4 Replacement Procedures 4.18 Heat sink/CPU
3. Remove the heat sink on the CPU.
CAUTION: When removing the heat sink, be careful not to damage the CPU under the
fin.
4. Unlock the CPU by rotating counterclockwise the cam on the CPU socket by 90
degrees with a flat-blade driver.
Figure 4-33 Replacing the CPU
4. Remove the CPU.
CAUTION: When removing the CPU, lift it up right above. Otherwise, pins of CPU may
be damaged.
4-52 [CONFIDENTIAL] PORTEGE M400 Maintenance Manual (960-541)
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