AOC e2440V User Manual

24" LCD Monitor AOC e2440Va
1
Service
Service
Service
Horizontal Frequency
30- 83kHz
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……….…………………….......5
3.Operation Instruction.…………...................……...........6
3.1.General Instructions....................................…...........6
3.2.Control Buttons and Connections...............................6
3.3.OSD Menu…............................................................8
4.Input/Output Specification...............……………….......25
4.1.Input Signal Connector...............………..................25
4.2.Factory Preset Display Modes……..........................26
4.3.Panel Specification…………..………………………..27
5.Block Diagram….........................................................30
5.1.Main Board…..….............................................30
5.2.Power Board…………..…………………………......31
6.Schematic…………..….........................................32
6.1.Main Board..…….…...........................................32
6.2.Power Board..……….........................................37
6.3.Light Sensor Borad……………………………….39
6.4.Key Board…............……....................................40
7.PCB Layout..………..............................................41
7.1.Main Board………..…........................................41
7.2.Power Board….…..............................................42
7.3.Light Sensor Borad…………………………….44
7.4.Key Board………..…..........................................45
8.Maintainability………............................................46
8.1.Equipments and Tools Requirement…...............46
8.2.Trouble Shooting…..………...............................47
9. FOS Testing………………………………………51
10.Firmware and DDC Instruction……………….….55
11.White-Balance,Luminance Adjustment…............73
12.Monitor Exploded View……................................75
13.BOM List…………..……………………….............76
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

AOC e2440V Specifications

General

Screen Size	24 inches
Resolution	1920 x 1080
Panel Type	TN
Refresh Rate	60 Hz
Response Time	5 ms
Brightness	250 cd/m²
Contrast Ratio	1000:1
Dynamic Contrast Ratio	20, 000, 000:1
Viewing Angles	170° horizontal, 160° vertical
Connectivity	VGA, DVI
Aspect Ratio	16:9

Summary

Safety Notices

Cautionary Statement

Caution to use a separate isolation transformer when servicing the unit.

Important Safety Notice

General Safety Precautions

Procedures and warnings for safe and reliable operation and service of AOC equipment.

Warning: Substitute Parts

Warning about using non-specified replacement parts creating hazards.

Laser Warning

Laser radiation warnings and precautions for products containing lasers.

Handling LCD Module

Monitor Specifications

Panel and Resolution Specifications

Electrical Specifications

Operating Instructions

Control Buttons and Connections

Connecting Peripherals

OSD Menu Operations

OSD Navigation

Instructions on how to navigate and operate the On-Screen Display (OSD) menu.

Luminance Adjustment

Brightness and Contrast Settings

Image Setup

Image Setup Navigation

Color Temperature

Color Temperature Navigation

Color Boost

Color Boost Navigation

Picture Boost

Picture Boost Navigation

OSD Setup

OSD Setup Navigation

Reset Menu

Input/Output Specification

Input Signal Connectors

Panel Specification

Display Characteristics

Electrical Characteristics

LVDS Signal Waveform

Backlight Unit

Optical Characteristics

Optical properties like viewing angle, contrast ratio, response time, and luminance.

Schematic Diagrams

Main Board Schematic

Detailed schematic diagram of the main board, showing component connections and layout.

Main Board Connectivity

Power Management Circuit

Scaler IC and Peripheral Components

Power Board Schematic

Converter Board Schematic

Light Sensor Board Schematic

Key Board Schematic

PCB Layouts

Main Board PCB Layout

Power Board PCB Layout

Converter Board PCB Layout

Maintainability

Equipment and Tools Requirement

Trouble Shooting

Troubleshooting: No Power

Flowchart for diagnosing and resolving "No Power" issues.

Troubleshooting: No Video

Troubleshooting: DIM Issues

Troubleshooting: Color Issues

Firmware and DDC Instructions

Firmware Update Procedures

Covers operation conditions, connections, programming, ISP tool usage, configuration, and write process.

HDCP Write Procedures

Details SOP, procedures, tool configuration, starting, verification, and error handling.

DDC Burning Procedures

Covers tool list, setup, burning process, verification, faults, and pin modification.

Monitor Exploded View

Exploded View Diagram