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LG 24MT45V User Manual

LG 24MT45V
31 pages
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Internal Use Only
Printed in KoreaP/NO :
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
SERVICE MANUAL
MFL68127251 (1410-REV00)
24MT45V 24MT45V-PDR
LD41A
LED TV
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LG 24MT45V Specifications

General IconGeneral
Screen shapeFlat
Response time8.5 ms
Display diagonal23.6 \
Display brightness250 cd/m²
Display resolution1366 x 768 pixels
Native aspect ratio16:9
LED backlighting typeEdge-LED
Contrast ratio (dynamic)5000000:1
Screen format adjustments4:3, 16:9
Supported graphics resolutions1366 x 768
3DNo
Tilt angle range5 - 20 °
Tuner typeAnalog & digital
Analog signal format systemPAL, SECAM
Digital signal format systemDVB-C, DVB-S2, DVB-T2
RMS rated power10 W
Number of speakers2
DVI-D ports quantity0
Common interface (CI)-
USB 2.0 ports quantity3
Audio formats supportedAAC, AC3, EAC3, HAAC, MP3, PCM
Image formats supportedJPG
Video formats supportedDIVX HD
Product colorBlack
Panel mounting interface75 x 75 mm
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power consumption (standby)0.3 W
Power consumption (typical)26 W
Package depth126 mm
Package width700 mm
Package height402 mm
Package weight5000 g
Cables includedAC
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)166.4 mm
Height (with stand)392.7 mm
Weight (with stand)3600 g
Depth (without stand)56 mm
Width (without stand)556 mm
Height (without stand)343.2 mm
Weight (without stand)3400 g

Summary

Safety Precautions

General Safety Guidance

General guidelines for safe servicing and handling of the receiver.

AC Leakage Current Checks

Procedures to check AC leakage current to prevent electrical shock hazards.

Servicing Procedures

General Servicing Rules

Essential rules for performing TV servicing safely and effectively.

ESD and Soldering Practices

Techniques for handling electrostatically sensitive devices and proper soldering.

Component Replacement Steps

Detailed procedures for replacing common components like ICs, transistors, and diodes.

Circuit Board Foil Repair

Guidelines for repairing damaged copper patterns on printed circuit boards.

Technical Specifications

Application Scope and General Specs

Defines the TV chassis application range and lists general specifications.

Test Methods and Formats

Outlines test methods and supported external input signal formats.

Adjustment Instructions

Designation and Software Update

Requirements for adjustment, including software version upgrades via USB.

EDID and Function Checks

Procedures for EDID download, function checks, and display/sound verification.

Assembly Line Processes

Tool, ADC, and Model/Serial Number Setup

Steps for tool option checks, ADC verification, and model/serial number download.

Assembly Line Function Verification

Procedures for verifying TV functions on the production line.

White Balance and System Checks

White Balance Adjustment Procedure

Equipment, notes, and procedures for white balance adjustment.

System Version and DPM Checks

Procedures for checking software version, DPM operation, and adjustment items.

Troubleshooting

No Power Troubleshooting

Flowchart for diagnosing and resolving no power issues.

No Screen or Video Troubleshooting

Flowcharts for diagnosing and resolving no screen or no video problems.

Diagrams and Views

Block Diagrams

Overall system block diagram.

Exploded View

A visual exploded view of TV components.

Power Supply Schematics

DC-DC Converters and LDOs

Schematics for DC-DC converters and LDO voltage regulators.

Panel Power Control

Schematic for the panel power control circuit.

Module and Control Schematics

HD/FHD Modules and IR/LED Control

Schematics for TV modules, IR/LED control, and IR output.

Interface Schematics

DSUB, RS232C, PC Audio, Ethernet

Schematics for DSUB, RS232C, PC Audio, and Ethernet interfaces.

DSUB/SCART Switch

Schematic for the DSUB and SCART switching mechanism.

HDMI, CEC, and MHL Schematics

HDMI Inputs and MHL Support

Schematics for HDMI inputs and MHL support.

CEC and MHL OCP

Schematics for Consumer Electronics Control (CEC) and MHL Over Current Protection.

Power and LED Driver Schematics

First Boost Up and Panel Settings

Schematics for the first boost up circuit and panel voltage settings.

LED Driver Settings

Configuration settings for the LED driver based on panel type.

Scaler and Memory Schematics

LCD TV Scaler and Memory ICs

Schematic showing the LCD TV scaler ICs and memory configurations.

CI Interface Schematics

CI Slot, Detection, and Control

Schematics for CI slot interface, detection, and power control.

CI TS Input and Host Interface

Schematics for CI Transport Stream input and host interface.

Tuner and LNB Schematics

Tuner Specifications and Pinouts

Details for EU Tuner T2/C/S2, including specifications and pinouts.

DVB-S2 LNB Power Supply

Schematic for the DVB-S2 LNB power supply circuit.

SCART, Component, and Audio Schematics

SCART and Component Inputs

Schematics for component video input and full SCART connections.

Audio Amplifier and Headphone Circuits

Schematics for the audio amplifier, headphone jack, and detection circuit.

Main Board and Options Schematics

Main Board MCU and Memory

Schematic for the main board, including MCU and memory ICs.

Model and Memory Option Configurations

Details on model options and memory configurations for different regions.

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