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Confidential
PCG-FX777/FX877 (AM)
2. Socket type 3

1. Removing the CPU

2. Installing the CPU

1Align the triangle reference mark of the CPU with that of the CPU socket and insert all the pins of the CPU to
the corresponding holes of the CPU socket.
2Insert a flat-blade screwdriver into the notch as shown in the illustration and rotate it so that the protrusion
comes to the “L” (lock) position.
1Insert a flat-blade screwdriver into the notch as shown in the illustration and rotate it so that the
protrusion comes to the “O” (lock release) position.
2Pull the CPU gently upward to lift it out of the CPU socket.
NOTE:
•Considerable force is required to rotate a flat-blade screwdriver.
•Rotate a flat-blade screwdriver to the “L” (lock) position securely. If not, the operation of the CPU may
become unstable.
Lock release position [O]
2
1
CPU socket
CPU
12
Lock position [L]
CPU
CPU socket
Reference
marks
O
L
O
L
Protrusion
Protrusion