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Chapter 3: Maintenance and Component Installation
5019C-MR Power Supplies
The 5019C-MR has redundant (dual) high-efficiency power supplies, which are auto-switching
capable., enabling them to automatically sense and operate with a 100V to 240V input voltage.
If either of the two power supply modules fail, the other module will take the full load and
allow the system to continue operation without interruption. The Power Fail LED will illuminate
and remain on until the failed unit has been replaced.
Replacement units can be ordered directly from Supermicro. The power supply units have
a hot-swap capability, meaning you can replace the failed unit without powering down the
system.
Removing the Power Supply
You don't need to remove power with the redundant power feature.
1. Remove the AC power cord from the failed power supply module.
2. Release the retention screws that secure the chassis to the rack, then grasp the two
handles on either side and pull the system straight out until it locks (you will hear a
"click").
3. Next, remove the top chassis cover as described in Section 3.2.
4. To remove the failed power unit, press and hold the red tab then pull the power supply
out from the back of the chassis.
5. Replace the failed unit with another unit of the same wattage. You should replace it with
the exact same power supply (same model number).
6. Carefully insert the new unit into position in the chassis and secure it by locking the red
tab.
7. Finish by reconnecting the power cord to the new power module.
