LM720 - Screen AOC - Free user manual and instructions

USER MANUAL LM720 AOC

Line drawing of a computer monitor with AOC branding and stand (no text or symbols on the device itself)

AOC LM720

17 inch TFT LCD Monitor

User's Manual

by Envision Peripherals, Inc.

www.aocmonitor.com

Before operating your monitor, please read this manual thoroughly.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experienced radio/TV technician for help.

Notice

1. The changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission limits.
3. The manufacturer is not responsible for any radio or TV interference caused by unauthorized modification to this equipment. It is the responsibility of the user to correct such interference.

As an ENERGY STAR ^® Partner, Envision Peripherals, Inc. has determined that this product meets the ENERGY STAR ^® guidelines for energy efficiency.

Warning

To prevent fire or shock hazard, do not expose the monitor to rain or moisture. Dangerously high voltage is present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.

• Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement.
• 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.
• 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.
• 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.
• Do not overload power strips and extension cords. Overloading can result in fire or electric shock.
• For use only with power adapter (Output 12Vdc) which has UL, CSA listed license.

- 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.

- 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.

- 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.

- 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.

- Disconnect the power cord to stop the power supply to the monitor.

Special Notes on LCD Monitors

The following symptoms are normal with an LCD monitor and do not indicate a problem:

• 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.
• 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.
• 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.
• 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.

General Notes

• Do not install the monitor near heat sources such as radiators or air ducts.
• 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.
• 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.

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.

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.

Installing & Removing the Base

Install Stop

Remove

General Features:

• 17" (43.2cm) TFT Color LCD Monitor
- Crisp, Clear Display for Windows
• Supports Resolutions up to 1280 X 1024 pixels @75Hz, (1280 x 1024 @ 60Hz Recommended)
• EPA ENERGY STAR®
- Ergonomic Design
• Space Saving, Compact Case Design

Package Contents

The box that your monitor was shipped in should have included the following items:

1. LM720 LCD Monitor
2. Power Adapter
3. Power Cord
4. Windows 95/98/2000/ME/XP INF Driver Disk
5. Quick Start Guide
6. Booklet (Containing Warranty & Safety Information)

Connecting the Wires Using the Power Cord Supplied

Diagram of a device connection showing power, cable, and socket connections with numbered labels

1. Connect the built-in video cable into the 15-pin connector on the back of your computer and tighten the two screws.
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.
4. Connect the power adapter into the DC IN socket on the back of the monitor.

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).

If the AC outlet is not grounded (with three holes), install the proper grounding adapter (not supplied).

Preparing to Install An Optional Wall Mounting Arm (Not supplied)

Technical diagram of an electronic device with labeled components including a housing, connectors, and power cable connection.

This monitor can be attached to a wall mounting arm you purchase separately. Disconnect power before this procedure. Follow these steps:

1. Pull the screw covers off the back of the monitor.
2. Support the base and remove the screws.
3. Remove the base.

See next page for further installation instructions.

Install An Optional Wall Mounting Arm (Not supplied)

Technical diagram of a computer monitor with labeled parts and cable connection

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.

AOC's Model LM720 is compatible with the Ergotron line of mounting and arm solutions.

Contact Ergotron at 800-888-8458 or visit their web site at www.ergotron.com for more information on the many ways on which you can mount your AOC LCD monitor.

Adjusting the Viewing Angle

For optimal viewing, adjust the monitor's angle to your own preference.

• Hold the stand firmly when you change the monitor's angle.
• You can adjust the monitor's angle from -5^ to 25^ .
• 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.

How to Install INF & ICM File

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.

-5° 25°

Front Panel Buttons

H:64KHz V:60Hz R⊕ G⊕ Contrast 65 B⊕ EXIT R-→ 65 78 Auto AUTO Power Button Brightness Contrast Power Indicator Menu

Auto: Press this button to automatically set the H-Position, V-Position, Clock and Focus settings.

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.

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.

On-screen Display (OSD): Press the MENU button to open the OSD window and adjust settings on your monitor. (See next page.)

Adjusting the OSD Settings

Brightness Adjusts the picture's brightness Focus Adjusts focus (pixel clock signal) Clock Adjusts clock (pixel frequency) Contrast Adjusts the picture's contrast H:60KHz V:75Hz Red Adjusts the intensity of red R⊕ G⊕ B⊕ Contrast 70 Green Adjusts the intensity of green Blue Adjusts the intensity of blue Exit Saves changes and OSD disappears Reset Clears the current configuration and reapplies auto-configuration Color Temp Adjusts the color temperature to 7800°K (x=0.296, y=0.311) Color Temp Adjusts the color temperature to 6500°K (x=0.313, y=0.329) H-Position Adjusts the horizontal position of the picture V-Position Adjusts the vertical position of the picture Auto Center Automatically centers picture Language Adjusts the language selection DOS-mode selected DOS-mode resolution selection for 720x400 @70Hz and 640x400 @70Hz (see next page for details)

1. Press the MENU button to open the OSD window.
2. Press the < or > buttons until the desired function is highlighted.
3. Press MENU to open the function's window.

4. Press the < or > buttons to change the settings of the function.

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.

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.

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.

How to Optimize the DOS-mode

1. Insert the Windows 95/98/2000/ME INF Driver Disk into your floppy drive.
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.

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

pattern has vertical stripe noise, or the characters are twisted):

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.

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.

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.

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 • 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 present in the picture	• Move electrical devices away from the monitor. They may be causing electrical interference.
Power LED is ON (green or orange light is ON) but there is no video or picture.	• Press a key on the keyboard or wiggle the mouse to re-activate the monitor.• Make sure the video cable is properly connected to the computer.• Inspect the video cable and make sure none of the pins are bent.• 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
Screen image is not centered or sized properly	Adjust the CLOCK^1 and FOCUS^2 settings or press the AUTO button to automatically re-configure the monitor's settings.
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.

^1 CLOCK (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.
^2 FOCUS 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.
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)	VerticalFrequency	Resolution(in pixels)	VerticalFrequency
640 x 480 60 Hz	800 x 600 72.2 Hz
640 x 400 70 Hz	800 x 600 75 Hz
640 x 350 70 Hz	832 x 624 74.5 Hz
720 x 400 70 Hz	1024 x 768 60 Hz
640 x 480 72.8 Hz	1024 x 768 70 Hz
640 x 480 75 Hz	1024 x 768 75 Hz
640 x 480 66.67 Hz	1024 x 768 74.92 Hz
800 x 600 56.3 Hz	1280 x 1024 60 Hz
800 x 600 60.3 Hz	1280 x 1024 75 Hz

Specifications

LCD Panel	Driving system	TFT Color LCD
	Size 17" (43.2 cm)Diagonal
	Pixel pitch 0.264 mm (H) x0.264 mm (V)
	Viewable angle	150° (H) 125° (V)
Input Response time		16 milliseconds
		Video Red, Green, Blue Analog Interface
		Separate Sync.
		H-Frequency 30 kHz - 80 kHz
		V-Frequency 55-75 Hz
Display Colors 16.7 million colors
Dot Clock 135 MHz
Maximum Resolution 1280 x 1024 pixels

Plug & Play VESA DDC1/		2BTM
Input Connector D-Sub 15-pin
Input Video Signal Analog:		0.7 Vpp(standard),75 OHM, Positive
Maximum Screen Size Horizontal:		13.3" (338 mm)Vertical:10.6" (270 mm)
Power Source		100~240 VAC,50/60 Hz
Environmental Considerations		Operating Temp:32° to 104°F(0° to 40°C)
		Storage Temp:14° to 122°F(-10° to 50°C)
		Operating Humidity:20% to 90%
Weight		11.0 lbs. (5.0 Kg)
Front Panel Buttons Auto		BrightnessContrastPower SwitchMENU/ Exit
External Controls:	Functions Contrast	BrightnessFocusClockH-PositionV-PositionAuto-CenterLanguageDos-mode ResolutionSelected6500° K7800° KRGB Color temp.RecallExit
EPA ENERGY STAR®		Yes
Power Consumption (Maximum)		45 Watts
Regulatory Compliance		UL, CSA, FCC, TÜV/GS, CE, XP Logo

Optimal Viewing Mode

1280'x 1024 @ 60 Hz

16.0 in. (407 mm) 16.7 in. (423 mm) 8.5 in. (215 mm)

Factory Preset Timing Table

Standard	Resolution (in pixels)	Horizontal Frequency	Vertical Frequency
DOS-Mode 600 x 400 31	.47 kHz 70 Hz
	720 x 400 31.47 kHz 70 Hz
VGA 640 x 480 31.47 kHz	Hz 60 Hz
	640 × 480 35.00 kHz 66 Hz
	640 × 480 37.50 kHz 75 Hz
SVGA 800 × 600 37.879	kHz 60 Hz
	800 × 600 46.875 kHz 75 Hz
	832 × 624 49.725 kHz 75 Hz
XGA 1024 × 768 48.363	kHz 60 Hz
	1024 × 768 56.476 kHz 70 Hz
	1024 × 768 60.02 kHz 75 Hz
	1024 × 768 60.241 kHz 74.9 Hz
SXGA 1280 x 1024 64.00 kHz 60 Hz
		1280 x 1024 80.00 kHz 75 Hz

Connector Pin Assignment

Pin Number Description Pin Number Description
1	R	e	d
2 Green 10 Detect Cable
3	B	I	u
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

15-Pin Color Display Signal Cable