Acer Altos R920 Series - Manual (Page 90)

3 System upgrade 72
(2) Pull the heat sink away from the CPU socket.
(3) Lay down the heat sink in an upright position—with the
thermal patch facing upward. Do not let the thermal patch
touch the work surface.
(4) Use an alcohol pad to wipe off the thermal grease from both
the heat sink and processor.
4 Remove the processor.
Warning! The processor becomes very hot when the system
is on. Allow it to cool off first before handling.
(1) Pull the CPU socket retainer lever to the fully open, upright
position.
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