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4 Replacement Procedures 4.12 CPU
Installing the CPU
To install the CPU, follow the steps below and refer to the figures in the preceding
section.
CAUTION: If you remove the heat sink, you should use the CPU grease tool to remove
the grease on the CPU and heat sink. Reapply fresh grease before installing the heat sink.
1. Make sure that the notch on the cam is aligned with the open position.
2. Seat the CPU to align the triangle mark on the CPU with the one on the CPU socket.
Make sure the alignment is exact to avoid damaging pins on the CPU.
3. Press the CPU softly with your fingers and turn the cam on the CPU socket to the
closed position with a flat-blade screwdriver to secure the CPU.
4. Seat the heat sink over the CPU and secure with four screws in the order indicated
on the heat sink (1,2,3,4).
5. Secure the CPU compartment cover with the five embedded security screws.
4-38 Satellite P20-25 Series Maintenance Manual