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LED TV
SERVICE MANUAL
CHASSIS : LD59L / LD5ZM
MODEL : 49/55UF680*
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL69305902 (1510-REV01)
North/Latin America
Europe/Africa
Asia/Oceania
49/55UF685*
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
49/55UF680*-ZA
49/55UF685*-ZB
Printed in Korea
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Table of Contents
Related Manuals for LG 49UF680 ZA Series
Summarization of Contents
SERVICING PRECAUTIONS
General Servicing Precautions
General guidelines for safe and effective servicing procedures.
Electrostatically Sensitive (ES) Devices
Precautions for handling sensitive electronic components to prevent static damage.
General Soldering Guidelines
Best practices for soldering components on circuit boards.
SPECIFICATION
1. Application range
Defines the scope of the specification for LED TVs.
2. Requirement for Test
Outlines the conditions and requirements for testing TV components.
3. Test method
Details the methods used for performance and specification testing.
4. Model General Specification
Lists general specifications for different market models and supported satellites.
5. External Input Format
5.1. Standard Level For Input Signal (Video, Audio, Y/C, Component)
Specifies the standard input signal levels for various signal types.
5.2. 2D Mode
Details the input resolutions and formats supported in 2D mode.
ADJUSTMENT INSTRUCTION
1. Application Range
Specifies the application range of the adjustment instructions.
2. Designation
Provides designations and conditions for adjustments.
3. Automatic Adjustment
Details automatic adjustment procedures like MAC address and key downloads.
3.2. LAN Inspection
Procedures for inspecting LAN connectivity and settings.
3.4. Model name & Serial number Download
Instructions for downloading model and serial number information.
3.5. CI+ Key checking method
Method for checking CI+ key download status.
3.6. WIFI MAC ADDRESS CHECK
Procedure to check the WIFI MAC address.
4. Manual Adjustment
4.1. EDID(The Extended Display Identification Data)/DDC(Display Data Channel) download
Process for downloading EDID and DDC data for optimal resolution.
4.1.5. Green Eye inspection guide(Depending on model)
Guide for inspecting the green eye sensor functionality on the TV.
4.2. V-COM Adjust
4.2.1 Overview
Objective and working of V-COM adjustment for panel voltage deviation.
4.2.2 Equipment
Lists necessary equipment for V-COM adjustment.
4.2.3 Equipment connection MAP
Diagram showing equipment connections for adjustment.
4.2.4 Adj. Command (Protocol)
Command format and protocol for V-COM adjustment.
4.2.5 Adj. method
Step-by-step methods for V-COM adjustment (auto and manual).
4.3. White Balance Adjustment
4.3.1. Overview
Objective and working of White Balance adjustment for W/B deviation.
4.3.2. Equipment
Lists necessary equipment for White Balance adjustment.
4.3.3. Equipment connection MAP
Diagram showing equipment connections for adjustment.
4.3.4. Adj. Command (Protocol)
Command format and protocol for White Balance adjustment.
4.3.5. Adj. method
Step-by-step methods for White Balance adjustment (auto and manual).
4.3.6. Reference (White balance adjustment coordinate and color temperature)
Reference data for white balance coordinates and color temperature.
4.3.7. EDGE & IOL LED White balance table
White balance table for EDGE & IOL LED modules considering aging.
BLOCK DIAGRAM
1. LM14A
Overall block diagram of the LM14A main system.
LM14A
I2C PULL UP
Circuit diagram for I2C pull-up resistors.
GPIO PULL UP
Circuit diagram for GPIO pull-up resistors.
Mstar Debug
Debugging interface for Mstar components.
RS232C_Debug
Debugging interface for RS232C communication.
DDTS_Debug
Debugging interface for DDTS signals.
CLIP&Vx1_CAP
CLIP Top Side for Covershield
Details the push-type clip for covershield mounting.
Heatsink guide cap
Information on heatsink guide caps for thermal management.
Trouble shooting guide
A. Video error
Troubleshooting steps for video-related issues.
B. Power error
Troubleshooting steps for power-related issues.
C. Audio error
Troubleshooting steps for audio-related issues.
D. Function error
Troubleshooting for functional errors like remote control or Wi-Fi.
E. Noise
Troubleshooting for audio or physical noise issues.
F. Exterior defect
Troubleshooting for physical damage to the TV exterior.
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