Processor Fan
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To guard against electrical shock, laceration by moving fan blades, or other unexpected injuries, always unplug your computer from the electrical outlet before opening the cover.
CAUTION: The heat sink assembly, power supply, and other components may be very hot during normal operation. Be sure that they have had sufficient time to cool before you touch them.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer’s electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
Removing the Processor Fan
1Follow the procedures in "Before You Begin" on page 97.
2Remove the computer cover (see "Removing the Computer Cover" on page 99).
3Carefully disconnect and move any cables that are routed over the heat sink assembly.
CAUTION: Despite having a plastic shield, the heat sink assembly may be very hot during normal operation. Be sure that it has had sufficient time to cool before you touch it.
4Remove the heat sink assembly (see step 6 of "Removing the Processor" on page 145).
5Disconnect the processor fan cable from the system board (see "System Board Components" on page 102).
6Ensure that all cables have been removed from the routing clips on the top of the processor fan assembly.
7Clean the grease from the heat sink surface previously in contact with the processor.
154
