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Figure 78. Installing the system fan
10. Connect the new system fan cable to the system fan connector on the system board. See “Locating
parts on the system board” on page 80.
11. Reinstall the heat sink fan duct. See “Replacing the heat sink and fan assembly” on page 129.
12. Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 132.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 169.
Replacing the optical drive
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the Safety, Warranty, and Setup Guide that came with your computer. To obtain a copy of the Safety, Warranty, and
Setup Guide, go to:
http://www.lenovo.com/support
This section provides instructions on how to replace the optical drive.
Note: The optical drive is only available in some models.
To replace the optical drive, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 126.
140 ThinkCentre E93 Hardware Maintenance Manual