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Figure 61. Installing the optical drive
7. Connect the signal and power cables to the rear of the optical drive.
8. Go to “Completing the FRU replacement” on page 131.
Replacing the card reader
Attention
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre
Safety and Warranty Guide, go to:
http://www.lenovo.com/support
This section provides instructions on how to replace the card reader.
To replace the card reader:
1. Open the computer cover. See “Opening the computer cover” on page 107.
2. Pivot the drive bay assembly upward to gain access to the card reader.
3. Locate the card reader.
4. Disconnect the card reader cable from the front USB connector on the system board. See “Locating
parts on the system board” on page 110.
Note: Make sure you note the location of the cable when you disconnect the cable from the system
board.
5. Remove the screw that secures the card reader to the chassis.
126 ThinkCentre Hardware Maintenance Manual