Disconnect the CPU heatsink fan cable from the system board (1) as shown in the following figure.
Before lifting the heatsink, gently twist the heatsink to break the thermal compound between the
CPU and the heatsink.
Lift the CPU heatsink out of the chassis (2).
Use alcohol and a soft cloth to clean the thermal interface residue from the CPU and the heatsink.
Allow the alcohol on the CPU and CPU heatsink to dry completely.
Installing the CPU heatsink
To install a heatsink:
Disconnect power from the workstation (see
Remove the side access panel (see
Remove the CPU heatsink (see
Perform one of the following tasks:
If you are reusing the original heatsink, apply thermal compound to the center of the CPU top
If you are using a new CPU heatsink, do not apply thermal compound to the CPU because
the new heatsink already has thermal compound applied to the heatsink surface. Instead,
remove the thermal compound protective liner from the bottom of the new heatsink.
Align the heat sink's four mounting screws with the mounting holes in the chassis.
Carefully place the heatsink on the CPU.
Tighten each heatsink screw a little at a time to ensure that the CPU stays level. Do not fully tighten
one screw and then move on to the next.
Disconnecting the heatsink fan cable
Removing the side access panel on page
Removing the CPU heatsink on page
Predisassembly procedures on page
Removing and installing components