Dell Computer Monitor St2320L Users Manual User Guide Operating Instructions

ST2320L to the manual b504ef25-37cd-4b9c-a823-009acdd894e2

2015-02-09

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Dell™ ST2320L/ST2321L monitor User's Guide
About Your Monitor
Setting Up the Monitor
Operating the Monitor
Solving Problems
Appendix

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 a n d 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.

ST2320Lf/ST2321Lf
June 2010 Rev. A00

Back to Contents Page

About Your Monitor
Dell™ ST2320L/ST2321L monitor User's Guide
Package Contents
Product Features
Identifying Parts and Controls
Monitor Specifications
Plug and Play Capability
LCD Monitor Quality & Pixel Policy
Maintenance Guidelines

Package Contents
Your monitor ships with the components shown below. Ensure that you have received all the components and contact Dell if something is missing.
NOTE: Some items may be optional and may not ship with your Monitor. Some features or media may not be available in certain countries.

Monitor with Stand

Power Cable

DVI Cable (optional)

VGA Cable

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Product Information Guide
Drivers and Documentation media
Quick Setup Guide

Product Features
The ST2320L/ST2321L flat panel display has an active matrix, Thin-Film Transistor (TFT), and Liquid Crystal Display (LCD). The monitor's features include:
■ ST2320L/ST2321L: 58.42 cm (23 inches) 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 Star compliant.
■ 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 Shortcut key: Preset Modes (Default)

3
4

2 Shortcut key: Brightness/Contrast (Default)
OSD menu select
EXIT

Power On/Off (light indicator below Dell logo)

Back View

Label
Barcode serial number label

To contact Dell for technical support.

Security lock slot

To help secure your monitor.

Dell Soundbar mounting brackets

To attach the optional Dell Soundbar.

Regulatory rating label

Lists the regulatory approvals.

Stand release button

To release stand assembly from monitor.

Side View

Left Side

Bottom View

Description/Use

Bottom view
Label

Description
AC power cord connector

DVI connector

HDMI connector

VGA connector

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:
ST2320L/ST2321L
VESA Modes

Horizontal
Sync

Vertical Sync

Video

Power
Indicator

Power Consumption

Normal operation

Active

White

30 W (maximum)

Active-off mode

Inactive

Blanked

Amber

Less than 1 W

Off

Less than 0.5 W

24 W (typical)

Switch 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

Video-Red

Video-Green

Video-Blue

GND

Self-test

GND-R

GND-G

GND-B

Computer 5 V/3.3 V

GND-sync

GND

DDC data

H-sync

V-sync

DDC clock

DVI Connector

Pin
Number

24-pin Side of the Connected Signal
Cable

TMDS RX2-

TMDS RX2+

TMDS Ground

Floating

DDC Clock

DDC Data

Floating

TMDS RX1-

TMDS RX1+

TMDS Ground

Floating

+5 V power

Self test

Hot Plug Detect

TMDS RX0-

TMDS RX0+

TMDS Ground

Floating

TMDS Ground

TMDS Clock+

TMDS Clock-

HDMI Connector (for selective models)
Pin Number

19-pin Side of the Connected Signal Cable

TMDS DATA 2+

TMDS DATA 2 SHIELD

TMDS DATA 2-

TMDS DATA 1+

TMDS DATA 1 SHIELD

TMDS DATA 1-

TMDS DATA 0+

TMDS DATA 0 SHIELD

TMDS DATA 0-

TMDS CLOCK

TMDS CLOCK SHIELD

TMDS CLOCK-

CEC

Reserved (N.C. on device)

DDC CLOCK (SCL)

DDC DATA (SDA)

DDC/CEC Ground

+5 V POWER

HOT PLUG DETECT

Flat Panel Specifications
Model

ST2320L

ST2321L

Screen type

Active matrix - TFT LCD

Panel type

Screen dimensions

58.42 cm (23 inches) (23-inch viewable image
size)

Preset display area: Horizontal

509.184 mm (20.05 inches)

Vertical

286.416 mm (11.28 inches)

Pixel pitch

0,265 mm

Viewing angle

160 ° (vertical) typical, 170 ° (horizontal) typical

Luminance output

250 cd/m² (typical)

Contrast Ratio

1,000 to 1 (typical)

Dynamic Contrast Ratio

8,000,000 to 1 *

7,000,000 to 1 *

Faceplate coating

Antiglare with hard-coating 3H

Backlight

LED light bar system

Response Time

5 ms typical

Color Depth

16.7 mil colors

Color Gamut

81 % **

* Based on estimation
** ST2320L/ST2321L Color Gamut (Typical) is based on CIE1976 (81 %) and CIE1931 (68 %).

Resolution
Model

ST2320L/ST2321L

Horizontal scan range

30 kHz to 83 kHz (automatic)

Vertical scan range

56 Hz to 76 Hz (automatic)

Maximum preset resolution

1920 x 1080 at 60 Hz

Video Supported Modes
Model

ST2320L/ST2321L

Video display capabilities (HDMI playback)

480i/480p/576i/576p/720p/1080i/1080p

Preset Display Modes
ST2320L/ST2321L
Display Mode

Horizontal Frequency
(kHz)

Vertical Frequency
(Hz)

Pixel Clock
(MHz)

Sync Polarity (Horizontal/Vertical)

VGA, 720 x 400

31.469

70.087

28.3

-/+

VGA, 640 x 480

31.469

59.940

25.2

-/-

VGA, 640 x 480

37.500

75.000

31.5

-/-

VESA, 800 x 600

37.879

60.317

40.0

+/+

VESA, 800 x 600

46.875

75.000

49.5

+/+

VESA, 1024 x 768

48.363

60.004

65.0

-/-

VESA, 1024 x 768

60.023

75.029

78.8

+/+

VESA. 1152 x 864

67.500

75.000

108.0

+/+

VESA, 1280 x 1024

64.000

60.000

108.0

+/+

VESA, 1280 x 1024

79.976

75.025

135.0

+/+

VESA, 1920 x 1080

67.500

60.000

148.5

+/+

Electrical
Model

ST2320L/ST2321L
Analog RGB, 0.7 Volts +/- 5 %, positive polarity at 75 ohm input impedance
Digital DVI-D TMDS, 600 mV for each differential line, positive polarity at 50 ohm input
impedance
HDMI, 600 mV for each differential line, 100 ohm input impedance per differential pair

Video input signals

Synchronization input signals

Separate horizontal and vertical synchronizations, polarity-free TTL level, SOG
(Composite SYNC on green)

AC input voltage/frequency/current

100 VAC to 240 VAC/50 Hz or 60 Hz + 3 Hz/2.0 A (Max.)

Inrush iso surge current

120 V: 30 A (Max.)
240 V: 60 A (Max.)

Physical Characteristics
Model

ST2320L/ST2321L
l

Connector type

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Signal cable type

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D-sub: Blue connector
DVI-D: White connector
HDMI (for selective models)

D-sub: Detachable, Analog, 15 pin, shipped attached to the monitor
DVI-D
HDMI (for selective models)

Dimensions (with stand)
Height

404.07 mm (15.91 inches)

Width

553.38 mm (21.79 inches)

Depth

203.68 mm (8.02 inches)

Dimensions (without stand)
Height

344.2 mm (13.55 inches)

Width

553.38 mm (21.79 inches)

Depth

59.5 mm (2.34 inches)

Stand dimensions
Height

203.68 mm (8.02 inches)

Width

149.85 mm ( 5.90 inches)

Depth

203.68 mm (8.02 inches)

Weight
Weight with packaging

5.751 kg (12.65 lb)

Weight with stand assembly and
cables

4.417 kg (9.72 lb)

Weight of stand assembly

0.685 kg (1.51 lb)

Environmental
Model

ST2320L/ST2321L

Temperature
Operating

0 ° C to 40 ° C (32 ° F to 104 ° F)

Non-operating

Storage: -20 ° C to 60 ° C (-4 ° F to 140 ° F)
Shipping: -20 ° C to 60 ° C (-4 ° F to 140 ° F)

Humidity
Operating

10 % to 80 % (non-condensing)

Non-operating

Storage: 5 % to 90 % (non-condensing)
Shipping: 5 % to 90 % (non-condensing)

Altitude
Operating

4,485 m (14,700 ft) max

Non-operating

12,191 m (40,000 ft) max

Thermal dissipation

102.6 BTU/hour (maximum)
82.08 BTU/hour (typical)

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.
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.

Back to Contents Page

Appendix
Dell™ ST2320L/ST2321L monitor User's Guide
Safety Instructions
FCC Notice (U.S. Only) and Other Regulatory Information
Contacting Dell

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.
2.
3.
4.
5.

Visit support.dell.com.
Verify your country or region in the Choose A Country/Region drop-down menu at the bottom of the page.
Click Contact Us on the left side of the page.
Select the appropriate service or support link based on your need.
Choose the method of contacting Dell that is convenient for you.

Back to Contents Page

Setting Up Your Monitor
Dell™ ST2320L/ST2321L 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.

Back to Contents Page

Setting Up Your Monitor
Dell™ ST2320L/ST2321L 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 .

Back to Contents Page

Operating the Monitor
Dell™ ST2320L/ST2321L monitor User's Guide
Using the Front Panel Controls
Using the On-Screen Display (OSD) Menu
Setting the Maximum Resolution
Using the Dell Soundbar (Optional)
Using the Tilt

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

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.

1
Use this button for different display preset modes on your monitor.
Preset Modes Select
2
Use this button to access the "Brightness/Contrast" control menu.
Brightness/Contrast
3
Use this button to open the On-Screen Display (OSD). See Using the OSD Menu.
OSD Menu
4
Use this button to exit the OSD menu.
Exit
5

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

Main Menu for Analog (VGA) Input

to display the main menu.

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

button once to activate the highlighted option.

4. Press the

and

5. Press the

6. Press the
Icon

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.

button to return to the main menu or exit the OSD menu.
Menu and Submenus

Description

Brightness/Contrast

Allows you to adjust the brightness and contrast.

Brightness

Brightness adjusts the luminance of the backlight.
Press the

Contrast

button to increase the brightness and Press the

button to decrease the brightness (min 0 ~ max 100).

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 100).
The Contrast function adjusts the degree of difference between the darkest and lightest areas on the monitor screen.

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 the display settings for u

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 your monitor.

Auto Select

Scan for Sources. Push

to scan for available input signals.

VGA

DVI-D

HDMI (for selective models)

Back

Select VGA input when you are using the analog (VGA) connector. Push

to select the VGA input source.

Select DVI-D input when you are using the Digital (DVI) connector. Push

to select the DVI input source.

Select HDMI input when you are using the HDMI connector. Push

Push the

to select the HDMI input source.

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, choose Graphics. If a DVD

Preset Modes

VGA input

Standard

Multimedia

Game

Warm

Mode suitable for desktop applications.

Mode for multimedia applications, e.g., video playback.

Mode suitable for gaming applications.

Select warm mode to obtain a red tint. This color setting is typically used for color-intensive applications (photograph image editing

Cool

Select cool mode to obtain a bluish tint. This color setting is typically used for text based applications (spreadsheets, programming

Custom (RGB)
Use the

Video input

buttons to increase or decrease each of the three colors (R, G, B) independently, in single

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 skin tone. Use
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

buttons to adjust the saturation from '0' to '100'

makes video image looks monochrome
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 right half of the screen is dis

NOTE: Demo Mode is only available for video input.

Reset Color Settings

Back

Display Settings

Returns your monitor color settings to the factory default settings.

Press the

button to go back to or exit the main menu.

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

Use the

and

buttons to adjust image left and right. Minimum is '0' (-). Maximum is '100' (+).

Vertical Position

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

Dynamic Contrast

Reset Display Setting

Back
Audio Settings

to adjust the sharpness from '0' to '100' .

The Phase and Pixel Clock adjustments allow you to adjust your monitor to your preference. These settings are accessed through
Use the

Phase

and

buttons to adjust for best image quality.

If satisfactory results are not obtained using the Phase adjustment, use the Pixel Clock (coarse) adjustment and then use Phase

Allows you to increase the level of contrast to provide sharper and more detailed image quality.

Resets the display settings to the factory default settings.

Press the

button to go back to or exit the main menu.

Line Out Source

Power Save Audio

Reset Audio Settings

Back

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.

Push

to go back to or exit the main menu.

Other Settings

Language

Menu Transparency

Menu Timer

Language option to set the OSD display to one of 6 languages (English, Espanol, Francais, Deutsch, Simplified Chinese, Japanese

Allows you to adjust the OSD background from opaque to transparent.

OSD Hold Time: Sets the amount of time the OSD will remain active after the last time you pressed a button.
Use the

and

buttons to adjust the slider in 5 second increments, from 5 to 60 seconds.

Menu Lock
Controls user access to adjustments. When selected, no user adjustments are allowed. All buttons are locked except the

NOTE: Lock function – Either soft lock (through OSD menu) or hard lock (Press and hold the button above power button for 10 se
Unlock function– Only 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 balance, etc.) to be adjus
Enable this feature for best user experience and optimum performance of your monitor.

LCD Conditioning

Factory Reset

Back

If an image appears to be retained on the monitor, select LCD Conditioning to help eliminate any image retention. Using the LCD
does not remove burn-in.

Reset all OSD settings to the factory default settings.

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 direct access.

OSD Warning Messages
When the monitor does not support a particular resolution mode you will see the following message :

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 frequency ranges address
monitor. The recommended mode is 1920x1080.
When monitor enters Power Save mode, the following message appears :

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:

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. The monitor will enter Power Save Mode after 15

See Solving Problems for more information.

Setting the Maximum Resolution
To set the maximum resolution for the monitor.
Windows XP:
1.
2.
3.
4.

Right-click on the desktop and select Properties.
Select the Settings tab.
Set the screen resolution to 1920 x 1080.
Click OK.

Windows Vista® or Windows® 7:
1.
2.
3.
4.

Right-click on the desktop and select Personalization.
Click Change Display Settings.
Move the slider-bar to the right by pressing and holding left-mouse button and adjust the screen resolution to 1920 x 1080.
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.

Attach mechanism

Headphone connectors

Power indicator

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.

Back to Contents Page

Setting Up Your Monitor
Dell™ ST2320L/ST2321L 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:
1: If you have a Dell™ desktop or a Dell™ portable computer with internet access.
2: If you have a non Dell™ desktop, portable computer, or graphics card.

Back to Contents Page

Dell™ ST2320L/ST2321L monitor

User Guide
Important instructions to set the display resolution to 1920x1080 (Maximum)

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.
ST2320Lf/ST2321Lf
June 2010 Rev. A00

Back to Contents Page

Setting Up the Monitor
Dell™ ST2320L/ST2321L monitor User's Guide
Attaching the Base
Connecting the Monitor
Attaching the Soundbar (Optional)
Removing the Monitor Stand

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.

Tighten the thumbscrew below the stand base.

Attach the stand assembly to the monitor.
a. Place the monitor on a soft cloth or cushion near the edge of desk.

b.
c.

Align the stand assembly bracket to the monitor groove.
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.
2.

Turn off your computer and disconnect the power cable.
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.
2.

Plug the power cables for your computer and monitor into a nearby outlet.
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.
2.

Use a long screwdriver to push the release latch located in a hole just above the stand.
Once the latch is released, remove the base away from the monitor.

Back to Contents Page

Solving Problems
Dell™ ST2320L/ST2321L monitor User's Guide
Self-Test
Built-in Diagnostics
Common Problems
Product-Specific Problems
Troubleshooting the Dell™ Soundbar (Optional)
CAUTION: 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.
2.
3.

Turn off both your computer and the monitor.
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.
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.

4.
5.

This box also appears during normal system operation, if the video cable becomes disconnected or damaged. The monitor will enter Power Save Mode
after 15 minutes if left at this state.
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.
2.
3.

Ensure that the screen is clean (no dust particles on the surface of the screen).
Unplug the video cable(s) from the back of the computer or monitor. The monitor then goes into the self-test mode.
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.
5.
6.
7.

Carefully inspect the screen for abnormalities.
Press the shortcut button 4 key on the front panel again. The color of the screen changes to red.
Inspect the display for any abnormalities.
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
No Video/Power LED off

What You Experience
No picture

l
l
l

No Video/Power LED on

No picture or no brightness

l
l
l
l

Poor Focus

Picture is fuzzy, blurry, or ghosting

l
l
l
l
l

Shaky/Jittery Video

Wavy picture or fine movement

l
l
l
l
l

Missing Pixels

LCD screen has spots

l
l
l

Stuck-on Pixels

LCD screen has bright spots

l
l
l

Brightness Problems

Picture too dim or too bright

l
l
l

Geometric Distortion

Screen not centered correctly

l
l
l

Horizontal/Vertical Lines

Screen has one or more lines

l
l

Possible Solutions
Ensure that the video cable connecting the monitor and the computer is properly connected and
secure.
Verify that the power outlet is functioning properly using any other electrical equipment.
Ensure that the power button is depressed fully.

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.

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).

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.

Cycle power on-off.
Pixel that is permanently off is a natural defect that can occur in LCD technology.
Run the built-in diagnostics.

Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Adjust brightness & contrast controls via OSD.

Reset the monitor to Factory Settings.
Auto Adjust via OSD.
Adjust brightness & contrast controls via OSD.
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.
Check for bent or broken pins in the video cable connector.
Run the built-in diagnostics.

l
l
l
l

Synchronization Problems

Screen is scrambled or appears
torn

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 self
mode.
Check for bent or broken pins in the video cable connector.
Restart the computer in the safe mode.

l
l
l
l
l
l

Safety Related Issues

Visible signs of smoke or sparks

Do not perform any troubleshooting steps.
Contact Dell immediately.

l
l

Intermittent Problems

Monitor turns on & off

Ensure that the video cable connecting the monitor to the computer is connected properly and is
secure.
Reset the monitor to Factory Settings.
Perform monitor self-test feature check to determine if the intermittent problem occurs in self
mode.

l
l
l

Missing Color

Picture lacks color

Perform monitor self-test feature check.
Ensure that the video cable connecting the monitor to the computer is connected properly and is
secure.
Check for bent or broken pins in the video cable connector.

l
l
l

Wrong Color

Picture color is not good

Change the Color Setting Mode in the Color Settings OSD to Graphics or Video depending to the
application.
Try a different Color Preset Setting in Color Settings OSD. Adjust R/G/B value in Color Settings
OSD if the Color Management is turned off.
Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.

l
l
l

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

Use the Power Management feature to turn off the monitor at all times when not in use
information, see Power Management Modes).
Alternatively, use a dynamically changing screensaver.

l
l

Product-Specific Problems
SPECIFIC SYMPTOMS

WHAT YOU EXPERIENCE

Screen image is too small

Image is centered on screen, but
does not fill entire viewing area

Perform monitor reset on "Factory Reset"

Cannot adjust the monitor with
the buttons on the front panel

OSD does not appear on the
screen

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.

Check the signal source. Ensure that the computer is not in power saving by moving the mouse
or pressing any key on the keyboard.
Check whether the signal cable is plugged in and seated properly. Re-plug the signal cable if
necessary.
Re-boot the computer or video player.

The picture does not fill the
height or width of the screen.

Due to the non-standard formats of DVDs, the monitor may not show the full screen pictures.

The monitor will not fill the entire
screen.

POSSIBLE SOLUTIONS

Troubleshooting the Dell™ Soundbar (Optional)
COMMON SYMPTOMS
No Sound

WHAT YOU EXPERIENCE
Soundbar has power - power
indicator is on.

POSSIBLE SOLUTIONS
l
l
l
l
l
l

Distorted Sound

Computer's sound card is used
as the audio source.

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).

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.

l
l
l
l

Distorted Sound

Other audio source is used.

l
l
l
l
l

Unbalanced Sound Output

Sound from only one side of
Soundbar

l
l
l
l
l
l

Low Volume

Volume is too low

l
l
l
l
l

Back to Contents Page

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).

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.
Decrease the volume of the audio source.
Turn the volume down.
Clean and reseat the audio line-in plug.

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.
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).

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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