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Heat sink
1. Prepare the computer for disassembly (Preparation for Disassembly on page 31).
2. Remove the computer access panel (
Computer Access Panel on page 34).
3. Disconnect the fan cable from the white system board connector labeled CPUFAN (1).
4. Unscrew the four captive screws (2) that secure the heat sink to the system board.
CAUTION: Heat sink retaining screws should be removed in diagonally opposite pairs (as in
an X) to even the downward forces on the processor. This is especially important as the pins on
the socket are very fragile and any damage to them may require replacing the system board.
5. Lift the heat sink from the processor.
Figure 5-41 Removing the heat sink
When reinstalling the heat sink, make sure that its bottom has been cleaned with an alcohol wipe and
fresh thermal grease has been applied to the top of the processor.
CAUTION: Heat sink retaining screws should be tightened in diagonally opposite pairs (as in an X)
to evenly seat the heat sink on the processor. Failure to do so could result in damage that requires
replacing the system board.
68 Chapter 5 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis