Acer CB342CU User manual

Acer LCD Monitor
User's Guide

Copyright © 2022. Acer Incorporated.
All Rights Reserved.
Acer LCD Monitor User's Guide
Original Issue: 03/2022
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's 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
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.
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.
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.
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.

iv
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.

v
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,
4.5 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
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.

vi
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:
https://www.acer-group.com/sustainability/en/our-products-environment.html
Visit www.acer-group.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
https://www.acer-group.com/sustainability/en/our-products-environment.html

vii
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.
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.
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.

viii
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.
• In order to prevent damage to the monitor, do not lift the monitor by its base.

ix
EU Declaration of Conformity
We,
Acer Incorporated
8F, 88, Sec. 1, Xintai 5th Rd., Xizhi, New Taipei City 221
And,
Acer Italy s.r.l.
Viale delle Industrie 1/A, 20044 Arese (MI), Italy
Tel: [phone] ,Fax: [phone]
www.acer.it
Product: LCD Monitor
Trade Name: ACER
Model Number: CB342CU
SKU Number:
CB342CU xxxxxxxxx
(“x” = 0~9, a ~ z, A ~ Z, or blank)
We, Acer Incorporated, hereby declare under our sole responsibility that the product described above is in
conformity with the relevant Union harmonization legislations as below Directive and following harmonized
standards and/or other relevant standards have been applied:
EMC Directive: 2014/30/EU
EN55032:2015+AC:2020 Class B
EN IEC 61000-3-2:2019 Class D
EN 55035:2017+A11: 2020
EN61000-3-3:2013+A1: 2019
LVD Directive: 2014/35/EU
EN 62368-1: 2014+ A11:2017
RoHS Directive: 2011/65/EU
EN IEC 63000:2018
ErP Directive: 2009/125/EC
(EU) 2019/ 2021; EN 50564:2011
Year to begin affixing CE marking: 2022.
_______________________________
Jun. 13, 2022
RU Jan / Sr. Manager Date
Acer Incorporated (New Taipei City)
CE Declaration of Conformity

x
Federal Communications Commission
Declaration of Conformity
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: LCD Monitor
Model Number: CB342CU
SKU Number: CB342CU xxxxxx;
(“x” = 0~9, a ~ z, A ~ Z or Blank)
Name of Responsible Party: Acer America Corporation
Address of Responsible Party: 333 West San Carlos St.
Suite 1500
San Jose, CA 95110
U. S. A.
Contact Person:
Acer Representative
Phone No.: 254-298-4000
Fax No.: 254-298-4147
Acer America Corporation
333 West San Carlos St., Suite 1500
San Jose, CA 95110, U. S. A.
Tel : [phone]
Fax : [phone]
www.acer.com

xi
A third-party certification according to ISO 14024
Say hello
to a more sustainable product
IT products are associated with a wide range of sustainability risks
throughout their life cycle. Human rights violations are common in the
factories. Harmful substances are used both in products and their
manufacture. Products can often have a short lifespan because of poor
ergonomics, low quality and when they are not able to be repaired or
upgraded.
This product is a better choice. It meets all the criteria in TCO Certified,
the world’s most comprehensive sustainability certification for IT
products. Thank you for making a responsible product choice, that help
drive progress towards a more sustainable future!
Criteria in TCO Certified have a life-cycle perspective and balance
environmental and social responsibility. Conformity is verified by
independent and approved verifiers that specialize in IT products, social
responsibility or other sustainability issues. Verification is done both
before and after the certificate is issued, covering the entire validity
period. The process also includes ensuring that corrective actions are
implemented in all cases of factory non-conformities. And last but not
least, to make sure that the certification and independent verification is
accurate, both TCO Certified and the verifiers are reviewed regularly.
Want to know more?
Read information about TCO Certified, full criteria documents, news and
updates at tcocertified.com. On the website you’ll also find our Product
Finder, which presents a complete, searchable listing of certified
products.
Toward sustainable IT products
TCO Certified

xii
ENERGYSTAR®
Acer’s ENERGY STAR qualified products save you money by reducing energy
costs and helps protect the environment without sacrificing features or
performance. Acer is proud to offer our customers products with the ENERGY
STARmark.
What is ENERGYSTAR?
Products that are ENERGY STAR qualified use less energy and prevent
greenhousegasemissionsbymeetingstrictenergyefficiencyguidelinessetbythe
U.S. Environmental Protection Agency. Acer is committed to offer products and
servicesworldwidethathelpcustomerssavemoney,conserveenergyandimprove the
quality of our environment. The more energy we can save through energy
efficiency, the more we reduce greenhouse gases and the risks of climate change.
More information refers to http://www.energystar.gov.
Acer ENERGY STAR qualified products:
• Produce less heat and reduce cooling loads, and warmerclimates.
• Automatically go into “display sleep” within 5 minutesof inactivity.
• Wake the monitor when it is in Active Off mode, move the mouse or press any
keyboardkey.
ENERGY STAR and the ENERGY STAR mark are registered U.S.marks
ENERGYSTAR

Special notes on LCD monitors iii
Information for your safety and comfort iii
Safety instructions iii
Cleaning your monitor iii
Connecting/disconnecting the device iii
Accessibility iii
Safe listening iv
Warnings iv
Using electrical power iv
Product servicing v
Additional safety information v
IT Equipment Recycling Information vi
Disposal instructions vi
LCD pixel statement vi
Tips and information for comfortable use vii
CE Declaration of Conformity ix
Federal Communications Commission
Declaration of Conformity x
TCO Certified xi
ENERGYSTAR xii
Unpacking 1
Attaching/removing the base 2
Screen position adjustment 3
Connecting the power cord 5
Power saving 5
Display Data Channel (DDC) 5
Connector pin assignment 6
Standard timing table 8
Installation 9
Battery and remote control instructions 10
User controls 12
How to adjust a setting 13
Mode Management Menu 13
Adjusting the OSD settings 14
Adjusting the picture quality 14
Adjusting the Color setting 15
Adjusting the Audio setting 16
Adjusting the Performance setting 16
Adjusting the OSD setting 17
Product the System setting 18
Product the Information setting 19
Troubleshooting 20
HDMI/DP model 20

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 Quick start guide
LCDmonitor CB2 series-CB342CU
USER GUIDE
AC power cord *DP cable (Option)
*HDMI cable (Option) *USB cable (Option)
Remot control *USB Type C cable(Option)
MODES
DP ALT
RC-00772
*Also the Replaceable parts required by the TCO Certified.

2
Attaching/removing the base
Installation: Align the base with the stand and push the base towards the top of the monitor, and
then rotate the base clockwise. Tighten the screw clockwise.
Remove: Reverse the steps to remove the base.
Note: Take care when performing the installation to avoid injuring yourself.
If installing with a wall mounting kit, install 2 extension columns into the copper stud in the back
cover (as below picture),it is recommended to use VESA mounting kit(100x100) with M4x14(L)mm
screws to fix your monitor on the wall.

3
Screen position adjustment
In oder to optimize the best viewing position, you can adjust the tilt of the monitor.
• Height Adjustment
After pressing the top of the monitor then you can adjust the height of the monitor.
2
150m
m
1
• Tilt
Please see the illustration below for an example of the tilt range.
Only at the highest point can 35 degrees of recline be offered for the angle of elevation.
-5°
35°

4
• Swivel
With the built-in pedestal, you can swivel the monitor for the most comfortable viewing angle.
360°360°

5
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 user-adjustment 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 orange-colored power LED.
Model LED light
On Blue
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.
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.

6
Connector pin assignment
19-pin color display signal cable
PIN No. Description PIN No. Description
1 TMDS data 2+ 11 TMDS clock shield
2 TMDS data 2 shield 12 TMDS clock-
3 TMDS data 2- 13 CEC
4 TMDS data 1+ 14 DDC-serial data
5 TMDS data 1 shield 15 SCL
6 TMDS data 1- 16 SDA
7 TMDS data 0+ 17 DDC/CEC Ground
8 TMDS data 0 shield 18 +5V Power
9 TMDS data 0- 19 Hot Plug Detect
10 TMDS clock+

7
20-pin color display signal cable
PIN No. Description PIN No. Description
1 Lane0 (p) 11 GND
2 GND 12 Lane3 (n)
3 Lane0 (n) 13 Config 1
4 Lane1 (p) 14 Config 2
5 GND 15 AUX_CH (n)
6 Lane1 (n) 16 GND
7 Lane2 (p) 17 AUX_CH (p)
8 GND 18 Hot Plug Detect
9 Lane3 (n) 19 DP Power_Return
10 Lane3 (p) 20 DP Power
24-pin USB Type C cable
PIN No. Description PIN No. Description
A1 GND B12 GND
A2 SSTXp1 B11 SSTXp1
A3 SSTXn1 B10 SSTXn1
A4 VBUS B9 VBUS
A5 CC1 B8 CC1
A6 Dp1 B7 Dp1
A7 Dn1 B6 Dn1
A8 SBU1 B5 SBU1
A9 VBUS B4 VBUS
A10 SSTXn2 B3 SSTXn2
A11 SSTXn2 B2 SSTXn2
A12 GND B1 GND