Product Specific Problems - Dell Thunderbolt UltraSharp 34 User Manual

Product specific problems

Specific
symptoms
Screen image is too
small
Cannot adjust the
monitor with the
joystick
No input signal
when user controls
are pressed
The picture does
not fill the entire
screen
No video at HDMI/
DisplayPort/
Thunderbolt port
What you
experience
Image is centered on
screen, but does not
fill the entire viewing
area
OSD does not
appear on the screen
No picture, the LED
light is white
The picture cannot
fill the height or
width of the screen
When connected to
some dongle/
docking device at
the port, there is no
video when
unplugging/plugging
the cable from the
notebook
Possible solutions
• Check the Aspect Ratio setting in
the Display menu OSD.
• Reset the monitor to factory settings.
• Turn off the monitor, unplug the
power cord, plug it back, and then
turn on the monitor.
• Check whether the OSD menu is
locked. If yes, move and hold the
joystick up/down/left/right for 4
seconds to unlock (see
Locking the control
• Check the signal source. Ensure the
computer is not in the power saving
mode by moving the mouse or
pressing any key on the keyboard.
• Check whether the signal cable is
plugged in properly. Re-plug the
signal cable if necessary.
• Reset the computer or video player.
• Due to different video formats
(aspect ratio) of DVDs, the monitor
may display in full screen.
• Run the built-in diagnostics. For more
information, see
Unplug the HDMI/DisplayPort/
Thunderbolt cable from dongle/docking
device, then plug the docking HDMI/
DisplayPort/Thunderbolt cable into the
notebook.
Troubleshooting
Lock and
buttons).
Built-in diagnostics.
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