Acer H235HL User Manual

Acer LCD Monitor

User Guide

Copyright © 2008. Acer Incorporated.
All Rights Reserved.

Acer LCD Monitor User Guide
Original Issue: 0 /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.

8

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.

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.

iii

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.

iv

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

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.

v

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

vi

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://www.acer-group.com/public/Sustainability/sustainability01.htm

http://www.acer-group.com/public/Sustainability/sustainability04.htm

Visit www.global.acer.com
of our other products.

for further information on the features and benefits

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

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.

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.

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.

vii

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

viii

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

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.

x

Acer Incorporated

8F, 88, Sec. 1, Hsin Tai Wu Rd., Hsichih

Fax : [phone]

Taipei Hsien 221, Taiwan

Tel : [phone]

Declaration of Conformity

We,

Acer Incorporated

8F, 88, Sec. 1, Hsin Tai Wu Rd., Hsichih, Taipei Hsien 221, Taiwan
Contact Person: Mr. Easy Lai, E-mail: [e-mail]

And,

Acer Europe SA

Via Cantonale, Centro Galleria 2 6928 Manno Switzerland

Hereby declare that:

Product: LCD Monitor
Trade Name: Acer
Model Number:

SKU Number: H235HLxxxxx (“x” = 0~9, a ~ z, or A ~ Z)

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, AS/NZS CISPR22 Class B.

-. EN55024

-. EN61000-3-2, Class D

-. EN61000-3-3

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

-. EN60950-1

RoHS Directive 2002/95/EC on the Restriction of the Use of certain Hazardous Substances
in Electrical and Electronic Equipment:

-. The maximum concentration values of the restricted substances by weight in homogenous material are:

Lead 0.1% Polybrominated Biphenyls (PBB’s) 0.1%
Mercury 0.1% Polybrominated Diphenyl Ethers (PBDE’s) 0.1%
Hexavalent Chromium 0.1% Cadmium 0.01%

Directive 2005/32/EC of the European Parliament and of the Council with regard to Eco­design Requirements.

Year to begin affixing CE marking 2010.

_______________________________

Easy Lai /Manager
Regulation, Acer Inc.

H235HL

Jan. 7, 2010

Date

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:
SKU number:

Name of responsible party: Acer America Corporation
Address of responsible party: 333 West San Carlos St.

Contact person: Acer Representative
Tel: [phone]
Fax: [phone]

H2 L ("x" = 0 - 9, a - z, or A - Z or blank)

35H

H2 HLxxx

35

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

San Jose, CA 95110
USA

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

Contents

Installation 8
Users controls 9

Front panel controls 9
Acer eColor Management 10

Operation instructions 10

Features and benefits 10
Adjusting the OSD settings

Adjusting the picture quality 1

Adjusting the OSD position 1

Adjusting the setting 1

Product information 1

10

0
1
2
3

Troubleshooting 14

VGA mode 14
DVI/HDMI* mode

15

English

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.

1

LCD monitor Quick start guide

D-sub cable

User guide

DVI cable

AC power cord

Audio Cable

2

English

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.

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

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

English

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.

3

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

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.

Blue

4

English

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

15

11

15-pin color display signal cable

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
8B-ground

10

6

15

English

24-pin color display signal cable

1357911

810 462

13151719

12141618

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
5NC 17TMDS data 0­6DDC clock 18TMDS data 0+
7 DDC data 19 TMDS data 0/5 shield
8NC 20NC

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*

5

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

* only for certain models

English

Installation

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

Steps

1 Connect 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

(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.

2 Connect the power cord

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

3 Turn on the monitor and computer

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

4 If the monitor does not function properly, please refer to the

troubleshooting section to diagnose the problem

.

7

* for selected models

8

English

Users controls

Front panel controls

Icon Item Description

,QSXW

OSD
functions

Input

Key

Press to view the OSD. Press again to enter a
selection in the OSD.

Use key to select between three different video

source that may be connected to your

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

,QSXW

monitor.

$XWR

Auto adjust
button/Exit

Empowering
Key

Power
button/
indicator

As you cycle through the inputs you will see the
following
indicate
1 or 2

VGA or DVI-D or HDMI

If either VGA or DVI-D input is selec ed and both
VG

dialog box as

"

No Cable Connect or

If the OSD is active, press Auto to exit the OSD.
Once the OSD is inactive, press Auto and the
monitor will automatically optimize the display
position, focus, and clock of your display.

Press to adjust volume.

Press the Empowering Key to open the Acer eColor
Management OSD and access the scenario modes.
Please refer to "Acer eColor Management" on page
10 for more details.

Turns the monitor on/off. Blue indicates power on.
Amber indicates standby/power saving mode.

messages on right top side of screen to

currently

seconds

DVI-D cables are not connected, a floating

A and

selected input source. It may take

for the image to appear .

t

shown below appears:

"

"

No Signal

"

Acer eColor Management

English

Operation instructions

1 Press the Empowering Key to open the Acer eColor Management OSD

and access the scenario modes.

2 Press " " or " " to select the mode.
3 Press the Auto-adjust button to confirm the mode and exit Acer eColor

Management.

Features and benefits

9

Main
menu
icon

Sub menu item Description

Standard mode Default settings. Reflects native display capability.

Text mode Optimal balance of brightness and contrast to

prevent eyestrain. The most comfortable way to
read onscreen text.

Pictrue 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.

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

situation.

10

English

/

/

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

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 th
4 The Picture menu can be used to adjust the current Brightness, Contrast,

Colour Temp, Auto Config and other image-related qualities.

e keys to adjust the sliding scales.

11

English

/

Adjusting the setting

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.

3 The Setting menu can be used to adjust the screen Menu Language and

other important settings.

12

English

/

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.

English

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 Blue 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

Unstable picture Check if the specification of graphics

Abnormal picture Image is missing,

off-center, too
large or too
small on the
screen.

properly connected at the back of
monitor.

Check if the computer system is
switched on and in power saving/
standby mode.

adapter and monitor is in compliance
which may be causing the input signal
frequency mismatch.

Using the OSD, adjust focus, clock, H­position and V-position with non­standard signals.

Check the display setting on your
system. In case of a missing image,
please select another resolution or
vertical refresh rate.

13

Wait for a few seconds after adjusting
the size of the image before changing
or disconnecting the signal cable or
switching off the monitor.

14

English

DVI/HDMI* mode

Problem LED status Remedy

No picture visible Blue 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