Rear Chassis Fan
Description Spare part number
Rear chassis fan 643908-001
The rear fan is mounted to the rear chassis wall and secured by four Phillips screws.
1. Prepare the computer for disassembly (
Preparation for Disassembly on page 75).
2. Remove the computer access panel (
Access Panel on page 76).
3. Disconnect the fan control cable (1) from the red/brown system board labeled CHFAN2.
4. Remove the four Phillips screws (2) that secure the fan housing to the chassis.
5. Remove the fan from the chassis (3).
Figure 6-33 Removing the rear chassis fan
To install the fan, reverse the removal procedure. Be sure to orient the air flow out of the unit.
Rear Chassis Fan 109
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