Chassis Fan
1. Prepare the computer for disassembly (Preparation for Disassembly on page 61).
2. Remove the computer cover (
Computer Cover on page 64).
3. Remove the fan shroud 
Fan Shroud on page 103.
4. Remove the three screws that secure the fan to the chassis (1) then tilt the top of the fan towards
the inside of the chassis (2) to remove it
5. Disconnect the fan control cable from the system board (3).
Figure 7-52 Removing the Chassis Fan
To install the chassis fan, reverse the removal procedures.
104 Chapter 7   Removal and Replacement Procedures — Small Form Factor (SFF) Chassis ENWW