Dell™ U2412M Monitor User's Guide
Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Information in this document is subject to change without notice.
© 2011 Dell Inc. All rights reserved.
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc; Microsoft and Windows are either trademarks or registered trademarks of Microsoft Corporation in
the United States and/or other countries, Intel is a registered trademark of Intel Corporation in the U.S. and other countries; and ATI is a trademark of Advanced Micro Devices,
Inc. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR partner, Dell Inc. has determined that this product meets the
ENERGY STAR guidelines for energy efficiency.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any
proprietary interest in trademarks and trade names other than its own.
Model U2412Mb
July 2011 Rev. A00
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VGA Cable
DVI Cable
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USB upstream cable (enables the USB ports on the
monitor)
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Drivers and Documentation media
Quick Setup Guide
Product and Safety Information Guide
Product Features
The U2412M flat panel display has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD). The monitor features include:
■ 60.96 cm (24-inch) viewable area display (measured diagonally). 1920 x 1200 resolution, plus full-screen support for lower resolutions.
■ Wide viewing angle to allow viewing from a sitting or standing position, or while moving from side-to-side.
■ Tilt, swivel, vertical extension and rotate adjustment capability.
■ Removable stand and Video Electronics Standards Association (VESA™) 100 mm mounting holes for flexible mounting solutions.
■ Plug and play capability if supported by your system.
■ On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.
■ Software and documentation media includes an information file (INF), Image Color Matching File (ICM), PowerNap software application and product
documentation.
■ Energy Saver feature for Energy Star compliance.
■ Security lock slot.
■ Stand lock.
■ Asset Management Capability.
■ Capability to switch from wide aspect to standard aspect ratio while maintaining the image quality.
■ EPEAT Gold Rating.
■ Halogen Reduced.
■ TCO Certified Displays.
■ PowerNap Software included (comes in the CD shipped with the monitor).
Identifying Parts and Controls
Front View
Front view
Label
Front panel controls
Description
1
2
3
Preset Modes (default, but configurable)
Brightness & Contrast (default, but configurable)
Menu
4
5
Exit
Power (with power light indicator)
Back View
Back view
Label
Back view with monitor stand
Description
Use
VESA mounting holes (100 mm x 100 mm -
behind attached VESA Plate)
1
Wall mount monitor using VESA-compatible wall mount kit (100 mm x 100 mm)
2
3
4
5
6
7
8
Regulatory label
Lists the regulatory approvals
Stand release button
Barcode serial number label
Security lock slot
Release stand from monitor
Refer to this label if you need to contact Dell for technical support
Secures monitor with security cable lock
Attaches the optional Dell Soundbar
Dell Soundbar mounting brackets
USB downstream ports
Cable management slot
Connect your USB devices
Use to organize cables by placing them through the slot
Side View
Left view
Right view
Bottom View
Bottom view
Label
Bottom view with monitor stand
Description
Use
1
2
3
4
5
AC power cord connector
DC power connector for Dell Soundbar
DisplayPort connector
DVI connector
Connect the power cable
Connect the power cord for the soundbar (optional)
Connect your computer DP cable
Connect your computer DVI cable
VGA connector
Connect your computer VGA cable
Connect the USB cable that came with your monitor to the monitor and the
computer. Once this cable is connected, you can use the USB connectors on
the side and bottom of the monitor
6
USB upstream port
Connect your USB devices. You can only use this connector after you have
connected the USB cable to the computer and USB upstream connector on
the monitor
7
8
USB downstream ports
Stand lock feature
To lock the stand to the monitor using M3 x 6 mm screw (screw is not
provided)
Monitor Specifications
Flat Panel Specifications
Model
U2412M
Screen type
Panel type
Active matrix - TFT LCD
IPS
Screen dimensions
Preset display area
Horizontal
60.96 cm (24-inches viewable image size)
518.4 (H) X 324.0 (V) mm
518.4 mm (20.3 inches)
324.0 mm (12.7 inches)
Vertical
Pixel pitch
0.27 mm
178° (vertical) typical
Viewing angle
178° (horizontal) typical
Luminance output
Contrast ratio
Faceplate coating
Backlight
300 cd/m²(typical)
1000 to 1 (typical), 2M to 1 (typical Dynamic Contrast On)
Antiglare with hard-coating 3H
LED edgelight system
Response time
Color depth
8 ms gray-to-gray (typical)
16.7 million colors
Color gamut
82%*
*[U2412M] color gamut (typical) is based on CIE1976 (82%) and CIE1931 (72%) test standards.
Resolution Specifications
Model
U2412M
Horizontal scan range
Vertical scan range
Maximum preset resolution
30 kHz to 83 kHz (automatic)
50 Hz to 61 Hz (automatic)
1920 x 1200 at 60 Hz
Supported Video Modes
Model
U2412M
480p, 576p, 720p, 1080p,
576i, 1080i
Video display capabilities (DVI & DP playback)
Preset Display Modes
U2412M
Horizontal Frequency
Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity (Horizontal/Vertical)
Display Mode
(kHz)
VESA, 720 x 400
VESA, 640 x 480
VESA, 800 x 600
VESA, 1024 x 768
VESA, 1280 x 1024
VESA, 1600 x 1200
31.5
31.5
37.9
48.4
64.0
75.0
70.0
59.9
60.3
60.0
60.0
60.0
28.3
25.2
-/+
-/-
40.0
+/+
-/-
65.0
108.0
162.0
+/+
+/+
VESA, 1680 x 1050
VESA, 1920 x 1080
VESA, 1920 x 1200
64.7
66.6
74.0
59.9
59.9
60.0
119.0
138.5
154.0
+/-
+/-
-/+
Electrical Specifications
Model
U2412M
Analog RGB, 0.7 Volts +/- 5%, positive polarity at 75 ohm input
impedance
Digital DVI-D TMDS, 600mV for each differential line, positive polarity at
50 ohm input impedance
Video input signals
DP 1.1a signal input support
TTL levels required and separate syncs (including Trigger points), SOG
(Composite SYNC on green)
Synchronization input signals
AC input
voltage/frequency/current
100 to 240 VAC / 50 or 60 Hz + 3 Hz / 1.2 A (typical)
120 V : 30 A (Max)
240 V : 60 A (Max)
Inrush current
Physical Characteristics
Model
U2412M
15-pin D-subminiature, blue connector; DVI-D, white
connector; DP, black connector.
Connector type
Digital: detachable, DVI-D, solid pins, shipped detached from the monitor
Analog: attachable, D-Sub, 15pins, shipped detached from the monitor
Signal cable type
Dimensions (with stand)
Height (extended)
Height (compressed)
Width
513.5 mm (20.22 inches)
398.5 mm (15.69 inches)
556.0 mm (21.89 inches)
180.3 mm (7.10 inches)
Depth
Dimensions (without stand)
Height
361.6 mm (14.24 inches)
556.0 mm (21.89 inches)
64.9 mm (2.56 inches)
Width
Depth
Stand dimensions
Height (extended)
Height (compressed)
Width
400.7 mm (15.78 inches)
285.7 mm (11.25 inches)
279.8 mm (11.02 inches)
180.3 mm (7.10 inches)
Depth
Weight
Weight with packaging
Weight with stand assembly and cables
Weight without stand assembly
16.48 lbs (7.49 kg)
13.73 lbs (6.24 kg)
(For wall mount or VESA mount considerations - 8.73 lbs (3.97 kg)
no cables)
Weight of stand assembly
Front frame gloss
3.87 lbs (1.76 kg)
5.0 gloss unit (max.) (Black Frame)
20.0 gloss unit (max.) (Silver Frame)
Environmental Characteristics
Model
U2412M
Temperature
Operating
0 °C to 40 °C
Storage: -20 °C to 60 °C (-4 °F to 140 °F)
Shipping: -20 °C to 60 °C (-4 °F to 140 °F)
Non-operating
Humidity
Operating
10% to 80% (non-condensing)
Storage: 5% to 90% (non-condensing)
Shipping: 5% to 90% (non-condensing)
Non-operating
Altitude
Operating
Non-operating
3,048 m (10,000 ft) max
10,668 m (35,000 ft) max
245.66 BTU/hour (maximum)
129.66 BTU/hour (typical)
Thermal dissipation
Power Management Modes
If you have VESA's DPM™ compliance display 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:
U2412M
VESA Modes
Horizontal Sync Vertical Sync Video
Power Indicator Power Consumption
Normal
operation
Active
Active
Active
Blue
72 W (maximum) **
29 W (typical)
Active-off mode Inactive
Switch off
Inactive
-
Blanked
-
Amber
Off
Less than 0.5 W
Less than 0.5 W
-
The OSD will only function in the normal operation mode. When any button is pressed in Active-off mode, one of the following messages will be displayed:
Activate the computer and the monitor to gain access to the OSD.
®
NOTE: This monitor is ENERGY STAR -compliant.
*
Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the monitor.
** Maximum power consumption with max luminance, Dell Soundbar, and USB active.
Pin Assignments
VGA Connector
Pin
15-pin Side of the Connected Signal Cable
Number
1
2
Video-Red
Video-Green
3
4
Video-Blue
GND
5
Self-test
GND-R
6
7
GND-G
8
GND-B
9
Computer 5V/3.3V
GND-sync
GND
10
11
12
13
14
15
DDC data
H-sync
V-sync
DDC clock
DVI Connector
Pin
24-pin Side of the Connected Signal Cable
Number
1
2
3
4
5
TMDS RX2-
TMDS RX2+
TMDS Ground
Floating
Floating
6
DDC Clock
DDC Data
7
8
Floating
9
TMDS RX1-
TMDS RX1+
TMDS Ground
Floating
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Floating
+5V/+3.3V power
Self test
Hot Plug Detect
TMDS RX0-
TMDS RX0+
TMDS Ground
Floating
Floating
TMDS Ground
TMDS Clock+
TMDS Clock-
DisplayPort Connector
Pin
20-pin Side of the Connected Signal Cable
Number
1
2
ML0(p)
GND
3
ML0(n)
ML1(p)
GND
4
5
6
ML1(n)
ML2(p)
GND
7
8
9
ML2(n)
ML3(p)
GND
10
11
12
13
14
15
16
17
18
19
20
ML3(n)
GND
GND
AUX(p)
GND
AUX(n)
HPD
DP_PWR Return
+3.3V DP_PWR
Plug and Play Capability
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 system 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 Operating the Monitor.
Universal Serial Bus (USB) Interface
This section gives you information about the USB ports that are available on the left side of your monitor.
NOTE: This monitor supports High-Speed Certified USB 2.0 interface.
Transfer Speed
High speed
Full speed
Data Rate Power Consumption
480 Mbps
12 Mbps
1.5 Mbps
2.5W (Max, each port)
2.5W (Max, each port)
2.5W (Max, each port)
Low speed
USB Upstream Connector
Pin Number 4-pin Side of the Connector
1
2
3
4
DMU
VCC
DPU
GND
USB Downstream Connector
Pin Number
4-Pin Side of the Signal Cable
1
2
3
4
VCC
DMD
DPD
GND
USB Ports
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1 upstream - back
4 downstream - 2 on the back; 2 on the left side
NOTE: USB 2.0 functionality requires a USB 2.0-capable computer.
NOTE: The monitor's USB interface works only when the monitor is on or in power save mode. If you turn off the monitor and then turn it on, the attached pe
take a few seconds to resume normal functionality.
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 Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com.
Maintenance Guidelines
Cleaning Your Monitor
WARNING: Before cleaning the monitor, unplug the monitor power cable from the electrical outlet.
For best practices, follow the instructions in the list below while unpacking, cleaning, or handling your monitor:
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To clean your antistatic screen, lightly dampen a soft, clean cloth with water. If possible, use a special screen-cleaning tissue or solution suitable for the
antistatic coating. Do not use benzene, thinner, ammonia, abrasive cleaners, or compressed air.
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Use a lightly-dampened, warm 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 scratch 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
Dell™ U2412M Monitor User's Guide
WARNING: Safety Instructions
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 Product Information Guide.
FCC Notices (U.S. Only) and Other Regulatory Information
For FCC notices and other regulatory information, see the regulatory compliance website located at www.dell.com\regulatory_compliance.
Contacting Dell
For customers in the United States, call 800-WWW-DELL (800-999-3355).
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 contact Dell for sales, technical support, or customer service issues:
1. Visit support.dell.com.
2. Verify your country or region in the Choose A Country/Region drop-down menu at the bottom of the page.
3. Click Contact Us on the left side of the page.
4. Select the appropriate service or support link based on your need.
5. Choose the method of contacting Dell that is convenient for you.
Help on PowerNap Installation
To install PowerNap succesfully, follow these steps:-
®
®
1. Check Operating System Requirements
2. Install Entech API
Windows XP, Windows Vista , Windows
7
3. Install PowerNap Software
Setting Up Your Monitor
Dell™ U2412M Monitor
If you have a Dell™ desktop or a Dell™ portable computer with internet access
1. Go to http://support.dell.com, 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 1920 x 1200 again.
NOTE: If you are unable to set the resolution to 1920 x 1200, please contact Dell™ to inquire about a Graphics Adapter that supports these resolutions.
Setting Up Your Monitor
Dell™ U2412M Monitor
If you have a non Dell™ desktop, portable computer, or graphics card
In Windows XP:
1. Right-click on the desktop and click Properties.
2. Select the Settings tab.
3. Select Advanced.
4. Identify your graphics controller supplier from the description at the top of the window (e.g. NVIDIA, ATI, Intel etc.).
5. Refer to the graphic card provider website for updated driver (for example, http://www.ATI.com OR http://www.NVIDIA.com ).
6. After installing the drivers for your Graphics Adapter, attempt to set the resolution to 1920 x 1200 again.
®
®
In Windows Vista or Windows 7:
1. Right-click on the desktop and click Personalization.
2. Click Change Display Settings.
3. Click Advanced Settings.
4. Identify your graphics controller supplier from the description at the top of the window (e.g. NVIDIA, ATI, Intel etc.).
5. Refer to the graphic card provider website for updated driver (for example, http://www.ATI.com OR http://www.NVIDIA.com ).
6. After installing the drivers for your Graphics Adapter, attempt to set the resolution to 1920 x 1200 again.
NOTE: If you are unable to set the resolution to 1920 x 1200, please contact the manufacturer of your computer or consider purchasing a graphics
adapter that will support the video resolution of 1920 x 1200.
Operating the Monitor
Dell™ U2412M Monitor User's Guide
PowerNap Software
Setting the Maximum Resolution
Using the Dell Soundbar (Optional)
Using the Tilt, Swivel, and Vertical Extension
Rotating the monitor
Adjusting the Rotation Display Settings of Your System
Using the Front Panel
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.
The following table describes the front panel buttons:
Front Panel Button
Description
Use this button to choose from a list of preset color modes.
1
Shortcut
key/
Preset
Modes
2
Use this button to directly access the "Brightness/Contrast" menu.
Shortcut key /
Brightness/Contrast
3
4
Use the MENU button to launch the on-screen display (OSD) and select the OSD Menu. See Accessing the Menu
Menu
Use this button to go back to the main menu or exit the OSD main menu.
Exit
5
Use the Power button to turn the monitor on and off.
The blue LED indicates the monitor is on and fully functional. An amber LED indicates power save mode.
Power
(with power light
indicator)
Using the On-Screen Display (OSD) Menu
Accessing the Menu System
NOTE: If you change the settings and then either proceed to another menu or exit the OSD menu, the monitor automatically saves those changes. The
changes are also saved if you change the settings and then wait for the OSD menu to disappear.
1. Push the
button to launch the OSD menu and display the main menu.
Main Menu for analog (VGA) input
or
Main Menu for digital (DVI) input
or
Main Menu for display (DP) input
NOTE: Auto Adjust is only available when you use the analog (VGA) connector.
2.Push the
and
buttons to move between the setting options. As you move from one icon to another, the option name is highlighted. See the
following table for a complete list of all the options available for the monitor.
3.Push the
button once to activate the highlighted option.
4.Push
5. Push
and
button to select the desired parameter.
to enter the slide bar and then use the
and
buttons, according to the indicators on the menu, to make your changes.
6.Select the
button to return to the main menu.
Icon Menu and
Description
Submenus
Brightness/Contrast Use this menu to activate Brightness/Contrast adjustment.
Brightness
Brightness adjusts the luminance of the backlight.
Push the button to increase brightness and push the
button to decrease brightness (min 0 ~ max 100).
NOTE: Manual adjustment of Brightness is disabled when Energy Smart or Dynamic Contrast is switched on.
Contrast
Adjust Brightness first, and then adjust Contrast only if further adjustment is necessary.
Push the
button to increase contrast and push the
button to decrease contrast (min 0 ~ max 100).
The Contrast function adjusts the degree of difference between darkness and lightness on the monitor screen.
Auto Adjust
Even though your computer recognizes your monitor on startup, the Auto Adjustment function optimizes the display settings
with your particular setup.
Auto Adjustment allows the monitor to self-adjust to the incoming video signal. After using Auto Adjustment, you can further tu
monitor by using the Pixel Clock (Coarse) and Phase (Fine) controls under Display Settings.
NOTE: In most cases, Auto Adjust produces the best image for your configuration.
NOTE: Auto Adjust option is only available when you are using the analog (VGA) connector.
Input Source
Use the Input Source menu to select between different video signals that may be connected to your monitor.
Auto Select
VGA
Push
to select Auto Select, the monitor will auto detect either VGA input or DVI-D input or DislpayPort input.
Select VGA input when you are using the analog (VGA) connector. Push
to select the VGA input source.
DVI-D
Select DVI-D input when you are using the Digital (DVI) connector. Push
to select the DVI input source.
DisplayPort
Select DisplayPort input when you are using the DisplayPort (DP) connector. Push
to select the DisplayPort input source.
Color Settings
Use Color Settings to adjust the color setting mode and color temperature.
There are different color setting sub-menus for VGA/DVI-D and Video input.
Input Color Format Choose the RGB option if monitor is connected to a computer or a DVD using a VGA or DVI cable. Choose the YPbPr option if m
connected to a DVD by a YPbPr to VGA or YPbPr to DVI cable or if the DVD color output setting is not RGB.
Gamma
Allows you to set the color mode to PC or MAC.
Preset Modes
When you select Preset Modes, you can choose Standard, Multimedia, Movie, Game, Text, Color Temp. or Custom Color fro
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Standard: Loads the monitor's default color settings. This is the default preset mode.
Multimedia: Loads color settings ideal for multimedia applications.
Movie: Loads color settings ideal for movies.
Game: Loads color settings ideal for most gaming applications.
Text: Loads brightness and sharpness settings ideal for viewing texts.
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Color Temp.: Allows you to manually adjust the color temperature. Press the
and
buttons to adjust the valu
screen appears warmer with a red/yellow tint when you set the slider at 5000K or cooler with a blue tint when you set
at 10000K.
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Custom Color: Allows you to manually adjust the color settings. Press the
and
buttons to adjust the three co
B) values and create your own preset color mode.
Hue
This feature can shift the color of the video image to green or purple. This is used to adjust the desired flesh tone color. Use
to adjust the hue from '0' to '100'.
Press
Press
to increase the green shade of the video image.
to increase the purple shade of the video image.
NOTE: Hue adjustment is available only when you select Movie or Game preset mode.
This feature can adjust the color saturation of the video image. Use or to adjust the saturation from '0' to '100'.
Saturation
Press
Press
to increase the monochrome appearance of the video image.
to increase the colorful appearance of the video image.
NOTE: Saturation adjustment is available only when you select Movie or Game preset mode.
Reset Color Setting Reset your monitor color settings to the factory settings.
s
Display Settings
Use the Display Settings to adjust image.
Setting Up Your Monitor
Dell™ U2412M Monitor
Setting the display resolution to 1920 x 1200 (maximum)
®
®
For maximum display performance with Microsoft Windows operating systems, set the display resolution to 1920 x 1200 pixels by performing the following
steps:
In Windows XP:
1. Right-click on the desktop and click Properties.
2. Select the Settings tab.
3. Move the slider-bar to the right by pressing and holding the left-mouse button and adjust the screen resolution to 1920 x 1200.
4. Click OK.
®
®
In Windows Vista or Windows 7:
1. Right-click on the desktop and click Personalization.
2. Click Change Display Settings.
3. Move the slider-bar to the right by pressing and holding the left-mouse button and adjust the screen resolution to 1920 x 1200.
4. Click OK.
If you do not see 1920 x 1200 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
Dell™ U2412M Monitor
Information in this document is subject to change without notice.
© 2011 Dell Inc. All rights reserved.
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc; Microsoft and Windows are either trademarks or registered trademarks of
Microsoft Corporation in the United States and/or other countries, Intel is a registered trademark of Intel Corporation in the U.S. and other countries; and ATI
is a trademark of Advanced Micro Devices, Inc. ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR
partner, Dell Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc.
disclaims any proprietary interest in trademarks and trade names other than its own.
Model U2412Mb
July 2011 Rev. A00
Setting Up the Monitor
Dell™ U2412M Monitor User's Guide
Attaching the Stand
NOTE: The stand is detached when the monitor is shipped from the factory.
NOTE: This is applicable for a monitor with a stand. When any other stand is bought, please refer to the respective stand setup guide for set up
instructions.
To attach the monitor stand:
1. Remove the cover and place the monitor on it.
2. Fit the two tabs on the upper part of the stand to the groove on the back of the monitor.
3. Press the stand till it snaps into its place.
Connecting Your Monitor
To connect your monitor to the computer:
1. Turn off your computer and disconnect the power cable.
Connect the blue (VGA) cable from your monitor to your computer.
NOTE: If your computer supports a white DVI connector, connect the white DVI cable to the monitor and the white DVI connector
on your computer.
NOTE: Do not connect the blue VGA, the white DVI, or the black DisplayPort cables to the computer at the same time.
2. Connect the white (digital DVI-D) or the blue (analog VGA) or the black (DisplayPort) display connector cable to the corresponding video port on the back
of your computer. Do not use the three cables on the same computer. Use all cables only when they are connected to three different computers with
appropriate video systems.
Connecting the white DVI cable
Connecting the blue VGA cable
Connecting the black DisplayPort cable
CAUTION: The graphics are used for the purpose of illustration only. Appearance of the computer may vary.
Connecting the USB cable
After you have completed connecting the DVI/VGA/DP cable, follow the procedures below to connect the USB cable to the computer and complete your monitor
setup:
1. Connect the upstream USB port (cable supplied) to an appropriate USB port on your computer. (See bottom view for details.)
2. Connect USB peripherals to the downstream USB ports (side or bottom) on the monitor. (See side or bottom view for details.)
3. Plug the power cables for your computer and monitor into a nearby outlet.
4. Turn on the monitor and the computer.
If your monitor displays an image, installation is complete. If it does not display an image, see Solving Problems.
5. Use the cable slot on the monitor stand to organize the cables.
Organizing Your Cables
After attaching all necessary cables to your monitor and computer, (See Connecting Your Monitor for cable attachment,) organize all cables as shown above.
Attaching the Soundbar (Optional)
CAUTION: Do not use with any device other than the Dell Soundbar.
NOTE: The Soundbar power connector (+12 V DC output) is for the optional Dell Soundbar only.
To attach the Soundbar:
1. Working from the back of the monitor, attach the Soundbar by aligning the two slots with the two tabs along the bottom of the monitor.
2. Slide the Soundbar to the left until it snaps into place.
3. Connect the Soundbar with the DC power connector.
4. Insert the mini stereo plug from the back of the Soundbar into the computer's audio output jack.
Removing the Stand
NOTE: To prevent scratches on the LCD screen while removing the stand, ensure that the monitor is placed on a soft, clean surface.
NOTE: This is applicable for a monitor with a stand. When any other stand is bought, please refer to the respective stand setup guide for set up
instructions.
To remove the stand:
1. Place the monitor on a flat surface.
2. Press and hold the stand release button.
3. Lift the stand up and away from the monitor.
Wall Mounting (Optional)
(Screw dimension: M4 x 10 mm).
Refer to the instructions that come with the VESA-compatible wall mounting kit.
1. Place the monitor panel on a soft cloth or cushion on a stable, flat table.
2. Remove the stand.
3. Use a Philips 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 came with the wall mounting kit.
NOTE: For use only with UL Listed Wall Mount Bracket with minimum weight/load bearing capacity of 4.52 kg.
Troubleshooting
Dell™ U2412M Monitor User's Guide
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 (white connector) and the Analog (blue
connector) 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 green. Also, depending upon the selected input, one of the dialogs shown below will continuously
scroll through the screen.
or
1. This box also appears during normal system operation if the video cable becomes disconnected or damaged.
2. 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.
Built-in Diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with your monitor, or
with your computer and video card.
NOTE: You can run the built-in diagnostics only when the video cable is unplugged and the monitor is in self-test mode.
To run the built-in diagnostics:
1. Ensure that the screen is clean (no dust particles on the surface of the screen).
2. Unplug the video cable(s) from the back of the computer or monitor. The monitor then goes into the self-test mode.
3. Press and hold Button 1 and Button 4 on the front panel simultaneously for 2 seconds. A gray screen appears.
4. Carefully inspect the screen for abnormalities.
5. Press Button 4 on the front panel again. The color of the screen changes to red.
6. Inspect the display for any abnormalities.
7. Repeat steps 5 and 6 to inspect the display in green, blue, black and white screens.
The test is complete when the white screen appears. To exit, press Button 4 again.
If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly. Check the video card and computer.
Common Problems
The following table contains general information about common monitor problems you might encounter and the possible solutions:
Common Symptoms
No Video/Power LED off
What You Experience
No picture
Possible Solutions
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Ensure that the video cable connecting the monitor and the computer is properly
connected and secure.
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Verify that the power outlet is functioning properly using any other electrical equipment.
Ensure that the power button is depressed fully.
No Video/Power LED on
No picture or no brightness
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l
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Increase brightness & contrast controls via OSD.
Perform monitor self-test feature check.
Check for bent or broken pins in the video cable connector.
Run the built-in diagnostics.
Poor Focus
Picture is fuzzy, blurry, or
ghosting
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l
l
l
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Perform Auto Adjust via OSD.
Adjust the Phase and Pixel Clock controls via OSD.
Eliminate video extension cables.
Reset the monitor to Factory Settings.
Change the video resolution to the correct aspect ratio (16:10).
Shaky/Jittery Video
Wavy picture or fine movement
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l
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Perform Auto Adjust via OSD.
Adjust the Phase and Pixel Clock controls via OSD.
Reset the monitor to Factory Settings.
Check environmental factors.
Relocate the monitor and test in another room.
Missing Pixels
LCD screen has spots
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l
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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:
support.dell.com.
Stuck-on Pixels
LCD screen has bright spots
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l
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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:
support.dell.com.
Brightness Problems
Geometric Distortion
Picture too dim or too bright
Screen not centered correctly
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l
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Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Adjust brightness & contrast controls via OSD.
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l
l
Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Adjust horizontal & vertical controls via OSD.
NOTE: When using DVI-D input, the positioning adjustments are not available.
Horizontal/Vertical Lines
Screen has one or more lines
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l
l
l
Reset the monitor to Factory Settings.
Perform Auto Adjust via OSD.
Adjust Phase and Pixel Clock controls via OSD.
Perform monitor self-test feature check and determine if these lines are also in self-test
mode.
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Check for bent or broken pins in the video cable connector.
Run the built-in diagnostics.
NOTE: When using DVI-D input, the Pixel Clock and Phase adjustments are not available.
Synchronization Problems
Screen is scrambled or appears
torn
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l
l
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Reset the monitor to Factory Settings.
Perform Auto Adjust via OSD.
Adjust Phase and Pixel Clock controls via OSD.
Perform monitor self-test feature check to determine if the scrambled screen appears in
self-test mode.
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l
Check for bent or broken pins in the video cable connector.
Restart the computer in the safe mode.
Safety Related Issues
Intermittent Problems
Visible signs of smoke or
sparks
l
l
Do not perform any troubleshooting steps.
Contact Dell immediately.
Monitor malfunctions on & off
l
Ensure that the video cable connecting the monitor to the computer is connected
properly and is secure.
l
l
Reset the monitor to Factory Settings.
Perform monitor self-test feature check to determine if the intermittent problem occurs in
self-test mode.
Missing Color
Wrong Color
Picture missing color
Picture color not good
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l
Perform monitor self-test feature check.
Ensure that the video cable connecting the monitor to the computer is connected
properly and is secure.
l
Check for bent or broken pins in the video cable connector.
l
l
Change the Color Setting Mode in the Color Settings OSD to Graphics or Video
depending on the application.
Try different Color Preset Settings in Color Settings OSD. Adjust R/G/B value in Color
Settings OSD if the Color Management is turned off.
l
l
Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.
Run the built-in diagnostics.
Image retention from a static Faint shadow from the static
image left on the monitor for a image displayed appears on
l
l
Use the Power Management feature to turn off the monitor at all times when not in use
Alternatively, use a dynamically changing screensaver.
long period of time
the screen
Product Specific Problems
Specific Symptoms
What You Experience
Possible Solutions
Screen image is too small
Image is centered on screen,
but does not fill entire viewing
area
l
l
Check the Scaling Ratio setting in Image Setting OSD
Reset the monitor to Factory Settings.
Cannot adjust the monitor withOSD does not appear on the
the buttons on the front panel screen
l
l
Turn off the monitor, unplug the power cord, plug it back, and then turn on the monitor.
Check whether the OSD menu is locked. If yes, press and hold the button above the
No input signal when user
controls are pressed
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l
l
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.
No picture, the LED light is blue
Reset the computer or video player.
The picture does not fill the
entire screen.
The picture cannot fill the
height or width of the screen
l
l
Due to different video formats (aspect ratio) of DVDs, the monitor may display in full
screen.
Run the built-in diagnostics.
NOTE: When choosing DVI-D mode, the Auto Adjust function will not be available.
Universal Serial Bus (USB) Specific Problems
Specific Symptoms
USB interface is not working
What You Experience
USB peripherals are not
working
Possible Solutions
Check that your monitor is turned ON.
Reconnect the upstream cable to your computer.
Reconnect the USB peripherals (downstream connector).
Switch off and then turn on the monitor again.
Reboot the computer.
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Some USB devices like external portable HDD require higher electric current; connect the
device directly to the computer system.
High Speed USB 2.0 interface isHigh Speed USB 2.0
slow. peripherals working slowly or
not working at all
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Check that your computer is USB 2.0-capable.
Some computers have both USB 2.0 and USB 1.1 ports. Ensure that the correct USB port
is used.
Reconnect the upstream cable to your computer.
Reconnect the USB peripherals (downstream connector).
Reboot the computer.
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Dell™ Soundbar Problems
Common Symptoms
No Sound
What You Experience
No power to Soundbar - the
power indicator is off
Possible Solutions
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Turn the Power/Volume knob on the Soundbar clockwise to the middle position; check if
the power indicator (Blue LED) on the front of the Soundbar is illuminated.
Confirm that the power cable from the Soundbar is plugged into the adapter.
No Sound
Soundbar has power - power
indicator is on
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l
l
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Plug the audio line-in cable into the computer's audio out jack.
Set all Windows volume controls to their maximum.
Play some audio content on the computer (i.e. audio CD, or MP3).
Turn the Power/Volume knob on the Soundbar clockwise to a higher volume setting.
Clean and reseat the audio line-in plug.
Test the Soundbar using another audio source (i.e. portable CD player).
Distorted Sound
Computer's sound card is used
as the audio source
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Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the sound card.
Set all Windows volume controls to their midpoints.
Decrease the volume of the audio application.
Turn the Power/Volume knob on the Soundbar counter-clockwise to a lower volume
setting.
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l
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Clean and reseat the audio line-in plug.
Troubleshoot the computer's sound card.
Test the Soundbar using another audio source (i.e. portable CD player).
Distorted Sound
Other audio source is used
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Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the audio
source.
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Decrease the volume of the audio source.
Turn the Power/Volume knob on the Soundbar counter-clockwise to a lower volume
setting.
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Clean and reseat the audio line-in plug.
Unbalanced Sound Output
Sound from only one side of
Soundbar
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l
Clear any obstructions between the Soundbar and the user.
Confirm that the audio line-in plug is completely inserted into the jack of the sound card
or audio source.
l
l
l
l
Set all Windows audio balance controls (L-R) to their midpoints.
Clean and reseat the audio line-in plug.
Troubleshoot the computer's sound card.
Test the Soundbar using another audio source (i.e. portable CD player).
Low Volume
Volume is too low
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l
Clear any obstructions between the Soundbar and the user.
Turn the Power/Volume knob on the Soundbar clockwise to the maximum volume
setting.
l
l
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Set all Windows volume controls to their maximum.
Increase the volume of the audio application.
Test the Soundbar using another audio source (i.e. portable CD player).
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