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
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Revision List
Note: Check updating contents, please input keywords in the “Find box” of PDF and click “OK”. After that, it will
automatically locate to the updating contents.
Version Release Date Revision History TPV Model Name
A00 Nov.19, 2010 Initial release
Add new models, lead in the new
main board[PCB P/N:
715G3635M02000004L]
A01 Jan.21, 2011
Update as below:
Block Diagram
Schematic
PCB Layout
BOM
T89AHDNCWX1UAN
T8ACHENEWX1UAN
2
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.)
Storage Temp.: -20° to 60°C
Operating Humidity :
10% to 85%
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2. LCD Monitor Description
The LCD monitor will contain a main board, a power board and a key board which house the flat panel control logic,
brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
(Include: adapter, inverterd and audio)
Power board
Monitor Block Diagram
CCFL Drive.
Key Board
Flat Panel and
CCFL backlight
Main Board
RS232 Connector
For white balance
adjustment in factory
mode
AC-IN
100V-240V
HOST Computer
Video signal, DDC
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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 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 position. The power indicator will light up.
3.2 Control Buttons and Connections
1. Auto 1. Power Cord
2. -/Volume 2. Signal Cable
3. + /Volume 3. Audio Cable
4. MENU
5. Power Key
Power Button:
Press this button to switch on/off of monitor’s power.
MENU / ENTER:
Activates OSD menu when OSD is off or activate/de-activate adjustment function when OSD is on
-/Volume:
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust
a function when function is activated.
+/Volume:
Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust
a function when function is activated.
Auto Adjust button / Exit:
1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).
2. When OSD menu is in off status, press this button over 2 seconds to activate the Auto Adjustment function.
The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.
Power Indicator:
Green — Power On mode
Orange — off mode
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.
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3.3 OSD Menu
• Press the MENU-button to activate the OSD window.
• Press – or + to navigate through the functions. Once the desired function is highlighted, press the
MENU-buttons to activate it. If the function selected has a sub-menu, press – or + again to navigate through
the sub-menu functions. Once the desired function is highlighted, press MENU-button to active it.
• Press – or + to change the settings of the selected function.
• To exit and save, selected the exit function. If you want to adjust any other function, repeat steps 2-3.
V.Position Adjust the vertical position of the picture
Warm
Normal
Cool
sRGB
User
Sub Menu Description
Standard Standard Mode
Text Text Mode
Internet Internet Mode
Game Game Mode
Movie Movie Mode
Sports Sports Mode
Gamma1 Adjust to Gamma1
Gamma2 Adjust to Gamma2
Gamma3 Adjust to Gamma3
Off Disable Dynamic Contrast Ratio
On Enable Dynamic Contrast Ratio
Adjust picture clock to reduce
Vertical-Line noise
Adjust Picture Phase to reduce
Horizontal-Line noise
Adjust the horizontal position of the
picture
Recall Warm Color Temperature from
EEPROM
Recall Normal Color Temperature form
EEPROM
Recall Cool Color Temperature from
EEPROM
Recall sRGB Color Temperature from
EEPROM
User-B Blue Gain from Digital-register
User-G Green Gain from Digital-register
User-R Red Gain from Digital-register
User-Y Yellow Gain from Digital-register
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Color Boost
Picture
OSD Setup
Extra
User-C Cyan Gain from Digital-register
User-M Magenta Gain from Digital-register
Full Enhance On or off Disable or enable Full Enhance Mode
Nature Skin On or off Disable or enable Nature Skin Mode
Green Field On or off Disable or enable Green Field Mode
Sky-blue On or off Disable or enable Sky-blue Mode
AutoDetect On or off Disable or enable AutoDetect Mode
Demo On or off Disable or enable Demo
Frame Size Adjust Frame Size
Brightness Adjust Frame Brightness
Contrast Adjust Frame Contrast
Hue Adjust Frame Hue
Saturation Adjust Frame Saturation
Position Adjust Frame Position
Bright Frame On or off Disable or enable Bright Frame
H.Position Adjust the vertical position of OSD
V.Position Adjust the horizontal position of OSD
Timeout Adjust the OSD Timeout
Language Select the OSD language
Auto Config Auto adjust the picture to default
DDC/CI Turn on/off DDC/CI Support
Aspect ControlFull/4:3
Reset Yes or no Reset the menu to default
Information
Show the information of the main image
and sub-image source
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4. Input/Output Specification
4.1 Input Signal Connector
Analog connectors
Pin No. Description Pin No. Description
1 Red 9 +5V
2 Green 10
3 Blue 11
4 Ground 12 DDC-Serial data
5 Ground 13 H-sync
6 R-Ground 14 V-sync
7 G-Ground 15 DDC-Serial clock
8 B-Ground
Detect Cable
Ground
15
6
1115
10
4.2 Factory Preset Display Modes
Standard Resolution
640×480 @60Hz 31.469 59.940
VGA
Dos-mode 720×400 @70Hz 31.469 70.087
SVGA
XGA
640×480 @72Hz 37.861 72.809
640×480 @75Hz 37.500 75.000
800×600 @56Hz 35.156 56.250
800×600 @60Hz 37.879 60.317
800×600 @72Hz 48.077 72.188
800×600 @75Hz 46.875 75.000
1024×768 @60Hz 48.363 60.004
1024×768 @70Hz 56.476 70.069
1024×768 @75Hz 60.023 75.029
Horizontal
Frequency(KHz)
Vertical
Frequency(Hz)
1360x768@60HZ 47.712 60.015
1366x768@60HZ 47.765 59.85
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4.3 Panel Specification
4.3.1 General Features
This specification applies to the 18.5 inch-wide Color a-Si TFT-LCD Module M185XW01.The display supports the
WXGA - 1366(H) x 768(V) screen format and 16.7M colors (RGB 6-bits + Hi-FRC data). All input signals are
1-channel LVDS interface and this module doesn’t contain an inverter board for backlight.