Processor Heatsink - HP xw4550 Service And Technical Reference Manual

Processor heatsink

NOTE: The following illustrated processor heatsink is typical of what you might have in your
workstation. Be aware that different variations of the processor heatsinks exist, but the overall
procedures listed are sufficient to assist you in removing the processor heatsink.
To remove the processor heatsink:
1. Apply power to the workstation for a minimum of five minutes before proceeding to the next step.
Heat generated by this process will cause the thermal grease between the heatsink and processor
surfaces to become less viscous, thereby allowing the heatsink to be separated from the processor
with minimum force.
2. Shut down and disconnect power from the workstation, and remove the side access panel.
3. Loosen the four processor screws slowly and evenly, loosening them two at a time as a diagonally
opposing pair.
NOTE:
little at a time, being sure the processor remains level to the system board.
Figure 4-49
4. Disconnect the heatsink fan cable (1) from the system board.
5. Gently twist the heatsink unit to break the thermal grease binding.
ENWW
Do not fully loosen one screw, and then move on to the next. Loosen all of the screws a
Identifying proper screw loosening sequence
Steps for removing and replacing components 95