HP xw8600 HP xw8600 Workstation Service and Technical Reference Guide - Page 116

Processor heatsink, Removing the processor heatsink

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Processor heatsink This section describes how to remove and install a processor heatsink. NOTE: Not all heatsinks are the same. The heatsink shown in the following figures is an example of what might be installed in your workstation. Removing the processor heatsink Tall heatsinks are used in workstation configurations that include a memory riser or 120-watt or greater processors. All other workstation configurations use short heatsinks. To remove a heatsink: 1. Power down the workstation (see Predisassembly procedures on page 52). 2. Disconnect power from the workstation (see Predisassembly procedures on page 52). 3. Remove the side access panel (see Removing the side access panel on page 57). 4. If a memory riser assembly is installed, remove the memory riser duct (see Removing a memory riser assembly on page 78). 5. Slowly and evenly loosen one pair of diagonally opposite screws from the processor until the screw shanks disengage from the system board (1), and then loosen the remaining pair (2). (Refer to the figure below.) CAUTION: Do not fully loosen one screw, and then move on to the next. Instead, loosen all screws a little at a time, ensuring that the processor remains level. NOTE: The figure below illustrates a high power processor heatsink. Your workstation may include a low power heatsink. Figure 4-70 Identifying the proper screw loosening sequence 106 Chapter 4 Removal and replacement procedures ENWW

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Processor heatsink
This section describes how to remove and install a processor heatsink.
NOTE:
Not all heatsinks are the same. The heatsink shown in the following figures is an example of
what might be installed in your workstation.
Removing the processor heatsink
Tall heatsinks are used in workstation configurations that include a memory riser or 120-watt or greater
processors. All other workstation configurations use short heatsinks.
To remove a heatsink:
1.
Power down the workstation (see
Predisassembly procedures
on page
52
).
2.
Disconnect power from the workstation (see
Predisassembly procedures
on page
52
).
3.
Remove the side access panel (see
Removing the side access panel
on page
57
).
4.
If a memory riser assembly is installed, remove the memory riser duct (see
Removing a memory
riser assembly
on page
78
).
5.
Slowly and evenly loosen one pair of diagonally opposite screws from the processor until the screw
shanks disengage from the system board (1), and then loosen the remaining pair (2). (Refer to the
figure below.)
CAUTION:
Do
not
fully loosen one screw, and then move on to the next. Instead, loosen all
screws a little at a time, ensuring that the processor remains level.
NOTE:
The figure below illustrates a high power processor heatsink. Your workstation may
include a low power heatsink.
Figure 4-70
Identifying the proper screw loosening sequence
106
Chapter 4
Removal and replacement procedures
ENWW