Replacing The Keyboard; Keyboard Connector - Lenovo ThinkStation 4155 Hardware Installation And Replacement Manual

10. Go to Chapter 4, "Completing the parts replacement," on page 49.

Replacing the keyboard

This section provides instructions on how to replace a keyboard.
To replace a keyboard:
1. Remove any media from the drives, shut down your operating system, and
2. Unplug all power cords from electrical outlets.
3. Locate the keyboard connector. See "Locating controls and connectors on the
Figure 45. Keyboard connector
4. Disconnect the failing keyboard cable from the computer.
5. Connect the new keyboard cable to one of the USB connectors.
6. Go to Chapter 4, "Completing the parts replacement," on page 49.
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Hardware Installation and Replacement Guide
7. Connect the internal speaker cable and the power LED cable to the system
board. See "Identifying parts on the system board" on page 10.
8. Reinstall the hard disk drive fan bracket and duct if removed.
9. Reinstall the front bezel.
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, go to:
http://www.lenovo.com/support
turn off all attached devices and the computer.
front of your computer" on page 5 or "Locating connectors on the rear of your
computer" on page 6.