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Fan Sink Assembly
Description Spare part number
Fan sink for use in models with Intel processors 667727-001
Fan sink for use in models with AMD processors 657402-001
1. Prepare the computer for disassembly (Preparation for Disassembly on page 49).
2. Remove the access panel (
Access Panel on page 50).
3. Disconnect the fan sink cable from the white system board connector labeled CPU FAN (1).
NOTE: On AMD models the connector label is CPU_FAN1.
4. Loosen the four captive Torx screws (2) that secure the fan sink to the system board.
5. Lift the heat sink from the processor (3) and set it on its side to keep from contaminating the
work area with thermal grease.
CAUTION: Heat sink retaining screws should be tightened in diagonally opposite pairs (as in an X)
to evenly seat the heat sink to 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.
When reinstalling an existing 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. New heat sinks come
from the factory with fresh thermal grease already applied.
78 Chapter 7 Removal and Replacement Procedures – Microtower Chassis