Replacing The Cpu Heatsink - HP xw8400 Service And Technical Reference Manual

Replacing the CPU heatsink

1. Disconnect power from the system (
panel (Access panel on page
on page
2. Use alcohol and a soft cloth to clean all of the thermal interface material residue from the CPU
heatsink and processor.
CAUTION
3. Place the CPU heatsink on top of the processor, and align the four mounting screws with the
holes (1) in the system board.
NOTE
engage with the keyholes in the chassis, and that the system board connectors engage
correctly with the rear I/O panel, and push back on the system board while engaging the
CPU heatsink screws with the chassis standoffs. You only need to push back when trying
to engage the first screw.
Figure 4-45
88 Chapter 4 Removal and replacement procedures
58) and the CPU heatsink
86).
Allow the alcohol on the processor and CPU heatsink to dry completely.
If both CPU heatsinks were removed, be sure that all system board standoffs
Replacing the CPU heatsink on the system board
Pre-disassembly procedures on page
(Removing the CPU heatsink
53). Remove the access
ENWW