Replacement Procedures
4. Unlock the CPU by rotating the cam on the CPU socket 120 degrees to the
counterclockwise with a flat-blade screwdriver.
5. Remove the CPU.
Figure 4-26 Remove the CPU
Installing the CPU
The following describes the procedure of installing the CPU.
1. Check that the mark of cam is in the unlocking position.
2. Attach the CPU to the correct position in the CPU socket.
3. Fix the CPU by rotating the cam 120 degrees to the clockwise with a flat-blade
screwdriver.
4. If there is already silicon grease on the CPU, clean it with a cloth.
Using a special applicator, apply silicon grease so that the CPU chip on the CPU is
completely covered.
5. Please apply 0.1cc silicon grease (Shinetsu7762) for each repair.
Satellite U400/Satellite Pro U400/PORTEGE M800
Maintenance Manual 43
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