Replacing The Heat Sink And Fan Assembly - Lenovo ThinkStation 2551 Hardware Maintenance Manual

9. Slide the new optical drive into the drive bay until it snaps into position.
Figure 78. Installing a new optical drive
10. Connect the signal cable and the power cable to the rear of the optical drive.
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 167.

Replacing the heat sink and fan assembly

Attention:
Do not open your computer or attempt any repair before reading and understanding "Important Safety Information"
on page 1.
This section provides instructions on how to replace the heat sink and fan assembly.
CAUTION:
The heat sink and fan assembly might be very hot. Turn off the computer and wait three to five
minutes to let the computer cool before removing the computer cover.
To replace the heat sink and fan assembly, 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. Open the computer cover. See "Opening the computer cover" on page 122.
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ThinkStation Hardware Maintenance Manual