Dell S2240T User Manual

46 | Troubleshooting
Poor Focus Picture is fuzzy,
blurry, or
ghosting
• 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
• 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
• 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
• 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
Picture too dim
or too bright
• Reset the monitor to Factory Settings.
• Auto Adjust via OSD.
• Adjust brightness & contrast controls via OSD.
Geometric
Distortion
Screen not
centered
correctly
• Reset the monitor to Factory Settings.
• Auto Adjust via OSD.
• Adjust horizontal & vertical controls via OSD.
NOTE: When using DVI-D/HDMI input, the positioning
adjustments are not available.
Horizontal/
Vertical Lines
Screen has one
or more lines
• 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.
NOTE: When using DVI-D/HDMI input, the Pixel Clock and
Phase adjustments are not available.
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 the
scrambled screen appears in self-test mode.
• Check for bent or broken pins in the video cable connector.
• Restart the computer in the safe mode.

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