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LG UltraGear 27GR93U-B User Manual

LG UltraGear 27GR93U-B
21 pages
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LED MONITOR
SERVICE MANUAL
CHASSIS : LM33A
MODEL : 27GR93U
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO :
MFL71821322(2305-REV00)
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
Copyright © 2023 LG Electronics Inc. All rights reserved. Only training and service purposes.
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LG UltraGear 27GR93U-B Specifications

General IconGeneral
Screen Size27 inches
Refresh Rate144Hz
Panel TypeIPS
Response Time1ms (GtG)
HDRHDR10
Adaptive SyncNVIDIA G-SYNC Compatible, AMD FreeSync Premium
Color GamutDCI-P3 95%
Aspect Ratio16:9
Brightness400 cd/m²
Contrast Ratio1000:1
Viewing Angle178° (H) / 178° (V)
VESA Mount100 x 100 mm
Resolution3840 x 2160
Ports2x HDMI, 1x DisplayPort
Stand AdjustmentsHeight, Tilt, Pivot
Weight13.9 lbs (with stand)

Summary

SAFETY PRECAUTIONS

General Safety Guidance

Guidelines for safe servicing, including the use of isolation transformers and handling of components.

AC Leakage Current Checks

Procedures for performing hot and cold AC leakage current checks to ensure user safety.

General Specification

Basic Product Information

Details on customer, model, chassis, and main PCB part number.

Display Panel Specifications

Screen Size and Resolution

Information on screen size, native resolution, and module list.

Panel Performance Metrics

Covers refresh rate, brightness, color gamut, contrast ratio, response time, and uniformity.

Connectivity and Features

Gaming Options and USB Support

Details on gaming features like FreeSync, G-Sync, and USB port specifications.

Audio Capabilities

Information regarding audio output and enhancement features.

Local Controls and Sensor Inputs

Details on local keys, KVM functionality, and sensor inputs.

Accessories and Cable Types

List of included accessories and types of cables supported.

Power and Reliability

Input Voltage and Power Rating

Information on input voltage requirements and the product's power rating.

Operating and Storage Reliability

Data on MTBF and conditions for reliable operation and storage.

Signal Timing and Resolution

HDMI Signal Timing Modes

Lists supported resolutions, horizontal/vertical frequencies, and polarity for HDMI input.

DisplayPort Signal Timing Modes

Details supported resolutions, frequencies, and polarity for DisplayPort input.

HDMI Video Input Presets

Specific preset modes for HDMI video input with frequency and resolution details.

BLOCK DIAGRAM

EXPLODED VIEW

ASSEMBLE AND DISASSEMBLE

Tools and Process for Disassembly

Lists required tools and outlines the steps for product disassembly and selective material removal.

TROUBLE SHOOTING GUIDE

No Power Troubleshooting

Flowchart for diagnosing and resolving issues related to the product not powering on.

No Display Troubleshooting

Flowcharts for diagnosing and resolving display issues via HDMI and DisplayPort inputs.

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