CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the
Product Information Guide.
NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically
touching an unpainted metal surface, such as the back panel on the computer.
NOTICE: Handle the microprocessor module with care. Hold the microprocessor module by its edges and do
not touch the processor die (the small chip in the center of the module).
Loosen the three captive screws securing the microprocessor module cover, then remove the cover
and set it aside.
1
microprocessor module cover
2
captive screws (3)
NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the
microprocessor thermal-cooling assembly. Oils in your skin can reduce the heat transfer capability of the thermal
pads.
NOTICE: To avoid damaging the microprocessor, hold the screwdriver so that it is perpendicular to the
microprocessor module when turning the cam screw.
To loosen the ZIF-socket cam lock, use a small, flat-blade screwdriver and rotate the ZIF-socket cam
screw counterclockwise until it comes to the cam stop.
NOTE: The ZIF-socket cam screw secures the microprocessor module to the system board.
1
microprocessor pin-1 corner
2
microprocessor module
3
processor die
4
ZIF socket
5
ZIF-socket cam screw
6
screwdriver
NOTICE: When removing the microprocessor module, pull the module straight up and out of the ZIF socket.
Exercise care not to bend the pins on the microprocessor module.
Lift the microprocessor module straight up and out of the ZIF socket.
Replacing the Microprocessor Module
CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically
touching an unpainted metal surface, such as the back panel on the computer.
NOTE: When installing a new microprocessor module, use the thermal cooling assembly or thermal pad that came
with the module, if applicable.
NOTICE: Handle the microprocessor module with care. Hold the microprocessor module by its edges and do not
touch the processor die (the small chip in the center of the module).
NOTICE: Ensure that the cam lock is in the fully open position before seating the microprocessor module. Seating
the microprocessor module properly in the ZIF socket does not require force. A microprocessor module that is not
properly seated can result in an intermittent connection or permanent damage to the microprocessor and ZIF
socket.
Align the pin-1 corner of the new microprocessor module with the pin-1 corner of the ZIF socket, and
insert the microprocessor module.
NOTE: The pin-1 corner of the microprocessor module has a triangle that aligns with the triangle on the pin-1 corner of the ZIF socket.
NOTE: Gently press down on the substrate on which the processor die is mounted to ensure the microprocessor module is properly seated.
When the microprocessor module is properly seated, all four corners of the module are aligned at the same height. If one or more corners of the module is higher than the others, the module is not properly seated.
NOTICE: To avoid damaging the microprocessor, hold the screwdriver so that it is perpendicular to the
microprocessor module when turning the cam screw.
To tighten the ZIF-socket cam lock and secure the microprocessor module to the system board, use a
small, flat-blade screwdriver and rotate the ZIF-socket cam screw clockwise until it comes to the cam
stop.
