Part Numbers

List of coils and transformers with their part numbers.

Resistor Part Number Listings

List of resistors with their part numbers and specifications.

Replacement Parts: Resistors (Part 2)

Resistor Part Number Listings (Continued)

Continues the list of resistors with their part numbers and specifications.

Replacement Parts: Resistors (Part 3)

Resistor Part Number Listings (Continued)

Continues the list of resistors with their part numbers and specifications.

Replacement Parts: Switches and Miscellaneous

Resistor Part Number Listings (Continued)

Continues the list of resistors with their part numbers and specifications.

Switches, Spark Gaps, and Other Parts

Lists switches, spark gaps, filters, accessories, and miscellaneous items.

Circuit Diagrams for MC-035A Chassis

Micom Board Circuit Diagram

Schematic for the Micom control board.

CPT/VM and Key Board Diagrams

Diagrams for CRT/VM board and FZ40 key board.

Main, SMPS, and Deflection Board Schematics

Schematics for the main, SMPS, and deflection boards.

Side AV and Pin Cushion Compensation Diagrams

Diagrams for Side AV and pin cushion compensation circuits.

Progressive Scan Circuit Diagram (PAL)

Key ICs for Progressive Scan Processing

Shows VSP9427, CXA2069Q, LGDT1000B ICs and their connections.

Component and VGA Interface Connections

Details connections for component inputs, VGA, and other interface signals.

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