Specifications

Installing the CPU heatsink
To install a heatsink:
1. Prepare the computer for servicing by following the
Predisassembly procedures on page 62.
CAUTION: Failure to follow the predisassembly procedures can result in equipment damage or
data loss.
2. Remove the access panel (see Removing the access panel on page 64).
3. Remove the airflow guide.
4. Perform one of the following tasks:
●
If you are reusing the original heatsink, clean the old themal compound from the bottom of
the heatsink, then apply a new layer of thermal compound to the center of the CPU top
surface.
●
If you are using a new CPU heatsink, remove the thermal compound protective liner from the
bottom of the new heatsink. (New heatsinks already have thermal compound on the heatsink
surface.)
5. Align the heatsink's four mounting screws with the mounting holes in the chassis.
6. Carefully place the heatsink on the CPU.
7. 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.
8. Tighten each set of diagonally opposed screws a little at a time to 6 in-lbs of torque.
CAUTION: Do not overtighten the heatsink screws. Overtightening can strip the threads in the
chassis.
9. Replace the airflow guide.
10. Replace the access panel (see
Installing the access panel on page 64).
11. Restore all connections and equipment that you removed during the
Predisassembly procedures
on page 62.
ENWW
Removing and installing components
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