IBM 8671 Hardware Maintenance Manual - Page 102

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Note: If your server is a tower model, you might find it easier to install the hot-swap power-supply option if you turn the server on its side so that the power supply is on the bottom. 1. Review the information in "Installation guidelines" on page 45, "Handling static-sensitive devices" on page 46, and "Safety information" on page 169. 2. Turn off the server and disconnect all power cords and external cables ("Turning off the server" on page 9); then, remove the server cover (see "Removing the server left-side cover and bezel (tower model)" on page 55 or "Removing the server top cover and bezel (rack configuration)" on page 57). 3. Remove the adapter-support bracket. See "Removing and installing the adapter-support bracket" on page 58 for instructions. 4. Disconnect the power-supply cables from the system board and devices in your server. a. Disconnect the small-device power cable (P7) from the back of the diskette drive. Note: You might need to remove the diskette drive from the server in order to disconnect and reconnect its cables. The diskette drive is held in the server by release tabs that are accessed by removing the server front bezel. b. Disconnect the device power connector (P5) from the back of the CD-ROM drive. c. Disconnect the other device power connectors (P4 and P6) from the rear of any other devices in the server. d. Disconnect the SCSI cable (P2) from the SCSI backplane. e. Disconnect the power cable (P1) from the J4 connector on the system board. f. Disconnect the power signal cable (P3) from the J10 connector on the system board. g. If your server has the 3-Pack Ultra320 Hot-Swap Expansion option installed, disconnect the power connector (P8) from the power connector on the 3-Pack backplane. 5. Remove the fixed power supply (see the following illustration). 92 xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide 1 2

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Note:
If
your
server
is
a
tower
model,
you
might
find
it
easier
to
install
the
hot-swap
power-supply
option
if
you
turn
the
server
on
its
side
so
that
the
power
supply
is
on
the
bottom.
1.
Review
the
information
in
“Installation
guidelines”
on
page
45,
“Handling
static-sensitive
devices”
on
page
46,
and
“Safety
information”
on
page
169.
2.
Turn
off
the
server
and
disconnect
all
power
cords
and
external
cables
(“Turning
off
the
server”
on
page
9);
then,
remove
the
server
cover
(see
“Removing
the
server
left-side
cover
and
bezel
(tower
model)”
on
page
55
or
“Removing
the
server
top
cover
and
bezel
(rack
configuration)”
on
page
57).
3.
Remove
the
adapter-support
bracket.
See
“Removing
and
installing
the
adapter-support
bracket”
on
page
58
for
instructions.
4.
Disconnect
the
power-supply
cables
from
the
system
board
and
devices
in
your
server.
a.
Disconnect
the
small-device
power
cable
(P7)
from
the
back
of
the
diskette
drive.
Note:
You
might
need
to
remove
the
diskette
drive
from
the
server
in
order
to
disconnect
and
reconnect
its
cables.
The
diskette
drive
is
held
in
the
server
by
release
tabs
that
are
accessed
by
removing
the
server
front
bezel.
b.
Disconnect
the
device
power
connector
(P5)
from
the
back
of
the
CD-ROM
drive.
c.
Disconnect
the
other
device
power
connectors
(P4
and
P6)
from
the
rear
of
any
other
devices
in
the
server.
d.
Disconnect
the
SCSI
cable
(P2)
from
the
SCSI
backplane.
e.
Disconnect
the
power
cable
(P1)
from
the
J4
connector
on
the
system
board.
f.
Disconnect
the
power
signal
cable
(P3)
from
the
J10
connector
on
the
system
board.
g.
If
your
server
has
the
3-Pack
Ultra320
Hot-Swap
Expansion
option
installed,
disconnect
the
power
connector
(P8)
from
the
power
connector
on
the
3-Pack
backplane.
5.
Remove
the
fixed
power
supply
(see
the
following
illustration).
2
1
92
xSeries
235
Type
8671:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide