Power Supplies - Nvidia Spectrum-3 SN4000 Series Hardware User Manual

Power Supplies

NVIDIA systems that are equipped with two replaceable power supply units work in a redundant
configuration. Either unit may be extracted without bringing down the system.

Make sure that the power supply unit that you are NOT replacing is showing green for the
power supply unit LED.

Power supply units have directional air flows similar to the fan module. The fan module
airflow must coincide with the airflow of all of the power supply units. If the power supply
unit airflow direction is different from the fan module airflow direction, the system's
internal temperature will be affected. For power supply unit air flow direction, refer to
Flow.
To extract a power supply unit:
1. Remove the power cord from the power supply unit.
2. Grasping the handle with your hand, push the latch release with your thumb while pulling the
handle outward. As the power supply unit unseats, the power supply unit status LEDs will turn
off.
3. Remove the power supply unit.
PS Unit Pulled Out
*Illustration only. The design may vary in different systems.
To insert a power supply unit:
1. Make sure the mating connector of the new unit is free of any dirt and/or obstacles.

Do not attempt to insert a power supply unit with a power cord connected to it.
Air
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