Dell XPS 720 (Mid 2007) - Manual (Page 136)

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Removing and Installing Parts
4 Remove the processor airflow shroud (see "Removing the Processor Airflow Shroud Assembly" on
page 128).
5 In succession, carefully pull on the two bottom corners of the fan to detach the rubber grommets
securing the fan to the processor airflow shroud, the lift the fan to detach the two remaining
grommets.
Installing the CPU Fan
1 With the fan power cable oriented downward, align the rubber grommets in the fan with the holes in
each corner of the processor airflow shroud, then pull the grommets through until they snap into place.
NOTE:
Airflow direction and orientation are shown on the side of the fan.
1 rubber grommet (4) 2 CPU fan 3 processor airflow shroud
1
2
3