EasyManua.ls Logo

LG 14FU7RB Service Manual

LG 14FU7RB
20 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MC059D
MODEL : 14FU7RB
MODEL : 14FU7RB-T2
North/ Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Feb., 2010
Printed in ChinaP/NO : MFL40183504
Internal Use Only
Question and Answer IconNeed help?

Do you have a question about the LG 14FU7RB and is the answer not in the manual?

LG 14FU7RB Specifications

General IconGeneral
BrandLG
Model14FU7RB
CategoryTV
LanguageEnglish

Summary

SAFETY PRECAUTIONS

General Guidance

Provides advice on using isolation transformers, replacing fuses, and handling the picture tube.

X-RAY Radiation

Warns about X-ray radiation sources and precautions for replacement.

Leakage Current Checks

Details cold and hot checks for AC leakage current to prevent shock hazards.

SPECIFICATIONS

Scope

Defines the scope of the specification for the MC-059D CHASSIS Colour TV.

Test Conditions and Power Voltage

Lists general test conditions and power voltage requirements for testing.

General Specifications

Details various general specifications like receiving system, available channels, input voltage, etc.

Features and Function

Audio and Input Features

Describes audio input options and remote/local key functions.

Station and Program Management

Covers station tuning, program search, storage, and editing.

Picture Settings

Explains picture adjustment settings like PSM and CSM for contrast, brightness, etc.

Time and Special Functions

Details time settings (clock, sleep) and special functions like language and child lock.

ADJUSTMENT

Scope, Notes, and AGC Voltage

Covers adjustment scope, notes, and the procedure for AGC voltage adjustment.

Screen Voltage and Purity/Convergence Prep

Explains screen voltage adjustment and preparation for purity/convergence.

Purity Adjustment

Details the steps for purity adjustment using red raster and degaussing coil.

Advanced Adjustments

Static Convergence Adjustment

Details the process of adjusting static convergence using 4-pole and 6-pole magnets.

Dynamic Convergence Adjustment

Explains the adjustment process for dynamic convergence (Y-axis and X-axis).

Adjustment Block Diagram

Shows the sequence of adjustment steps for the CPT.

White Balance Adjustment

Outlines the necessary instruments and preparation for white balance adjustment.

Calibration and Data Settings

Automatic and Manual White Balance

Describes automatic and manual procedures for adjusting white balance.

Focus Voltage Adjustment

Explains how to adjust focus voltage after the TV has been operating.

Deflection Data Adjustment

Covers manual adjustment procedures for deflection settings.

EEPROM Option Table

Presents data for automatic adjustment preparation, including video IC and EEPROM settings.

IIC Bus Adjustment Parameters

IIC Bus Adjustment Data Table

Lists various IIC bus adjustment parameters and their initial settings.

Detailed IIC Bus Adjustments

IIC Bus Adjustment Data Table (Continued)

Continues the list of IIC bus adjustment parameters and their settings.

TROUBLE SHOOTING

TV Functional Blocks

Provides a functional block diagram for troubleshooting TV operations.

Tuner and IF Section Issues

Details troubleshooting for the tuner and IF section, including signal paths.

Video Processing Troubleshooting

Illustrates the video processing block and common troubleshooting points.

Power Supply Troubleshooting

SMPS Primary Section Issues

Outlines troubleshooting for the SMPS primary section, including power supply issues.

SMPS Secondary Section Issues

Details troubleshooting for the SMPS secondary section and its various voltage outputs.

Vertical and Horizontal Issues

Vertical Section Troubleshooting

Describes troubleshooting steps for vertical circuit issues and protection circuits.

Horizontal Section Troubleshooting

Covers troubleshooting for horizontal deflection, drive, and output sections.

Audio and CPT Drive Troubleshooting

Sound Processing Troubleshooting

Explains the sound processing path and common audio troubleshooting.

CPT Drive Section Issues

Details the CPT drive circuit and potential issues like RGB signal loss.

BLOCK DIAGRAM

SMPS Transconnections

Shows the power supply unit connections and voltage outputs.

SUSOC Processing Unit

Represents the main processing unit with various input/output signals.

Tuner and IF Signal Flow

Illustrates the tuner and IF section inputs and outputs.

Vertical Amplifier Circuit

Depicts the vertical amplifier circuit.

Flyback Transformer (FBT)

Shows the flyback transformer and its connections.

Cathode Ray Tube (CPT)

Represents the Cathode Ray Tube assembly.

Related product manuals