EasyManua.ls Logo

LG 47LV3700 User Manual

LG 47LV3700
104 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
LED LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LT12B
MODEL : 47LV3700 47LV3700-DA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
Printed in KoreaP/NO : MFL67007917 (1105-REV00)

Other manuals for LG 47LV3700

Question and Answer IconNeed help?

Do you have a question about the LG 47LV3700 and is the answer not in the manual?

LG 47LV3700 Specifications

General IconGeneral
BrandLG
Model47LV3700
CategoryLCD TV
LanguageEnglish

Summary

Safety Precautions

Important Safety Notice

General notice about safety-related characteristics of parts and potential hazards.

General Guidance

Guidance for servicing, including isolation transformer use and fuse replacement.

Leakage Current Hot Check

Procedure for checking AC leakage current with the set powered on.

Servicing Precautions

General Servicing Precautions

Precautions for unplugging, testing, cleaning, and handling components safely.

Electrostatically Sensitive (ES) Devices

Techniques to reduce component damage from static electricity.

General Soldering Guidelines

Guidelines for soldering, including temperature, solder type, and tip cleaning.

Component Removal Procedures

IC Remove/Replacement

Procedures for removing and replacing integrated circuits.

Small-Signal Discrete Transistor Removal/Replacement

Steps for removing and replacing small-signal transistors.

Power Output, Transistor Device Removal/Replacement

Procedures for removing and replacing power output transistors.

Diode Removal/Replacement

Steps for removing and replacing diodes.

Fuse and Conventional Resistor Removal/Replacement

Procedures for replacing fuses and conventional resistors.

Circuit Board Foil Repair

Techniques for repairing damaged copper patterns on circuit boards.

Specification

Application range

Specifies the range of LCD TV models this manual applies to.

Requirement for Test

Outlines the conditions and requirements for testing components.

Test method

Details the methods for testing performance, safety, and EMC specifications.

General Specification(TV)

Display Screen Device

Lists display screen resolutions for various module sizes.

Aspect Ratio

Specifies the aspect ratio of the display.

LCD Module

Lists different types of LCD modules used in the models.

Operating Environment

Specifies operating temperature and humidity ranges for different module types.

Storage Environment

Specifies storage temperature and humidity ranges for different module types.

Input Voltage

Specifies the input voltage range for the TV.

Power Consumption (LCD(Module) + Backlight(LED))

Details power consumption for various screen sizes and backlight types.

LCD Module Specifications

Chrominance & Luminance

View angle (R/L, U/D)

Specifies view angle performance for various models.

Luminance (W/O PC mode)

Specifies luminance values for different modes and models.

Module Contrast Ratio and CIE Color Coordinates

Response Time and 3D Crosstalk

Component Video Input (Y, CB/PB, CR/PR)

Resolution

Lists supported resolutions, frequencies, and proposed usage for component video input.

HDMI input (DTV)

Resolution

Lists supported resolutions, frequencies, and proposed usage for HDMI input (DTV).

HDMI input (PC)

Resolution

Lists supported resolutions, frequencies, and proposed usage for HDMI input (PC).

HDMI Input(1.4a)

Resolution

Details supported resolutions and 3D modes for HDMI 1.4a input.

HDMI Input(1.3a)

Resolution

Details supported resolutions and 3D modes for HDMI 1.3a input.

ADJUSTMENT INSTRUCTION

Application range

Specifies the application range for this adjustment instruction.

Specification

Outlines necessary conditions and specifications for adjustment procedures.

Adjustment items

Lists PCB and Set assembly adjustment items.

PCB assembly adjustment method

Details methods for PCB assembly adjustments like MAC address and ESN key download.

LAN and Software Download Procedures

Input tool option

EDID D/L method

1st Method

Describes automatic EDID download via Tool Options adjustment.

2nd Method

Details the manual procedure for downloading EDID data.

RS-232C command Method

Explains how to use RS-232C commands for EDID download.

EDID data

Provides EDID data tables for Non-3D models.

ADC Calibration : Comp 480i/Comp 1080p/RGB

ADC Calibration : Internal Auto ADC

Explains auto ADC calibration and when it's not needed.

ADC Calibration - Manual

Details manual ADC calibration, including required equipment and process.

SET assembly adjustment method

Input Area-Option

Explains how to set input area options and related equipment.

Adjustment of White Balance

Covers procedures for adjusting white balance, both automatic and manual.

Intelligent Sensor Inspection Guide

Set Assembly Inspection Procedures

LAN Inspection

Steps for connecting LAN and confirming network settings.

WIDEVINE Key Inspection

How to confirm Key input data in the IN START menu.

Model name & Serial number D/L

Notice and methods for downloading model name and serial number.

Wi-Fi MAC ADDRESS CHECK

Procedure for checking the Wi-Fi MAC address using RS232.

Additional Set Assembly Tests

Local Dimming Inspection

Inspection procedures for local dimming on Edge LED and IOP LED models.

Motion Remote controller Inspection

Equipment and process for inspecting motion remote controllers.

3D Function test

Equipment and process for testing 3D function.

EXPLODED VIEW

IMPORTANT SAFETY NOTICE

Safety notice regarding special safety-related parts.

CI CONTROL INTERFACE

CI TS OUTPUT

Details related to CI TS output signals.

CI TS INPUT

Details related to CI TS input signals.

CI POWER ENABLE CONTROL

Control signals for CI power enablement.

NAND P/N Data

Data related to NAND part numbers.

S,FP_CI POWER

Power signals for S,FP_CI.

CI ENTRY

Entry points or modes related to CI.

H/NIM & F/NIM & T/C/S2 Combo Tuner

DVB-S2 LNB Part Allegro

Full Scart(18 Pin Gender)

AUD_OUT >> EU/CHINA_HOTEL_OPT

Audio output settings for EU/China Hotel Option.

[SCART AUDIO MUTE]

Configuration for SCART audio muting.

[SCART PIN 8]

Information related to SCART Pin 8.

SMD GASKET

SMD GASKET (UNDER THE TUNER)

POWER B/D

2 types of LED

Edge Type w/ Local Dimming

Describes Edge LED type with local dimming features and models.

Model

Lists models and block details for Edge LED type.

2 types of LED - ALEF

ALEF Type Local Dimming

Describes ALEF LED type with local dimming features and models.

Model

Lists models and block details for ALEF LED type.

Main PCB for Broadband

BCM35230 Block Diagram

Jack Interface

Appendix. Block Diagram for Edge/ALEF Backlight

Interconnection - 1

Interconnection - 2

Interconnection - 3

Interconnection – sub PCB( LW9500 Series )

Interconnection – sub PCB( LV5500 Series )

Interconnection – sub PCB( 72LZ9700)

Standard Repair Process

A. Video error - No video/Normal audio

Troubleshooting steps for no video or normal audio issues.

Standard Repair Process

A. Video error - No video/ No audio

Troubleshooting steps for no video or no audio issues.

Standard Repair Process

A. Picture Problem

Troubleshooting steps for picture issues like breaking or freezing.

Standard Repair Process

A. Video error - Color error

Troubleshooting steps for color errors in video output.

Standard Repair Process

A. Video error - Vertical/Horizontal bar, residual image, light spot

Troubleshooting for vertical/horizontal bars, residual image, or light spots.

Standard Repair Process

B. Power error - No power

Troubleshooting steps for the TV not turning on or having no power.

Standard Repair Process

B. Power error - Off when on, off while viewing, power auto on/off

Troubleshooting for unexpected power-off conditions.

Standard Repair Process

C. Audio error - No audio/Normal video

Troubleshooting steps for missing audio or normal video.

Standard Repair Process

C. Audio error - Wrecked audio/discontinuation/noise

Troubleshooting for distorted, discontinuous, or noisy audio.

Standard Repair Process

D. General Function Problem - Remote control & Local switch checking

Troubleshooting remote control and local switch operation errors.

Standard Repair Process

D. Function error - External device recognition error

Troubleshooting for external devices not being recognized.

Standard Repair Process

E. Noise

Diagnosing and resolving circuit noise or mechanical noise issues.

Standard Repair Process

F. Exterior defect

Procedures for addressing exterior damage like cabinet or stand issues.

Standard Repair Process Detail Technical Manual

A. Video error_No video/Normal audio - Check LCD back light

Steps to check LCD backlight for no video/normal audio issues.

Standard Repair Process Detail Technical Manual

A. Video error_No video/Normal audio - LED driver B+ 24V measuring method

Method for measuring LED driver B+ 24V for no video/normal audio.

Standard Repair Process Detail Technical Manual

A. Video error_No video/Normal audio - Check White Balance value

Procedure to check and adjust White Balance values for color temperature.

Standard Repair Process Detail Technical Manual

A. Video error_No video/ Audio - Power Board voltage measuring method

Method for measuring Power Board voltages for no video/audio errors.

Standard Repair Process Detail Technical Manual

A. Video error_Video error, video lag/stop - TUNER input signal strength checking method

Method to check tuner input signal strength for video lag or stop.

Standard Repair Process Detail Technical Manual

Standard Repair Process Detail Technical Manual

A. Video error_Vertical/Horizontal bar, residual image, light spot - LCD TV connection diagram (1)

Diagram showing external input connections and their descriptions.

Standard Repair Process Detail Technical Manual

A. Video error_Video error, video lag/stop - TUNER checking part

Procedure for checking the tuner part for video errors.

Standard Repair Process Detail Technical Manual

A. Video error_Color error - Check Link Cable (LVDS) reconnection condition

Procedure to check LVDS link cable reconnection for color errors.

Standard Repair Process Detail Technical Manual

A. Video error_Color error - Adjustment Test pattern - ADJ Key

How to use the ADJ Key and test patterns for color error diagnosis.

Appendix : Exchange T-Con Board (1)

Appendix : Exchange T-Con Board (2)

Appendix : Exchange PSU(LED driver)

Appendix : Exchange the Module (1)

Appendix : Exchange the Module (2)

Standard Repair Process Detail Technical Manual

B. Power error_No power - Check front display LED

How to check the front display LED for no power errors.

Standard Repair Process Detail Technical Manual

B. Power error _No power - Check power input voltage and ST-BY 5V

How to check power input voltage and ST-BY 5V for no power errors.

Standard Repair Process Detail Technical Manual

B. Power error _No power - Checking method when power is ON

Method to check the power status when the TV is ON.

Standard Repair Process Detail Technical Manual

B. Power error _Off when on, off whiling viewing - POWER OFF MODE checking method

How to check the POWER OFF MODE for unexpected power-off issues.

Standard Repair Process Detail Technical Manual

C. Audio error_No audio/Normal video - Checking method in menu when there is no audio

How to check audio settings in the menu when there is no sound.

Standard Repair Process Detail Technical Manual

Standard Repair Process Detail Technical Manual

Standard Repair Process Detail Technical Manual

D. VCOM Adjustment - Sequence of the Vcom adjustment

Steps to adjust VCOM values for optimal display performance.

Related product manuals