The External Monitor Remains Blank; The External Monitor Is Blank Or The Image Is Unstable - Fujitsu LIFEBOOK U728 Operating Manual

Troubleshooting and tips

The external monitor remains blank

Monitor
Cause
Monitor is switched off.
Power saving has been activated (monitor is
blank).
Brightness is set to dark.
Screen output is set to the notebook's LCD
screen
The external monitor's AC cable or data cable is
not connected properly.

The external monitor is blank or the image is unstable

Monitor Monitor
Cause
The wrong external monitor has been selected
or the wrong screen resolution has been set for
the application program.
88
Troubleshooting
► Switch the external monitor on.
► Press any key to continue.
► Adjust the brightness of the monitor.
► Press the key for changing over the screen
output, see "Hot keys", Page
► Switch off the external monitor and the
notebook.
► Check whether the AC cable is plugged
properly into the external monitor and into
the power outlet.
► Check whether the data cable is properly
connected to the notebook and the external
monitor (if it is plugged in with a connector).
► Switch on the external monitor and the
notebook.
Troubleshooting
► Terminate the application program under
Windows by pressing
error persists after terminating the program,
use the key for switching the screen output
(see "Hot keys", Page
to the LCD screen of the notebook.
Change the following setting:
► Set the screen resolution: Set the screen
resolution as described in the documentation
for your operating system.
► Select monitor: Select monitor 1 or 2 as
described in the documentation for your
operating system.
34.
Alt + F4 . If the
34), in order to switch
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