Lenovo 3140 Personal Computer User Manual


 
10. Connect the new system fan assembly cable to the system fan connector on the system board. See
“Locating parts on the system board” on page 11.
11. Reinstall the heat sink fan duct. See “Replacing the heat sink and fan assembly” on page 46.
12. Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 40.
What to do next:
To work with another piece of hardware, go to the appropriate section.
To complete the replacement, go to “Completing the parts replacement” on page 60.
Replacing the keyboard
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important
safety information” on page v
.
This section provides instructions on how to replace the keyboard.
To replace the keyboard, do the following:
1. Remove all 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.
4. Connect a new keyboard to the appropriate connector on the computer. Your keyboard might be
connected to a PS/2 keyboard connector 1 or a USB connector 2 . Depending on where you want
to connect your keyboard, see “Locating connectors, controls, and indicators on the front of your
computer” on page 7 or “Locating connectors on the rear of your computer” on page 8.
Figure 44. Keyboard connectors
What to do next:
To work with another piece of hardware, go to the appropriate section.
To complete the replacement, go to “Completing the parts replacement” on page 60
.
Replacing the mouse
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important
safety information” on page v
.
This section provides instructions on how to replace the mouse.
To replace the mouse, do the following:
Chapter 5. Installing or replacing hardware 59