IBM 4846-545 Service Guide - Page 75

Processor, fan/heatsink, assembly, removing, replacing

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Removing and replacing FRUs Processor fan/heatsink assembly - removing and replacing 1. Switch OFF the power to the SurePOS 500. Unplug the power cord from the external power source. 2. Remove the rear cover as described at "Rear cover removal" on page 30. 3. Remove the power supply. See "Power supply - removing and replacing" on page 45 4. Remove the I/O tailgate cover as described in "Rear connector panel (tailgate) - removing and replacing" on page 47 5. Unplug the processor fan cable. A Figure 30. Removing the processor fan/ heatsink assembly. The placement of the unit in the top view is for illustrative purposes only. 6. Press the latch ( A in Figure 30) on the processor fan bracket and rotate fan bracket away from the duct. 7. Remove the processor fan/heatsink by loosening the four screws. 8. See "Processor module - removing and replacing" on page 54 to remove the processor. 9. Reverse these procedures to replace. Note: If you are reusing the existing heatsink, make sure that the thermal material is not torn or damaged. Replace, if needed. The thermal material comes installed on a new heatsink or with a new processor. Chapter 3. Removing and replacing FRUs for the SurePOS 500 Models 545 and 565 53

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Processor
fan/heatsink
assembly
-
removing
and
replacing
1.
Switch
OFF
the
power
to
the
SurePOS
500.
Unplug
the
power
cord
from
the
external
power
source.
2.
Remove
the
rear
cover
as
described
at
“Rear
cover
removal”
on
page
30.
3.
Remove
the
power
supply.
See
“Power
supply
–
removing
and
replacing”
on
page
45
4.
Remove
the
I/O
tailgate
cover
as
described
in
“Rear
connector
panel
(tailgate)
–
removing
and
replacing”
on
page
47
5.
Unplug
the
processor
fan
cable.
6.
Press
the
latch
(
±A²
in
Figure
30)
on
the
processor
fan
bracket
and
rotate
fan
bracket
away
from
the
duct.
7.
Remove
the
processor
fan/heatsink
by
loosening
the
four
screws.
8.
See
“Processor
module
–
removing
and
replacing”
on
page
54
to
remove
the
processor.
9.
Reverse
these
procedures
to
replace.
Note:
If
you
are
reusing
the
existing
heatsink,
make
sure
that
the
thermal
material
is
not
torn
or
damaged.
Replace,
if
needed.
The
thermal
material
comes
installed
on
a
new
heatsink
or
with
a
new
processor.
A
Figure
30.
Removing
the
processor
fan/
heatsink
assembly.
The
placement
of
the
unit
in
the
top
view
is
for
illustrative
purposes
only.
Removing
and
replacing
FRUs
Chapter
3.
Removing
and
replacing
FRUs
for
the
SurePOS
500
Models
545
and
565
53