Fujitsu N6420 manual Test Messages page 63 for more information, Video Problems, for location

		T r o u b l e s h o o t i n g
Problem	Possible Cause	Possible Solutions
An error message is	Power On Self Test (POST) has	See the POST messages to determine the meaning
displayed on the screen	detected a problem.	and severity of the problem. Not all messages are
during the notebook		errors; some are status indicators. (See Power On Self
(boot) sequence.		Test Messages page 63 for more information)
Your notebook appears to	BIOS setup changes were not	Make sure you select Save Changes And Exit when
change setup parameters	saved when you exited the	exiting the BIOS setup utility.
when you start it.	BIOS setup utility, returning it
	to previous settings.
	The BIOS CMOS hold-up	Contact your support representative for repairs.
	battery has failed.	This is not a user serviceable part but has a normal
		life of 3 to 5 years.
Video Problems
The display is blank when	Something is pushing on the	Clear the Closed Cover switch. (See Figure on page 8
you turn on your notebook.	Closed Cover switch.	for location)
	The display angle and bright-	Press the [Fn] + [F7] keys repeatedly until you have
	ness settings are not adequate	the desired brightness.
	for your lighting conditions.
	The LifeBook notebook is set	Pressing [F10] while holding down the [Fn] key
	for an external video device	allows you to change your selection of where to
	only.	send your display video. Each time you press the
		combination of keys you will step to the next choice.
		The choices, in order are: built-in display only,
		external monitor only, both built-in display and
		external monitor.
	The power management time-	Press any button or key on the keyboard, or move
	outs may be set for very short	the mouse to restore operation. If that fails, push the
	intervals and you failed to	Power and Suspend/Resume button. (The display
	notice the display come on	may be shut off by Standby mode, Auto Suspend or
	and go off again.	Video Timeout.)
The notebook turned on	Power On Self Test (POST)	Contact your support representative.
with a series of beeps and	has detected a failure which
your display is blank.	does not allow the display
	to operate.
Your system display won’t	The system may be password-	Check the status indicator panel to verify that the
turn on when the system is	protected.	Security icon is blinking. If it is blinking, enter your
turned on or when the		password.
system has resumed.
The display goes blank by	Something is pushing on the	Check the Closed Cover switch. (See Figure on page
itself after it is used.	Closed Cover switch.	8 for location)
	The notebook has gone into	Press any button or key on the keyboard, or move the
	Video timeout, Standby mode,	mouse to restore operation. If that fails, push the
	Suspend mode or Save-to-Disk	power/suspend/resume button. Check your power
	mode because you have not	management settings, or close all applications and go
	used it for a period of time.	to Power Savings in the setup utility to adjust the
		timeout values to suit your operation needs. (See
		BIOS Setup Utility page 29 for more information)

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