5-2
Confidential
PCG-GRT99S (J)
PCG-GRT280ZG/GRT290ZP/GRT290Z (AM)
PCG-GRT40ZP/GRT40ZLP/GRT40ZTP/GRT40ZCP (AO)
5-2. Replacing the CPU
1. Removing the CPU
1
Insert a flat-blade screwdriver into the notch as shown in the illustration
and rotate it so that the protrusion comes to the lock release position.
2
Pull the CPU gently upward to lift it out of the CPU socket.
2. Installing the CPU
1
Align 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.
2
Insert a flat-blade screwdriver into the notch as shown in the illustration and rotate
it so that the protrusion comes to the lock position.
NOTE:
Rotate a flat-blade screwdriver to the lock position securely. If not, the operation of the
CPU may become unstable.
1
1
2
CPU
Lock release position
Lock position
CPU socket
2
2
Lock release position
Lock position
1
CPU
Reference
marks
CPU socket
