Справочник Пользователя для IBM 8191
Undetermined
problems
1.
Power-off
the
computer.
2.
Remove
or
disconnect
the
following
components
(if
installed)
one
at
a
time.
a.
Non-IBM
devices
b.
External
devices
(modem,
printer,
or
mouse)
c.
Any
adapters
d.
Riser
card
e.
Memory
modules
f.
Extended
video
memory
g.
External
Cache
h.
External
Cache
RAM
i.
Hard
disk
drive
j.
Diskette
drive
3.
Power-on
the
computer
to
re-test
the
system.
4.
Repeat
steps
1
through
3
until
you
isolate
the
failing
device
or
adapter.
If
all
devices
and
adapters
have
been
removed,
and
the
problem
persists,
continue
to
the
next
step.
5.
Check
the
power
supply
voltages
(see
If
the
voltages
are
within
tolerance,
continue
with
the
next
step.
If
the
voltages
are
not
within
tolerance,
replace
the
power
supply.
6.
Replace
the
system
board
(see
Chapter
7.
Symptom-to-FRU
Index
109