AOC I2369VM Schematic

23" LCD Color Monitor AOC I2369VM

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……………………………......5

3.Operation Instruction…………...............……..............6

3.1.General Instructions...........................…...................6

3.2.Hot Keys…………….…..............……...............6

3.3.OSD Setting…………….…...........................…......7

4.Input/Output Specification............……………............22

4.1.Input Signal Connector............………….................22

4.2.Factory Preset Display Modes…….........................24

4.3.Panel Specification.....………...…………................25

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

6.Schematic……………........................................28

6.1.Main Board………...........................................28

6.2.Key Board...…….............................................35

6.3.Power Board...……........................................36

7.PCB Layout..………….......................................39

7.1.Main Board………...........................................39

7.2.Key Board…………….....................................39

7.3.Power Board...……........................................40

8.Maintainability……….........................................41

8.1.Equipments and Tools Requirement...............41

8.2.Trouble Shooting………….............................42

9.White-Balance, Luminance Adjustment.............46

10.Monitor Exploded View………..…….…............48

11.BOM List…………………………………...........50

Revision List

Version Release Date Revision History L&T Model Name

A00 FEB-17-2013 Initial Release

HDCJV27BFVK2DNF.LF

HDCJV26MFV3ADNF.LF

Important Safety Notice

Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service

procedures recommended by AOC and described in this service manual are effective methods of performing service

operations. Some of these service operations require the use of tools specially designed for the purpose. The

special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in

order to minimize the risk of personal injury to service personnel. The possibility exists that improper service

methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE

NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in

which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not

undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not

recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the

equipment will be jeopardized by the service method selected.

Hereafter throughout this manual, AOC Company will be referred to as AOC.

WARNING

Use of substitute replacement parts, which do not have the same, specified safety characteristics may create shock,

fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from AOC.

AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.

Servicer assumes all liability.

FOR PRODUCTS CONTAINING LASER:

DANGER-Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM.

CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may

result in hazardous radiation exposure.

CAUTION -The use of optical instruments with this product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S

REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF

THIS SERVICE MANUAL.

Take care during handling the LCD module with backlight unit

-Must mount the module using mounting holes arranged in four corners.

-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to

the panel.

-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

-Make certain that treatment person’s body is grounded through wristband.

-Do not leave the module in high temperature and in areas of high humidity for a long time.

-Avoid contact with water as it may a short circuit within the module.

-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may

damage the panel.)

1. Monitor Specifications

2. LCD Monitor Description

The LCD MONITOR will contain a main board and a key board which house the flat panel control logic, brightness

control logic and DDC.

Monitor Block Diagram

Flat Panel and

LED backlight

Main Board

Key Board

Adapter

D-SUB

Signal

AC-IN

100V~240V

LED Drive.

HDMI

Signal

3. Operating Instructions

3.1 General Instructions

Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor.

By changing these settings, the picture can be adjusted to your personal preferences.

3.2 Hotkeys

3.3 OSD Setting

Basic and simple instruction on the control keys.

4. Input/Output Specification

4.1 D-SUB CONNECTORS and HDMI CONNECTORS

Pin Assignments

Pin Number

15-Pin Side of the Signal Cable

Pin Number 15-Pin Side of the Signal Cable

Video-Red

9 +5V

Video-Green

Ground

Video-Blue

11 N.C.

4 N.C. 12 DDC- Serial data

Detect Cable

13 H-

sync

6 GND-R 14 V- sync

7 GND-G 15 DDC- Serial clock

8 GND-B

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