IBM 4840-544 Service Guide - Page 97

Processor, module, removing, replacing

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August 3, 2006 Processor module Processor module - removing and replacing Note: The new processor and fansink come as one FRU. Do not use the old fansink when replacing the processor. Attention: Establish personal grounding before touching this unit. See "Electrostatic discharge (ESD)" on page 197. 1. Power ON the system for at least 20 minutes to warm and loosen the heatsink thermal material. 2. Switch OFF the power to the SurePOS 500 Models 5x3 and 544/564. Unplug the power cord from the external power source. 3. Remove the back cover as described at "Covers - removing and replacing" on page 36. 4. Remove the cooling duct. See "Cooling duct - removing and replacing" on page 64. 5. Disconnect the fan cable from the system board. 6. See Figure 48 on page 70. Loosen the two screws A and remove the fansink from the processor. 7. Release the latch and carefully remove processor from the system board. 8. Install the new processor and fansink as a unit, carefully matching up the pins on the processor to the system board. Reverse the remaining steps to reassemble the system. Chapter 4. Removing and replacing FRUs for the SurePOS 500 Models 5x3 and 544/564 71

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Processor
module
–
removing
and
replacing
Note:
The
new
processor
and
fansink
come
as
one
FRU.
Do
not
use
the
old
fansink
when
replacing
the
processor.
Attention:
Establish
personal
grounding
before
touching
this
unit.
See
“Electrostatic
discharge
(ESD)”
on
page
197.
1.
Power
ON
the
system
for
at
least
20
minutes
to
warm
and
loosen
the
heatsink
thermal
material.
2.
Switch
OFF
the
power
to
the
SurePOS
500
Models
5x3
and
544/564.
Unplug
the
power
cord
from
the
external
power
source.
3.
Remove
the
back
cover
as
described
at
“Covers
–
removing
and
replacing”
on
page
36.
4.
Remove
the
cooling
duct.
See
“Cooling
duct
–
removing
and
replacing”
on
page
64.
5.
Disconnect
the
fan
cable
from
the
system
board.
6.
See
Figure
48
on
page
70.
Loosen
the
two
screws
±A²
and
remove
the
fansink
from
the
processor.
7.
Release
the
latch
and
carefully
remove
processor
from
the
system
board.
8.
Install
the
new
processor
and
fansink
as
a
unit,
carefully
matching
up
the
pins
on
the
processor
to
the
system
board.
Reverse
the
remaining
steps
to
reassemble
the
system.
Processor
module
August
3,
2006
Chapter
4.
Removing
and
replacing
FRUs
for
the
SurePOS
500
Models
5x3
and
544/564
71