T r o u b l e s h o o t i n g
L i f e B o o k 4 0 0 S e r i e s f r o m F u j i t s u
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nnnn System RAM Passed
Where nnnn is the
amount of system RAM in kilobytes success-
fully tested.
*System timer error
The timer test failed. The
main clock that operates the computer is faulty.
Requires repair of system board. Contact your
support representative for repairs.
UMB upper limit segment address:nnnn
Displays the address of the upper limit of
Upper Memory Blocks,indicating released
segments of the BIOS memory which may
be reclaimed by a virtual memory manager.
Video BIOS shadowed
Video BIOS successfully
copied to shadow RAM.
Emergency CD-ROM Tray Release
If for some reason the eject button fails, you
can open the CD-ROM tray with a paper clip
or similar tool inserted into the eject hole in the
far right side of the front of the tray. Straighten
one side of a paper clip and push it gently into
the hole. The tray will pop out a short distance.
Installing and Removing the Internal
Hard Drive
There is a bay in the bottom of your notebook
which contains the internal hard drive. The
hard drive only needs to be changed if there
is a serious drive failure. You may wish to have
a trained repair person replace a drive for you
and re-install your backed up operating system,
applications and data.
Figure 5-1 Emergency CD-ROM Tray Release
C A U T I O N
Contact your Support Representative
before making any hard drive replace-
ment whether you or a trained technician
is making the change.
Summary of Contents for 420D
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