Acer DM431Kbmiiipx User Manual
Displayed below is the user manual for DM431Kbmiiipx by Acer which is a product in the Computer Monitors category. This manual has pages.
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Acer LCD Monitor
User's Guide
Copyright © 2018 . Acer Incorporated.
All Rights Reserved.
Acer LCD Monitor User's Guide
Original Issue: 07/2018
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 specically disclaims the implied warranties of merchantability or tness 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
axed 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 identication purposes only and belong to
their respective companies.
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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 uorescent light, the screen may icker during initial use. Turn o the
power switch and then turn it on again to make sure the icker disappears.
• You may nd slightly uneven brightness on the screen depending on the desktop pattern you use.
• The LCD screen has 99.99% or more eective 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 o 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 o 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.
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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 re 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 ts 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.
v
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 certied, type SPT-2, rated 7 A 125 V minimum, VDE approved or its equivalent,
4.5meters (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 qualied service personnel.
Unplug this product from the wall outlet and refer servicing to qualied 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 qualied technician to restore the product to normal condition.
Potentially explosive environments
Switch o 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 o your vehicle engine. Sparks in such areas could cause an explosion or re resulting in
bodily injury or even death. Switch o 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 liqueed 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.
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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 eects 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.acergroup.com/public/Sustainability/
Visit www.acer-group.com for further information on the features and benets 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://www.acergroup.com/public/Sustainability/
LCD pixel statement
The LCD unit is produced with high-precision manufacturing techniques. Nevertheless, some pixels
may occasionally misre or appear as black or red dots. This has no eect 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.
vii
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
• stiness 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 xed 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 reections 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
viii
• using a task light
• changing the display's viewing angle
• using a glare-reduction lter
• 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.
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Declaration of Conformity
We,
Acer Incorporated
8F, 88, Sec. 1, Xintai 5th Rd., Xizhi, New Taipei City 221, Taiwan
And,
Acer Italy s.r.l
Via Lepetit, 40, 20020 Lainate (MI) Italy
Tel: +39-02-939-921 ,Fax: +39-02 9399-2913
www.acer.it
Product: LCD Monitor
Trade Name: Acer
Model Number: DM431K
SKU Number: DM431K xxxxxx;
(“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
EN 55032:2012/AC:2013 Class B
EN 61000-3-2:2014 Class D
EN 55024:2010
EN 61000-3-3:2013
LVD Directive: 2014/35/EU
EN 60950-1:2006/A11:2009/A1:2010/A12:2011/A2:2013
RoHS Directive: 2011/65/EU
EN 50581:2012
ErP Directive: 2009/125/EC
Regulation (EC) No. 1275/ 2008; EN 50564:2011
Mar.9, 2018
RU Jan / Sr. Manager Date
Regulation, Acer Inc.
(Taipei, Taiwan)
Acer Incorporated
8F, 88, Sec. 1, Xintai 5th Rd., Xizhi
New Taipei City 221, Taiwan
2018
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: LCD Monitor
Model Number: DM431K
SKU Number:
DM431K 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 : 254-298-4000
Fax : 254-298-4147
www.acer.com
Special notes on LCD monitors
Information for your safety and comfort
Safety instructions
Cleaning your monitor
Connecting/disconnecting the device
Accessibility
Safe listening
Warnings
Using electrical power
Product servicing
Additional safety information
IT equipment recycling information
Disposal instructions
LCD pixel statement
Tips and information for comfortable use
CE Declaration of Conformity
Federal Communications Commission Declaration of
Conformity
Unpacking
Attaching/removing the base
Connecting the power cord
Power saving
Display Data Channel (DDC)
Connector pin assignment
Standard timing table
Installation
User controls
How to adjust a setting
Mode Management Menu
Adjusting the OSD settings
Adjusting the picture quality
Adjusting the Color setting
Adjusting the Audio setting
Adjusting the Performance setting
Adjusting the OSD setting
System setting
Information setting
Troubleshooting
VGA mode
HDMI /DP model
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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
LCD monitor DM1 series-DM431K
USER GUIDE
AC power cord DP cable (Option)
HDMI cable (Option) VGA cable (Option)
Audio cable (Option) Remot control
2
Attaching/removing the base
Installation: By aligning the front-end of the bracket with the corresponding slot on the back of the
display, and x the stand onto the display by screwing the four screws clockwise.
Remove: Reverse the steps to remove the base.
3
Connecting the power cord
• Check rst 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 Orange
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.
4
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+
5
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 Cong1
4 Lane1(p) 14 Cong2
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
6
15-pin color display signal cable
PIN No. Description PIN No. Description
1 Red 9 +5V
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
7
Standard timing table
Mode Resolution
1 VGA 640×480 60 Hz
2 VGA 640×480 72 Hz
3 VGA 640×480 75 Hz
4MAC 640×480 66.66 Hz
5 VESA 720×400 70 Hz
6 SVGA 800×600 56 Hz
7 SVGA 800×600 60 Hz
8 SVGA 800×600 72 Hz
9 SVGA 800×600 75 Hz
10 MAC 832×624 74.55 Hz
11 XGA 1024×768 60 Hz
12 XGA 1024×768 70 Hz
13 XGA 1024×768 75 Hz
14 MAC 1152×870 75 Hz
15 VESA 1152×864 75 Hz
16 VESA 1280×960 60 Hz
17 SXGA 1280×1024 60 Hz
18 SXGA 1280×1024 75 Hz
19 VESA 1280×720 60 Hz
20 WXGA+ 1440×900 60 Hz
21 WSXGA+ 1680×1050 60 Hz
22 FHD 1920×1080 60 Hz
23 QHD 2560×1440 60 Hz
24 UHD 3840×2160 30 Hz
25 UHD 2160p 25 Hz
26 UHD 2160p 24 Hz
27 UHD 3840×2160 60 Hz
8
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 o.
b. Connect the VGA video cable to the computer.
c. Connect the HDMI Cable (Only HDMI-Input Model)
(1) Make sure both the monitor and computer are switched o.
(2) Connect one end of the 19-pin HDMI cable to the back of the monitor and the other end to
the computer's port.
d. Connect the digital cable (only for DP models).
(1) Make sure both the monitor and computer are switched o.
(2) Connect one end of the 20-pin DP 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. Optional: Connect the audio input socket(AUDIO IN) of the LCD monitor and the line-out port on
the computer with the audio cable.
4. Turn on the monitor and computer
Turn on the monitor rst, then the computer. This sequence is very important.
5. If the monitor does not function properly, please refer to the troubleshooting section to diagnose
the problem.
9
Power Switch / Power LED:
1.Press/Hold 3 seconds to Power Off.
Lights up to indicate the power is turned ON.
2.Blue indicates power on.
Amber indicates standby/ power saving mode.
Using the Shortcut Menu
USER CONTROLS
1
2
4
5
6
3
3 /
OSD functions/
Up
a. Press to view the OSD.
b. Press this button to select the
desired item when in OSD menu.
4 /
Input source
switching /
Right
a. Use the INPUT hotkey to enter Input
select function.
b. Press this button to select the
desired item when in OSD menu.
5 / Empowering
Key /
Down
a. Press this button to select scenario
mode.
b. Press this button to select the
desired item when in OSD menu.
6
/ Volume Key /
Left
a. Press this button to adjust volume.
b. Press this button to select the desired
item when in OSD menu.
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How to adjust a setting
Mode Management Menu
Operation instructions
Acer Mode Management Menu
Step 1: Press “ “ Key to open the Mode Management Menu and access the scenario
modes
Step 2: Press ““ or “” to select the mode
Step 3: Press “OK “ Key to conrm the mode and exit the Mode Management menu.
Features and Benets
Main
Menu icon
Sub
Menu icon
Sub
Menu item Description
N/A sRGB Mode
sRGB mode provides better color matching with
peripheral devices such as printers and digital
cameras.
N/A Rec709 Rec709 mode is the same with sRGB mode but
for the Rec.709 color space.
N/A HDR
HDR mode provide a“High Dynamic Range”to
helps create lifelike images while replicating
accurate details in lighting and shades to create a
picture which is truthfully bright or dark, without
sacricing detail.
N/A User Mode In User mode the settings can be ne-tuned to
suit any situation.
N/A Standard Mode The default setting demonstrates the native
display settings.
N/A ECO Mode ECO mode adjusts the settings to reduce power
consumption.
N/A Graphics Mode Graphics mode enhances colors and emphasizes
ne details.
N/A Movie Mode Movie mode presents great visuals, even in
unsuitably-lit environments.
Modes
sRGB Rec 709 HDR User
Standard EC
OM
ovieGraphic
Move OK
11
Adjusting the OSD settings
Note: The following content is for general reference only. Actual product specications may
vary.
The OSD can be used for adjusting the settings of your LCD Monitor. Press the key to
open the OSD. You can use the OSD to adjust the picture quality, OSD setting and general
settings. For advanced settings, please refer to following page:
Adjusting the picture quality
1. Press the key to bring up the OSD.
2. Using the / keys, select Picture from the OSD menu. Then navigate to the
picture element you wish to adjust.
3. Use the / keys to adjust the sliding scales.
4. The Picture menu can be used to adjust the current Brightness, Contrast, Black
Boost,BlueLight, ACM,HDR,Super Sharpness,Auto Cong,H. Position,V. Position,
Focus,Clock qualities.
5. Brightness: Adjust the brightness from 0 to 100.
-----------------------------------------------------------------------------------------------------------
Note: Adjusts the balance between light and dark shades.
6. Contrast: Adjust the contrast from 0 to 100.
-----------------------------------------------------------------------------------------------------------
Note: Sets the degree of dierence between light and dark areas.
7. Black Boost: Adjust the black level from 0 to 10. Enhances shadows by increasing the
brightness without changing lighter shades.
8. Blue Light: Filters out blue light to protect your eyes by adjusting how much blue light
is shown -- 80%, 70%, 60%, or 50%.
-----------------------------------------------------------------------------------------------------------
Note: A higher value allows more blue light to pass through, so in order to
achieve the best protection, please select a lower value, of which 50% is in the
best state and has been tested by TÜV Rheinland and meet the requirements of
Picture
Color
Audio
Performance
OSD
System
Mode - Standard
Move Enter Exit
Information
Brightness
off
Blue Light
off
ACM
off
HDR
off
Super Sharpness
Auto Config
80
Contrast 50
H. Position 50
V. Position 50
Focus 50
Clock 50
Black Boost 5
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Adjusting the Color setting
1. Press the key to bring up the OSD.
2. Using the / keys, select Color from the OSD menu. Then navigate to the
feature you wish to adjust.
3. Use the / keys to adjust the sliding scales.
4. The Color menu can be used to adjust the current Gamma, Color Temp. Mode, sRGB
Mode, Grayscale Mode and other color related qualities.
5. Color temp.: Default is warm. You can choose Cool, Normal, Warm, Bluelight or
User.
6. Modes: To choose scenario mode.
7. sRGB: Default is o. You can turn sRGB on or o to better color match with peripheral
devices, such as printers and digital cameras.
8. Grayscale Mode: To choose Grayscale mode.
9. 6-axis Hue: Adjust the red, green, blue, yellow, magenta and cyan hue.
10. 6-axis Saturate: Adjust the red, green, blue, yellow, magenta and cyan saturation.
11. HDR : Turn HDR Auto or o.
Note: Set to "Auto", Auto checked input source ability to provide HDR . Set to "O" No
support HDR eect
12. Auto Cong: To automatically adjust H./V. Position, Phase adjust and Clock adjust (VGA
only).
13. H. Position: To adjust the horizontal position of the video. (VGA only).
14. V. Position: To adjust the vertical position of the video. (VGA only).
15. Focus: To adjust the delay time of data and clock. (VGA only).
16. Clock: To adjust the horizontal pixel clock of the video. (VGA only)
Mode - Standard
Move Enter Exit
Warm
Picture
Color
Audio
Performance
OSD
System
Information
Gamma
Modes
Color Temp.
R Gain 50
G Gain 50
B Gain 50
R Bias 50
G Bias 50
B Bias 50
2.2
TÜV Rheinland's “Low Blue Light Content” standard.
9. ACM: Turn ACM on or o.
Note: Set to "On", will be based on the current screen to dynamic contrast adjustment.
10. Super Sharpness: Turn the Super Sharpness On or O. Super Sharpness technology
can simulate high-resolution images by boosting the pixel density of the original
source to make images sharper and clearer.
13
Adjusting the Performance setting
Mode - Standard
Move Enter Exit
off
Normal
Picture
Color
Audio
OSD
System
Information
Over Drive
Refresh Rate Num
Performance
1. Press the key to bring up the OSD.
2. Using the / keys, select Performance from the OSD menu. Then navigate to
the feature you wish to adjust.
3. Use the / keys to adjust the sliding scales.
4. The Performance menu can be used to adjust the screen Over Drive and Refresh Rate
Num settings.
Adjusting the Audio setting
1. Press the key to bring up the OSD.
2. Using the / keys, select Audio from the OSD. Then navigate to the feature you
wish to adjust.
3. Use the / keys to adjust the sliding scales.
Mode - Standard
Move Enter Exit
off
Picture
Color
Audio
Performance
OSD
System
Information
Volume
Mute
70
14
Adjusting the OSD setting
1. Press the key to bring up the OSD.
2. Using the / keys, select OSD from the OSD menu. Then navigate to the feature
you wish to adjust.
3. Use the / keys to adjust the sliding scales.
4. The Setting menu can be used to adjust the screen Menu Language,OSD Timeout and
other important settings.
5. OSD timeout: Adjust the delay before turning o the OSD menu.
6. Transparency: Select the transparency when using gaming mode. The transparency
can be 0% (OFF), 20%, 40%, 60%, or 80%.
7. OSD Lock: To control OSD Key lock On/O.
Note:
OSD Locked:
• Set the OSD Lock to "On" by the OSD option and press "Enter" to execute the
All Key lock function.
• The "OSD Locked" message will be displayed in the middle of the screen.
• LED lights will be changed from blue light to orange light.
• Press any Key screen to prompt "OSD Locked" message.
OSD Unlocked:
• In normal display condition to press the "OSD Key 3" in the middle of more
than 3 seconds to trigger "OSD Unlock".
• The "OSD Unlock" message will be displayed in the middle of the screen.
• LED lights will be restored to blue light.
Mode - Standard
Move Enter Exit
off
English
off
10
Picture
Color
Audio
Performance
OSD
System
Information
Language
OSD Timeout
Transparency
OSD Lock
1
2
4
5
6
3
15
System setting
Product the Information setting
Mode - Standard
Move Enter Exit
on
HDMI 1
DP12
Full
On
Normal
off
Picture
Color
Audio
Performance
OSD
System
Information
Input
DP Format
Auto Source
Wide Mode
Hot Key Assignment
DDC/CI
HDMI Black Level
Quick Start Mode
Enter
USB upgrade
PIP/PBP
Mode - Standard
Move Enter
Picture
Color
Audio
Performance
OSD
System
Information
Main Source
HDMI 1
Resolution
3840x2160.
H/V Frequency
H: 89 KHz, V: 60 Hz
Mode
Normal
Series Number
MMTA700001701000013E00
Reset All Settings
Exit
1. Press the key to bring up the OSD.
2. Using the / keys, select System from the OSD . Then navigate to the feature
you wish to adjust.
3. Use the / keys to adjust the sliding scales.
4. The Performance menu can be used to adjust the Input ,Auto Source,DP Format,Wide
Mode,PIP/PBP,Hot Key Assignment and other important settings.
5. DDC/CI: Allows the monitor settings to be set through the software on the PC.
-----------------------------------------------------------------------------------------------------------
Note: DDC/CI, short for Display Data Channel/Command Interface, which allows
monitor controls to be sent via software.
6.USB upgrade menu allows user to upgrade Firmware. The Firmware name must be ”
ACER_MST9U3_DM431K.bin” and put in USB root directory.
Note: Recommended engineering sta to assist.
1 Press the key to bring up the OSD.
2 Using the / keys, select Information from the OSD . The basic information of
LCD monitor will show up for current input.
3 The Information menu can be used to adjust the IReset All Settings and Exit settings.
16
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.
O Check the power switch.
Check if the power cord is properly connected to
the monitor.
Orange 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 specication of graphics adapter and
monitor is in compliance which may be causing
the input signal frequency mismatch.
Abnormal picture Image is missing,
o-center, too
large or too small
on the screen.
Using the OSD, adjust focus, clock, H-position and
V-position with non-standard signals.
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 o the monitor.
17
HDMI /DP model
Problem LED status Remedy
No picture visible Blue Using the OSD, adjust brightness and contrast to
maximum or reset to their default settings.
O Check the power switch.
Check if the power cord is properly connected to
the monitor.
Orange 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 specication of graphics adapter and
monitor is in compliance which may be causing
the input signal frequency mismatch.
Abnormal picture Image is missing,
o-center, too
large or too 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 o the monitor.
Note: Acer monitor is purposed for video and visual display of information obtained from
electronic devices.