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AS1011M-Ni User's Manual
6-5
Power Supply
The 1011M-Ni has a single 280 watt power supply, which is auto-switching capable.
This enables it to automatically sense and operate with a 100V to 240V input volt-
age. A power on/off switch is included on the back of the unit. This switch should be
turned to the off position before removing the power cord when replacing the unit.
Power Supply Failure
If the power supply unit fails, the system will shut down and you will need to replace
the power supply unit. Replacement units can be ordered directly from Supermicro
(Supermicro part number PWS-281-1H). As there is only one power supply unit in
the 1011M-Ni, the server must be powered down before removing and replacing
the power supply unit for whatever reason.
Removing/Replacing the Power Supply
1. Removing the power supply
First turn the power switch on the control panel and the switch on the power supply
off, then unplug the power cord from the system and all peripheral devices. Remove
the chassis cover by pressing the two release buttons on the top of the chassis
(near the front) and push the chassis top rearward about one inch before lifting it
completely off. To remove the failed power unit, unplug the power cables from the
connections on the motherboard. Then, unscrew the power supply and lift it out of
the chassis.
2. Installing a new power supply
Replace the failed unit with another unit of the same input voltage, output voltage
and wattage. It is highly recommended to replace it with exactly the same model
power supply. Carefully insert the new unit into position and screw it into the chassis.
Plug the power cables back into their connectors on the motherboard. Replace the
chassis top cover and reposition the unit back into the rack. Reconnect the power
cord and turn the switch on the back of the power supply to the on position. Finish
by depressing the power button on the chassis front control panel.
6-6
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