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LG 32LS3400-DA User Manual

LG 32LS3400-DA
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Printed in KoreaP/NO : MFL67362816 (1203-REV00)
CHASSIS : LT21C
MODEL : 32LS3400 32LS3400-DA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED LCD TV
SERVICE MANUAL
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
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LG 32LS3400-DA Specifications

General IconGeneral
Screen Size32 inches
Display TypeLED
Resolution1366 x 768
HDMI Ports2
USB Ports1
Refresh Rate60Hz
Aspect Ratio16:9
Audio Output10W x 2

Summary

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Key safety guidelines and warnings for service personnel.

General Guidance

General recommendations for safe servicing procedures and component handling.

Leakage Current Hot Check

Procedure for checking AC leakage current for safety.

SPECIFICATION

Application Range

Defines the scope of application for this service manual.

Test Condition

Specifies the environmental and power conditions for testing.

Test Method

Outlines the procedures and standards for product testing.

GENERAL SPECIFICATION

Screen Size

Lists various screen sizes supported by the chassis.

Aspect Ratio

Specifies the aspect ratio of the display.

LCD Module

Details the LCD modules used in the TV models.

Operating Environment

Conditions for operating the TV.

Storage Environment

Conditions for storing the TV.

Input Voltage

Specifies the acceptable input voltage range.

Power Consumption

Details the power consumption for different models.

LCD Module Dimensions

Provides physical dimensions for LCD modules.

EXTERNAL INPUT SUPPORT FORMAT

Component Input Formats

Lists supported Component (Y, Pb, Pr) input signal formats.

RGB Input Formats

Details supported RGB input signal formats and EDID data.

HDMI EDID Data (PC Mode)

HDMI EDID data for PC input modes.

HDMI EDID Data (DTV Mode)

HDMI EDID data for DTV input modes.

3D Mode HDMI Support

Lists HDMI input formats supported for 3D display.

ADJUSTMENT INSTRUCTION

Application

Specifies the scope of the adjustment instructions.

Designation

Details the meaning of designations used in adjustments.

Main PCB Check Process

Procedure for checking and verifying the main PCB.

APC Process

Steps for Automatic Program Control after manual insertion.

Boot File Download

Instructions for downloading the boot file.

USB Download Procedure

Steps for downloading software updates via USB.

Tool Option Adjustment

How to adjust tool options after software download.

ADC Process

Steps for Analog-to-Digital Converter calibration.

Function Check

Procedures for verifying TV functions.

MAC Address Management

Procedures for managing MAC addresses.

LAN Inspection

Procedures for inspecting LAN connectivity.

LAN Port Inspection (Ping Test)

Testing LAN port connectivity using ping.

Model Name and Serial Number Download

Procedures for downloading model and serial number information.

TOTAL ASSEMBLY LINE PROCESS

Adjustment Preparation

Preparatory steps before assembly line adjustments.

Auto-control Interface Directions

Guidelines for using auto-control interfaces during adjustments.

Auto Adjustment Map (RS-232C)

RS-232C commands for auto-adjusting parameters.

Manual White Balance Adjustment

Procedure for manual white balance adjustment using remote control.

DDC EDID Write (RGB)

Writing EDID data for RGB interface.

DDC EDID Write (HDMI)

Writing EDID data for HDMI interface.

EDID Data Management

Overview and management of EDID data.

EDID Data Tables

Analog RGB EDID Table (FHD)

EDID data table for Analog RGB FHD signals.

Analog RGB EDID Table (HD)

EDID data table for Analog RGB HD signals.

OUTGOING CONDITION CONFIGURATION

GND & Hi-pot Test

Test Process

Detailed steps for performing GND and Hi-pot tests.

EYE-Q Function Check

Local Dimming Function Check

3D Function Test

TROUBLESHOOTING

Process [A]

Troubleshooting flowchart for power-related issues.

Process [B]

Troubleshooting flowchart for raster-related issues.

Component Signal Troubleshooting

Troubleshooting for Component signal input issues.

HDMI Signal Troubleshooting

Troubleshooting for HDMI signal input issues.

AV Video Signal Troubleshooting

Troubleshooting for AV video signal input issues.

TV(RF) Signal Troubleshooting

Troubleshooting for TV RF signal input issues.

No Sound Troubleshooting

Steps to diagnose and resolve no sound issues.

BLOCK DIAGRAM

EXPLODED VIEW

TEST POINTS (NON-EU Models)

CI Slot Test Points

Test points for the CI slot interface.

SCART Test Points

Test points for the SCART interface.

Headphone Test Points

Test points for the headphone jack.

S2 Test Points

Test points for the S2 interface.

POWER B/D SCHEMATICS

Voltage Regulators

Schematics for various voltage regulator circuits.

IR/LED CONTROL SCHEMATICS

USB INTERFACE SCHEMATICS

HDMI INTERFACE SCHEMATICS

HDMI 1, HDMI 2, Side HDMI

Schematics for different HDMI port configurations.

RGB-PC / SPDIF SCHEMATICS

RS-232C INTERFACE SCHEMATICS

LVDS INTERFACE SCHEMATICS

GLOBAL TUNER BLOCK SCHEMATICS

HEADPHONE JACK SCHEMATICS

AUDIO AMPLIFIER SCHEMATICS

COMPONENT/AV INTERFACE SCHEMATICS

ETHERNET INTERFACE SCHEMATICS

SERIAL FLASH MEMORY SCHEMATICS

MSTART DEBUG 4PIN CONNECTION

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