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4 Replacement Procedures 4.14 Fan/CPU
3. Unlock the CPU by rotating counterclockwise the cam on the CPU socket by 180
degrees with a flat-blade driver.
Figure 4-22 Removing the CPU
4. Remove the CPU.
Installing the CPU
The following describes the procedure for installing the CPU. (See Figure 4-21 to 4-23.)
1. Make sure that the cam of the CPU socket is in the unlock (OPEN) position.
2. Install the CPU on the CPU socket and check the CPU is installed on the right
position.
3. Lock the CPU by rotating clockwise the cam on the CPU socket by 180 degrees with
a flat-blade driver.
4-38 [CONFIDENTIAL] TECRA M4 Maintenance Manual (960-521)