AOC E2243FWS - User manual

21.5" LCD Color Monitor AOC e2243Fws e2243Fwsk
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
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……………………………......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…….........................18
4.3.Panel Specification.....………...…………................19
5.Block Diagram…….........………….................22
6.Schematic……………........................................23
6.1.Main Board………...........................................23
6.2.Key Board...…….............................................28
7.PCB Layout..………….......................................29
7.1.Main Board………...........................................29
7.2.Key Board…………….....................................31
8.Maintainability……….........................................32
8.1.Equipments and Tools Requirement...............32
8.2.Trouble Shooting………….............................33
9.White-Balance, Luminance Adjustment.............37
10.Monitor Exploded View………..…….…............39
11.BOM List…………………………………...........41

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Revision List
Version Release Date Revision History L&T Model Name
A00 Sep.-08-2010 Initial release TIAJNR2BZ3K2NNF.LF
A01 Jan.-21.2011 Add new model TIAJNR2QZ3E6NNF.LF
A02 Apr.-29.2011 Add new model TIAJNR2BZ3ACNNF.LF
A03 Oct.-19.2011 Add new model TIAJNR2BZ3A7NNF.LF
TIAJNR2QZ3E8NNF.LF
A04 May.-29.2012 Add new model TICJNR2BZ3KKNNF.LF
A05 JUN-24-2012 Add new model TICJNR2QZ3E8NNF.LF
A06 NOV-12-2012 Add new model TICJNR2BZ33ANNF.LF

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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 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.)

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1. Monitor Specifications

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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.
LED Drive.
Monitor Block Diagram
Flat Panel and
LED backlight
Main Board
Key Board
D-SUB
Signal
AC-IN
100V~24
Adapter

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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 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, 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. )
Auto /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.

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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.

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4. Input/Output Specification
4.1 Input Signal Connector
Analog connector
4.2 Factory Preset Display Modes

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4.3 Panel Specification
4.3.1 General Features
LM215WF4-TRA2 is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type
display operating in the normally white mode. It has a 21.5 inch diagonally measured active display area with Full
HD resolution (1080 vertical by 1920 horizontal pixel array) Each pixel is divided into Red, Green and Blue
sub-pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is
determined with a 8-bit gray scale signal for each dot, thus, presenting a palette of more than 16,7M colors with
Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method that enables low power,
high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low Voltage Differential Signaling) chip. It is
intended to support applications where thin thickness, wide viewing angle, low power are critical factors and graphic
displays are important. In combination with the vertical arrangement of the sub-pixels, the LM215WF4-TRA2
characteristics provide an excellent flat panel display for office automation products such as monitors.
4.3.2 Display Characteristics

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4.3.3 Optical Characteristics
Electrical characteristics
Ta = 25°C
Parameter Symbol
Values
Unit
Min Typ Max
MODULE :
Power Supply Input Voltage VLCD 4.5 5.0 5.5 Vdc
Permissive Power Input Ripple VLCD - - 0.3 V
Power Supply Input Current
ILCD-MOSAIC(60Hz) - 1000 1300 mA
ILCD-BLACK(60Hz) - 1300 1690 mA
ILCD-BLACK(75Hz) - 2000 mA
Power Consumption PLCD - 5.00 6.5 Watt
Inrush current IRUSH - - 3.0 A
LED bar Electrical characteristics
Ta = 25°C
Parameter Symbol Condition
Values
Unit
Min. Typ. Max.
LED :
LED String Current Is - 60 65 mA
LED String Voltage Vs - 51.2 56 V
Power Consumption PBar - 12.3 13.4 Watt
LED Life Time LED_LT 30,000 - - Hrs