Lenovo ThinkStation P900, Hardware Maintenance Manual, Page: 189 / 218

3. Align the small triangle 1 on one corner of the microprocessor socket cover with the alignment key 2
on the microprocessor socket. Lower the socket cover straight down into the microprocessor socket
on the system board.
Figure 104. Installing the microprocessor socket cover
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 183.
Replacing the internal speaker
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
To replace the internal speaker, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 111.
3. Remove the direct cooling air baffle. See “Removing and reinstalling the direct cooling air baffle” on
page 128.
4. Remove the system board. See “Replacing the system board” on page 177.
5. Disconnect the speaker cable from the system board.
Chapter 11
.
Installing or replacing hardware
181