Fujitsu PRIMERGY RX4770 M6 Upgrade And Maintenance Manual page 262

Processor (CPU)
Installing the heat sink
Figure 152: Removing the heat sink from the protective cover
▶ If applicable, remove the heat sink from the protective cover.
▶ If using a heat sink again, clean residual thermal paste from the heat sink
surface using a lint-free cloth.
262 Upgrade and Maintenance Manual RX4770 M6