AOC I2757Fh

27" LCD Color Monitor AOC I2757FH
Service
Service
Service
Horizontal Frequency
30-83 KHz
Table of Contents
Description Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Table of Contents.......……..............................……........1
Revision List.…........................................…………........2
Important Safety Notice.……............................……......3
1.Monitor Specification..............................………..........4
2.LCD Monitor Description……………………………......6
3.Operation Instruction…………...............……..............7
3.1.General Instructions...........................…...................7
3.2.Hot Keys…………….…..............……...............7
3.3.OSD Setting…………….…...........................…......8
4.Input/Output Specification............……………............22
4.1.Input Signal Connector............………….................22
4.2.Factory Preset Display Modes…….........................23
4.3.Panel Specification.....………...…………................24
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
5.Block Diagram…….........………….................26
6.Schematic……………........................................27
6.1.Main Board………...........................................27
6.2.Key Board...…….............................................34
7.PCB Layout..………….......................................35
7.1.Main Board………...........................................35
7.2.Key Board…………….....................................35
8.Maintainability……….........................................36
8.1.Equipments and Tools Requirement...............36
8.2.Trouble Shooting………….............................37
9.White-Balance, Luminance Adjustment.............41
10.Monitor Exploded View………..…….…............43
11.BOM List…………………………………...........45
I2757FH

AOC I2757Fh Specifications

General

Brand	AOC
Model	I2757Fh
Category	Monitor
Language	English

Summary

Safety and Handling Precautions

General Safety Warnings

Essential safety guidelines for service personnel, including laser warnings and handling precautions.

Monitor Specifications and Description

Panel and Display Characteristics

Details on panel size, resolution, color depth, viewing angles, and electrical/optical properties.

InputOutput and Connectivity

Information on signal connectors (D-SUB, HDMI) and factory preset display modes.

User Operation and Settings Guide

Basic Operation and Hotkeys

Instructions for turning the monitor on/off and using front panel hotkeys for quick adjustments.

OSD Menu Navigation and Settings

Guide to accessing and adjusting On-Screen Display (OSD) menus for image, color, and system settings.

Schematics and PCB Layouts

Main Board and Interface Schematics

Detailed schematics for the main board, VGA, HDMI, and LVDS interface circuits.

Power, Audio, and Control Schematics

Schematics for power supply, audio amplifier, backlight driver, and key board circuits.

PCB Layout Diagrams

Visual layout of the main board and key board components.

Service and Troubleshooting

Required Tools and Equipment

List of necessary tools and equipment for servicing the monitor.

Troubleshooting Common Issues

Flowcharts for diagnosing and resolving common issues like no power, no video, and image quality problems.

White Balance and Luminance Calibration

Color Temperature and Gain Adjustment

Procedure for adjusting color temperature (Warm, Normal, Cool, sRGB) and RGB gain levels.

Parts Identification and Bill of Materials

Monitor Exploded View and Parts List

Visual identification of monitor components and a detailed parts list.

Bill of Materials (Component Breakdown)

Comprehensive list of all parts, including labels, cables, connectors, passive, and active components.