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 without powering down the system.
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 (there are different power supply Part Numbers to indicate the different airflow types).
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 Air Flow.
To extract a power supply unit:
Remove the power cord from the power supply unit.
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.
Remove the power supply unit.
To insert a power supply unit:
Make sure the mating connector of the new unit is free of any dirt and/or obstacles.Important
Do not attempt to insert a power supply unit with a power cord connected to it.
Make sure that the board connector is located on the right (looking from the system's rear side forward), and insert the unit by sliding it into the opening, until a slight resistance is felt.
Continue pressing the power supply unit until it seats completely. The latch will snap into place, confirming the proper installation.
Insert the power cord into the supply connector.
Insert the other end of the power cord into the AC outlet/PDU of the correct voltage.Important
The green power supply unit indicator should light. If it does not, repeat the whole procedure to extract the power supply unit and re-insert it.
The system has 3+1 fan module redundancy. Full operation is possible with 3 fans only.
Make sure that the fans configuration matches the model number. Operation with incorrect fan configuration can cause over-temperature/temperature shutdown in certain scenarios. For power supply unit air flow direction, refer to Air Flow.
In case the system is operated at 35°C ambient temperature at full capacity with all ports occupied, and one of the system fans becomes faulty, it is recommended to replace the fan as soon as possible to avoid the risk of having no fan redundancy.
To remove a fan unit:
When replacing a faulty fan unit in an operational switch system, do not leave the slot unpopulated for more than 60 seconds.
Grasping the handle and pull the unit outward. As the fan unit unseats, the fan unit status LEDs will turn off.
Remove the fan unit.
SN5400/SN5600C Fan Module Latches
SN5400/SN5600C Fan Module Pulled Out
To insert a fan unit:
Make sure the mating connector of the new unit is free of any dirt and/or obstacles.
Insert the fan unit by sliding it into the opening until slight resistance is felt. Continue pressing the fan unit until it seats completely.Important
Upon first installation, the green Fan Status LED should light. If not, extract the fan unit and reinsert it. After two unsuccessful attempts to install the fan unit, power off the system before attempting any system debug.