AOC e2343F2 Schematic

23" LCD Color Monitor AOC e2343F2

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

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.Control Button…………….…..............……...............6

3.3.OSD Menu…………….…...........................…...........7

4.Input/Output Specification............……………............18

4.1.Input Signal Connector............………….................18

4.2.Factory Preset Display Modes…….........................19

4.3.Panel Specification.....………...…………................20

5.Block Diagram…….........………….................23

6.Schematic……………........................................24

6.1.Main Board………...........................................24

6.2.Key Board...…….............................................31

7.PCB Layout..………….......................................32

7.1.Main Board………...........................................32

7.2.Key Board…………….....................................34

8.Maintainability……….........................................35

8.1.Equipments and Tools Requirement...............35

8.2.Trouble Shooting………….............................36

9.White-Balance, Luminance Adjustment.............40

10.Monitor Exploded View………..…….…............42

11.BOM List…………………………………...........44

Revision List

Version Release Date Revision History L&T Model Name

A00 Dec.-31-2010 Initial release

HDAJNZ2BZ3K2HNF.LF

HDAJNZ2MZ35AHNF.LF

HDAJNZ2FZ3UHHNF.LF

HDAJNZ2TZ31RHNF.LF

A01 Jan.-21-2011 Add new model HDAJNZ2LZ33ADNF.LF

A02 Jan.-31-2011 Add new models

HDAJNZ2MZ35ADNF.LF

HDAJNZ2FZ3UHDNF.LF

HDAJNZ2QZ3K6XNF.PA

A03 Feb.-14-2011 Add new model HDAJNZ2TZ31RDNF.LF

A04 Mar.-25-2011

Add new models

Add panel 2nd

source:LM230WF5-TRC2

HDBJNZ2LZ33ADNF.LF

HDBJNZ2JZ34ADNF.LF

A05 Apr.-05-2011 Add new model HDBJNZ2MZ35ADNF.LF

A06 Apr.-29-2011 Add new models

HDBJNZ2TZ31RDNF.LF

HDBJNZ2FZ3UHDNF.LF

A07 May.-06-2011 Add new models

HDBJNZ2MZ3RODNF.LF

HDBJNZ2BZ3K5HNF.LF

A08 Nov.-7-2011 Add new models

HDBJNZ2MZ3VEDNF.LF

HDBJNZ2TZ32RDNF.LF

HDBJNZ2FZ3UMDNF.LF

HDBJNZ2AZ3PGDNF.LF

A09 JUN-24-2012 Add new model

HDCJNZ2CZ3AODNF.LF

HDCJNZ2BZ3K2HNF.LF

A10 NOV-19-2012 Add new model HDCJNZ2TZ32RDNF.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

LED Drive.

AC-IN

100V~24

Flat Panel and

LED backlight

Main Board

Key Board

Hdmi2

Signal

Adapter

D-SUB

Signal

Hdmi1

Signal

Earphone

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 base of the monitor. By

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

3.2 Control Buttons

Power

Press the Power button to turn 0n/off the monitor.

Eco Mode / <

Press the Eco key continuously to select the Eco mode of brightness when there is no OSD ( Eco mode hot key may

not be available in all models).

4:3 or wide image ratio / >

When there is no OSD and VGA input only, press hotkey continuously to change 4:3 or wide image ratio. (If the product screen

size is 4:3 or input signal resolution is wide format, the hot key is disable to adjust and also only available for VGA input )

When HDMI input, press hotkey continuously to activate Volume, and press the Up or Down to change the setting, press Menu

button for confirmation and exit OSD. This only available for HDMI input

Auto/Source/Exit

When the OSD is closed, press Auto/Source/Exit button continuously about 2 second to do auto configure (only for

the models with dual or more inputs).

When the OSD is closed, press Auto/Source/Exit button will be Source hot key function(Only for the models with

dual or more inputs).Press Auto/Source/Exit button continuously to select the input source showed in the message

bar, press Menu/Enter button to change to the source selected.

3.3 OSD Menu

1) Press the MENU-button to activate the OSD window.

2) Press < or > to navigate through the functions. Once the desired function is highlighted, press the MENU-button to activate sub-menu . Once the desired function is highlighted, press MENU-button to activate it.

3) Press < or > to change the settings of the selected function. Press < or > to select another function in sub-menu . Press AUTO to exit . If you want to adjust any other function, repeat steps 2-3.

4) OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then press power button to turn the monitor on.

Notes:

1) If the product has only one signal input, the item of "Input Select" is disable to adjust.

2) If the product screen size is 4:3 or input signal resolution is wide format, the item of "Image Ratio" is disable to

adjust.

3) One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.