Chapter
6.
Replacing
FRUs
FRU
replacements
are
to
be
done
by
trained
service
technicians
only.
Important:
Before
you
install
or
remove
any
FRU,
read
“Safety
information”
on
page
153.
These
precautions
and
guidelines
will
help
you
work
safely.
Locating
controls
and
connectors
on
the
front
of
the
computer
This
section
shows
the
various
external
connectors
on
the
computer
to
which
you
can
attach
external
devices.
1
Cover
keylock
(some
models)
6
USB
connectors
(2)
2
Optical
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
©
Copyright
IBM
Corp.
2005
23
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