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Chapter
10.
Replacing
FRUs
(Types
8098,
8171,
8172,
8173,
8424,
and
8425)
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
in
this
manual.
Important:
Before
you
install
or
remove
any
FRU,
read
Chapter
2,
“Safety
information,”
on
page
5.
These
precautions
and
guidelines
will
help
you
work
safely.
Locating
controls
and
connectors
on
the
front
of
the
computer
The
following
illustration
shows
the
locations
of
the
connectors
on
the
front
of
the
computer.
Note:
Not
all
computer
models
will
have
the
following
connectors.
1
Cover
keylock
(some
models)
6
USB
connectors
(2)
2
CD
or
DVD
drive
7
Microphone
connector
(line
in)
3
Hard
disk
drive
activity
indicator
8
Headphone
connector
(line
out)
4
Power-on
indicator
9
Diskette
drive
5
Power
button
©
Lenovo
2005,
2008.
Portions
©
IBM
Corp.
2005.
137
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