AOC LM 720 User Manual

AOC LM720  
AOC LM720  
17 inch TFT LCD Monitor  
User’s  
Manual  
by Envision Peripherals, Inc.  
Before operating your monitor, please read this  
manual thoroughly.  
AOC LM720  
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Precautions  
AOC LM720  
• Do not use the monitor near water, e.g. near a  
bathtub, washbowl, kitchen sink, laundry tub,  
swimming pool or in a wet basement.  
• The monitor is equipped with a three-pronged  
grounded plug, a plug with a third (grounding)  
pin. As a safety feature, this plug will only fit  
into a grounded power outlet. If your outlet  
does not accommodate the three-wire plug,  
have an electrician install the correct outlet, or  
use an adapter to ground the appliance safely.  
Do not defeat the safety purpose of the  
grounded plug.  
• Do not place the monitor on an unstable cart,  
stand, or table. If the monitor falls, it can injure  
a person and cause serious damage to the  
appliance. Use only a cart or stand  
recommended by the manufacturer or sold with  
the monitor. If you mount the monitor on a wall  
or shelf, use a mounting kit approved by the  
manufacturer and follow the kit instructions.  
• Unplug the unit during a lightning storm or  
when it will not be used for long periods of time.  
This will protect the monitor from damage due  
to power surges.  
• Slots and openings in the back and bottom of  
the cabinet are provided for ventilation. To  
ensure reliable operation of the monitor and to  
protect it from overheating, be sure these  
openings are not blocked or covered. Do not  
place the monitor on a bed, sofa, rug, or similar  
surface. Do not place the monitor near or over  
a radiator or heat register. Do not place the  
monitor in a bookcase or cabinet unless proper  
ventilation is provided.  
• Never push any object into the slot on the  
monitor cabinet. It could short circuit parts  
causing a fire or electric shock. Never spill  
liquids on the monitor.  
• Do not attempt to service the monitor yourself;  
opening or removing covers can expose you to  
dangerous voltage and other hazards. Please  
refer all servicing to qualified service personnel.  
• The monitor should be operated only with the  
type of power source indicated on the label. If  
you are not sure of the type of power supplied  
to your home, consult your dealer or local  
power company.  
To ensure satisfactory operation, use the  
monitor only with UL-listed computers which  
have appropriately configured receptacles  
marked between 100 - 240 V AC, Min. 5A.  
• The wall socket should be installed near the  
equipment and should be easily accessible.  
• Do not overload power strips and extension  
cords. Overloading can result in fire or electric  
shock.  
• Disconnect the power cord to stop the power  
supply to the monitor.  
• For use only with power adapter (Output  
12Vdc) which has UL, CSA listed license.  
AOC LM720  
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For Your Safety  
AOC LM720  
Special Notes on LCD Monitors  
General Notes  
The following symptoms are normal with an LCD  
monitor and do not indicate a problem:  
• Do not install the monitor near heat sources  
such as radiators or air ducts.  
• Due to the nature of the fluorescent light, the  
screen may flicker during initial use. Turn off the  
Power Switch and then turn it on again to make  
sure the flicker disappears.  
• Do not place monitor in direct sunlight or in  
areas with excessive dust, mechanical vibration  
or shock.  
• Save the original shipping carton and packing  
materials in case you need to ship your monitor.  
Be sure to repackage your monitor as it was  
originally packed at the factory.  
• You may find slightly uneven brightness on the  
screen depending on the desktop pattern you  
use.  
• The LCD screen has effective pixels of 99.99%  
or more. It may include blemishes of 0.01% or  
less such as a missing pixel or a pixel lit all of  
the time.  
• Periodically clean your monitor with a soft cloth.  
Stubborn stains may be removed with a cloth  
lightly dampened with a mild detergent solution.  
Never use strong solvents such as thinners,  
benzene, or abrasive cleaners, since these  
will damage the cabinet. Always unplug the  
monitor before cleaning it.  
• Due to the nature of the LCD screen, an after-  
image of the previous screen may remain after  
switching from an image that has been  
displayed for hours. This after-image could  
require several hours to disappear.  
Using the Right Power Cord  
The supplied power cord is a NEMA 5-15 style  
plug. It is UL-listed and CSA labeled for  
125 volts AC.  
• The life of the fluorescent light used in the LCD  
monitor is approximately 30,000 hours. Contact  
your dealer or EPI service center for  
replacement when the screen is dark, flickering  
or not lighting up. Never attempt to replace it by  
yourself.  
If the monitor will be connected to your computer’s  
power outlet, use a minimum No. 18 AWG, type  
SJT or SVT three conductors cord with one end  
terminating with a male grounded plug, rated 10A,  
250V, CEE-22. The other end must terminate with  
a molded-on type connector body, rated 10A,  
250V, having standard CEE-22 female  
configuration.  
AOC LM720  
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Before You Operate the Monitor  
AOC LM720  
Installing & Removing the Base  
General Features:  
Package Contents  
• 17" (43.2cm) TFT Color LCD Monitor  
The box that your monitor was shipped in should  
have included the following items:  
• Crisp, Clear Display for Windows  
1. LM720 LCD Monitor  
2. Power Adapter  
• Supports Resolutions up to 1280 X 1024 pixels  
@75Hz, (1280 x 1024 @ 60Hz Recommended)  
3. Power Cord  
• EPA ENERGY STAR®  
4. Windows 95/98/2000/ME/XP INF Driver Disk  
5. Quick Start Guide  
6. Booklet (Containing Warranty & Safety  
Information)  
• Ergonomic Design  
• Space Saving, Compact Case Design  
AOC LM720  
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Before You Operate the Monitor  
AOC LM720  
Connecting the Wires Using the Power Cord Supplied  
1. Connect the built-in video cable into the 15-pin  
connector on the back of your computer and  
tighten the two screws.  
Caution: Make sure the power cord is the correct  
type that is required in your area. This LCD  
monitor has a universal power supply that allows  
operation in either 100/120V AC or 220/240V AC  
voltage areas (no user adjustment is required).  
2. Connect the power cord into the power adaptor.  
3. Plug the other end of the power cord into a  
grounded AC outlet or UL-approved power  
strip.  
If the AC outlet is not grounded (with three holes),  
install the proper grounding adapter (not  
supplied).  
4. Connect the power adapter into the DC IN  
socket on the back of the monitor.  
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Before You Operate the Monitor  
AOC LM720  
Preparing to Install An Optional Wall Mounting Arm (Not supplied)  
This monitor can be attached to a wall mounting  
arm you purchase separately. Disconnect power  
before this procedure. Follow these steps:  
See next page for further installation instructions.  
1. Pull the screw covers off the back of the  
monitor.  
2. Support the base and remove the screws.  
3. Remove the base.  
AOC LM720  
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Before You Operate the Monitor  
AOC LM720  
Install An Optional Wall Mounting Arm (Not supplied)  
Follow these steps to finish installing the wall  
mounting arm:  
AOC's Model LM720 is compatible with the  
Ergotron line of mounting and arm solutions.  
1. Place the wall mounting arm onto the back of  
the monitor. Line up the holes of the arm with  
the holes in the back of the monitor.  
Contact Ergotron at 800-888-8458 or visit their  
information on the many ways on which you can  
mount your AOC LCD monitor.  
2. Insert the 4 screws into the holes and tighten.  
3. Insert the power cable into the slot on the back  
of the monitor.  
AOC LM720  
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Before You Operate the Monitor  
AOC LM720  
Adjusting the Viewing Angle  
How to Install INF & ICM File  
For optimal viewing, adjust the monitor's angle to  
your own preference.  
1. Insert the Windows 95/98/2000/ME/XP INF  
Driver Disk into your floppy drive.  
• Hold the stand firmly when you change the  
monitor's angle.  
2. Follow the Add New Hardware Wizard  
instructions on the screen.  
• You can adjust the monitor's angle from -5° to  
25°.  
3. If the wizard asks for the location of the driver  
file, select drive A and press Next.  
• Do not touch the LCD screen when you change  
the angle. It may cause damage or breakage.  
• Be careful to avoid pinching your hand in the  
swivel base.  
AOC LM720  
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Operating Instructions  
AOC LM720  
Front Panel Buttons  
Auto: Press this button to automatically set  
the H-Position, V-Position, Clock and  
Focus settings.  
Power Indicator: A green light indicates  
that the monitor is on. An orange light  
indicates that the monitor is in Off mode.  
Power: Press this button to turn the  
monitor on or off. The power indicator  
will light up.  
Brightness: Press this button to adjust the  
picture’s brightness. If the OSD window is  
open, this button allows you to move within  
the window and select desired functions.  
Contrast: Press this button to adjust the  
picture’s contrast. If the OSD window is  
open, this button allows you to move within  
the window and select desired functions.  
MENU: Press this button to open the OSD  
window or exit from the OSD window.  
On-screen Display (OSD): Press the  
MENU button to open the OSD window  
and adjust settings on your monitor.  
(See next page.)  
AOC LM720  
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Operating Instructions  
AOC LM720  
Adjusting the OSD Settings  
1. Press the MENU button to open the OSD  
5. To save and exit, highlight the EXIT icon and  
press MENU or leave the monitor alone for 10  
seconds. If you want to adjust any other  
function, repeat steps 2-4.  
window.  
2. Press the < or > buttons until the desired  
function is highlighted.  
Note: When the OSD window is open, the input  
signal timing settings appear at the top.  
H: stands for horizontal frequency and  
V: stands for vertical frequency.  
3. Press MENU to open the function’s window.  
4. Press the < or > buttons to change the settings  
of the function.  
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Operating Instructions  
AOC LM720  
pattern has vertical stripe noise, or the characters  
are twisted):  
DOS-mode  
This feature allows you to choose between  
resolutions of 720 x 400 or 640 x 400 while  
working in DOS-mode. Follow the instructions for  
selecting functions in the OSD window as listed on  
the previous page. Press your monitor’s Power  
button off and then on to activate your chosen  
DOS-mode resolution. Note: the default DOS-  
mode resolution is 720x400@70Hz.  
1. Change the resolution to 640 x 400  
2. Press the Power button off and then on.  
3. Press the AUTO button for 2 seconds.  
Note: the above procedure must process  
in full-screen pattern.  
To exit, press the ESC key or press ALT-F, and  
then press the X key.  
How to Optimize the DOS-mode  
1. Insert the Windows 95/98/2000/ME INF Driver  
Disk into your floppy drive.  
Plug & Play DDC1/2B Feature  
This monitor is equipped with VESA DDC1/2B  
capabilities according to the VESA DDC  
STANDARD. It allows the monitor to inform the  
host system of its identity and, depending on the  
level of DDC used, communicate additional  
information about its display capabilities. The  
communication channel is defined in two levels,  
DDC1 and DDC2B.  
2. Open Windows Explorer to search on the  
floppy drive (Drive A:) to find the Dos1.exe file.  
3. Double-click on the Dos1.exe file.  
4. Expand the picture to full screen by pressing  
the icon on the top of window. If there is no  
icon, the picture is already at full screen.  
The DDC1 is a unidirectional data channel from  
the display to the host that continuously transmits  
EDID information. The DDC2B is a bidirectional  
data channel based on the I²C protocol. The host  
can request EDID information over the DDC2B.  
If you don't have the driver disk:  
1. Choose Start / Programs / MS-DOS mode.  
2. Type C:\> EDIT and press Enter. You will be in  
the Dos-Editor screen.  
3. Press the AUTO button on the front of your  
monitor for 2 seconds. The screen will be  
automatically adjusted.  
If the screen is distorted (for example: the picture  
can't go to full screen, the background of white  
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Technical Support (FAQ)  
AOC LM720  
Problem  
Possible Solution  
Power LED is not ON • Make sure the power button is ON.  
• Make sure the power adaptor is properly connected to a grounded power  
outlet and to the monitor.  
No Plug & Play  
Picture is fuzzy  
• Confirm that your computer is Plug & Play compatible.  
• Confirm that your video card is Plug & Play compatible.  
• Inspect the video cable and make sure that none of the pins are bent.  
• Make sure the AOC monitor drivers are installed.  
(AOC monitor drivers are available at: www.aocmonitor.com)  
• Adjust the Contrast and Brightness settings.  
Picture bounces or a  
wave pattern is  
• Move electrical devices away from the monitor. They may be causing  
electrical interference.  
present in the picture  
Power LED is ON  
• Press a key on the keyboard or wiggle the mouse to re-activate the monitor.  
(green or orange light • Make sure the video cable is properly connected to the computer.  
is ON) but there is no • Inspect the video cable and make sure none of the pins are bent.  
video or picture.  
• Make sure your computer is operating correctly by pressing the CAPS LOCK  
key and observing whether the CAPS LOCK light turns ON or OFF.  
Missing one of the  
primary colors (RED,  
GREEN, or BLUE)  
• Inspect the video cable and make sure that none of the pins are bent.  
• Make sure the video cable is properly connected to the computer.  
Dead Pixel Criteria  
• In order to provide the highest performing products, EPI has set the following  
limits as to the maximum allowable number of bad pixels: 5 Bright Sub-pixels  
or 5 Dark Sub-pixels or combination of 8 Dark & Bright. The panel used on  
this product has a total of 3,932,160 sub-pixels. So even the maximum  
allowed of 8 bad sub-pixels would only amount to a very small 0.00020% of  
the total sub-pixels  
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Technical Support (FAQ)  
AOC LM720  
Problem  
Possible Solution  
• Adjust the CLOCK1 and FOCUS2 settings or press the AUTO button to  
automatically re-configure the monitor’s settings.  
Screen image is not  
centered or sized  
properly  
Picture has color  
defects (white does  
not look white)  
• Adjust the settings for Red, Green and/or Blue colors or select a different  
color temperature: 65 (6500 K) or 78 (7800 K).  
Poor brightness or  
contrast  
• The life time of the back-light is limited. After 30,000 hours, the luminance of  
the light has been reduced to half of its original value. Please send the  
monitor to an authorized service agent for service.  
Horizontal or vertical  
disturbances on the  
screen  
• Adjust the CLOCK and FOCUS settings or press the AUTO button to  
automatically re-configure the monitor’s settings.  
• Use Win 95/98 shut-down mode.  
1CLOCK (pixel frequency) controls the number of pixels scanned by one horizontal sweep. If the frequency is  
not correct, the screen shows vertical stripes and the picture’s width is incorrect.  
2FOCUS adjusts the phase of the pixel clock signal. With a wrong phase adjustment the picture has horizontal  
disturbances with very light screen images.  
Note: For FOCUS and CLOCK adjustment use “dot-pattern” or Win 95/98 shut-down mode pattern.  
Error Message  
Possible Solution  
Cable not connected  
• Make sure the video cable is properly connected to the computer.  
If the connector is loose, tighten the connector's two screws.  
• Inspect the video cable and make sure that none of the pins are bent.  
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Technical Support (FAQ)  
AOC LM720  
Error Message  
Possible Solution  
Input not supported  
• Your computer has been set to an incompatible display mode. Right click on  
the desktop and choose Properties. Click the Settings tab then set your  
computer’s display mode to one of the settings listed in the resolution chart  
below.  
Unsupported mode  
try different video  
card setting  
• Your computer’s resolution is out of VESA specifications. Right click on the  
desktop and choose Properties. Click the Settings tab then set your  
computer’s display mode to one of the settings listed in the resolution chart  
below.  
Resolution Chart  
Resolution  
(in pixels)  
Vertical  
Frequency  
Resolution  
(in pixels)  
Vertical  
Frequency  
640 x 480  
640 x 400  
640 x 350  
720 x 400  
640 x 480  
640 x 480  
640 x 480  
800 x 600  
800 x 600  
60 Hz  
70 Hz  
800 x 600  
800 x 600  
72.2 Hz  
75 Hz  
70 Hz  
832 x 624  
74.5 Hz  
60 Hz  
70 Hz  
1024 x 768  
1024 x 768  
1024 x 768  
1024 x 768  
1280 x 1024  
1280 x 1024  
72.8 Hz  
75 Hz  
70 Hz  
75 Hz  
66.67 Hz  
56.3 Hz  
60.3 Hz  
74.92 Hz  
60 Hz  
75 Hz  
AOC LM720  
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Appendix  
AOC LM720  
Specifications  
Plug & Play  
VESA DDC1/  
2BTM  
LCD  
Panel  
Driving  
system  
TFT Color LCD  
Input Connector  
D-Sub 15-pin  
Size  
17" (43.2 cm)  
Diagonal  
Input Video Signal  
Analog: 0.7 Vpp  
(standard),  
75 OHM, Positive  
Pixel pitch  
0.264 mm (H) x  
0.264 mm (V)  
Maximum Screen Size  
Horizontal:  
13.3" (338 mm)  
Viewable  
angle  
150° (H) 125° (V)  
Vertical:  
10.6" (270 mm)  
Input  
Response  
time  
16 milliseconds  
Power Source  
100~240 VAC,  
50/60 Hz  
Video  
Red, Green, Blue  
Analog Interface  
Environmental  
Considerations  
Operating Temp:  
32° to 104°F  
(0° to 40°C)  
Separate  
Sync.  
H/V TTL  
H-Frequency  
V-Frequency  
30 kHz - 80 kHz  
55-75 Hz  
Storage Temp:  
14° to 122°F  
(-10° to 50°C)  
Display Colors  
Dot Clock  
16.7 million colors  
135 MHz  
Operating  
Humidity:  
20% to 90%  
Maximum Resolution  
1280 x 1024 pixels  
Weight  
11.0 lbs. (5.0 Kg)  
AOC LM720  
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Appendix  
AOC LM720  
Specifications (continued)  
Front Panel Buttons  
Auto  
Brightness  
Contrast  
Power Switch  
MENU/ Exit  
External  
Controls:  
Functions Contrast  
Brightness  
Focus  
Clock  
H-Position  
V-Position  
Auto-Center  
Language  
Dos-mode Resolution  
Selected  
6500° K  
7800° K  
RGB Color temp.  
Recall  
Exit  
EPA ENERGY  
STAR®  
Yes  
Power Consumption  
(Maximum)  
45 Watts  
Regulatory  
Compliance  
UL, CSA, FCC, TÜV/  
GS, CE, XP Logo  
AOC LM720  
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Appendix  
AOC LM720  
Factory Preset Timing Table  
Resolution  
(in pixels)  
Horizontal  
Frequency  
Vertical  
Frequency  
Standard  
DOS-Mode  
600 x 400  
31.47 kHz  
70 Hz  
720 x 400  
640 x 480  
640 × 480  
640 × 480  
800 × 600  
800 × 600  
832 × 624  
1024 × 768  
1024 × 768  
1024 × 768  
1024 × 768  
1280 x 1024  
1280 x 1024  
31.47 kHz  
31.47 kHz  
35.00 kHz  
37.50 kHz  
37.879 kHz  
46.875 kHz  
49.725 kHz  
48.363 kHz  
56.476 kHz  
60.02 kHz  
60.241 kHz  
64.00 kHz  
80.00 kHz  
70 Hz  
60 Hz  
66.6 Hz  
75 Hz  
60 Hz  
75 Hz  
75 Hz  
60 Hz  
70 Hz  
75 Hz  
74.9 Hz  
60 Hz  
75 Hz  
VGA  
SVGA  
XGA  
SXGA  
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Appendix  
AOC LM720  
Connector Pin Assignment  
Pin Number  
Description  
Pin Number  
Description  
+5V  
1
2
3
4
5
6
7
8
Red  
9
Green  
10  
11  
12  
13  
14  
15  
Detect Cable  
NC  
Blue  
Ground  
Ground  
R-Ground  
G-Ground  
B-Ground  
DDC-Serial Data  
H-Sync  
V-Sync  
DDC-Serial Clock  
AOC LM720  
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