Sharp LL-T2010 User's Guide Page 105

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  • TROUBLESHOOTING
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105
- Troubleshooting Your LifeBook
Your notebook appears to
change setup parameters
when you start it.
BIOS setup changes were not
saved when made and you
exited the setup utility.
Make sure you select Save Changes And Exit when exiting
the BIOS setup utility.
The BIOS CMOS hold-up bat-
tery has failed.
Contact your support representative for repairs. This is not a
user serviceable part but has a normal life of 3 to 5 years.
Your system display won’t
turn on when the system is
turned on or has resumed.
You have installed the Life-
Book/Security Application
panel.
Check the Status Indicator Panel for presence of the Security
icon. If it is visible, enter your password See “Status Indicator
Panel” on page 30.
Video Problems
The built-in display is blank
when you turn on your
LifeBook notebook.
The notebook is set for an
external monitor only.
Pressing [F10] while holding down the [Fn] key allows you to
change your selection of where to send your display video.
Each time you press the keys you will step to the next choice.
The choices, in order are: built-in display only, external moni-
tor only, both built-in display and external monitor.
Display angle and brightness
settings are not adequate for
your lighting conditions.
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.
Power management timeouts
are set for short intervals and
you didn’t see the display go
on and off again.
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 Standby mode, Auto Sus-
pend or Video Timeout)
The notebook turned on
with a series of beeps and
the built-in display is blank.
Power On Self Test (POST)
has detected a failure which
does not allow the display to
operate.
Contact your support representative.
Problem Possible Cause Possible Solutions
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