IBM 4800-741 Hardware Service Guide - Page 63

Removing, processor, Models

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Updated July 14, 2008 Removing the processor fan (Models 742, 782 only) Follow these steps to remove and replace the processor fan: 1. Follow the instructions in "Removing the covers" on page 29 to remove the front bezel and top cover. 2. Follow the instructions in "Removing the top plate" on page 32 to remove the top plate. 3. Follow the instructions in "Removing the air duct (Models 722, 74x, 78x, and C4x)" on page 44. Figure 33. Processor fan and levers 4. Remove the processor fan by pressing down on the levers ( B in Figure 33) to release the connections. 5. Lift to remove. 6. To replace, align the fan with the board connectors and press down to lock into place. Removing the heat sink and processor Attention: Establish personal grounding before touching this unit. For more information, see "Federal Communications Commission (FCC) statement" on page 105. To remove the heat sink and processor: 1. Follow the instructions in "Removing the covers" on page 29 to remove the front bezel and top cover. 2. Follow the instructions in "Removing the top plate" on page 32 to remove the top plate. 3. If installed, remove the air duct. 4. For Models 7x2, go to step 9 on page 46. For Models 7x1, continue with the steps. Chapter 2. Removal and replacement procedures 45

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Removing
the
processor
fan
(Models
742,
782
only)
Follow
these
steps
to
remove
and
replace
the
processor
fan:
1.
Follow
the
instructions
in
“Removing
the
covers”
on
page
29
to
remove
the
front
bezel
and
top
cover.
2.
Follow
the
instructions
in
“Removing
the
top
plate”
on
page
32
to
remove
the
top
plate.
3.
Follow
the
instructions
in
“Removing
the
air
duct
(Models
722,
74x,
78x,
and
C4x)”
on
page
44.
4.
Remove
the
processor
fan
by
pressing
down
on
the
levers
(
±B²
in
Figure
33)
to
release
the
connections.
5.
Lift
to
remove.
6.
To
replace,
align
the
fan
with
the
board
connectors
and
press
down
to
lock
into
place.
Removing
the
heat
sink
and
processor
Attention:
Establish
personal
grounding
before
touching
this
unit.
For
more
information,
see
“Federal
Communications
Commission
(FCC)
statement”
on
page
105.
To
remove
the
heat
sink
and
processor:
1.
Follow
the
instructions
in
“Removing
the
covers”
on
page
29
to
remove
the
front
bezel
and
top
cover.
2.
Follow
the
instructions
in
“Removing
the
top
plate”
on
page
32
to
remove
the
top
plate.
3.
If
installed,
remove
the
air
duct.
4.
For
Models
7x2,
go
to
step
9
on
page
46.
For
Models
7x1,
continue
with
the
steps.
Figure
33.
Processor
fan
and
levers
Updated
July
14,
2008
Chapter
2.
Removal
and
replacement
procedures
45