Chapter
9.
Replacing
FRUs
(Types
7390,
7391,
7392,
7396,
7397,
and
7398)
Important
Before
you
replace
any
FRU,
read
Chapter
2,
“Safety
information,”
on
page
3.
These
precautions
and
guidelines
will
help
you
work
safely.
FRU
replacements
are
to
be
done
by
trained
service
technicians
only.
This
chapter
does
not
contain
a
remove
and
replace
procedure
for
all
FRUs.
Only
the
major
FRUs
are
documented.
Note:
The
computer
might
look
slightly
different
than
the
illustrations
in
this
chapter.
©
Lenovo
2006.
Portions
©
IBM
Corp.
2005,
2006.
113
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