EMC DS-4900B Hardware Reference Manual page 49

Table 3-2
LED Name LED Color
Power Supply No light
Status
Steady green
Steady amber (for
more than 5 seconds)
Fan Status No light
Steady green
Steady amber (for
more than 5 seconds)
Nonport Side LED Patterns During Normal Operation
Status of Hardware
Power supply is not receiving power
or is off.
Power supply is operating normally.
Power supply fault for one of the
following reasons:
Power supply is switched off
The power cable is disconnected
The power supply has failed
Note: When the switch is first
powered on the power supply status
LED will show amber until POST
has completed.
Fan assembly is not receiving
power.
Fan assembly is operating normally. No action required.
Fan fault for one of the following
reasons:
One or more of the fan(s) in the fan
assembly has failed
The fan FRU was disabled by the
user
Note: When the switch is first
powered on the fan status LED will
show amber until POST has
completed.
Operating the DS-4900B
Recommended Action
Verify that the power supply is on and
seated and the power cord is connected to
a functioning power source.
No action required.
Try the following:
Check the power cable connection
Verify that the power supply is powered on
Contact your EMC Customer Service
Representative to replace the power
supply FRU.
Try the following:
Verify that the fan FRU is seated correctly
Verify that the switch is powered on
Try the following:
Verify that the fan FRU is enabled (use the
fanEnable command)
Contact your EMC Customer Service
Representative to replace the fan FRU.
Interpreting LED activity
3-7