Lenovo ThinkStation 2551, Hardware Maintenance Manual, Page: 105 / 188

8. Slide the new card reader into the drive bay until it snaps into position.
Figure 26. Installing the card reader
9. Reconnect the card reader cable to the front USB connector on the system board. See “Locating
parts on the system board” on page 76.
10. Reinstall the front bezel. See “Removing and reinstalling the front bezel” on page 89.
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 120.
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. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 88.
3. Lay the computer on its side for easier access to the system board.
4. Locate the heat sink and fan assembly. See “Locating parts on the system board” on page 76.
Chapter 10
.
Replacing FRUs (for machine types: 2551, 2552, 2553, 2554, and 2555)
99