Replacing a Hard-Drive Fan
1. Follow the instructions in Before You Begin.
2. Remove the hard drive (see Removing a Hard Drive).
3. Turn the hard drive upside down, so that the hard-drive fan is visible in the bottom of the drive bracket.
4. To remove the hard-drive fan:
a. Lift the release tab on the back panel of the fan.
b. Rotate the fan in the opposite direction from that indicated by the arrow on the back panel of the fan.
c. Lift to remove the fan and its back panel from the hard-drive bracket.
5. To replace the hard-drive fan:
a. Turn the fan upside-down, so that its backing faces up and align the triangle on the fan's back panel with the corresponding triangle on the back
of the hard-drive bracket.
b. Rotate the fan and its backing in the direction of the arrow on the fan's back panel.
6. Install the hard drive (see Installing a Hard Drive).
Optical Drive
Removing an Optical Drive
1. Follow the procedures in Before You Begin.
2. Lay the computer on its side so that the system board is on the bottom of the inside of the computer.
3. Pull up on the drive release latch and slide the drive towards the back of the computer. Then lift up to remove the drive from the computer.
