Fan and heat sink
Description Spare part number
Fan 651378-001
Heat sink 651379-001
Before removing the fan and heat sink, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 41).
5. Remove the service access cover (see
Service access cover on page 42).
Remove the fan and heat sink:
1. Position the computer upside down, with the battery bay toward you.
2. Disconnect the fan cable (1) from the system board.
3. Loosen the two Phillips M2.0x4.0 captive screws (2) that secure the fan to the system board.
4. Remove the fan (3).
NOTE: When you replace the fan, be sure to route the cable correctly so that it is not pinched
by the hard drive.
44 Chapter 4 Removal and replacement procedures
