Fujitsu Siemens Computers N6470 manual Video Problems, Sages on

Problem	Possible Cause	Possible Solutions
An error message is dis-	Power On Self Test	See the Power On Self Test (POST) messages to determine the
played on the screen during	(POST) has detected a	meaning and severity of the problem. Not all messages are errors;
the notebook (boot)	problem.	some are simply status indicators. See “Power On Self Test Mes-
sequence.		sages” on page 93.
Your notebook appears to	BIOS setup changes	Make sure you select Save Changes And Exit when exiting the
change setup parameters	were not saved when	BIOS setup utility.
when you start it.	made and you exited
	the setup utility.
	The BIOS CMOS hold-	Contact your support representative for repairs. This is not a user
	up battery has failed.	serviceable part but has a normal life of 3 to 5 years.
Your system display won’t	You have installed the	Check the Status Indicator Panel for presence of the Security icon.
turn on when the system is	LifeBook/Security Appli-	If it is visible, enter your password See “Status Indicator Panel” on
turned on or has resumed.	cation panel.	page 22.
Video Problems
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	change your selection of where to send your display video. Each
Book notebook.	only.	time you press the 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 display angle and	Move the display and the brightness control until you have ade-
	brightness settings are	quate visibility. Pressing either the [F6] or [F7] keys while holding
	not adequate for your	down the [Fn] key also allows you to change the brightness level
	lighting conditions.	of the display.
The built-in display is blank	The power manage-	Press a keyboard button or move the mouse to restore operation.
when you turn on your Life-	ment timeouts may be	If that fails, push the Power/Suspend/Resume button. (The display
Book notebook.	set for very short inter-	may be shut off by Standby mode, Auto Suspend or Video Time-
(continued)	vals and you failed to	out)
	notice the display come
	on and go off again.

90 - Troubleshooting