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LG FLATRON 29UM68 User Manual

LG FLATRON 29UM68
37 pages
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P/NO : MFL68962210(1601-REV00) Printed in China
COLOR MONITOR
SERVICE MANUAL
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS NO. : LM55I
MODEL: 29UM68
Internal Use Only
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LG FLATRON 29UM68 Specifications

General IconGeneral
Screen Size29 inches
Resolution2560 x 1080
Panel TypeIPS
Aspect Ratio21:9
Refresh Rate75 Hz
Response Time5ms (GTG)
Brightness250 cd/m²
Contrast Ratio (Typical)1000:1
AMD FreeSyncYes
Color GamutsRGB 99%
ConnectivityHDMI, DisplayPort
Viewing Angle178°(H), 178°(V)
Ports2 x HDMI, 1 x DisplayPort
VESA Mount75 x 75 mm
Power Consumption30W (Typical)

Summary

PRECAUTIONS AND SAFETY GUIDELINES

Safety Related Components

Critical parts must be replaced with manufacturer-specified parts to prevent hazards.

Handling LCD Module

Guidelines for handling LCD modules to prevent damage and ensure safety.

Electric Shock Hazard

Warning about electric shock, especially when replacing backlight components.

Leakage Current Test and Service Tool Caution

Procedure for leakage current test and caution for service tools.

SERVICING PRECAUTIONS

General Servicing, ESD, and Soldering Guidelines

General servicing rules, ESD prevention, and soldering best practices.

COMPONENT REPLACEMENT PROCEDURES

IC, Transistor, Diode Replacement

Procedures for replacing ICs, transistors, and diodes.

Fuse, Resistor Replacement, and Circuit Board Repair

Steps for replacing fuses/resistors and repairing circuit board foils.

SPECIFICATIONS

General Specification Overview

Details on brand, model, region, features, chassis, and interface.

SPECIFICATIONS (Continued)

Mechanical Specifications

Physical dimensions, weight, and appearance details of the monitor.

Optical Characteristics

Specifications related to optical characteristics like luminance and contrast.

SPECIFICATIONS (Continued)

Viewing Angle and Luminance

Horizontal/vertical viewing angles and average luminance values.

Contrast Ratio and Response Time

Contrast ratio and response time specifications.

SPECIFICATIONS (Continued)

Engineering Specifications

Technical specs like operating frequency, resolution, and input voltage.

SPECIFICATIONS (Continued)

Power Modes and Environmental Conditions

Sleep/off modes, MTBF, and environmental operating/storage limits.

OSD Menu Functions

OSD menu items for channel, adjustment, audio, setup, and quick settings.

SPECIFICATIONS (Continued)

Picture-by-Picture and Picture Settings

PBP features, picture modes, adjustments, and game settings.

Color and Sound Adjustments

Color temperature, RGB, six-color, and MaxxAudio settings.

SPECIFICATIONS (Continued)

General Settings and Language Options

Language, energy saving, power LED, standby, buzzer, OSD lock.

SPECIFICATIONS (Continued)

Applied LCD Module Details

LCD module maker, type, active area, and CIE color coordinates.

Display Area Specifications

Active display area dimensions relative to the bezel.

EDID DATA INFORMATION

Identification, Protocol, and HDMI 1 EDID Data

EDID identification, DDC 2AB protocol, and HDMI 1 data.

EDID DATA INFORMATION (Continued)

HDMI 2 and Display Port EDID Data

EDID data for HDMI 2, Display Port (Freesync ON/OFF), and PBP.

EDID DATA INFORMATION (Continued)

Display Port EDID Data (Ver 1.4) and PBP EDID Data

Display Port EDID data (Ver 1.4) and PBP EDID data.

EDID DATA INFORMATION (Continued)

HDMI 2 and Display Port EDID Data (Continued)

HDMI 2 and Display Port EDID data.

TIMING CHARTS

Signal Timing and H/V Parameters

Diagrams and tables for video, sync, and H/V timing.

TIMING CHARTS (Continued)

HDMI Video Input Timing

Factory supported video modes for HDMI input.

ADJUSTMENT PROCEDURES

General Procedures and EDID Management

Application, designation, PCB check, ADC, and EDID processes.

ADJUSTMENT PROCEDURES (Continued)

Assembly Line and Color Adjustments

HDCP keys, color/gamma calibration, and preset adjustments.

ADJUSTMENT PROCEDURES (Continued)

Operation Checks and Shipping Conditions

DPM operation checks and shipping condition settings.

COMMUNICATION PROTOCOLS AND COMMANDS

I2C, Command Format, and Screen Adjustments

I2C, command format, and screen adjustment commands.

COMMUNICATION PROTOCOLS AND COMMANDS (Continued)

EDID SN Update and EEPROM Write

Commands for EDID SN update and EEPROM data write.

COMMUNICATION PROTOCOLS AND COMMANDS (Continued)

EDID and EEPROM Data Read Operations

EEPROM data read and EDID read procedures.

BLOCK DIAGRAM (Main)

PCB Identification and Dimensions

PCB part number, size, and layer count.

TROUBLESHOOTING GUIDE

No Power Issue Troubleshooting

Troubleshooting flowchart for "No Power" issues.

TROUBLESHOOTING GUIDE (Continued)

No Raster/OSD Display Troubleshooting

Troubleshooting flowchart for "No Raster" or OSD display issues.

DPM Troubleshooting

Troubleshooting for DisplayPort/HDMI (DPM) issues.

EXPLODED VIEW

Important Safety Notice

Safety notice regarding special safety-related parts.

SCHEMATICS

HDMI, DisplayPort, and ESD Protection Schematics

Diagrams for HDMI, DisplayPort interfaces, and ESD protection.

SCHEMATICS (Continued)

Main IC Power Line and Capacitors

Power supply lines and capacitor connections for the main IC.

SCHEMATICS (Continued)

Main IC Power Line and Capacitors (Cont.)

Power supply lines and capacitor connections for the main IC.

SCHEMATICS (Continued)

DC-JACK and Power Sequence Circuitry

Schematic for DC jack and power sequence of 1.8V/1.15V rails.

SCHEMATICS (Continued)

29-inch and 34-inch LED Driver Schematics

Schematics for the 29-inch and 34-inch LED driver circuits.

SCHEMATICS (Continued)

Speaker and Headphone Amplifier Schematics

Schematics for speaker and headphone amplifier circuits.

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