Lenovo ThinkCentre A70 (English) User Guide - Page 37

on the system board., Lower the new microprocessor straight down into the microprocessor socket

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d. Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must be kept as clean as possible. Figure 21. Removing the microprocessor 9. Make sure that the small handle is in the raised position. 10. Remove the new microprocessor 1 from the protective cover 2 that protects the gold contacts on the bottom of the new microprocessor. 11. Hold the new microprocessor by the edges and align the notches on it with the tabs in the microprocessor socket, or align the small triangle on one corner of the microprocessor with the corresponding beveled corner of the microprocessor socket. 12. Lower the new microprocessor straight down into the microprocessor socket on the system board. 13. Close the microprocessor retainer and lock it into position with the small handle to secure the new microprocessor in the socket. 14. Reinstall the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 25. 15. Reinstall any parts and reconnect any cables that have been removed or disconnected. Chapter 2. Installing or replacing hardware 29

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d.
Do not drop anything onto the microprocessor socket while it is exposed.
The socket pins must be kept as clean as possible.
9.
Make sure that the small handle is in the raised position.
10.
Remove the new microprocessor
±1²
from the protective cover
±2²
that
protects the gold contacts on the bottom of the new microprocessor.
11.
Hold the new microprocessor by the edges and align the notches on it with
the tabs in the microprocessor socket, or align the small triangle on one corner
of the microprocessor with the corresponding beveled corner of the
microprocessor socket.
12.
Lower the new microprocessor straight down into the microprocessor socket
on the system board.
13.
Close the microprocessor retainer and lock it into position with the small
handle to secure the new microprocessor in the socket.
14.
Reinstall the heat sink and fan assembly. See “Replacing the heat sink and fan
assembly” on page 25.
15.
Reinstall any parts and reconnect any cables that have been removed or
disconnected.
Figure 21. Removing the microprocessor
Chapter 2. Installing or replacing hardware
29