Fujitsu E8420 manual Problem Possible Cause Possible Solutions

Problem	Possible Cause	Possible Solutions
The built-in display is blank	The notebook is set for	Pressing [F10] while holding down the [Fn] key allows you to
when you turn on your Life-	an external monitor only.	change your selection of where to send your display video. Each
Book notebook.		time you press the keys you will step to the next choice. The
(continued)		choices, in order are: built-in display only, external monitor only,
		both built-in display and external monitor.
	The power manage-	Press a keyboard button or move the mouse to restore operation. If
	ment timeouts may be	that fails, push the Power/Suspend/Resume button. (The display
	set for very short inter-	may be shut off by Sleep mode, Auto Suspend or Video Timeout)
	vals and you failed to
	notice the display come
	on and go off again.
The notebook turned on	POST has detected a	Contact your support representative.
with a series of beeps and	failure which does not
the built-in display is blank.	allow the display to oper-
	ate.
The display goes blank by	The notebook has gone	Press any button on the keyboard, or move the mouse to restore
itself after you have been	into Video timeout,	operation. If that fails, push the Power/Suspend/Resume button.
using it.	Sleep mode, or Hiber-	Check your power management settings in the Power Options con-
	nate mode because you	trol panel.
	have not used it for a
	period of time.
	The power manage-	Press any button on the keyboard, or move the mouse to restore
	ment timeouts may be	operation. If that fails, push the Power/Suspend/Resume button.
	set for very short inter-	(The display may be shut off by Sleep Mode, Auto Suspend or
	vals and you failed to	Video Timeout)
	notice the display come
	on and go off again.
Your display won’t turn on	The system may be	Check the status indicator panel to verify that the Security icon is
when the system is turned	password-protected.	blinking. If it is blinking, enter your password.
on or when it has resumed.

106 - Troubleshooting Your LifeBook