Dell E248WFP Monitor - Manual (Page 29)

Product Specific Problems
Common Symptoms What You
Experience
Possible Solutions
No Video/ Power LED off No picture l Ensure that the video cable connecting the monitor and the computer is properly connected and secure.
l Verify that the power outlet is functioning properly using any other electrical equipment.
l Ensure that the power button depressed fully.
No Video/ Power LED on No picture or no
brightness
l Increase brightness & contrast controls via OSD.
l Perform monitor self-test feature check.
l Check for bent or broken pins in the video cable connector.
Poor Focus Picture is fuzzy,
blurry, or ghosting l Perform Auto Adjust via OSD.
l Adjust the Phase and Pixel Clock controls via OSD.
l Eliminate video extension cables.
l Reset the monitor to Factory Settings.
l Change the video resolution to the correct aspect ration (16:10).
Shaky/Jittery Video Wavy picture or
fine movement l Perform Auto Adjust via OSD.
l Adjust the Phase and Pixel Clock controls via OSD.
l Reset the monitor to Factory Settings.
l Check environmental factors.
l Relocate the monitor and test in another room.
Missing Pixels LCD screen has
spots l Cycle power on-off.
l Pixel that is permanently off is a natural defect that can occur in LCD technology.
Stuck-on Pixels LCD screen has
bright spots l Cycle power on-off.
l Pixel that is permanently off is a natural defect that can occur in LCD technology.
Brightness Problems Picture too dim or
too bright l Reset the monitor to Factory Settings.
l Auto Adjust via OSD.
l Adjust brightness & contrast controls via OSD.
Geometric Distortion Screen not
centered correctly l Reset the monitor to Factory Settings.
l Auto Adjust via OSD.
l Adjust brightness & contrast controls via OSD.
NOTE: When using 'DVI-D', the positioning adjustments are not available.
Horizontal/Vertical Lines Screen has one or
more lines l Reset the monitor to Factory Settings.
l Perform Auto Adjust via OSD.
l Adjust Phase and Pixel Clock controls via OSD.
l Perform monitor self-test feature check and determine if these lines are also in self-test mode.
l Check for bent or broken pins in the video cable connector.
NOTE: When using 'DVI-D', the Pixel Clock and Phase adjustments are not available.
Synchronization Problems Screen is
scrambled or
appears torn
l Reset the monitor to Factory Settings.
l Perform Auto Adjust via OSD.
l Adjust Phase and Pixel Clock controls via OSD.
l Perform monitor self-test feature check to determine if scrambled screen appears in self-test mode.
l Check for bent or broken pins in the video cable connector.
l Restart the computer in the safe mode.
Safety Related Issues Visible signs of
smoke or sparks l Do not perform any troubleshooting steps.
l Contact Dell immediately.
Intermittent Problems Monitor
malfunctions on &
off l Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.
l Reset the monitor to Factory Settings.
l Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode.
Missing Color Picture missing
color l Perform monitor self-test feature check.
l 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..
Wrong Color Picture color not
good l Change the Color Setting Mode in the Color Settings OSD to Graphics or Video depending to the
application.
l 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 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 Use the Power Management feature to turn off the monitor at all times when not in use (for more
information, see
Power Management Modes ).
l Alternatively, use a dynamically changing screensaver.
Input auto switching to
another source Can't select input
source l Under "Auto Detect" mode if one of the DVI or VGA signal is lost(or cable disconnected) the display will
automatically switch to the other input source where a signal exist.
SPECIFIC SYMPTOMS WHAT YOU EXPERIENCE POSSIBLE SOLUTIONS
Screen image is too small Image is centered on screen, but does not fill entire l Reset the monitor to factory settings using