Fujitsu Lifebook T900 User Manual page 111

Problem
The built-in display is blank
when you turn on your
LifeBook Tablet PC.
(continued)
The Tablet PC turned on
with a series of beeps and
the built-in display is blank.
The display goes blank by
itself after you have been
using it.
Your display won't turn on
when the system is turned
on or when it has
resumed.
The display does not
close.
Possible Cause
Display angle and brightness
settings are not adequate for
your lighting conditions.
Power management time-
outs are set for short intervals
and you didn't see the display
go on and off again.
Power On Self Test has
detected a failurethat doesn't
allow the display to operate.
The Tablet PC has gone into
Video timeout, Sleep mode,
or Save-to-Disk mode
because you have not used it
for a period of time.
The power management time-
outs may be set for very short
intervals and you failed to
notice the display come on
and go off again.
The system may be pass-
word-protected.
A foreign object, such as a
paper clip, is stuck between
the display and keyboard.
110 - Troubleshooting
Possible Solutions
Move the display and the brightness control until you have
adequate visibility. Pressing either the [F6] or [F7] keys while
holding down the [Fn] key also allows you to change the
brightness level of the display.
Press a keyboard button or move the mouse to restore oper-
ation. If that fails, push the Power/Suspend/Resume button.
(The display may be shut off by Sleep mode, Auto Suspend
or Video Timeout)
Contact your support representative.
Press any keyboard button, or move the mouse to restore
operation. If that fails, push the Power/Suspend/Resume but-
ton. Check your power management settings, or close your
applications and go to the Power Savings menu of the setup
utility to adjust the timeout values to better suit your operation
needs. See "BIOS Setup Utility" on page 71.
Press any button on the keyboard, or move the mouse to
restore operation. If that fails, push the Power/Sus-
pend/Resume button. (The display may be shut off by Sleep
Mode, Auto Suspend or Video Timeout)
Check the status indicator panel to verify that the Security
icon is blinking. If it is blinking, enter your password.
Remove all foreign objects from the keyboard.