RX900 S1 Maintenance Manual 55
Power supply
ÊPress the two plastic clips together as indicated by the arrows and remove
the dummy module.
VCAUTION!
Keep the dummy module for future use. If the power supply unit is
removed and not replaced with a new unit, the dummy module must be
reinstalled due to cooling, to comply with applicable EMC regulations
(regulations on electromagnetic compatibility), and to protect against fire.

5.1.4 Installing a power supply unit

Figure 12: Installing a power supply unit
ÊSlide the power supply unit into the empty bay until it clicks into place.
IMake sure that the power supply unit engages correctly in the
mounting location and is locked in position. This is the only way to
prevent the power supply unit from sliding out of its mountings and
being damaged during transportation.