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b. Thoroughly clean the thermal connections (1) on the system board and the heat sink (2)
before replacing a heat sink onto a system board.
3. Reverse this procedure to replace the heat sink. Replace the thermal material that ships with the
replacement heat sink.
Fan
Description Spare part number
Fan 697914-001
IMPORTANT: Make special note of each screw and screw lock size and location during removal
and replacement.
Before removing the fan, follow these steps:
1. Shut down the computer.
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 20).
5. Remove the keyboard (see
Keyboard on page 24).
6. Remove the top cover (see
Top cover on page 28).
7. Remove the hard drive (see
Hard drive on page 32).
8. Remove the USB board (see
USB board/Audio jack on page 34).
9. Remove the WLAN (see
WLAN module on page 35).
10. Remove the system board (see
System board on page 38).
To remove the fan from the base enclosure:
1. Disconnect the fan cable.
Component replacement procedures 47