IBM 8688 Manuale Utente
Chapter
5.
Field
replaceable
units
The
following
information
describes
procedures
for
removing
and
installing
certain
components
inside
the
system.
Only
a
qualified
service
technician
is
authorized
to
replace
the
components
described
in
this
section.
Important:
The
field
replaceable
unit
(FRU)
procedures
are
intended
for
trained
servicers
who
are
familiar
with
IBM
xSeries
products.
Note:
Before
servicing
this
system,
read
and
Memory-board
assembly
The
memory-board
assembly
consists
of
the
memory
board,
memory,
memory-board
VRM,
and
the
memory
switch
card
and
cable.
The
following
sections
describe
how
to
remove
the
memory
board,
memory-board
VRM,
and
the
memory
switch
card
and
cable.
For
instructions
to
remove
and
replace
memory,
see
Memory
board
Note:
When
replacing
the
memory
board,
you
must
either
update
the
system
with
the
latest
firmware
or
restore
the
pre-existing
firmware
that
the
customer
provides
on
a
CD
image.
See
Before
you
begin:
v
Read
v
Read
the
safety
notices
at
v
Read
Complete
the
following
steps
to
replace
a
memory
board:
1.
Turn
off
the
server
(see
and
disconnect
all
power
cords
and
external
cables.
2.
Open
the
cover
(see
©
Copyright
IBM
Corp.
2003
115