Lenovo ThinkCentre 3231 Hardware Maintenance Manual page 149

7. Lift the small handle 3 and open the retainer 1 to access the
microprocessor 2 .
Figure 53. Accessing the microprocessor
8. Lift the microprocessor straight up and out of the socket.
Notes:
a. Your microprocessor and socket might look different from the one
illustrated.
b. Note the orientation of the microprocessor in the socket. You can either
look for the small triangle 1 on one corner of the microprocessor or note
the orientation of the notches 2 on the microprocessor. This is important
when installing the new microprocessor on the system board.
c. Touch only the sides of the microprocessor. Do not touch the gold contacts
on the bottom.
d. Do not drop anything onto the microprocessor socket while it is exposed.
The socket pins must be kept as clean as possible.
Chapter 9. Replacing FRUs - Desktop computers
143