Lenovo 4221 Laptop User Manual


 
This section provides instructions on how to replace the keyboard.
To replace the keyboard, 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 from the computer.
Note: Your keyboard might be connected to a PS/2 keyboard connector 1 or
a USB connector 2. Depending on where your keyboard is connected,
see “Locating connectors on the rear of your computer” on page 8 or
“Locating connectors on the front of your computer” on page 7.
4. Connect a new keyboard to the appropriate connector on the computer.
What to do next:
v To work with another piece of hardware, go to the appropriate section.
v To complete the replacement, go to “Completing the parts replacement” on
page 40.
Replacing the mouse
Attention
Do not open your computer or attempt any repair before reading and
understanding the “Important safety information” in the ThinkStation Safety
and Warranty Guide that came with your computer. To obtain a copy of the
ThinkStation Safety and Warranty Guide,goto:
http://www.lenovo.com/support
This section provides instructions on how to replace the mouse.
To replace the 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.
Figure 32. Keyboard connectors
Chapter 2. Installing or replacing hardware 39