Dell Computer Monitor ST2220L User Manual

Dell™ ST2220L/ST2220M monitor User's Guide  
Notes, Notices, and Cautions  
NOTE: A NOTE indicates important information that helps you make better use of your computer.  
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.  
CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.  
Information in this document is subject to change without notice.  
© 2010 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; 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.  
ST2220Lb/ST2220Mb/ST2220Lc/ST2220Mc  
June 2010 Rev. A00  
 
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Safety Information  
Drivers and Documentation media  
Quick Setup Guide  
Product Features  
The ST2220L/ST2220M flat panel display has an active matrix, Thin-Film Transistor (TFT), and Liquid Crystal Display (LCD). The monitor features include:  
ST2220L/ST2220M: 54.61cm (21.5") viewable area display.  
1920 x 1080 resolution, plus full-screen support for lower resolutions.  
Tilt adjustment capability.  
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 CD which includes an information file (INF), Image Color Matching File (ICM), and product documentation.  
Energy Saver feature for Energy Star compliance.  
Security lock slot.  
Identifying Parts and Features  
Front View  
Front View  
Front Panel Controls  
Label Description  
1-2  
Shortcut keys  
*The default settings are Preset Modes and Brightness/Contrast.  
1
2
Shortcut key: Preset Modes (Default)  
Shortcut key: Brightness/Contrast (Default)  
3
4
5
OSD menu select  
EXIT  
Power On/Off (light indicator below Dell logo)  
Back View  
   
Back View  
Label  
Description/Use  
To contact Dell for technical support.  
1
2
3
Barcode serial number label  
Security lock slot  
To help secure your monitor.  
Dell Soundbar mounting brackets  
To attach the optional Dell Soundbar.  
4
5
Regulatory rating label  
Stand release button  
Lists the regulatory approvals.  
To release stand assembly from monitor.  
Side View  
Left Side  
Bottom View  
Bottom view  
Label  
Description  
AC power cord connector  
1
2
3
Label  
Description  
DVI connector  
HDMI connector  
VGA connector  
AC power cord connector  
1
2
3
DVI connector  
VGA connector  
4
5
6
Audio Line-in  
Audio Line out  
Monitor Specifications  
Power Management Modes  
If you have VESA's DPMS™ 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 input from a keyboard, mouse or other input devices is detected by the computer, the monitor will automatically  
"wake up". The following table shows the power consumption and signaling of this automatic power-saving feature:  
ST2220L/ST2220M  
VESA Modes  
Horizontal  
Sync  
Vertical Sync  
Video  
Power  
Indicator  
Power Consumption  
Normal operation  
Active  
Active  
Active  
White  
28 W (maximum)  
20 W (typical)  
Less than 1 W  
Less than 0.5 W  
Active-off mode  
Switch off  
Inactive  
-
Inactive  
-
Blanked  
-
Amber  
Off  
®
NOTE: This monitor is ENERGY STAR -compliant.  
NOTE: Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the  
monitor.  
Pin Assignments  
VGA Connector  
Pin  
Number  
15-pin Side of the  
Connected Signal Cable  
   
1
Video-Red  
Video-Green  
Video-Blue  
GND  
2
3
4
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  
Number  
24-pin Side of the Connected Signal  
Cable  
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 power  
Self test  
Hot Plug Detect  
TMDS RX0-  
TMDS RX0+  
TMDS Ground  
Floating  
Floating  
TMDS Ground  
TMDS Clock+  
TMDS Clock-  
HDMI Connector (for selective models)  
Pin Number  
19-pin Side of the Connected Signal Cable  
1
TMDS DATA 2+  
2
TMDS DATA 2 SHIELD  
TMDS DATA 2-  
3
4
TMDS DATA 1+  
5
TMDS DATA 1 SHIELD  
TMDS DATA 1-  
6
7
TMDS DATA 0+  
8
TMDS DATA 0 SHIELD  
TMDS DATA 0-  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
TMDS CLOCK  
TMDS CLOCK SHIELD  
TMDS CLOCK-  
CEC  
Reserved (N.C. on device)  
DDC CLOCK (SCL)  
DDC DATA (SDA)  
DDC/CEC Ground  
+5V POWER  
HOT PLUG DETECT  
Flat Panel Specifications  
Model  
ST2220L/ST2220M  
Screen type  
Panel type  
Active matrix - TFT LCD  
TN  
Screen dimensions  
54.61cm (21.5 inches) (21.5-inch viewable image size)  
Preset display area: Horizontal  
Vertical  
476.64 mm (18.76 inches)  
268.11 mm (10.56 inches)  
Pixel pitch  
0.248 mm  
Viewing angle  
Luminance output  
Dynamic Contrast Ratio  
Faceplate coating  
Backlight  
160° (vertical) typical, 170° (horizontal) typical  
250 CD/m ²(typical)  
8,000,000 to 1*  
Antiglare with hard-coating 3H  
LED light bar system  
5 ms typical  
Response Time  
Color Depth  
16.7 mil colors  
Color Gamut  
78 %**  
* Based on estimation  
** ST2220L/ST2220M Color Gamut (Typical) is based on CIE1976 (78 %) and CIE1931 (68 %).  
Resolution  
Model  
ST2220L/ST2220M  
Horizontal scan range  
Vertical scan range  
Maximum preset resolution  
30 kHz to 83 kHz (automatic)  
56 Hz to 76 Hz (automatic)  
1920 x 1080 at 60 Hz  
Video Supported Modes  
Model  
ST2220L/ST2220M  
Video display capabilities (HDMI playback)  
480i/480p/576i/576p/720p/1080i/1080p  
Preset Display Modes  
ST2220L/ST2220M  
Display Mode  
Horizontal Frequency  
Vertical Frequency  
(Hz)  
Pixel Clock  
(MHz)  
Sync Polarity (Horizontal/Vertical)  
(kHz)  
VGA, 720 x 400  
31.469  
31.469  
37.500  
37.879  
46.875  
48.363  
60.023  
67.500  
64.000  
79.976  
67.500  
70.087  
59.940  
75.000  
60.317  
75.000  
60.004  
75.029  
75.000  
60.000  
75.025  
60.000  
28.3  
25.2  
-/+  
-/-  
VGA, 640 x 480  
VGA, 640 x 480  
31.5  
-/-  
VESA, 800 x 600  
VESA, 800 x 600  
VESA, 1024 x 768  
VESA, 1024 x 768  
VESA. 1152 x 864  
VESA, 1280 x 1024  
VESA, 1280 x 1024  
VESA, 1920 x 1080  
40.0  
+/+  
+/+  
-/-  
49.5  
65.0  
78.8  
+/+  
+/+  
+/+  
+/+  
+/+  
108.0  
108.0  
135.0  
148.5  
Electrical  
Model  
ST2220L/ST2220M  
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  
HDMI, 600mV for each differential line, 100 ohm input impedance per differential pair  
(for ST2220L)  
Separate horizontal and vertical synchronizations, polarity-free TTL level, SOG  
(Composite SYNC on green)  
Synchronization input signals  
AC input voltage/frequency/current  
Inrush iso surge current  
100 to 240 VAC/50 or 60 Hz + 3 Hz/2.0A (Max.)  
120 V: 30 A (Max.)  
240 V: 60 A (Max.)  
Physical Characteristics  
Model  
ST2220L/ST2220M  
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D-sub: Blue connector  
DVI-D: White connector  
HDMI (for selective models)  
Connector type  
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D-sub: Detachable, Analog, 15 pin, shipped attached to the monitor  
DVI-D  
HDMI (for selective models)  
Signal cable type  
Dimensions (with stand)  
Height  
Width  
385.86 mm (15.19 inches)  
520.64 mm (20.50 inches)  
203.68 mm (8.02 inches)  
Depth  
Dimensions (without stand)  
Height  
326.02 mm (12.84 inches)  
520.64 mm (20.50 inches)  
59.40 mm (2.34 inches)  
Width  
Depth  
Stand dimensions  
Height  
149.85 mm ( 5.90 inches)  
203.68 mm (8.02 inches)  
203.68 mm (8.02 inches)  
Width  
Depth  
Weight  
Weight with packaging  
5.19 kg (11.43 lb)  
Weight with stand assembly and  
cables  
4.09 kg (9.01 lb)  
Weight without stand assembly  
(for wall mount or VESA mount  
considerations - no cables)  
3.10 kg (6.83 lb)  
0.67 kg (1.48 lb)  
Weight of stand assembly  
Environmental  
Model  
ST2220L/ST2220M  
Temperature  
Operating  
0° to 40° C (32° to 104°F)  
Storage: -20° to 60° C (-4° to 140° F)  
Shipping: -20° to 60° C (-4° 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  
4,485 m (14,700 ft) max  
12,191 m (40,000 ft) max  
95.54 BTU/hour (maximum)  
68.24 BTU/hour (typical)  
Thermal dissipation  
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 that the system can configure itself and optimize the monitor settings. If required,  
the user can select different settings, but in most cases monitor installation is automatic.  
LCD Monitor Quality & Pixel Policy  
During the LCD Monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state. The visible result is a fixed  
pixel that appears as an extremely tiny dark or bright discolored spot. When the pixel remains permanently lit, it is known as a "bright dot." When the pixel  
remains black, it is known as a "dark dot."  
In almost every case, these fixed pixels are hard to see and do not detract from display quality or usability. A display with 1 to 5 fixed pixels is considered  
normal and within competitive standards. For more information, see Dell Support site at: support.dell.com.  
Maintenance Guidelines  
Caring for Your Monitor  
     
CAUTION: Read and follow the Safety Instructions before cleaning the  
monitor.  
CAUTION: Before cleaning the monitor, unplug the monitor 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 a white powder when you unpack your monitor, wipe it off with a cloth.  
Handle your monitor with care as dark-colored monitors may scratch and show white scuff marks more than lighter-colored monitors.  
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™ ST2220L/ST2220M monitor User's Guide  
CAUTION: Safety Instructions  
CAUTION: 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 Information that ships with your monitor.  
FCC Notice (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.  
       
Setting Up Your Monitor  
Dell™ ST2220L/ST2220M 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 1920x1080 again.  
NOTE: If you are unable to set the resolution to 1920x1080 , please contact Dell™ to inquire about a Graphics Adapter that supports these resolutions.  
 
Setting Up Your Monitor  
Dell™ ST2220L/ST2220M 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. Please refer to the graphics 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 1920x1080 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. Please refer to the graphics 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 1920x1080 again.  
NOTE: If you are unable to set the resolution to 1920x1080 , please contact the manufacturer of your computer or consider purchasing a graphics adapter  
that will support the video resolution of 1920x1080 .  
 
Operating the Monitor  
Dell™ ST2220L/ST2220M monitor User's Guide  
Using the Front Panel  
Use the control buttons on the side 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.  
1-2  
1
Shortcut keys  
Use this button for direct access to the control menu that you define in the personalize menu.  
*The default settings are Preset Modes Select and Brightness/Contrast Select.  
Use this button for different display preset modes on your monitor.  
Use this button to access the "Brightness/Contrast" control menu.  
Use this button to open the On-Screen Display (OSD). See Using the OSD Menu.  
Use this button to exit the OSD menu.  
Preset Modes Select  
Brightness/Contrast  
OSD Menu  
2
3
4
5
Exit  
Use the power button to turn the monitor on and off.  
Power button  
The white light indicates that the monitor is on and fully functional. An amber light indicates power save mode.  
Using the On-Screen Display (OSD) Menu  
NOTE: If you change the settings and then either proceed to another menu, or exit the OSD menu, the monitor automatically saves the changes. The  
changes are also saved if you change the settings and then wait for the OSD menu to disappear.  
1. Press any key to launch the OSD menu and press  
to display the main menu.  
Main Menu for Analog (VGA) Input  
     
Or  
Main Menu for non Analog (non VGA) Input  
NOTE: Auto Adjust is only available when you are using the analog (VGA) connector.  
2. Press the  
and  
buttons to move between the setting options. As you move from one icon to another, the option name is highlighted. See the table  
for a complete list of all the options available for the monitor.  
3. Press the  
4. Press the  
5. Press the  
button once to activate the highlighted option.  
and  
buttons to select the desired parameter.  
button to enter the slide bar and then use the  
and  
buttons, according to the indicators on the menu, to make your changes.  
6. Press the  
button to return to the main menu or exit the OSD menu.  
Icon  
Menu and Submenus  
Brightness/Contrast  
Description  
Allows you to adjust the brightness and contrast.  
Brightness  
Brightness adjusts the luminance of the backlight.  
Press the button to increase the brightness and Press the  
button to decrease the brightness (mi  
Contrast Adjust the Brightness first, and then adjust the Contrast only if further adjustment is necessary.  
Press the button to increase contrast and press the button to decrease contrast (min 0 ~ max 10  
The Contrast function adjusts the degree of difference between the darkest and lightest areas on the m  
Back  
Press the  
button to go back to or exit the main menu.  
Auto Adjust  
Even though your computer recognizes your monitor on startup, the Auto Adjustment function optimizes  
NOTE: In most cases, Auto Adjust produces the best image for your configuration.  
Input Source  
The Input Source menu is to used to select between different video signals that may be connected to yo  
Auto Select  
Scan for Sources. Push  
to scan for available input signals.  
VGA  
Select VGA input when you are using the analog (VGA) connector. Push  
Select DVI-D input when you are using the Digital (DVI) connector. Push  
to select the VGA input source  
to select the DVI input sourc  
DVI-D  
Select HDMI input when you are using the HDMI connector. Push  
to select the HDMI input source.  
HDMI (for selective models)  
Back  
Push the  
button to go back to or exit the main menu.  
Color Settings  
Use the color settings to adjust the Image mode and color format.  
Input Color Format  
Mode Selection  
Allows you to set the color format.  
Allows you to set the display mode to Graphics or Video. If your computer is connected to your monitor, c  
Preset Modes  
VGA input  
Standard  
Mode suitable for desktop applications.  
Multimedia  
Mode for multimedia applications, e.g., video playback.  
Game  
Warm  
Mode suitable for gaming applications.  
Select warm mode to obtain a red tint. This color setting is typically used for color-intensive applications (  
Cool  
Select cool mode to obtain a bluish tint. This color setting is typically used for text based applications (sp  
Custom (RGB)  
Use the  
or  
buttons to increase or decrease each of the three colors (R, G, B) independently, in sin  
Video input  
Movie  
Game  
Sports  
Nature  
Hue  
Mode suitable for movie playback.  
Mode suitable for game applications.  
Mode suitable for sports scenes.  
Mode suitable for nature scenes.  
This feature can make the video image color shift from green to purple. Use this feature to adjust the ski  
increases the green hue in the image  
increases the purple hue in the image  
NOTE: Hue adjustment is only available for video input.  
Saturation  
Allows you to adjust the color saturation of the video image. Use  
makes video image looks monochrome  
or  
buttons to adjust the saturati  
makes video image looks colorful  
NOTE: Saturation adjustment is only available for video input.  
Demo Mode  
Vertically splits the screen into two segments. The left half of the screen in the normal mode and the righ  
NOTE: Demo Mode is only available for video input.  
Reset Color Settings  
Back  
Returns your monitor color settings to the factory default settings.  
Press the  
button to go back to or exit the main menu.  
Display Settings  
Wide Mode  
Adjusts the image ratio as 4:3 or full screen.  
NOTE: Wide Mode adjustment is not required at maximum preset resolution 1920 x 1080.  
Horizontal Position  
Vertical Position  
Use the  
and  
buttons to adjust image left and right. Minimum is '0' (-). Maximum is '100' (+).  
Use the  
and  
buttons to adjust image up and down. Minimum is '0' (-). Maximum is '100' (+).  
Sharpness  
Pixel Clock  
This feature can make the image look sharper or softer. Use  
or  
to adjust the sharpness from '0' to  
The Phase and Pixel Clock adjustments allow you to adjust your monitor to your preference. These settin  
Use the and buttons to adjust for best image quality.  
If satisfactory results are not obtained using the Phase adjustment, use the Pixel Clock (coarse) adjustm  
Phase  
Allows you to increase the level of contrast to provide sharper and more detailed image quality.  
Dynamic Contrast  
Resets the display settings to the factory default settings.  
Reset Display Setting  
Back Press the  
button to go back to or exit the main menu.  
Audio Settings  
Line Out Source  
Select the source of the audio  
Turns the Audio Power on or off during power save mode.  
Resets the audio settings to the original factory settings.  
Power Save Audio  
Reset Audio Settings  
Back  
Push  
to go back to or exit the main menu.  
Other Settings  
Language  
Language option to set the OSD display to one of 6 languages (English, Espanol, Francais, Deutsch, Simp  
Allows you to adjust the OSD background from opaque to transparent.  
Menu Transparency  
Menu Timer  
Menu Lock  
OSD Hold Time: Sets the amount of time the OSD will remain active after the last time you pressed a but  
Use the  
and  
buttons to adjust the slider in 5 second increments, from 5 to 60 seconds.  
Controls user access to adjustments. When selected, no user adjustments are allowed. All buttons are l  
NOTE: Lock function Either soft lock (through OSD menu) or hard lock (Press and hold the button abo  
Unlock functionOnly hard unlock (Press and hold the button above power button for 10 sec)  
DDC/CI  
DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters (brightness, color b  
Enable this feature for best user experience and optimum performance of your monitor.  
LCD Conditioning  
If an image appears to be retained on the monitor, select LCD Conditioning to help eliminate any image  
does not remove burn-in.  
Reset all OSD settings to the factory default settings.  
Factory Reset  
Back  
Press the  
button to go back to or exit the main menu.  
Personalize  
There are 2 shortcut keys on the front panel. Select one control menu for each shortcut key to allow dire  
OSD Warning Messages  
When the monitor does not support a particular resolution mode you will see the following message :  
or  
This means that the monitor cannot synchronize with the signal that it is receiving from the computer. See Monitor Specifications for the Horizontal and Vertical f  
monitor. The recommended mode is 1920x1080.  
When monitor enters Power Save mode, the following message appears :  
or  
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 message will appear:  
or  
 
If VGA/DVI/HDMI input is selected and both VGA, DVI and HDMI cable are not connected, a floating dialog box as shown  
below appears.  
or  
See Solving Problems for more  
information.  
Setting the Maximum Resolution  
To set the maximum resolution for the monitor.  
Windows XP:  
1. Right-click on the desktop and select Properties.  
2. Select the Settings tab.  
3. Set the screen resolution to 1920 x 1080.  
4. Click OK.  
®
®
Windows Vista or Windows 7:  
1. Right-click on the desktop and select Personalization.  
2. Click Change Display Settings.  
3. Move the slider-bar to the right by pressing and holding left-mouse button and adjust the screen resolution to 1920 x 1080.  
4. Click OK.  
If you do not see 1920 x 1080 as an option, you may need to update your graphics driver. Depending on your computer, complete one of the following  
procedures.  
If you have a Dell desktop or portable computer:  
¡
Go to support.dell.com, enter your service tag, and download the latest driver for your graphics card.  
If you are using a non-Dell computer (portable or desktop):  
¡
¡
Go to the support site for your computer and download the latest graphic drivers.  
Go to your graphics card website and download the latest graphic drivers.  
Using the Dell Soundbar (Optional)  
The Dell Soundbar is a stereo two channel system mountable on Dell flat panel displays. The Soundbar has a capacitive touch front control panel, a white LED  
for power indication, and two audio headset jacks.  
   
1. Attach mechanism  
2. Headphone connectors  
3. Power indicator  
4. Power/Volume control  
Using the Tilt  
Tilt  
With the built-in pedestal, you can tilt the monitor for the most comfortable viewing angle.  
NOTE: The stand riser and stand base are detached when the monitor is shipped from the factory.  
 
Setting Up Your Monitor  
Dell™ ST2220L/ST2220M monitor  
Important instructions to set the display resolution to 1920x1080 (Maximum)  
®
For optimal display performance while using the Microsoft Windows operating systems, set the display resolution to 1920 x 1080 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 1920x1080.  
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 1920x1080.  
4. Click OK.  
If you do not see 1920x1080 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 provided directions:  
 
Dell™ ST2220L/ST2220M monitor  
Information in this document is subject to change without notice.  
© 2010 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 registered trademarks or trademarks of Microsoft Corporation in  
the United States and/or other countries. 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.  
ST2220Lb/ST2220Mb/ST2220Lc/ST2220Mc  
June 2010  
Rev. A00  
 
Setting Up the Monitor  
Dell™ ST2220L/ST2220M monitor User's Guide  
Attaching the Base  
NOTE: The stand riser and stand base are detached when the monitor is shipped from the factory.  
1. Assemble the stand riser to stand base.  
a. Place the stand riser on top of the stand base. Slide the stand riser horizontally until the tabs are fully inserted into the stand base grooves.  
b. Tighten the thumbscrew below the stand base.  
2. Attach the stand assembly to the monitor.  
a. Place the monitor on a soft cloth or cushion near the edge of desk.  
b. Align the stand assembly bracket to the monitor groove.  
c. Insert the bracket towards monitor until it locked in place.  
   
Connecting the Monitor  
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions.  
To connect your monitor to the computer perform the following steps/instructions:  
1. Turn off your computer and disconnect the power cable.  
2. Connect the HDMI cable, white (digital DVI-D), or blue (analog VGA) display connector cable to the corresponding video port on the back of your  
computer. Do not use all the cables on the same computer. Use all of the cables only when they are connected to different computers with appropriate  
video systems.  
Connecting the blue VGA cable  
Connecting the White DVI Cable*  
Connecting the HDMI Cable* (for selective models)  
NOTE: *Optional purchase item. To purchase DVI or HDMI cable, please visit Dell.com  
NOTE: The Graphics are used for the purpose of illustration only. Appearance of the the computer may vary.  
After you have completed connecting the VGA/DVI/HDMI cable, follow the procedure below to complete your monitor setup:  
1. Plug the power cables for your computer and monitor into a nearby outlet.  
 
2. 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.  
Attaching the Soundbar (Optional)  
1. Working from the rear of the monitor, attach the Soundbar by aligning the two slots with the two tabs along the bottom rear 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 rear of the Soundbar into the computer's audio output jack or the monitor's audio output jack.  
NOTICE: Do not use with any device other than the Dell Soundbar.  
Removing the Monitor Stand  
After placing the monitor panel on a soft cloth or cushion, complete the following steps to remove the base.  
1. Use a long screwdriver to push the release latch located in a hole just above the stand.  
2. Once the latch is released, remove the base away from the monitor.  
   
Solving Problems  
Dell™ ST2220L/ST2220M 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 the Analog (blue connector) cable 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, the dialog shown below will continuously scroll through the screen.  
or  
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 have performed Step 5, check your video controller and computer system.  
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. On the front panel, press and hold the shortcut button 1 and shortcut button 4 keys on the front panel, simultaneously for 2 seconds. A gray screen  
appears.  
     
4. Carefully inspect the screen for abnormalities.  
5. Press the shortcut button 4 key 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, and white colored screens.  
The test is complete when the white screen appears. To exit, press the shortcut 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.  
OSD Warning Messages  
For OSD-related issues, see OSD Warning Messages.  
Common Problems  
The following table contains general information about common monitor problems that you might encounter and the possible solutions.  
Common Symptoms  
What You Experience  
No picture  
Possible Solutions  
No Video/Power LED off  
l
Ensure that the video cable connecting the monitor and the computer is properly con  
secure.  
l
l
Verify that the power outlet is functioning properly using any other electrical equipm  
Ensure that the power button is depressed fully.  
No Video/Power LED on  
No picture or no brightness  
l
l
l
l
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  
l
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 (16:9).  
Shaky/Jittery Video  
Wavy picture or fine movement  
l
l
l
l
l
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.  
Run the built-in diagnostics.  
Stuck-on Pixels  
Brightness Problems  
LCD screen has bright spots  
Picture too dim or too bright  
l
l
l
Cycle power on-off.  
Pixel that is permanently off is a natural defect that can occur in LCD technology.  
Run the built-in diagnostics.  
l
l
l
Reset the monitor to Factory Settings.  
Auto Adjust via OSD.  
Adjust brightness & contrast controls via OSD.  
Geometric Distortion  
Screen not centered correctly  
Screen has one or more lines  
l
l
l
Reset the monitor to Factory Settings.  
Auto Adjust via OSD.  
Adjust brightness & contrast controls via OSD.  
Horizontal/Vertical Lines  
l
l
Reset the monitor to Factory Settings.  
Perform Auto Adjust via OSD.  
 
l
l
l
l
Adjust Phase and Pixel Clock controls via OSD.  
Perform monitor self-test feature check and determine if these lines are also in self-t  
Check for bent or broken pins in the video cable connector.  
Run the built-in diagnostics.  
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 scrambled screen appears in  
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  
Monitor turns on & off  
l
l
Do not perform any troubleshooting steps.  
Contact Dell immediately.  
l
Ensure that the video cable connecting the monitor to the computer is connected pro  
secure.  
l
l
Reset the monitor to Factory Settings.  
Perform monitor self-test feature check to determine if the intermittent problem occu  
mode.  
Missing Color  
Wrong Color  
Picture lacks color  
l
l
Perform monitor self-test feature check.  
Ensure that the video cable connecting the monitor to the computer is connected pro  
secure.  
l
Check for bent or broken pins in the video cable connector.  
Picture color is not good  
l
l
l
Change the Color Setting Mode in the Color Settings OSD to Graphics or Video depe  
application.  
Try a different Color Preset Setting in Color Settings OSD. Adjust R/G/B value in Colo  
OSD if the Color Management is turned off.  
Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.  
Image retention from a static  
image left on the monitor for a  
long period of time  
Faint shadow from the static image  
displayed appears on the screen  
l
l
Use the Power Management feature to turn off the monitor at all times when not in  
information, see Power Management Modes).  
Alternatively, use a dynamically changing screensaver.  
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
Perform monitor reset on "Factory Reset"  
Cannot adjust the monitor with  
the buttons on the front panel  
OSD does not appear on the  
screen  
l
Turn the monitor off and unplug the power cord and then plug back and power on  
No Input Signal when user  
controls pressed  
No picture, the LED light is  
amber. When control button is  
pressed, the message " No VGA  
cable", "No DVI-D cable"or "No  
HDMI cable" will appear.  
l
l
l
Check the signal source. Ensure that the computer is not in power saving by movin  
or pressing any key on the keyboard.  
Check whether the signal cable is plugged in and seated properly. Re-plug the sign  
necessary.  
Re-boot the computer or video player.  
The monitor will not fill the entire The picture does not fill the  
screen. height or width of the screen.  
l
Due to the non-standard formats of DVDs, the monitor may not show the full screen  
Troubleshooting the Dell™ Soundbar (Optional)  
COMMON SYMPTOMS  
No Sound  
WHAT YOU EXPERIENCE  
POSSIBLE SOLUTIONS  
Soundbar has power - power  
indicator is on.  
l
l
l
l
l
l
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 volume up.  
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.  
l
l
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  
Set all Windows volume controls to their midpoints.  
Decrease the volume of the audio application.  
   
l
l
l
l
Turn the volume down.  
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.  
l
l
l
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 audio s  
Decrease the volume of the audio source.  
Turn the volume down.  
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  
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  
l
l
l
l
l
Clear any obstructions between the Soundbar and the user.  
Turn the volume up to its maximum level.  
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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