Fujitsu Lifebook T901 User Manual page 119

Problem
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.
The display has bright or
dark spots.
The display is dark when
on battery power.
You have connected an
external monitor but it
does not display anything.
Possible Cause
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.
If the spots are very tiny and
few in number, this is normal
for a large LCD display.
If the spots are numerous or
large enough to interfere with
your operation needs.
The Power Management util-
ity default is set on low bright-
ness to conserve power.
Your operating system is not
setup with the correct soft-
ware driver for that device.
113 - Troubleshooting
Possible Solutions
Press any keyboard button, or move the mouse to restore
operation. If that fails, push the Power/Suspend/Resume
slide. 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 opera-
tion 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 slide. (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.
This is normal; do nothing.
Display is faulty; contact your support representative.
Press [Fn] + [F7] to increase brightness or click the battery
gauge, click on More power options, and select Adjust the
display brightness.
Check your device and operating system documentation and
activate the proper driver.