The External Monitor Remains Blank; The External Monitor Is Blank Or The Image Is Unstable - Fujitsu LIFEBOOK U749 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 power cable or data
cable is not connected properly.

The external monitor is blank or the image is unstable

Screen Monitor
Cause
The wrong external monitor has been selected
or the wrong screen resolution has been set for
the application program.
84
Troubleshooting
► Switch the external monitor on.
► Press any key to continue.
► Adjust the brightness of the monitor.
► Press the key combination to switch the
screen output, see
combinations", Page
► Switch off the external monitor and the
notebook.
► Check whether the power cable is plugged
properly into the external monitor and into
the power socket.
► 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 in
Windows by pressing
fault persists after closing the program,
use the key combination for switching the
screen output (see
combinations", Page
the notebook's LCD screen.
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.
"Function keys and key
32.
Alt + F4 . If the
"Function keys and key
32) to switch over to
Fujitsu