Acer H223HQ User Manual

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Acer LCD Monitor

User Guide

Copyright © 2008. Acer Incorporated.

All Rights Reserved.

Acer LCD Monitor User Guide

Original Issue: 08/2008

Changes may be made periodically to the information in this publication without obligation to notify any person of such revisions or changes. Such changes will be incorporated in new editions of this manual or supplementary documents and publications. This company makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims the implied warranties of merchantability or fitness for a particular purpose.

Record the model number, serial number, purchase date and place of purchase information in the space provided below. The serial number and model number are recorded on the label affixed to your computer. All correspondence concerning your unit should include the serial number, model number and purchase information.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronically, mechanically, by photocopy, recording or otherwise, without the prior written permission of Acer Incorporated.

Acer LCD Monitor User Guide

Model number: __________________________________

Serial number: ___________________________________

Date of purchase: ________________________________

Place of purchase: ________________________________

Acer and the Acer logo are registered trademarks of Acer Incorporated. Other companies' product names or trademarks are used herein for identification purposes only and belong to their respective companies.

iii

Information for your safety and comfort

Safety instructions

Read these instructions carefully. Keep this document for future reference. Follow all warnings and instructions marked on the product.

Special notes on LCD monitors

The following are normal with the 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 99.99% or more effective pixels. It may include blemishes of 0.01% or less such as a missing pixel or a pixel lit all the time.

Due to the nature of the LCD screen, an afterimage of the previous screen may remain after switching the image, when the same image is displayed for hours. In this case, the screen is recovered slowly by changing the image or turning off the power switch for a few hours.

Cleaning your monitor

Please carefully follow these guidelines when cleaning the monitor:

Always unplug the monitor before cleaning.

Use a soft cloth to wipe the screen and cabinet front and sides.

Connecting/disconnecting the device

Observe the following guidelines when connecting and disconnecting power from the LCD monitor:

Make sure the monitor is attached to its base before connecting the power cord to the AC power outlet.

Make sure both the LCD monitor and the computer are turned off before connecting any cable or unplugging the power cord.

If the system has multiple sources of power, disconnect power from the system by unplugging all power cords from the power supplies.

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Accessibility

Be sure that the power outlet you plug the power cord into is easily accessible and located as close to the equipment operator as possible. When you need to disconnect power from the equipment, be sure to unplug the power cord from the electrical outlet.

Safe listening

To protect your hearing, follow these instructions.

Gradually increase the volume until you can hear it clearly and comfortably and without distortion.

After setting the volume level, do not increase it after your ears have adjusted.

Limit the amount of time listening to music at high volume.

Avoid turning up the volume to block out noisy surroundings.

Turn the volume down if you can't hear people speaking near you.

Warnings

Do not use this product near water.

Do not place this product on an unstable cart, stand or table. If the product falls, it could be seriously damaged.

Slots and openings are provided for ventilation to ensure reliable operation of the product and to protect it from overheating. These openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug or other similar surface. This product should never be placed near or over a radiator or heat register, or in a built-in installation unless proper ventilation is provided.

Never push objects of any kind into this product through cabinet slots as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind onto or into the product.

To avoid damage of internal components and to prevent battery leakage, do not place the product on a vibrating surface.

Never use it under sporting, exercising, or any vibrating environment which will probably cause unexpected short current or damage internal devices.

Using electrical power

This product should be operated from the type of power indicated on the marking label. If you are not sure of the type of power available, consult your dealer or local power company.

Do not allow anything to rest on the power cord. Do not locate this product where people will walk on the cord.

If an extension cord is used with this product, make sure that the total

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ampere rating of the equipment plugged into the extension cord does not exceed the extension cord ampere rating. Also, make sure that the total rating of all products plugged into the wall outlet does not exceed the fuse rating.

Do not overload a power outlet, strip or receptacle by plugging in too many devices. The overall system load must not exceed 80% of the branch circuit rating. If power strips are used, the load should not exceed 80% of the power strip's input rating.

This product's power cord is equipped with a three-wire grounded plug. The plug only fits in a grounded power outlet. Make sure the power outlet is properly grounded before inserting the power cord plug. Do not insert the plug into a non-grounded power outlet. Contact your electrician for details.

Warning! The grounding pin is a safety feature. Using a power outlet that is not properly grounded may result in electric shock and/or injury.

Note: The grounding pin also provides good protection from unexpected noise produced by other nearby electrical devices that may interfere with the performance of this product.

Use the product only with the supplied power supply cord set. If you need to replace the power cord set, make sure that the new power cord meets the following requirements: detachable type, UL listed/CSA certified, type SPT-2, rated 7 A 125 V minimum, VDE approved or its equivalent, 4.6 meters (15 feet) maximum length.

Product servicing

Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage points or other risks. Refer all servicing to qualified service personnel.

Unplug this product from the wall outlet and refer servicing to qualified service personnel when:

the power cord or plug is damaged, cut or frayed

liquid was spilled into the product

the product was exposed to rain or water

the product has been dropped or the case has been damaged

the product exhibits a distinct change in performance, indicating a need for service

the product does not operate normally after following the operating instructions

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Note: Adjust only those controls that are covered by the operating instructions, since improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to normal condition.

Potentially explosive environments

Switch off your device in any area with a potentially explosive atmosphere and obey all signs and instructions. Potentially explosive atmospheres include areas where you would normally be advised to turn off your vehicle engine. Sparks in such areas could cause an explosion or fire resulting in bodily injury or even death. Switch off the device near gas pumps at service stations. Observe restrictions on the use of radio equipment in fuel depots, storage and distribution areas; chemical plants; or where blasting operations are in progress. Areas with a potentially explosive atmosphere are often, but not always, marked. They include below deck on boats, chemical transfer or storage facilities, vehicles using liquefied petroleum gas (such as propane or butane), and areas where the air contains chemicals or particles such as grain, dust or metal powders.

Additional safety information

Your device and its enhancements may contain small parts. Keep them out of the reach of small children.

IT Equipment Recycling Information

Acer is strongly committed to environmental protection and views recycling, in the form of salvaging and disposal of used equipment, as one of the company's top priorities in minimizing the burden placed on the environment.

We at Acer are very conscious of the environmental effects of our business and strive to identify and provide the best working procedures to reduce the environmental impact of our products.

For more information and help when recycling, please go to this website: http://global.acer.com/about/sustainability32.htm

Visit www.global.acer.com for further information on the features and benefits of our other products.

Disposal instructions

Do not throw this electronic device into the trash when discarding. To minimize pollution and ensure utmost protection of the global environment, please recycle. For more information on the Waste from Electrical and Electronics Equipment (WEEE) regulations, visit http://global.acer.com/about/sustainability.htm

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Mercury advisory

For projectors or electronic products containing an LCD/CRT monitor or display:lamp(s) inside this product contain mercury and must be recycled or disposed of according to local, state or federal laws. For more information, contact the Electronic Industries Alliance at

www.eiae.org. For lamp-specific disposal information, check www.lamprecycle.org.

LCD pixel statement

The LCD unit is produced with high-precision manufacturing techniques. Nevertheless, some pixels may occasionally misfire or appear as black or red dots. This has no effect on the recorded image and does not constitute a malfunction.

ENERGY STAR (for selected models) is a government program (public/private partnership) that gives people the power to protect the environment in a cost effective way and without sacrificing quality or product features. Products that earn the ENERGY STAR prevent greenhouse gas emissions by meeting strict energy efficiency guidelines set by the US Environmental

Protection Agency (EPA) and the US Department of Energy (DOE). In the average home, 75% of all electricity used to power home electronics is consumed while the products are turned off. ENERGY STAR qualified home electronic products in the off position use up to 50% less energy than conventional equipment. More information refers to http:// www.energystar.gov and http://www.energystar.gov/powermanagement.

As an ENERGY STAR partner, Acer Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

Note: The statement above is applicable only to Acer LCD monitor with an ENERGY STAR logo.

This product has been shipped enabled for power management:

Activate display’s Sleep mode within 15 minutes of user inactivity.

Activate computer’s Sleep mode within 30 minutes of user inactivity.

Wake the computer from Sleep mode by pushing the power button.

Tips and information for comfortable use

Computer users may complain of eyestrain and headaches after prolonged use. Users are also at risk of physical injury after long hours of working in front of a computer. Long work periods, bad posture, poor work habits, stress, inadequate working conditions, personal health and other factors greatly increase the risk of physical injury.

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Incorrect computer usage may lead to carpal tunnel syndrome, tendonitis, tenosynovitis or other musculoskeletal disorders. The following symptoms may appear in the hands, wrists, arms, shoulders, neck or back:

numbness, or a burning or tingling sensation

aching, soreness or tenderness

pain, swelling or throbbing

stiffness or tightness

coldness or weakness

If you have these symptoms, or any other recurring or persistent discomfort and/or pain related to computer use, consult a physician immediately and inform your company's health and safety department.

The following section provides tips for more comfortable computer use.

Finding your comfort zone

Find your comfort zone by adjusting the viewing angle of the monitor, using a footrest, or raising your sitting height to achieve maximum comfort. Observe the following tips:

refrain from staying too long in one fixed posture

avoid slouching forward and/or leaning backward

stand up and walk around regularly to remove the strain on your leg muscles

Taking care of your vision

Long viewing hours, wearing incorrect glasses or contact lenses, glare, excessive room lighting, poorly focused screens, very small typefaces and low-contrast displays could stress your eyes. The following sections provide suggestions on how to reduce eyestrain.

Eyes

Rest your eyes frequently.

Give your eyes regular breaks by looking away from the monitor and focusing on a distant point.

Blink frequently to keep your eyes from drying out.

Display

Keep your display clean.

Keep your head at a higher level than the top edge of the display so your eyes point downward when looking at the middle of the display.

Adjust the display brightness and/or contrast to a comfortable level for enhanced text readability and graphics clarity.

Eliminate glare and reflections by:

placing your display in such a way that the side faces the window or any light source

minimizing room light by using drapes, shades or blinds

using a task light

changing the display's viewing angle

Easy Lai / Director
Acer Computer (Shanghai) Limited

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using a glare-reduction filter

using a display visor, such as a piece of cardboard extended from the display's top front edge

Avoid adjusting your display to an awkward viewing angle.

Avoid looking at bright light sources, such as open windows, for extended periods of time.

Developing good work habits

Develop the following work habits to make your computer use more relaxing and productive:

Take short breaks regularly and often.

Perform some stretching exercises.

Breathe fresh air as often as possible.

Exercise regularly and maintain a healthy body.

Declaration of Conformity

We,

Acer Computer (Shanghai) Limited

3F, No. 168 Xizang medium road, Huangpu District, Shanghai, China

Contact Person: Mr. Easy Lai

Tel: 886-2-8691-3089 Fax: 886-2-8691-3000 E-mail: easy_lai@acer.com.tw

Hereby declare that: Product: LCD Monitor Trade Name: Acer Model Number: H223HQ

SKU Number: H223HQxxx("x" = 0~9, a ~ z, or A ~ Z) or blank

Is compliant with the essential requirements and other relevant provisions of the following EC directives, and that all the necessary steps have been taken and are in force to assure that production units of the same product will continue comply with the requirements.

EMC Directive 2004/108/EC as attested by conformity with the following harmonized standards:

EN55022:2006, AS/NZS CISPR22:2006, Class B

EN55024:1998 + A1:2001 + A2:2003

EN61000-3-2:2000 +A2:2005, Class D

EN61000-3-3:1995 + A1:2001

Low Voltage Directive 2006/95/EC as attested by conformity with the following harmonized standard:

EN60950-1:2001 + A11:2004

RoHS Directive 2002/95/EC on the

Restriction of the Use of certain

Hazardous Substances in Electrical and

Electronic Equipment.

x

Federal Communications Commission

Declaration of Conformity

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

The following local manufacturer/importer is responsible for this declaration:

Product name:

LCD Monitor

Model number:

H223HQ ("x" = 0 - 9, a - z, or A - Z or blank)

SKU number:

H223HQxxx

 

("x" = 0 - 9, a - z, or A - Z or blank)

Name of responsible party:

Acer America Corporation

Address of responsible party:

333 West San Carlos St.

 

San Jose, CA 95110

 

USA

Contact person:

Acer Representative

Tel:

1-254-298-4000

Fax:

1-254-298-4147

 

 

Information for your safety and comfort

iii

Safety instructions

iii

Special notes on LCD monitors

iii

Cleaning your monitor

iii

Connecting/disconnecting the device

iii

Accessibility

iv

Safe listening

iv

Warnings

iv

Using electrical power

iv

Product servicing

v

Additional safety information

vi

IT Equipment Recycling Information

vi

Disposal instructions

vi

LCD pixel statement

vii

Tips and information for comfortable use

vii

Declaration of Conformity

ix

Federal Communications Commission

 

Declaration of Conformity

x

Unpacking

1

Attaching the base (for selected models)

2

Attaching the base (for selected models)

3

Screen position adjustment

4

Connecting the power cord

4

Power saving

4

Connecting the docking device

 

(for selected models)

5

Display Data Channel (DDC)

5

Connector pin assignment

5

15-pin color display signal cable

5

24-pin color display signal cable

6

19-pin color display signal cable*

6

Standard timing table

7

Installation

8

Users controls

9

Front panel controls

9

Acer eColor Management

10

Operation instructions

10

Features and benefits

10

Adjusting the OSD settings

11

Adjusting the picture quality

11

Adjusting the OSD position

12

Adjusting the setting

13

Product information

14

Contents

Troubleshooting

15

VGA mode

15

DVI/HDMI* mode

16

1

Unpacking

Please check that the following items are present when you unpack the box, and save the packing materials in case you need to ship or transport the monitor in the future.

LCD monitor

User guide

Quick start guide

 

 

 

English

D-sub cable

DVI cable (only dual-

AC power cord

input models)

 

 

 

 

 

Audio Cable (Option)

English

2

Attaching the base (for selected models)

Note: Remove the monitor and monitor base from its packaging. Carefully place the monitor face-down on a stable surface -- use a cloth to avoid scratching the screen.

2

1

1Attach the the monitor stand arm to the base.

2Ensure that the base is locked onto the monitor stand arm.

Note: Take care when performing the installation to avoid injuring yourself.

3

Screen position adjustment

To optimize the viewing position, you can adjust the monitor tilt, using both of your hands to hold the edges of the monitor. The monitor can be adjusted to 15 degrees up or 5 degrees down.

Connecting the power cord

Check first to make sure that the power cord you use is the correct type required for your area.

The monitor has a universal power supply that allows operation in either 100/120 V AC or 220/240 V AC voltage area. No useradjustment is required.

Plug one end of the power cord to the AC inlet, and plug the other end into an AC outlet.

For units using 120 V AC:

Use a UL-listed cord set, type SVT wire and plug rated 10 A/125 V.

For units using 220/240 V AC:

Use a cord set consisting of H05VV-F cord and plug rated 10 A/250 V. The cord set should have the appropriate safety approvals for the country in which the equipment will be installed.

Power saving

The monitor will be switched to "power saving" mode by the control signal from the display controller, as indicated by the amber-colored power LED.

Mode

LED light

On

White

 

 

Power saving

Amber

 

 

The power saving mode will be kept until a control signal has been detected or the keyboard or mouse is activated. The recovery time from "power saving" mode back to "on" is around 3 seconds.

English

English

4

Display Data Channel (DDC)

To make installation easier, so long as your system supports the DDC protocol, the monitor is able to plug-and-play. The DDC is a communication protocol through which the monitor automatically informs the host system about its capabilities; for example, supported resolutions and corresponding timing. The monitor supports the DDC2B standard.

Connector pin assignment

 

 

 

1

5

 

 

 

6

10

15-pin color display signal cable

11

15

 

 

PIN No.

Description

PIN No.

Description

 

1

Red

9

+5 V

 

2

Green

10

Logic ground

 

3

Blue

11

Monitor ground

 

4

Monitor ground

12

DDC-serial data

 

5

DDC-return

13

H-sync

 

6

R-ground

14

V-sync

 

7

G-ground

15

DDC-serial clock

 

8

B-ground

 

 

 

5

24-pin color display signal cable

PIN No.

Description

PIN No.

Description

1

TMDS data 2-

13

NC

 

 

 

 

2

TMDS data 2+

14

+5 V power

 

 

 

 

3

TMDS data 2/4 shield

15

GND (return for +5 V hsync.vsync)

 

 

 

 

4

NC

16

Hot-plug detection

 

 

 

 

5

NC

17

TMDS data 0-

 

 

 

 

6

DDC clock

18

TMDS data 0+

 

 

 

 

7

DDC data

19

TMDS data 0/5 shield

 

 

 

 

8

NC

20

NC

 

 

 

 

9

TMDS data 1-

21

NC

 

 

 

 

10

TMDS data 1+

22

TMDS clock shield

 

 

 

 

11

TMDS data 1/3 shield

23

TMDS clock+

 

 

 

 

12

NC

24

DDC TMDS clock-

 

 

 

 

19-pin color display signal cable*

 

 

 

1917151311 9 7 5 3

1

 

 

 

1816141210 8 6 4

2

PIN No.

Description

PIN No.

Description

 

1

TMDS Data2+

2

TMDS Data2 Shield

 

3

TMDS Data2–

4

TMDS Data1+

 

5

TMDS Data1 Shield

6

TMDS Data1–

 

7

TMDS Data0+

8

TMDS Data0 Shield

 

9

TMDS Data0–

10

TMDS Clock+

 

11

TMDS Clock Shield

12

TMDS Clock–

 

13

CEC

14

Reserved (N.C. on device)

 

15

SCL

16

SDA

 

17

DDC/CEC Ground

18

+5V Power

 

19

Hot Plug Detect

 

 

 

English

* only for certain models

7

Installation

To install the monitor on your host system, please follow the steps below:

Steps

1Connect the video cable

a Make sure both the monitor and computer are switched off. b Connect the VGA video cable to the computer.

c Connect the digital cable (only for dual-input models).

(1)Make sure both the monitor and computer are switched off.

(2)Connect one end of the 24-pin DVI* cable to the back of the monitor and the other end to the computer's port.

(3)Connect one end of the 19-pin HDMI* cable to the back of the monitor and the other end to the computer's port.

2Connect the power cord

Connect the power cord to the monitor, then to a properly grounded AC outlet.

3Turn on the monitor and computer

Turn on the monitor first, then the computer. This sequence is very important.

4If the monitor does not function properly, please refer to the troubleshooting section to diagnose the problem

English

* for selected models

English

8

Users controls

Front panel controls

 

Icon

Item

Description

 

 

 

 

 

 

 

 

 

Power

Turns the monitor on/off. White indicates power on.

 

 

button/

Amber indicates standby/power saving mode.

 

 

indicator

 

 

 

 

 

 

 

 

 

/

Minus / Plus

If the OSD is active, press the Minus or Plus buttons

 

 

 

to toggle between the OSD options.

 

 

 

 

 

 

 

 

OSD

Press to view the OSD. Press again to enter a

 

 

functions

selection in the OSD. Please refer to "Adjusting the

 

 

 

OSD settings" on page 11 for more details.

 

 

 

 

 

 

 

 

Auto adjust

If the OSD is active, press Auto to exit the OSD.

 

 

button/Exit

Once the OSD is inactive, press Auto and the

 

 

 

monitor will automatically optimize the display

 

 

 

position, focus, and clock of your display.

 

 

 

 

 

 

 

 

Empowering

Press the Empowering Key to open the Acer eColor

 

 

Key

Management OSD and access the scenario modes.

 

 

 

Please refer to "Acer eColor Management" on page

 

 

 

10 for more details.

 

 

 

 

 

 

INPUT

Input Key

Use Input key to select between three different video

 

 

 

source that may be connected to your monitor.

 

 

 

(a) VGA input (b) DVI-D input (c) HDMI input

 

 

 

As you cycle through the inputs you will see the

 

 

 

following messages on right top side of screen to

 

 

 

indicate currently selected input source. It may take

 

 

 

1 or 2 seconds for the image to appear .

 

 

 

VGA or DVI-D or HDMI

 

 

 

If either VGA or DVI-D input is selected and both

 

 

 

VGA and DVI-D cables are not connected, a floating

 

 

 

dialog box as shown below appears:

 

 

 

"No Cable Connect"or "No Signal"

 

 

 

 

 

 

9

Acer eColor Management

Operation instructions

1Press the Empowering Key to open the Acer eColor Management OSD and access the scenario modes.

2 Press " " or " " to select the mode.

3Press the Auto-adjust button to confirm the mode and exit Acer eColor Management.

Features and benefits

Main

 

menu Sub menu item

Description

icon

 

 

 

User mode

User-defined. Settings can be fine-tuned to suit any

 

situation.

 

 

Text mode

Optimal balance of brightness and contrast to

 

prevent eyestrain. The most comfortable way to

 

read onscreen text.

 

 

Standard mode

Default settings. Reflects native display capability.

 

 

Graphic mode

Enhances colors and emphasizes fine detail. Pictures

 

and photographs appear in vibrant colors with

 

sharp detail.

 

 

Movie mode

Displays scenes in clearest detail. Presents great

 

visuals, even in unsuitably-lit environments.

 

 

English

10

Adjusting the OSD settings

Note: The following content is for general reference only. Actual product specifications may vary.

The OSD can be used for adjusting the settings of your LCD Monitor.

Press the Menu key to open the OSD. You can use the OSD to adjust the picture quality, OSD position and general settings. For advanced settings, please refer to following page:

Adjusting the picture quality

English

1

Press the Menu key to bring up the OSD.

2

Using the

/

keys, select

Picture from the OSD. Then navigate to the

 

picture element you wish to adjust.

3

Use the

/

keys to adjust the sliding scales.

4The Picture menu can be used to adjust the current Brightness, Contrast, Colour Temp, Auto Config and other image-related qualities.

English

11

Adjusting the OSD position

1Press the Menu key to bring up the OSD.

2Using the directional keys, select OSD from the onscreen display. Then navigate to the feature you wish to adjust.

12

Adjusting the setting

English

1 Press the Menu key to bring up the OSD.

2 Using the / keys, select

Setting from the OSD. Then navigate to the

feature you wish to adjust.

 

3The Setting menu can be used to adjust the screen Menu Language and other important settings.

English

13

Product information

1 Press the Menu key to bring up the OSD.

2 Using the / keys, select Information from the OSD. Then the basic information of LCD monitor will show up for current input.

14

Troubleshooting

Before sending your LCD monitor for servicing, please check the troubleshooting list below to see if you can self-diagnose the problem.

VGA mode

Problem

LED status

Remedy

No picture visible

White

Using the OSD, adjust brightness and

 

 

contrast to maximum or reset to their

 

 

default settings.

 

 

 

 

Off

Check the power switch.

 

 

Check if the power cord is properly

 

 

connected to the monitor.

 

 

 

 

Amber

Check if the video signal cable is

 

 

properly connected at the back of

 

 

monitor.

 

 

Check if the computer system is

 

 

switched on and in power saving/

 

 

standby mode.

 

 

 

Unstable picture

 

Check if the specification of graphics

 

 

adapter and monitor is in compliance

 

 

which may be causing the input signal

 

 

frequency mismatch.

 

 

 

Abnormal picture

Image is missing,

Using the OSD, adjust focus, clock, H-

 

off-center, too

position and V-position with non-

 

large or too

standard signals.

 

small on the

 

 

screen.

Check the display setting on your

 

 

system. In case of a missing image,

 

 

please select another resolution or

 

 

vertical refresh rate.

 

 

Wait for a few seconds after adjusting

 

 

the size of the image before changing

 

 

or disconnecting the signal cable or

 

 

switching off the monitor.

 

 

 

English

15

DVI/HDMI* mode

Problem

LED status

Remedy

No picture visible

White

Using the OSD, adjust brightness and

 

 

contrast to maximum or reset to their

 

 

default settings.

 

 

 

 

Off

Check the power switch.

 

 

Check if the AC power cord is properly

 

 

connected to the monitor.

 

 

 

 

Amber

Check if the video signal cable is

 

 

properly connected at the back of

 

 

monitor.

 

 

Check that the computer system is

 

 

switched on and in power saving/

 

 

standby mode.

 

 

 

* for selected models

 

 

English