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Figure34. Installing a new internal speaker
7. Connect the internal speaker cable to the system board. See “Locating parts on the system board”
on page 10.
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 38.
Replacing the keyboard or mouse
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 keyboard or mouse.
To replace the keyboard or mouse, do the following:
1. Remove any media from the drives. Then, turn off all attached devices and the computer.
2. Disconnect all power cords from electrical outlets.
3. Disconnect the old keyboard cable or mouse cable from the computer.
4. Connect a new keyboard or mouse to one of the USB connectors on the computer. Depending on
where you want to connect the new keyboard or mouse, see “Locating connectors on the front of your
computer” on page 6 or “Locating connectors on the rear of your computer” on page 7.
Chapter 2. Installing or replacing hardware 37