AOC LM520 User Manual

AOC LM520  
AOC LM520  
15 inch TFT LCD Monitor  
User’s  
Manual  
by Envision Peripherals, Inc.  
Before operating your monitor, please read this  
manual thoroughly.  
AOC LM520  
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For Your Safety  
AOC LM520  
adapter to ground the appliance safely. Do not  
defeat the safety purpose of the grounded plug.  
Precautions  
• Do not use the monitor near water, e.g. near a  
bathtub, washbowl, kitchen sink, laundry tub,  
swimming pool or in a wet basement.  
• 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.  
• 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  
• Do not overload power strips and extension  
cords. Overloading can result in fire or electric  
shock.  
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.  
• 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.  
• 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.  
• 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.  
To ensure satisfactory operation, use the  
monitor only with UL-listed computers which  
have appropriately configured receptacles  
marked between 100 - 240 V AC, Min. 3.5A.  
• The wall socket should be installed near the  
equipment and should be easily accessible.  
• 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.  
• For use only with the attached power adapter  
(Output 12Vdc) which have UL, CSA listed  
license.  
• Disconnect the power cord to stop the power  
supply to the monitor.  
• 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  
AOC LM520  
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For Your Safety  
AOC LM520  
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 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.  
The supplied power cord is a NEMA 5-15 style  
plug. It is UL-listed and CSA labeled for  
125 volts AC.  
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.  
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Before You Operate the Monitor  
AOC LM520  
Installing & Removing the Base  
General Features:  
Package Contents  
• 38.1cm(15") TFT Color LCD Monitor  
The box that your monitor was shipped in should  
have included the following items:  
• Crisp, Clear Display for Windows  
1. LM520 LCD Monitor  
• Supports Resolutions up to 1024 X 768 pixels  
@75Hz, (1024 x 768 @ 60Hz Recommended)  
2. Power Cord  
3. Windows 95/98/2000/ME/XP INF Driver Disk  
4. Quick Start Guide  
• EPA ENERGY STAR®  
• Ergonomic Design  
5. Booklet (Containing Warranty & Safety  
Information)  
• Space Saving, Compact Case Design  
AOC LM520  
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Before You Operate the Monitor  
AOC LM520  
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 Adapter 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 your LCD monitor's  
Power Adapter.  
3. Connect the Power Adapter to your monitor.  
If the AC outlet is not grounded (with three  
holes), install the proper grounding adapter (not  
supplied).  
4. Plug the other end of the power cord into a  
grounded AC outlet or UL-approved power strip.  
AOC LM520  
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Before You Operate the Monitor  
AOC LM520  
Adjusting the Viewing Angle  
For optimal viewing, adjust the monitor's angle to  
your own preference.  
• Do not touch the LCD screen when you  
change the angle. It may cause damage or  
breakage.  
• Hold the stand firmly when you change the  
monitor's angle.  
• Be careful to avoid pinching your hand in the  
swivel base.  
• You can adjust the monitor's angle from  
-5° to 25°.  
AOC LM520  
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Before You Operate the Monitor  
AOC LM520  
Preparing To Install An Optional Wall Mounting Arm (Not Supplied)  
This monitor can be attached to a wall mounting arm you can purchase separately. Disconnect power  
before performing this procedure. Follow these step.  
1. Pull the screw covers off the back of the monitor.  
2. Support the base and remove the screws.  
3. Remove the base.  
4. Follow the manufacturer’s instructions to assemble the wall mounting arm.  
See next page for further installation instructions.  
AOC LM520  
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Before You Operate the Monitor  
AOC LM520  
Install An Optional Wall Mounting Arm (Not Supplied)  
Follow these steps to finish installing the wall mounting arm:  
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.  
2. Insert the 4 screws into the holes and tighten.  
3. Insert the power cable into the slot on the back of the monitor.  
NOTE: AOC’s LM520 is compatible with the Ergotron line of mounting and arm solutions. Visit their  
LCD monitor.  
AOC LM520  
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Operating Instructions  
AOC LM520  
Front Panel Buttons  
Auto: Press this button to automatically set  
the H-Position, V-Position, Clock and Focus  
settings.  
Power Button: Press this button to put the  
monitor into Off mode. The power indicator  
light will turn orange. Press and hold this  
button again to restore the monitor to  
normal operating mode.  
Shuttle Knob: Press this knob to open the  
OSD window or select a highlighted function.  
Rotate this knob to switch functions or adjust  
settings.  
On-screen Display (OSD): Press the  
Shuttle Knob button to open the OSD  
window and adjust settings on your  
monitor.  
Power Indicator: A green light indicates that  
the monitor is on. An orange light indicates  
that the monitor is in Off mode.  
(See next page.)  
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AOC LM520  
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Operating Instructions  
AOC LM520  
Adjusting the OSD Settings  
1. Press the Shuttle Knob button to open the  
5. To save and exit, highlight the EXIT icon and  
press Shuttle Knob or leave the monitor  
alone for 10 seconds. If you want to adjust any  
other function, repeat steps 2-4.  
OSD window.  
2. Rotate the Shuttle Knob 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 the Shuttle Knob again to open the  
function window.  
4. Rotate the Shuttle Knob to change the settings  
of the function.  
AOC LM520  
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Operating Instructions  
AOC LM520  
Plug & Play DDC1/2B Feature  
How to Install INF & ICM File  
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.  
1. Insert the Windows 95/98/2000/ME/XP INF  
Driver Disk into your floppy drive.  
2. Follow the Add New Hardware Wizard  
instructions on the screen.  
3. If the wizard asks for the location of the driver  
file, select drive A and press Next.  
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.  
AOC LM520  
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Technical Support (FAQ)  
AOC LM520  
Problem  
Possible Solution  
Power LED is not ON • Make sure the power cord is properly connected to a grounded power outlet  
and to the monitor.  
No Plug & Play  
• 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)  
Picture is fuzzy  
• 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 2,359,296 sub-pixels. So even  
the maximum allowed of 8 bad sub-pixels would only amount to a very small  
0.00033% of the total sub-pixels.  
AOC LM520  
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Technical Support (FAQ)  
AOC LM520  
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: C1 or C2.  
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 LM520  
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  
60 Hz  
800 x 600  
60.3 Hz  
70 Hz  
800 x 600  
800 x 600  
832 x 624  
1024 x 768  
1024 x 768  
1024 x 768  
1024 x 768  
72.2 Hz  
75 Hz  
70 Hz  
70 Hz  
74.5 Hz  
60 Hz  
72.8 Hz  
75 Hz  
70 Hz  
66.67 Hz  
56.3 Hz  
75 Hz  
74.92 Hz  
AOC LM520  
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Appendix  
AOC LM520  
Specifications  
Plug & Play  
VESA DDC1/  
2BTM  
LCD  
Driving  
system  
TFT Color LCD  
Panel  
Input Connector  
D-Sub 15-pin  
Size  
15.0" (38.1 cm)  
Diagonal  
Input Video Signal  
Analog:  
0.7 Vpp  
75 OHM, Positive  
Pixel pitch  
(0.30 mm) (H)  
x
(0.30 mm) (V)  
Maximum Screen Size  
Power Source  
Horizontal:  
12.0" (304.1 mm)  
Vertical:  
9.0" (228.1 mm)  
Viewable  
angle  
120° (H) 100° (V)  
Input  
Response  
time  
30 milliseconds  
100~264 VAC,  
47~63 Hz  
Video  
Red, Green, Blue  
Analog Interface  
Environmental  
Considerations  
Operating Temp:  
32° to 122°F  
(0° to 50°C)  
Separate  
Sync.  
H/V TTL  
H-Frequency  
V-Frequency  
30 KHz - 60 KHz  
55-75 Hz  
Storage Temp:  
13° to 140°F  
(-25° to 60°C)  
Display Colors  
16.7 million colors  
Operating  
Humidity:  
Dot Clock  
80 MHz  
10% to 90%  
Maximum Resolution  
1024 x 768 pixels  
Weight  
7.3 lbs. (3.3 Kg)  
AOC LM520  
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Appendix  
AOC LM520  
Optimal Viewing Mode: 1024 x 768 @ 60Hz  
Specifications (continued)  
Front Panel Buttons  
Auto  
Shuttle Knob  
Power  
Power Indicator  
External  
Controls:  
Functions Contrast  
Brightness  
Focus  
Clock  
H-Position  
V-Position  
Language  
C1  
C2  
RGB Color temp.  
Reset  
Exit  
EPA ENERGY  
STAR®  
Yes  
Power Consumption  
(Maximum)  
25 Watts  
Regulatory  
Compliance  
TCO99, UL, CSA,  
FCC, TÜV/GS, CE,  
Windows® XP Logo  
AOC LM520  
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Appendix  
AOC LM520  
Factory Preset Timing Table  
Resolution  
(in pixels)  
Horizontal  
Frequency  
Vertical  
Frequency  
Standard  
VGA  
720 × 400  
31.47 kHz  
70 Hz  
640 × 480  
640 × 480  
640 × 480  
800 × 600  
800 × 600  
832 × 624  
1024 × 768  
1024 × 768  
1024 × 768  
1024 × 768  
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  
60 Hz  
66.6 Hz  
75 Hz  
60 Hz  
75 Hz  
75 Hz  
60 Hz  
70 Hz  
75 Hz  
74.9 Hz  
SVGA  
XGA  
AOC LM520  
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Appendix  
AOC LM520  
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 LM520  
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