IBM 4846-545 Service Guide - Page 45

recovery

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CMOS recovery If the CMOS memory becomes corrupted and the system does not boot, restore the factory default values by following the procedure described in "Clearing the CMOS settings" on page 15. Always reset CMOS (as described at "Restoring the default CMOS settings" on page 15) before replacing a system board to resolve a problem. This practice allows you to determine if a corrupted CMOS is the source of the trouble. A corrupted CMOS can cause unpredictable problems. Chapter 2. Running diagnostics and troubleshooting 23

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CMOS
recovery
If
the
CMOS
memory
becomes
corrupted
and
the
system
does
not
boot,
restore
the
factory
default
values
by
following
the
procedure
described
in
“Clearing
the
CMOS
settings”
on
page
15.
Always
reset
CMOS
(as
described
at
“Restoring
the
default
CMOS
settings”
on
page
15)
before
replacing
a
system
board
to
resolve
a
problem.
This
practice
allows
you
to
determine
if
a
corrupted
CMOS
is
the
source
of
the
trouble.
A
corrupted
CMOS
can
cause
unpredictable
problems.
Chapter
2.
Running
diagnostics
and
troubleshooting
23