Replacing The Cpu Heatsink - HP xw9400 Service And Technical Reference Manual

4. Before lifting the heatsink, carefully break the adhesive compound between the CPU heatsink and
processor by moving the heatsink back and forth or twisting it (2).
Figure 4-46
5. Use alcohol and a soft cloth to clean all of the thermal interface material residue from the CPU
heatsink and processor.
CAUTION

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 two 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 sc rew.
92 Chapter 4 Removal and replacement procedures
Removing the CPU heatsink from the system board
Allow the alcohol on the processor and CPU heatsink to dry completely.
61) and the CPU heatsink
91).
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
Pre-disassembly procedures on page
(Removing the CPU heatsink
55). Remove the access
ENWW