Table 37. Power supply-fan LEDs
LED Color Normal Status Problem Status Procedure
Power Green LED On = Power
supply-fan is
providing power
Off = Power
supply-fan is not
providing power
Examine the power supply
and fan unit, connected
PDUs, and connected
power circuits for any of the
following conditions:
v The power supply and
fan unit power switch is
off.
v A circuit breaker has
tripped in the controller
linked to this power
supply and fan unit is
linked. (The right power
supply and fan unit is
linked to controller A; the
left power supply and fan
unit is linked to controller
B.)
v The connected PDUs are
turned off or have been
tripped.
v There is no power at the
wall circuit.
v The power supply and
fan unit is bad.
Battery 1
Charging
Green LED On = Battery
charged and
ready
Blinking =
Battery charging
Off = Battery
faulted,
discharged, or
missing
Power LED
Battery 1 charging LED
Battery 2 charging LED
Needs Attention LED
Service Action
Allowed LED
Power LED
Battery 1 charging LED
Needs Attention LED
Service Action
Allowed LED
Battery 2 charging LED
Right power supply-fan unit
Left power supply-fan unit
ds48043
Figure 77. Power supply-fan LEDs
126 IBM System Storage DS4800 Storage Subsystem: Installation, User’s, and Maintenance Guide
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