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4 Replacement Procedures 4.20 Fan/Heat sink/CPU
Installing the CPU/fin/DC fan
To install the CPU/fin/DC fan, follow the steps below and refer to Figure 4-31 to 4-35.
1. Make sure that the cam of the CPU socket is in the unlock (OPEN) position.
2. Set the CPU to the correct position in the CPU socket. Make sure the position of the
CPU (triangle mark) is correct to avoid damaging pins on the CPU.
NOTE: When replacing the CPU with a new one, stick the insulator (SQUARE
INSULATOR) to the CPU in place.
3. Lock the CPU by rotating clockwise the cam on the CPU socket by 180 degrees with
a flat-blade driver.
CPU
CPU socket
SQUARE INSULATOR
SQUARE INSULATOR
Mark
Figure 4-34 Installing the CPU
4-56 [CONFIDENTIAL] PORTÉGÉ M780 Maintenance Manual (960-809)