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Dell Monitor
D2720DS
User’s Guide
Model: D2720DS
Regulatory model: D2720DSt
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Copyright © 2019 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.
2019 – 06
Rev. A00
Contents
About Your Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Identifying Parts and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Monitor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Plug-and-Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
LCD Monitor Quality and Pixel Policy . . . . . . . . . . . . . . . . . . . . . . .15
Setting Up the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Attaching the stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Using the Tilt and Vertical Extension . . . . . . . . . . . . . . . . . . . . . . .17
Connecting Your Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Organizing Your Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Removing the Monitor Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Wall Mounting (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Operating the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Turning on the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Using the Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . 22
Using the On-Screen Display (OSD) Menu . . . . . . . . . . . . . . . . . . . 24
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Contents | 3
Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Product Specific Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Contacting Dell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Setting Up Your Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Maintenance Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4 | Contents
About Your Monitor
Package Contents
Your monitor ships with the components shown below. Make sure that you have received all the components and
if something is missing.
NOTE: Some items may be optional and may not ship with your monitor.
Some features may not be available in certain countries.
Monitor
Stand riser
Stand base
Screw x 4
About Your Monitor | 5
Power cable (varies by country)
HDMI cable
• Quick Setup Guide
• Safety,Environmental,and
Regulatory Information
Product Features
The Dell D2720DS monitor has an active matrix, thinfilm transistor (TFT), liquid crystal display (LCD), and LED backlight. The monitor features include:
• 68.467
cm (27.0-inch) viewable area display (measured diagonally). 2560 x 1440 resolution with full-screen support for lower resolutions.
• Tilt, pivot and height adjustment capabilities.
• Removable stand and Video Electronics Standards Association (VESA™) 100 mm mounting holes for flexible mounting solutions.
• Digital connectivity with DisplayPort and HDMI.
• Plug and play capable if supported by your system.
• Minimize eye discomfort with a screen.
• On-screen display (OSD) adjustments for easy setup and screen optimization.
• Security lock slot.
• Stand lock.
• Arsenic-free glass and Mercury-free for the panel only.
• 0.3
W standby power when in the sleep mode.
6 | About Your Monitor
Identifying Parts and Controls
Front view
1
Label Description
1
Function buttons (For more information, see Operating the Monitor )
2 Power on/off button (with LED indicator)
2
About Your Monitor | 7
Back View
1
2
3
4
2
3
Label Description
1 VESA mounting holes (100 mm x 100 mm - behind attached VESA Cover)
4
Security lock slot
Barcode, serial number, and Service Tag label
Cable-management slot
Use
Wall mount monitor using VESA-compatible wall mount kit (100 mm x 100 mm).
Secures monitor with security lock (sold separately).
Refer to this label if you need to contact Dell for technical support.
Use to organize cables by inserting them through the slot.
Bottom View
2
3
Label Description
1 Power connector
HDMI connector
DP connector
1 2 3
Use
Connect the power cable.
Connect your computer with HDMI cable.
Connect your computer with DisplayPort cable (sold separately).
8 | About Your Monitor
Monitor Specifications
Screen type
Panel Type
Aspect ratio
Viewable image dimensions
Diagonal
Active Area
Horizontal
Vertical
Area
Pixel pitch
Pixel per inch (PPI)
Viewing angle
Horizontal
Vertical
Brightness
Contrast ratio
Faceplate coating
Backlight
Response Time (Gray to Gray)
Color depth
Color gamut
Connectivity
Border width (edge of monitor to active area)
Adjustability
Height adjustment
Tilt
Pivot
Security
Resolution Specifications
Horizontal scan range
Vertical scan range
Maximum preset resolution
Active matrix - TFT LCD
In-Plane Switching Technology
16:9
684.67 mm (27 inches)
596.74 mm (23.5 inches)
335.66 mm (13.2 inches)
200301.7 mm² (310.20 inches²)
0.233 mm x 0.233 mm
108.79
178° (typical)
178° (typical)
350 cd/m² (typical)
1000 to 1 (typical)
Anti-Glare with 3H hardness
LED Edgelight system
6 ms with OD
16.7 million colors
CIE 1976 (79%), CIE 1931 (72%)
• 1 HDMI port
• 1 DP port
7.9 mm (Top/Left/Right)
18.5 mm (Bottom)
Up to 100 mm
-7° to 23°
0° to 90°
Security lock slot (cable lock sold separately)
30 kHz to 88 kHz
46 Hz to 65 Hz
2560 x 1440 at 60 Hz
About Your Monitor | 9
Video input capabilities
(HDMI playback)
Preset Display Modes
480i, 480p, 576i, 576p, 720p, 1080i, 1080p,2160p
Display Mode
720 x 400
Horizontal
Frequency
(kHz)
31.5
VESA, 640 x 480 31.5
VESA, 640 x 480 37.5
VESA, 800 x 600 37.9
VESA, 800 x 600 46.9
VESA, 1024 x 768 48.4
VESA, 1024 x 768 60.0
VESA, 1152 x 864 67.5
VESA, 1280 x 1024 64.0
VESA, 1280 x 1024 80.0
VESA, 1600 x 1200 75.0
VESA, 1920 x 1080 67.5
VESA, 1600 x 900 60.0
CVR, 2560 x 1440 88.8
Electrical Specifications
Video input signals
AC Input voltage/ frequency/ current
Inrush current
60.0
75.0
75.0
60.0
75.0
Vertical
Frequency
(Hz)
70.0
60.0
75.0
60.3
75.0
60.0
60.0
60.0
60.0
Pixel Clock
(MHz)
65.0
78.8
108.0
108.0
135.0
28.3
25.2
31.5
40.0
49.5
162.0
148.5
108
241.5
• HDMI 1.4, 150mV=<Vp-p=<1560mV for each differential line, 100 ohm input impedance per differential pair
• DisplayPort 1.2, 120mv min.(For HBR) 50mv min.
(For HBR2) for each differential line, 100 ohm input impedance per differential pair
100-240 VAC / 50 or 60 Hz ± 3 Hz / 1.5A (typical)
• 120 V: 30 A (Max.) at 0 °C (cold start)
• 220 V: 60 A (Max.) at 0 °C (cold start)
+/+
+/+
+/-
+/-
-/-
+/+
+/+
+/+
+/+
Sync Polarity
(Horizontal/
Vertical)
-/+
-/-
-/-
+/+
+/+
10 | About Your Monitor
Physical Characteristics
Signal cable type
• Digital: DisplayPort, 20 pins
• Digital: HDMI, 19 pins
Dimensions (with stand)
Height (extended)
Height (compressed)
Width
Depth
Dimensions (without stand)
Height
Width
Depth
Stand dimensions
Height (extended)
Height (compressed)
Width
Depth
Base
Weight
Weight with packaging
Weight with stand assembly and cables
Weight without stand assembly
(For wall mount or VESA mount considerations - no cables)
Weight of stand assembly
523.5 mm (20.61 inches)
423.5 mm (16.67 inches)
612.6 mm (24.12 inches)
218.0mm (8.58 inches)
362.1 mm (14.26 inches)
612.6 mm (24.11 inches)
48.5 mm (1.91 inches)
395.3 mm (15.56 inches)
295.3 mm (11.62 inches)
230.0 mm (9.05 inches)
218.0 mm (8.58 inches)
230.0 mm x218.0 mm (9.06 inches x 8.58 inches)
7.1 kg (15.65 lb)
5.9 kg (13.0 lb)
3.52 kg (7.76 lb)
2.1 kg (4.63 lb)
Environmental Characteristics
Temperature
Operating
Non-operating
0 °C to 40 °C (32 °F to 104 °F)
• Storage: -20 °C to 60 °C (-4 °F to 140 °F)
• Shipping: -20 °C to 60 °C (-4 °F to 140 °F)
Humidity
Operating
Non-operating
10% to 80% (non-condensing)
• Storage: 5% to 90% (non-condensing)
• Shipping: 5% to 90% (non-condensing)
About Your Monitor | 11
Altitude
Operating
Non-operating
Thermal dissipation
5,000 m (16,404 ft) (maximum)
12,192 m (40,000 ft) (maximum)
• 148.5 BTU/hour (maximum)
• 114.0 BTU/hour (typical)
Compliant standards
RoHS Compliant
BFR/PVC free Monitor
(excluding external cables) yes yes
Power Management Modes
If you have VESA’s DPM-compliant video card or software installed in your PC, the monitor can automatically reduce its power consumption when not in use. This is referred to as power save mode*. If the computer detects input from the keyboard, mouse, or other input devices, the monitor automatically resumes functioning. The following table shows the power consumption and signaling of this automatic power saving feature.
VESA
Modes
Normal operation
Horizontal
Sync
Active
Active-off mode
Inactive
Switch off -
Vertical
Sync
Video Power Indicator
Active Active White
Power Consumption
43.5 W (maximum)**
33.4 W (typical)
Inactive Off Amber Less than 0.3 W
Off Less than 0.3 W
The OSD operates only in the normal operation mode. If you press any button in the activeoff mode, the following message is displayed:
No Signal
*Zero power consumption in OFF mode can only be achieved by disconnecting
the AC mains cable from the monitor.
**Maximum power consumption with maximum luminance.
This document is informational only and reflects laboratory performance. Your product may perform differently, depending on the software, components and peripherals you ordered and shall have no obligation to update such information. Accordingly, the customer should not rely upon this information in making decisions about electrical tolerances or otherwise.
No warranty as to accuracy or completeness is expressed or implied.
Activate the computer and the monitor to gain access to the OSD.
12 | About Your Monitor
Pin Assignments
HDMI connector
12
13
14
15
16
17
18
19
8
9
6
7
10
11
4
5
2
3
Pin number 19-pin side of the connected signal cable
1 TMDS DATA 2+
TMDS DATA 2 SHIELD
TMDS DATA 2-
TMDS DATA 1+
TMDS DATA 1 SHIELD
TMDS DATA 1-
TMDS DATA 0+
TMDS DATA 0 SHIELD
TMDS DATA 0-
TMDS CLOCK+
TMDS CLOCK SHIELD
TMDS CLOCK-
CEC
Utility
DDC CLOCK (SCL)
DDC DATA (SDA)
DDC/CEC Ground
+5 V POWER
HOT PLUG DETECT
About Your Monitor | 13
DP connector
10
11
12
13
14
15
16
17
18
19
20
6
7
4
5
8
9
2
3
Pin number 20-pin side of the connected signal cable
1 ML3 (n)
GND
ML3 (p)
ML2 (n)
GND
ML2 (p)
ML1 (n)
GND
ML1 (p)
ML0 (n)
GND
ML0 (p)
CONFIG1
CONFIG2
AUX (p)
GND
AUX (n)
Hot Plug Detect
Return
DP_PWR
14 | About Your Monitor
Plug-and-Play
You can install the monitor in any Plug-and-Play-compatible system. The monitor automatically provides the computer system with its extended display identification data
(EDID) using display data channel (DDC) protocols so the computer can configure itself and optimize the monitor settings. Most monitor installations are automatic; you can select different settings if desired. For more information about changing the monitor settings, see
.
LCD Monitor Quality and Pixel Policy
During the LCD monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state which are hard to see and do not affect the display quality or usability. For more information on LCD Monitor Pixel Policy, see Dell support site at: http://www.dell.com/support/monitors .
About Your Monitor | 15
Setting Up the Monitor
Attaching the stand
NOTE: The stand is not installed at the factory when shipped.
NOTE: The following instructions are applicable only for attaching the stand that was
shipped with your monitor. If you are attaching a stand that you purchased from any
other source, follow the set up instructions that were included with the stand.
To attach the monitor stand:
1 Remove the monitor’s protective cover and place the monitor with its front facing downward on it.
2 Use a screwdriver to fully tighten the four screws to the back of the monitor.
3 Insert the stand base blocks fully into the stand slot.
16 | Setting Up the Monitor
4 Lift the screw handle and turn the screw clockwise.
5 After fully tightening the screw, fold the screw handle flat within the recess.
NOTE: Lift the monitor carefully to prevent it from slipping or falling.
Using the Tilt and Vertical Extension
NOTE: This is applicable for a monitor with a stand. If you purchased any other
stand, refer to the respective stand setup guide for set up instructions.
Tilt
With the built-in pedestal, you can tilt the monitor for the most comfortable viewing angle.
7° 23°
NOTE: The stand is detached when the monitor is shipped from the factory.
Setting Up the Monitor | 17
Vertical Extension
NOTE: The stand extends vertically up to 100 mm. The figure below
illustrates how to extend the stand vertically.
100 mm
Rotating the Monitor
Before you rotate the monitor, your monitor should be fully vertically extended and fully tilted up to avoid hitting the bottom edge of the monitor.
90° 0°
Connecting Your Monitor
WARNING: Before you begin any of the procedures in this section, follow the
.
To connect your monitor to the computer:
1 Turn off your computer.
2 Connect either the HDMI or the DP cable from your monitor to the computer.
3 Switch on your monitor.
4 Select the correct input source at Monitor OSD Menu and turn on your
computer.
18 | Setting Up the Monitor
Connecting the HDMI cable
HDMI
Connecting the DP cable (optional)
DP
Organizing Your Cables
After attaching all necessary cables to your monitor and computer, (see Connecting Your
for cable attachment) organize all cables as shown above.
Setting Up the Monitor | 19
Removing the Monitor Stand
CAUTION: To prevent scratches on the LCD screen while removing the
stand, make sure that the monitor is placed on a soft, clean surface.
NOTE: The procedure below is applicable for the default stand. If you purchased any
other stand, see the documentation shipped with the stand to set it up.
To remove the stand:
1 Place the monitor on a soft cloth or cushion.
2 Loosen the screw from the base.
3 Use a screwdriver to loosen the four screws at the back of the monitor.
4 Lift the stand up and away from the monitor.
3
2
20 | Setting Up the Monitor
Wall Mounting (Optional)
NOTE: Use M4 x 10 mm screws to connect the monitor to the wall-mounting kit.
Refer to the instructions that come with the VESA-compatible wall mounting kit.
1 Place the monitor on a soft cloth or cushion on a stable, flat table.
2 Remove the stand.
3 Use a Phillips crosshead screwdriver to remove the four screws securing the
plastic cover.
4 Attach the mounting bracket from the wall mounting kit to the monitor.
5 Mount the monitor on the wall by following the instructions that comes with the
wall mounting kit.
NOTE: For use only with UL or CSA or GS-listed wall mount bracket with minimum
weight/load bearing capacity of 7.1 kg (15.65 lbs).
Setting Up the Monitor | 21
Operating the Monitor
Turning on the Monitor
Press the button to turn on the monitor.
Using the Front Panel Controls
Use the control buttons on the front of the monitor to adjust the characteristics of the image being displayed. As you use these buttons to adjust the controls, an OSD shows the numeric values of the characteristics as they change.
INPUT
-
+ MENU EXIT
1 2 3 4 5 6 7
22 | Operating the Monitor
The following table describes the front panel buttons:
Front-Panel Button
1
2
3
4
5
6
INPUT
Shortcut key:
Input
+
+
-
-
MENU
Menu
EXIT
Exit
Description
Use this button to choose Input Source from a list of
Auto, DisplayPort, HDMI.
Use this button to select the next item down the list or decrease the setting value.
Use this button to select the next item up the list or increase the setting value.
Use this menu button to launch the on-screen display
(OSD) and select the OSD menu.
See
.
Use this button to go back to the main menu or exit the
OSD main menu.
Use the Power button to turn the monitor On and Off.
7
Power
Power light indicator
The white LED indicates the monitor is On and fully functional.
Operating the Monitor | 23
Using the On-Screen Display (OSD) Menu
Accessing the Menu System
NOTE: Any changes you make using the OSD menu are automatically saved if
you move to another OSD menu, exit the OSD menu, or wait for the OSD menu
to disappear.
Press the
MENU
button to launch the OSD menu and display the main menu.
Icon Menu and
Submenus
Picture
Description
Use this menu to activate adjustment.
Brightness/Contrast/Color Temp.
Brightness
Contrast
Brightness adjusts the luminance of the backlight
(minimum 0; maximum 100).
Press the button to decrease brightness.
Press the + button to increase brightness.
Adjust the Brightness first, and then adjust Contrast only if further adjustment is necessary.
Press the
+
button to increase contrast and press the
button to decrease contrast (between 0 and 100).
Contrast adjusts the difference between darkness and lightness on the monitor.
24 | Operating the Monitor
Icon Menu and
Submenus
Description
Color Temp.
Allows users to select the Color Temp: 6500K , User, 9300K ,
7500K .
OSD
H. Position Use
-
or
+
to adjust the H. Position from 0 to 100.
V. Position
Use or + to adjust the V. Position from 0 to 100.
OSD Timeout
Use the and + buttons to adjust the slider in 5-second increments, from 5 to 30 seconds.
Operating the Monitor | 25
Icon Menu and
Submenus
Display
Description
Use the Display menu to adjust image.
Display Mode Adjust the image ratio to Full or Aspect .
Opticolor When you select Opticolor , you can choose
Game, Cinema or Text from the list.
• Standard: Default color settings. This is the default preset mode.
• Scenery: Option to allow matching of the white backgrounds on multiple monitors.
• Game: Ideal for most gaming applications.
• Cinema: Ideal for cinema.
• Text: Ideal for text.
Standard, Scenery,
ECO
Sharpness
OD
Select On to turn on this feature.
Makes the image look sharper or softer.
Use or + to adjust the sharpness from ‘0’ to ‘8’.
Select On to turn on this feature.
26 | Operating the Monitor
Icon Menu and
Submenus
Description
Miscellaneous Select this option to adjust the settings of the OSD.
Language Set the OSD display to languages of English, Simplified Chinese.
Input Select Use the Input Select menu to select between different video inputs that are be connected to your monitor.
DDC/CI DDC/CI (Display Data Channel/Command Interface) allows you to adjust the monitor settings using software on your computer.
Select Off to turn off this feature.
Enable this feature for best user experience and optimum performance of your monitor.
Reset Restore the menu settings to factory defaults.
Operating the Monitor | 27
Icon Menu and
Submenus
Information
Description
Displays the monitor’s current settings.
NOTE: This monitor has a built-in feature to automatically calibrate the brightness
to compensate for LED aging.
28 | Operating the Monitor
OSD Warning Messages
Activate the computer and wake up the monitor to gain access to the OSD
.
If you press any button other than the power button, the following messages will appear depending on the selected input:
No Signal
If either HDMI or DP is selected and the corresponding cable is not connected, a floating dialog box as shown below appears.
Cable Not
Connected
See Troubleshooting for more information.
Operating the Monitor | 29
Troubleshooting
WARNING: Before you begin any of the procedures in this section, follow the
Self-Test
Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:
1 Turn off both your computer and the monitor.
2 Unplug the video cable from the back of the computer. To ensure proper Self-Test
operation, remove all digital and the analog cables from the back of computer.
3 Turn on the monitor.
The floating dialog box should appear on-screen (against a black background), if the monitor cannot sense a video signal and is working correctly. While in self-test mode, the power LED remains white. Also, depending upon the selected input, one of the dialogs shown below will continuously scroll through the screen.
Cable Not
Connected
4 This box also appears during normal system operation if the video cable becomes
disconnected or damaged.
5 Turn off your monitor and reconnect the video cable; then turn on both your
computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check your video controller and computer, because your monitor is functioning properly.
30 | Troubleshooting
Common Problems
The following table contains general information about common monitor problems you might encounter and the possible solutions:
Possible Solutions Common
Symptoms
No Video/Power
LED off
What You
Experience
No picture
No Video/Power
LED on
No picture or no brightness
• Ensure that the video cable connecting the monitor and the computer is properly connected and secure.
• Verify that the power outlet is functioning properly using any other electrical equipment.
• Ensure that the power button is depressed fully.
• Ensure that the correct input source is selected in
• Increase brightness and contrast controls via OSD.
• Perform monitor self-test feature check.
• Check for bent or broken pins in the video cable connector.
• Ensure that the correct input source is selected in
Missing Pixels
Stuck-on Pixels
Brightness
Problems
Safety Related
Issues
Intermittent
Problems
LCD screen has spots
LCD screen has bright spots
Picture too dim or too bright
Visible signs of smoke or sparks
Monitor malfunctions on
& off
• Cycle power on-off.
• Pixel that is permanently off is a natural defect
that can occur in LCD technology.
• For more information on Dell Monitor Quality
and Pixel Policy, see Dell Support site at: http://www.dell.com/support/monitors .
• Cycle power On-Off.
• Pixel that is permanently off is a natural defect
that can occur in LCD technology.
• For more information on Dell Monitor Quality
and PixelPolicy, see Dell Support site at: http://www.dell.com/support/monitors .
• Reset the monitor to factory settings.
• Adjust brightness and contrast controls via OSD.
• Do not perform any troubleshooting steps.
• Contact Dell immediately.
• Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.
• Reset the monitor to factory settings.
• Perform monitor self-test feature check to determine if the intermittent problem occurs in selftest mode.
Troubleshooting | 31
Common
Symptoms
Missing Color
Wrong Color
Image retention from a static image left on the monitor for a long period of time
What You
Experience
Picture missing color
Picture color not good
Faint shadow from the static image displayed appears on the screen
Possible Solutions
• Perform monitor self-test.
• Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.
• Check for bent or broken pins in the video cable connector.
• Change the settings of the Color Temp.
in the
Picture menu OSD depending on the application.
• Use the Power Management feature to turn off the monitor at all times when not in use (for more information, see
).
• Alternatively, use a dynamically changing screensaver.
32 | Troubleshooting
Product Specific Problems
Specific
Symptoms
Screen image is too small
Cannot adjust the monitor with the buttons on the front panel
What You
Experience
Image is centered on screen, but does not fill entire viewing area
OSD does not appear on the screen
Possible Solutions
• Check the Aspect setting in the Display menu
OSD.
• Reset the monitor to factory settings.
• Turn off the monitor, unplug the monitor power cable, plug it back, and then turn on the monitor.
No Input Signal when user controls are pressed
The picture does not fill the entire screen
No picture, the
LED light is white
The picture cannot fill the height or width of the screen
• Check the signal source. Ensure the computer is not in the power saving mode by moving the mouse or pressing any key on the keyboard.
• Check whether the signal cable is plugged in properly. Re-plug the signal cable if necessary.
• Reset the computer or video player.
• Due to different video formats (aspect ratio) of
DVDs, the monitor may display in full screen.
Troubleshooting | 33
Appendix
Safety Instructions
For displays with glossy bezels the user should consider the placement of the display as the bezel may cause disturbing reflections from surrounding light and bright surfaces.
WARNING: Use of controls, adjustments, or procedures other than those
specified in this documentation may result in exposure to shock, electrical
hazards, and/or mechanical hazards.
For information on safety instructions, see the Safety, Environmental, and Regulatory
Information (SERI).
Contacting Dell
NOTE: If you do not have an active Internet connection, you can find contact
information on your purchase invoice, packing slip, bill, or Dell product catalog.
Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area.
To get online Monitor support content:
See www.dell.com/support/monitors .
To contact Dell for sales, technical support, or customer service issues:
1 Go to www.dell.com/support .
2 Verify your country or region in the Choose A Country/Region drop-down menu
at the top-left corner of the page.
3 Click Contact Us next to the country dropdown.
4 Select the appropriate service or support link based on your need.
5 Choose the method of contacting Dell that is convenient for you.
34 | Appendix
Setting Up Your Monitor
Setting Display Resolution to 2560 x 1440
For best performance, set the display resolution to 2560 x 1440 pixels by performing the following steps:
In Windows Vista, Windows 7, Windows 8 or Windows 8.1:
1 For Windows 8 or Windows 8.1 only, select the Desktop tile to switch to classic
desktop.
2 Right-click on the desktop and click Screen Resolution .
3 Click the Dropdown list of the Screen Resolution and select 2560 x 1440.
4 Click OK .
In Windows 10:
1 Right-click on the desktop and click Display Settings .
2 Click Advanced display settings .
3 Click the dropdown list of Resolution and select 2560 x 1440.
4 Click Apply .
If you do not see the recommended resolution as an option, you may need to update your graphics driver. Please choose the scenario below that best describes the computer system you are using, and follow the given steps.
Dell computer
1 Go to www.dell.com/support , enter your service tag, and download the latest
driver for your graphics card.
2 After installing the drivers for your graphics adapter, attempt to set the resolution to
2560 x 1440 again.
NOTE: If you are unable to set the resolution to 2560 x 1440, please contact Dell
to inquire about a graphics adapter that supports these resolutions.
Appendix | 35
Non-Dell computer
In Windows Vista, Windows 7, Windows 8 or Windows 8.1:
1 For Windows 8 or Windows 8.1 only, select the Desktop tile to switch
to classic desktop.
2 Right-click on the desktop and click Personalization.
3 Click Change Display Settings.
4 Click Advanced Settings.
5 Identify your graphics controller supplier from the description at the top of the
window (e.g. NVIDIA, AMD, Intel etc.).
6 Refer to the graphic card provider website for updated driver (for example, http://www.AMD.com
or http://www.NVIDIA.com
).
7 After installing the drivers for your graphics adapter, attempt to set the resolution
to 2560 x 1440 again.
In Windows 10:
1 Right-click on the desktop and click Display Settings.
2 Click Advanced display settings.
3 Click Display adapter properties.
4 Identify your graphics controller supplier from the description at the top of the
window (e.g. NVIDIA, AMD, Intel etc.).
5 Refer to the graphic card provider website for updated driver (for example, http://www.AMD.com
or http://www.NVIDIA.com
).
6 After installing the drivers for your graphics adapter, attempt to set the resolution
to 2560 x 1440 again.
NOTE: If you are unable to set the recommended resolution, please contact the
manufacturer of your computer or consider purchasing a graphics adapter that supports the video resolution.
36 | Appendix
Maintenance Guidelines
Cleaning Your Monitor
WARNING: Before cleaning the monitor, unplug the monitor power cable from
the electrical outlet.
CAUTION: Read and follow the Safety Instructions
before cleaning the monitor.
For best practices, follow these instructions in the list below while unpacking, cleaning, or handling your monitor:
• To clean your anti-static screen, lightly dampen a soft, clean cloth with water. If possible, use a special screen-cleaning tissue or solution suitable for the anti-static coating. Do not use benzene, thinner, ammonia, abrasive cleaners, or compressed air.
• Use a lightly-dampened, soft cloth to clean the monitor. Avoid using detergent of any kind as some detergents leave a milky film on the monitor.
• If you notice white powder when you unpack your monitor, wipe it off with a cloth.
• Handle your monitor with care as a darker-colored monitor may get scratched and show white scuff marks more than a lighter- colored monitor.
• To help maintain the best image quality on your monitor, use a dynamically changing screen saver and turn off your monitor when not in use.
Appendix | 37
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