AOC e2236Vw Service manual
21.5" LCD Color Monitor AOC e2236Vw
Service
Service
Service
Horizontal Frequency
30-80 kHz
TABLE OF CONTENTS
Description Page Description Page
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.Adjusting the Picture…...................................8
4.Input/Output Specification...............……………….......27
4.1.Input Signal Connector...............………..................27
4.2.Factory Preset Display Modes……..........................28
4.3.Panel Specification…………..………………………..29
5.Block Diagram….........................................................32
5.1.Main Board…..….............................................32
5.2.Power Board…………..…………………………......33
6.Schematic…………..….........................................34
6.1.Main Board..…….…...........................................34
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.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
SAFETY NOTICE
6.2.Power Board..……….........................................38
7.PCB Layout..……….............................................41
7.1.Main Board………..…........................................41
7.2.Power Board….…..............................................42
7.3.Key Board………..…..........................................44
7.4.USB Board………..….........................................44
8.Maintainability………............................................45
8.1.Equipments and Tools Requirement…...............45
8.2.Trouble Shooting…..………...............................46
9.Firmware and DDC Instruction……………….….54
10.White-Balance,Luminance Adjustment…............69
11.Mechanical Instructions …............ .............71
12.Monitor Exploded View……................................75
13.BOM List…………..………………………............76
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21.5" LCD Color Monitor AOC e2236Vw
Revision List
Revision Date Revision History Remark
TIAASL2E6WA1BNE
A00 Nov.-25-2011 Initial release
TIAASL2D6WA3BNE
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21.5" LCD Color Monitor AOC e2236Vw
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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21.5" LCD Color Monitor AOC e2236Vw
1. Monitor Specifications
Model name e2236Vw
Driving system TFT Color LCD
Viewable Image Size 547mm diagonal
LCD Panel
Resolution
Physical
Characteristics
Environmental
Pixel pitch 0.248mm(H) x 0.248mm(V)
Video R, G, B Analog lnterface & Digital Interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 148.5 MHz
Horizontal scan range 30 kHz - 80 kHz
Horizontal scan
Size(Maximum)
Vertical scan range 55 Hz - 75 Hz
Vertical scan Size(Maximum) 268.11mm
Optimal preset resolution 1920 x 1080 (60 Hz)
Highest preset resolution 1920 x 1080 (60 Hz)
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin & DVI-D
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, TMDS
Power Source 100-240V～, 50/60Hz
Power Consumption
USB Downstream port (A type ) To USB device, loading < 100mA
off timer 0~24hours Select timing to turn off the monitor.
Connector Type 15-pin Mini D-Sub & DVI-D
Signal Cable Type Detachable
Dimensions & Weight:
Temperature:
Humidity:
Altitude:
476.64mm
Typical < 42 W
Standby < 1 W
Height (with base) 396.6 mm
Width 531.3mm
Depth 206mm
Weight (monitor only) 4.35 kg
Weight (with packaging) 5.8 kg
Operating 0° to 40°
Non-Operating -20°to 60°
Operating 10% to 85% (non-condensing)
Non-Operating 5% to 80% (non-condensing)
Operating 0~ 3000m (0~ 10000 ft )
Non-Operating 0~ 5000m (0~ 15000 ft )
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21.5" LCD Color Monitor AOC e2236Vw
2. LCD Monitor Description
The LCD monitor will contain a main board, an adapter board, a converter board, two USB boards and a key board
which house the flat panel control logic, brightness control logic and DDC.
The power part will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each
voltage.
Converter board
Adapter board
AC-IN
100V-240V
Monitor Block Diagram
LED Drive
Key board
Flat Panel and
LED backlight
Main Board
USB board*2
Video signal DDC
HOST Computer
RS232 Connector
For white balance
adjustment in factory
mode
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21.5" LCD Color Monitor AOC e2236Vw
3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
monitor.
By changing these settings, the picture can be adjusted to your personal preferences.
The power cord should be connected.
-
Connect the video cable from the monitor to the video card.
-
Press the power button to turn on the monitor, the power indicator will light up.
-
3.2 Control Buttons and Connections
Power Press to turn on or turn off the monitor.
Source (4 : 3 or wide) / Up Press
format.
Source hot key : When the OSD is closed, press
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 / Down Auto configure hot key: When the OSD is closed, press Auto button to do auto configure.
key to change the screen aspect ratio between standard 4:3 format or Wide
button will be Source hot key function (Only for the models with
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21.5" LCD Color Monitor AOC e2236Vw
1. Power
2. Analog (DB-15 VGA cable)
3.DVI
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 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.
3. (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.
4. 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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21.5" LCD Color Monitor AOC e2236Vw
3.3 Adjusting the Picture
Eco mode ---DCR, Standard, Text, Internet, Game, Movie, Sports
DCR
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21.5" LCD Color Monitor AOC e2236Vw
Standard
Text
Internet
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21.5" LCD Color Monitor AOC e2236Vw
Game
Movie
Sports
Notes : When Eco mode is not set as “Standard”, Contrast and Brightness can not be adjusted; When DCR is set as
“On”, Contrast, Brightness, Eco mode and Gamma can not be adjusted.
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21.5" LCD Color Monitor AOC e2236Vw
Color Boost --- Full Enhance, Nature Skin, Sky-Blue, Green Field, Auto Detect, Demo, Off, Exit
Full Enhance
Nature Skin
Sky-Blue
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21.5" LCD Color Monitor AOC e2236Vw
Green Field
Auto Detect
Demo
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21.5" LCD Color Monitor AOC e2236Vw
Off
Exit
Notes :
Full Enhance: Total color saturation is enhanced, suitable for vivid pictures.
Natural Skin: Suitable for human portrait.
Green Field: Suitable for large area of green.
Sky Blue: Suitable for sky or ocean scene.
Auto Detect: Suitable for outdoor or garden.
Demo: Screen divided into two for comparison purpose.
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21.5" LCD Color Monitor AOC e2236Vw
Luminance ---Brightness,Contrast, Gamma
Brightness
Contrast
Gamma
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21.5" LCD Color Monitor AOC e2236Vw
Exit
Notes : When Eco mode is not set as “Standard”, Contrast and Brightness can not be adjusted; When DCR is set as
“On”, Contrast, Brightness, Eco mode and Gamma can not be adjusted.
Clock
Phase
Image Setup --- Clock, Phase, H.Position, V.Position, Exit
H.Position
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21.5" LCD Color Monitor AOC e2236Vw
V.Position
Exit
Notes : When the input source is digital signal like DVI or HDMI, Image Setup can not be adjusted.
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21.5" LCD Color Monitor AOC e2236Vw
Color Temperature ---User-R , User-G , User-B, Normal, Warm, Cool, sRGB, Exit
User-R
User-G
User-B
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21.5" LCD Color Monitor AOC e2236Vw
Normal
Warm
Cool
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21.5" LCD Color Monitor AOC e2236Vw
sRGB
Exit
Notes :
One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.
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21.5" LCD Color Monitor AOC e2236Vw
Picture Boost --- V.Position, H.Position, Contrast, Brightness, Frame Size, Bright Frame, Exit
V.Position
H.Position
Contrast
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21.5" LCD Color Monitor AOC e2236Vw
Brightness
Frame Size
Bright Frame
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21.5" LCD Color Monitor AOC e2236Vw
Exit
Notes :
One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.
Extra ---Language, Reset, DDC-CI,OSD Timeout, Transparency, V. Position, H. Position, Off Timer,
Exit
Language
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21.5" LCD Color Monitor AOC e2236Vw
Reset
DDC-CI
OSD Timeout
Transparency
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21.5" LCD Color Monitor AOC e2236Vw
V. Position
H. Position
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21.5" LCD Color Monitor AOC e2236Vw
Off Timer
Exit
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21.5" LCD Color Monitor AOC e2236Vw
Exit
LED Indicator
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