Table 41. Power-supply unit LEDs
Power
supply
OK
ac failure
Fan
failure
dc failure
Status Action
On On On On Communication
failure between
the power
supply unit and
the enclosure
chassis
Replace the power
supply unit. If failure is
still present, replace the
enclosure chassis.
Off Off Off Off No ac power to
the enclosure.
Turn on power.
Off Off Off On The ac power is
on but power
supply unit is
not seated
correctly in the
enclosure.
Seat the power supply
unit correctly in the
enclosure.
Off On Off On No ac power to
this power
supply
1. Check that the switch
on the power supply
unit is on.
2. Check that the ac
power is on.
3. Reseat and replace
the power cable.
On Off Off Off Power supply is
on and
operational.
No actions
Off Off On Off Fan failure Replace the power
supply unit.
Off On On On Communication
failure and
power supply
problem
Replace the power
supply unit. If replacing
the power supply unit
does not fix the problem,
replace the enclosure
chassis.
Flashing X X X No canister is
operational.
Both canisters are either
off or not seated
correctly. Turn off the
switch on both power
supply units and then
turn on both switches. If
this action does not
resolve the problem,
remove both canisters
slightly and then push
the canisters back in.
Off Flashing Flashing Flashing Firmware is
downloading.
No actions. Do not
remove ac power.
Note: In this case, if
there is a battery in a
power supply unit, its
LEDs also flash.
200 Storwize V7000 Unified: Problem Determination Guide Version
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