Fujitsu PRIMERGY RX300 S7 Upgrade And Maintenance Manual page 330

Processors
Figure 182: Removing the processor heat sink (B)
Ê Carefully turn the heat sink back and forth to detach it from the processor (1).
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This may be necessary due to the adhesive quality of the thermal
paste located between the heat sink and processor.
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CAUTION!
Pay special attention not to damage any system board components
surrounding the processor socket.
Ê Lift the heat sink out of the chassis (2).
Ê Thoroughly clean residual thermal paste from the surface of the heat sink
and the processor using a lint-free cloth.
330 Upgrade and Maintenance Manual
RX300 S7