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Figure 62. Removing the card reader
6. Remove the card reader from the chassis.
7. Install the new card reader into the chassis and align the screw hole in the card reader with the hole in
the chassis.
8. Install the screw to secure the card reader to the chassis.
9. Connect the card reader cable to the system board.
10. Go to “Completing the FRU replacement” on page 131.
Replacing the internal speaker
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 internal speaker.
To replace the internal speaker:
1. Open the computer cover. See “Opening the computer cover” on page 107.
2. Remove the front bezel by releasing the three tabs, pivoting the front bezel outward from the top, and
pulling the front bezel off the chassis.
Chapter 9. Replacing FRUs (Machine Types: 3379, 4083, 4088, 4099, 4138, 5897, 6137, 6234, 6258, 6303, 7174, 7220,
7346, 7354, 7357, 7360, 7483, 7582, 7627, 7630, 7638, 8910, and 9964.) 127