Dell Computer Monitor U2412Mb User Manual

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: Read and follow the safety instructions before cleaning the 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.  
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®
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
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.  
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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  
WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions.  
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  
WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions.  
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.  
Ensure that the correct input source is selected via the Input Source Select button.  
No Video/Power LED on  
No picture or no brightness  
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l
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.  
Ensure that the correct input source is selected via the Input Source Select button.  
Poor Focus  
Picture is fuzzy, blurry, or  
ghosting  
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l
l
l
l
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
l
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  
l
l
l
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
l
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
l
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  
l
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.  
l
l
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  
l
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 to determine if the scrambled screen appears in  
self-test mode.  
l
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  
l
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  
(for more information, see Power Management Modes).  
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  
Power button for 10 seconds to unlock (for more information, see Menu Lock).  
No input signal when user  
controls are pressed  
l
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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l
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l
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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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l
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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l
l
     
Dell™ Soundbar Problems  
Common Symptoms  
No Sound  
What You Experience  
No power to Soundbar - the  
power indicator is off  
Possible Solutions  
l
l
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
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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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l
l
l
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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.  
l
l
l
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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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 audio  
source.  
l
l
Decrease the volume of the audio source.  
Turn the Power/Volume knob on the Soundbar counter-clockwise to a lower volume  
setting.  
l
Clean and reseat the audio line-in plug.  
Unbalanced Sound Output  
Sound from only one side of  
Soundbar  
l
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.  
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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  
l
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
l
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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