Fujitsu PRIMERGY RX1330 M5 Upgrade And Maintenance Manual page 237

Figure 179: Latching the socket release lever
▶ Latch the socket release lever under the load plate tab.
Applying thermal paste to the CPU surface
For Japan, the service engineer must follow the instruction provided
separately.
If the CPU upgrade or replacement kit contains a new heat sink, a thin
layer of thermal compound has already been pre-applied to its lower
surface. In this case, it isn't necessary to apply thermal paste to the
CPU surface.
RX1330 M5 Upgrade and Maintenance Manual
Processor (CPU)
237