AOC e2437F2 User manual

24" LCD Monitor AOC e2437F2
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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...............……………….......26
4.1.Input Signal Connector...............………..................26
4.2.Factory Preset Display Modes……..........................28
4.3.Panel Specification…………..………………………..29
5.Block Diagram….........................................................31
5.1.Main Board…..….............................................31
5.2.Power Board…………..…………………………......32
6.Schematic…………..….........................................34
6.1.Main Board..…….…...........................................34
6.2.Power Board..……….........................................40
6.3.LED Board……..………..………………………43
6.4.USB Board…..………........................................44
6.5.Key Board…............……...................................45
7.PCB Layout..………..............................................46
7.1.Main Board………..…........................................46
7.2.Power Board….…..............................................47
7.3.LED Board……..………..………………………50
7.4.USB Board…..……….........................................50
7.5.Key Board………..…..........................................52
8.Maintainability………............................................54
8.1.Equipments and Tools Requirement…...............54
8.2.Trouble Shooting…..………...............................55
9.White-Balance,Luminance Adjustment…............59
10.Monitor Exploded View……................................61
11.BOM List…………..……………………….............63
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

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Revision List
Version Release Date Revision History TPV Model Name
A00 Nov.23,2011 Initial release
HKAASI2MPXSDDN
HKAASI2LPXCKDN
HKAASI2LPX3ADN
HKAASI2MPXSCDN

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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 radiations 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.)

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1. Monitor Specifications

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2. LCD Monitor Description
The LCD monitor will contain a main board, two adapter boards, a converter board, a USB board, a LED board and
a key board which house the flat panel control logic, brightness control logic and DDC.
The converter board will provide DC to DC Inverter voltage to drive the backlight of panel.
AC-IN
100V-240V
Monitor Block Diagram
Converter board
Flat Panel and
LED backlight
Main Board RS232 Connector
For white balance
adjustment in factory
mode
LED Drive.
Video signal, DDC
HOST Computer
Key Board
Adapter
LED Board
USB Board

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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 quality can be adjusted to your personal preferences.
3.2 Control Buttons and Connections
Power Key
Press the Power button continuously about 2 second to turn off the monitor.
Eco Mode/DCR/i-care hot key
Press the Eco key continuously to select the Eco mode of brightness and DCR on when there is no OSD (Eco mode
hot key may not be available in all models).
i-care can detect the intensity of surrounding lights and automatically adjusts the monitor brightness according to
different light intensity
Volume adjustment hot key
When there is no OSD, press Volume ( ) to active volume adjustment bar, press or to adjust volume. (Only
for the models without speakers).
4:3 or wide image ratio hot key
When there is no OSD, press left 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.)
Source hot key
When the OSD is closed, press Source (or Auto/Source) button will be Source hot key function (Only for the models
with dual or more inputs). Press Source button continuously to select the input source showed in the message bar,
press Menu/Enter button to change to the source selected.
Auto configure hot key
When the OSD is closed, press Auto/Source button continuously about 2 second to do auto configure (Only for the
models with dual or more inputs).

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1. Power
2. Audio
2. Analog (DB-15 VGA cable)
3. DVI
5. HDMI
To protect equipment, always turn off the PC and LCD monitor before connecting.
1 Connect the power cable to the AC port on the back of the monitor.
2 Connect the audio cable to audio in port on the back of the monitor.
3 Connect one end of the 15-pin D-Sub cable to the back of the monitor and connect the other end to the computer's
D-Sub port.
4 (Optional – Requires a video card with DVI port) - Connect one end of the DVI cable to the back of the monitor and
connect the other end to the computer’s DVI port.
5 (Optional – Requires a video card with HDMI port) - Connect one end of the HDMI cable to the back of the monitor
and connect the other end to the computer’s HDMI port.
6 Turn on your monitor and computer.
If your monitor displays an image, installation is complete. If it does not display an image, please refer
Troubleshooting.

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3.3 OSD Menu
1) Press Menu (Power) button to activate the OSD window. Press left, right, up, down button to navigate through
the functions. Once the desired function is highlighted, press Menu (Power) button to activate submenu.
2) In sub-menu, Press up, down button to navigate through the functions. Once the desired function is highlighted,
press left, right button to change the setting. Press Menu (Power) button to return to superior menu.
3) If you want to adjust any other function, repeat steps 1-2.
4) To exit OSD windows, select “exit” icon on main OSD, then press Menu (Power) button.
5) OSD Lock Function: To lock the OSD, press and hold the Left 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 Left 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 disalbe to
adjust.
3) One of DCR, Color Boost, and Picture Boost functions is active; the other two functions are turned off accordingly.

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