Dell S2240T User Manual

Troubleshooting | 47
Touch Problem
Safety Related
Issues
Visible signs of
smoke or sparks
• Do not perform any troubleshooting steps.
• Contact Dell immediately.
Intermittent
Problems
Monitor
malfunctions 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-test mode.
Missing Color Picture missing
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.
Wrong Color Picture color not
good
• 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.
• 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
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 (for more information, see
Power Management Modes ).
• Alternatively, use a dynamically changing screensaver.
Specific
Symptoms
What You
Experience
Possible Solutions
Touch report
error
Touch function
miss alignment or
no touch
function
• Make sure power cord comes with ground pin.
• Unplug and replug the DC cable from power adapter to
allow touch module auto recalibration.
• Make sure to use Dell provide USB cable, connect with
computer.
• Make sure computer support USB 2.0 cable.
• If the device cannot be detected by system, power off/on
the monitor or plug out/in the USB cable.
Touch screen
no response in
saving mode
Could not wake
up monitor and
computer by
touching in
saving mode
• Access to Device Manager and choose HID Interface Device
under Human Device.
• Select HID- compliant device Properties
• Allow the device to wake the computer.

Dell S2240T Specifications

General

Color gamut	84 %
Pixel pitch	0.248 x 0.248 mm
Aspect ratio	16:9
Screen shape	Flat
LED backlight	Yes
Response time	12 ms
Display diagonal	21.5 \
Touch technology	Multi-touch
Touchscreen type	Tabletop
Display brightness	250 cd/m²
Display technology	LED
Supported video modes	1080p
Touchscreen technology	Capacitive
Viewable size diagonal	546 mm
Contrast ratio (dynamic)	8000000:1
Contrast ratio (typical)	3000:1
Display number of colors	16.78 million colors
Display diagonal (metric)	54.6 cm
Supported graphics resolutions	1920 x 1080 (HD 1080)
Number of simultaneous touchpoints	10
Product color	Black, Silver
Glass thickness	1.1 mm
Placement supported	Horizontal
Display viewable area (HxV)	476.64 x 268.11 mm
Dimensions (W x D x H) with stand	522.5 x 77.4 x 382.9 mm
Cables included	AC, HDMI, USB
Tilt angle range	0 - 60 °
Panel mounting interface	100 x 100 mm
AC input voltage	100 - 240 V
Power supply type	DC
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	20 W
Package weight	6900 g
NVIDIA G-SYNC	No
Sustainability certificates	ENERGY STAR

Weight and Dimensions

Depth (with stand)	77.4 mm
Width (with stand)	522.5 mm
Height (with stand)	382.9 mm
Weight (without stand)	3400 g