IBM 4851 514 Service Guide - Page 93

plate, removal, replacement

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Updated October, 2008 Removing and replacing FRUs Attention: Avoid dropping or shocking the HDD. 6. To replace the HDD, reverse this procedure. Be careful not to scrape the cable when replacing the back cover. 7. Power ON the system and use the Setup Utility to verify that the system recognizes the new HDD. Note: If the system fails to recognize the new HDD, verify that all HDD cables are seated and then verify that the address jumper is correctly installed. If the HDD requires that a jumper is recognized as Drive 0, the correct position is indicated on a label on the top of the HDD. HDD cables - removing and replacing 1. Remove the HDD front cover as described at "HDD cover - removing and replacing" on page 73. 2. Remove the HDD power connector and data cable connector from the side of the HDD. 3. Cut any cable ties on the cables. 4. Remove the power supply. See "Power supply - removing and replacing" on page 68. 5. Disconnect the power cable from the power supply and the data cable from the system board. 6. Remove the base plate. See "Base plate - removal and replacement." 7. Pull the power cable free from the plastic guide in the frame. To replace, reverse this procedure. Base plate - removal and replacement Note: The base plate is not present when a mounting foot is used. 1. Remove the back cover as described at "Rear cover - removing and replacing" on page 61. 2. Remove the two screws A attaching the base plate B to the frame. 3. Remove the cable-tie bar. See "Cable-tie bar - removing and replacing" on page 63. 4. Slide the tower toward the rear and lift it off the base. To replace, reverse this procedure. Chapter 5. Removing and replacing FRUs 77

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Attention:
Avoid
dropping
or
shocking
the
HDD.
6.
To
replace
the
HDD,
reverse
this
procedure.
Be
careful
not
to
scrape
the
cable
when
replacing
the
back
cover.
7.
Power
ON
the
system
and
use
the
Setup
Utility
to
verify
that
the
system
recognizes
the
new
HDD.
Note:
If
the
system
fails
to
recognize
the
new
HDD,
verify
that
all
HDD
cables
are
seated
and
then
verify
that
the
address
jumper
is
correctly
installed.
If
the
HDD
requires
that
a
jumper
is
recognized
as
Drive
0,
the
correct
position
is
indicated
on
a
label
on
the
top
of
the
HDD.
HDD
cables
–
removing
and
replacing
1.
Remove
the
HDD
front
cover
as
described
at
“HDD
cover
–
removing
and
replacing”
on
page
73.
2.
Remove
the
HDD
power
connector
and
data
cable
connector
from
the
side
of
the
HDD.
3.
Cut
any
cable
ties
on
the
cables.
4.
Remove
the
power
supply.
See
“Power
supply
–
removing
and
replacing”
on
page
68.
5.
Disconnect
the
power
cable
from
the
power
supply
and
the
data
cable
from
the
system
board.
6.
Remove
the
base
plate.
See
“Base
plate
-
removal
and
replacement.”
7.
Pull
the
power
cable
free
from
the
plastic
guide
in
the
frame.
To
replace,
reverse
this
procedure.
Base
plate
-
removal
and
replacement
Note:
The
base
plate
is
not
present
when
a
mounting
foot
is
used.
1.
Remove
the
back
cover
as
described
at
“Rear
cover
–
removing
and
replacing”
on
page
61.
2.
Remove
the
two
screws
±A²
attaching
the
base
plate
±B²
to
the
frame.
3.
Remove
the
cable-tie
bar.
See
“Cable-tie
bar
–
removing
and
replacing”
on
page
63.
4.
Slide
the
tower
toward
the
rear
and
lift
it
off
the
base.
To
replace,
reverse
this
procedure.
Removing
and
replacing
FRUs
Updated
October,
2008
Chapter
5.
Removing
and
replacing
FRUs
77