Replacing The System Board - Lenovo ThinkStation 4215 Hardware Maintenance Manual

Figure 22. Removing the microprocessor
10. Close the microprocessor retainer and lock it into position with the small
11. Reinstall the heat sink and fan assembly. See "Replacing the heat sink and fan
12. Reinstall any other parts or reconnect any other cables you removed.

Replacing the system board

This section provides instructions on how to replace the system board.
7. Make sure that the small handle is in the raised position and the
microprocessor retainer is fully open.
8. Hold the new microprocessor and align the notches on it with the alignment
keys in the microprocessor socket, or align the small triangle on one corner of
the new microprocessor with the corresponding beveled corner of the
microprocessor socket.
9. Lower the new microprocessor straight down into the microprocessor socket
on the system board.
handle to secure the new microprocessor in the socket.
assembly" on page 99.
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 FRU replacement" on
page 122.
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
Chapter 9. Replacing FRUs
103