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4.
Lift
the
power
supply
out
of
the
chassis.
5.
Install
the
new
power
supply
into
the
chassis
so
that
the
screw
holes
in
the
power
supply
align
with
those
in
the
chassis.
6.
Install
the
four
screws
to
secure
the
power
supply.
Note:
Use
only
the
screws
provided
by
Lenovo.
7.
Reconnect
the
power
supply
connectors
to
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
130.
8.
Reconnect
a
power
supply
connector
to
each
of
the
drives.
9.
Go
to
“Completing
the
FRU
replacement”
on
page
160.
Replacing
the
system
board
The
procedure
to
replace
the
system
board
is
varies
depending
upon
the
machine
type.
Types
8701,
8705,
8973,
8975,
8983,
8985,
8995,
9265,
9277,
9279,
9287,
9379,
9387,
9389,
9635,
9637,
and
9648
Important
The
heat
sink
and
microprocessor
might
be
very
hot.
Make
sure
these
components
are
cool
enough
to
safely
handle
before
continuing
this
procedure.
Note:
When
replacing
the
system
board
you
must
also
order
a
new
retention
module
for
the
new
system
board.
Make
sure
you
have
a
retention
module
for
the
new
system
board
before
continuing
with
this
procedure.
1.
Remove
the
cover.
See
“Removing
the
cover”
on
page
129.
Chapter
9.
Replacing
FRUs
(tower
computers)
135
Содержание 8013
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