Acer Xb240ha Users Guide

							Acer LCD Monitor
Users Guide
 
						

							Changes may be made periodically to the information in this publication without obligation 
to notify any person of such revisions or change s. Such changes will be incorporated in new 
editions of this manual or  supplementary documents and publ ications. 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, purch ase 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, sto red in a retrieval system, or transmitted, in 
any form or by any means, electronically, mechan ically, by photocopy, recording or otherwise, 
without the prior written permission of Acer Incorporated.
Model number: __________________________________
Serial number: ___________________________________
Date of purchase: ________________________________
Place of purchase: ________________________________ Copyright © 2013  . Acer Incorporated.
All Rights Reserved.
Acer LCD Monitor Users Guide
Original Issue: 01/20
Acer LCD Monitor Users Guide
Acer and the Acer logo are re gistered trademarks of Acer Incorporated. Other companies 
product names or trademarks are used herein for identification purposes only and belong to 
their respective companies. 13
 
						

							iii
Special notes on LCD monitors
The following are n
 ormal 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  sl
 ightly uneven brightness on the screen depending on the 
desktop pattern you use.
•The LCD screen has 99.99% o r
  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.
Information for your safety and 
comfort
Safety instructions
Read these inst ru
 ctions carefully. Keep 
this document for future reference. 
Follow all warnings and instruct ions marked on the product.
Cleaning your monitor
Please carefully follow thes
 e guidelines when cleaning the monitor:
•Always un
plug
  the monitor before cleaning.
•Use a soft cloth to wipe the scr
een a
 nd 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 attache d
  to its base before connecting the power 
cord to the AC power outlet.
•Make sure both th e LC
 D monitor and the computer are turned off before 
connecting any cable or unplugging the power cord.
•If the system  has m
 ultiple sources 
of power, disconnect power from the 
system by unplugging all powe r cords from the power supplies. 
						

							iv
Accessibility
Be sure th
 at 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 you r
  hearing, follow these instructions.
•Gradually increase the vo

lume until you 
can hear it clearly and comfortably 
and without distortion.
•After settin g th
 e volume level, do not increase it after your ears have 
adjusted.
•Limit the amount of time listeni ng
  to music at high volume.
•Avoid tu
rnin
 g up the volume to block out noisy surroundings.
•Turn the volu

me down if you cant hear people speaking near you.
Warnings
•Do no
t us
 e 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 ope ning
 s are provided fo
r 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  ob
 jects of any kind into 
this product through cabinet slots as 
they may touch dangerous voltage po ints 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 damag e of intern
 al components and to prevent battery leakage, 
do not place the product on a vibrating surface.
•Never use it under sporting , exe
 rcising, or any vibrating environment 
which will probably cause unexpected short current or damage internal 
devices.
Using electrical power
•This produ ct sho
 uld 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 allo w anythin
 g 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 thi
 s product, make sure that the total  
						

							v
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 strips input rating.
•This products 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 grou nded 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, 4.5 
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
 
						

							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 ga s pumps at service stations. Observe 
restrictions on the use of radio eq uipment in fuel depots, storage and 
distribution areas; chemical plants; or wher e 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.
Suitable for use in offices with controlled luminous environments, 
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 companys 
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 be st working procedures to reduce the 
environmental impact of our products.
For more information and help when recycling, please go to this website:
Visit www. .com
 for further information on the features and benefits 
of our other products.
http://www.acer-group.com/public/Sustainability
acer-group
to avoid disturbing reflections from the screen.
 
						

							vii
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 
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. 
http://www.acer‐group.com/public/Sustainability
 
						

							viii
This product has b
 een shipped enabled for power management:
•Activate display’s Sleep mode with
in 15 m
 inutes of user inactivity.
•Activate compu
t
 er’s Sleep mode within 30 minutes of user inactivity.
•Wake the comp
u
 ter from Sleep mode by pushing the power button.
Tips and information 
for co
 mfortable use
Computer 
u
 sers 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, person al 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 b u
 rning or tingling sensation
•aching, soreness or ten
d
 erness
•pain, swelling or thro
bb
 ing
•stif
fness
  or tightness
•coldness or
 we
 akness
If you have these symptoms, or any ot her recurring or persistent discomfort 
and/or pain related to computer use, consult a physician immediately and 
inform your companys heal th and safety department.
The following section provides tips  for more comfortable computer use.
Finding your comfort zone
Find yo
ur 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:
•refrai n from s
 taying too long in one fixed posture
•avoid slou
ch
 ing forward and/or leaning backward
•stand up and wal
k around regularly  to remove the strain on your leg 
mu
 scles 
						

							ix
Taking care of your visi
 on
Long viewi
ng h
 ours, 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 ey es frequently.
•Give your eyes regular breaks b y
  looking away from the monitor and 
focusing on a distant point.
•Blink frequently t o
  keep your eyes from drying out.
Display
•Keep your displ a
 y clean.
•Keep your head
 at a hig
 her level than the top edge of the display so your 
eyes point downward when looking at the middle of the display. 
•Adjust the di sp
 lay brightness and/or 
contrast to a comfortable level for 
enhanced text readability and graphics clarity.
•Eliminate gla r
 e and reflections by:
•placing y
o
 ur display in such a way that the side faces the window or 
any light source
•minimizing roo m
  light by using drapes, shades or blinds
•using a task light
•cha
nging the displa y

 s viewing angle
•using a glare-redu
ction
  filter
•using a dis
p
 lay visor, such as a piece of cardboard extended from the 
displays top front edge
•Avoid adjus t
 ing your display to an awkward viewing angle.
•Av
oid  look
ing 
 at bright light sources, such as open windows, for extended 
periods of time.
Developing  
 good work habits
Develop the following
 work h
 abits 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 regul
ar
 ly and maintain a healthy body. 
						

							 
                                                                                                                                               Acer Incorporated 
8F, 88, Sec. 1, Xintai 5th Rd., Xizhi 
                                                                                                                                                                               New Taipei City 221, Taiwan
 
Declaration of Conformity We,  
Acer Incorporated  
8F, 88, Sec. 1, Xintai 5th Rd., Xizhi, New Taipei City 221, Taiwan 
Contact Person: Mr. RU Jan, e-mail:[email protected] 
And, 
Acer Italy s.r.l 
Via Lepetit, 40, 20020 La inate (MI) Italy 
Tel: +39-02-939-921 ,Fax: +39-02 9399-2913 
www.acer.it
  Declare under our own respons ibility that the product: 
Product:    LCD Monitor 
Trade Name:   Acer 
Model Number:   ;%+
SKU Number:  ;%+ xxxxxx; 
(“x” = 0~9, a ~ z,  A ~ Z, or blank)
 To which this declaration refers conforms to the relevant standard or other standardizing documents:   EN 55022:2006/A1:2007 Class B; EN 55024:2010 
  N 61000-3-2:2006+A1:2009+A2:2009, Class D 
  EN61000-3-3:2008 
  EN 60950-1:2006/A11:2009/A1:2010 +A12:2011 
  EN50581:2012 
 
 
We hereby declare above product is in compliance w ith the essential requirements and other relevant 
provisions of EMC Directive 200 4/108/EC, Low Voltage Directive  2006/95/EC, and RoHS Directive 
2011/65/EU and Directive 2009/125/EC with regard to esta blishing a framework for the setting of ecodesign 
requirements for energy-related product. 
Year to begin affixing CE marking 2013. 
 
 
 
 
_______________________________ 
        RU Jan / Sr. Manager                                               Date 
Regulation, Acer Inc. 
                  Feb.13, 2013