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4 Replacement Procedures 4.7 Cooling Fin/CPU
Installing the Cooling fin/CPU
The following describes the procedure for installing the cooling fin/CPU (See Figure 4-11 to
4-16).
1. Check that the mark on the cam is in the unlocking position.
2. Attach the CPU to the correct position in the CPU socket.
CAUTION: Place the CPU in such direction as shown below. (Pay attention to the
position of the triangle mark on the CPU.)
Triangle mark
Figure 4-15 Installing CPU
3. Fix the CPU by rotating clockwise the cam by 90 degrees with a flat-blade
screwdriver.
4. If there is already silicon grease on the CPU and cooling fin, clean it with a cloth.
Using a special applicator, apply quarter of scale (0.25ml) of silicon grease evenly on
the CPU chip.
NOTE: If silicon grease has already been applied to the CPU or cooling fin, wipe clean
with a cloth and apply new silicon grease. The computer will not operate correctly if the
CPU is not firmly in contact with the cooling fin.
4-24 [CONFIDENTIAL] Satellite A50S/TECRA A3X Maintenance Manual (960-534)