Hitachi 3080 G2, Hardware Reference Manual

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Note: There are no field-serviceable parts in the PSU. If a PSU unit fails for
any reason, replace it. See Replacing a power supply unit on page 71 for
information about replacing a power supply.
Table 5-14 DC power status LED (green)
Status Meaning
Green DC output operating normally
Off DC output not operating
If the DC Power status LED is off, unplug the power cable, wait 10 seconds,
then reconnect the cable. If the DC Power Status LED remains off, the PSU
has failed and must be replaced.
Table 5-15 PSU status LED (amber)
Status Meaning
Off PSU operating normally
Amber PSU internal failure (over temperature, fan, or internal component)
If the PSU status LED is on, unplug the power cable, wait 10 minutes, then
reconnect the cable. If the PSU Status LED remains off, the PSU has failed
and must be replaced. See
Replacing a power supply unit on page 71 for
more information on replacing a PSU.
Table 5-16 AC power status LED (green/amber)
Status Meaning
Green Receiving AC power and operating normally
Off Not receiving AC power (check mains and power cable connections)
Mains power connections are an IEC inlet in each power supply. Each PSU is
only powered from its mains inlet. Two power feeds are required for the
system. PSU units do not have an on/off switch. To turn on power, simply
connect the power cable. To turn off the unit, remove the power cable.
When both PSUs are installed, if only one PSU is connected and receiving
adequate power, the fans on both PSUs will operate, but only the PSU
receiving power will provide power to the server.
Each power supply auto-ranges over an input range of 100V to 240V AC, 50
Hz to 60 Hz.
Caution: If the server is non-responsive, see Restarting an unresponsive
server on page 83 . Do not pull the power cord.
Hitachi NAS Platform server components 55
Hitachi NAS Platform 3080/3090 G2 Hardware Reference Guide