HP xw9400 User's Guide download pdf (Page 100)

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 Removing the CPU heatsink from the system board

5. Use alcohol and a soft cloth to clean all of the thermal interface material residue from the CPU

heatsink and processor.

CAUTION Allow the alcohol on the processor and CPU heatsink to dry completely.

Replacing the CPU heatsink

1. Disconnect power from the system ( Pre-disassembly procedures on page 55). Remove the access

panel (

Access panel on page 61) and the CPU heatsink (Removing the CPU heatsink

on page 91).

2. Use alcohol and a soft cloth to clean all of the thermal interface material residue from the CPU

heatsink and processor.

CAUTION Allow the alcohol on the processor and CPU heatsink to dry completely.

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 If both CPU heatsinks were removed, be sure that all system board standoffs

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 ENWW

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HP xw9400 User's Guide Page 100