Note: Ther
e ar
e no eld-serviceable parts in the PSU. If a PSU unit fails for
any reason, replace it. See
Replacing a power supply unit (on page 77) for
information about r
eplacing a po
wer supply.
Table 17 DC power status LED (green)
Status Meaning
Green DC output operating normally
O DC output not operating
If the DC Power status LED is o, unplug the power cable, wait 10 seconds, then
r
econnect the cable. If the DC Po
wer Status LED remains o, the PSU has failed and must
be replaced.
Table 18 PSU status LED (amber)
Status Meaning
O 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 r
emains o, the PSU has failed and must be r
eplaced. See
Replacing a power supply unit (on page 77) for mor
e information on replacing a PSU.
T
able 19 AC power status LED (green/amber)
Status Meaning
Green Receiving AC power and operating normally
O 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
po
wer
ed from its mains inlet. Two power feeds are required for the system. PSU units do
not have an on/o switch. To turn on power, simply connect the power cable. To turn o
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-r
esponsive, see
Restarting an unresponsive
server (on page 82) . Do not pull the po
wer cor
d.
Power supply units
Chapter 4: Hitachi NAS Platform server components
Hitachi NAS Platform and Hitachi Unied Storage Series 4000 Hardware Reference 58
To Next Page
Loading...
