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168 Appendix A
LED codes
Power on detected errors
08-11 48V error
NPSUL failure
PWRUP=0-9
1. Error occurs when 48 volt
distribution falls below 42
volts during powerup state
displayed. Powerup state
indicates which loads are
being turned on.
2. Excessive load on 48 volts due
to an inadequate number of
functioning 48 volt supplies
or overload condition on 48V
bus.
3. Possible node power supply
(NPS) upper left failure.
Call the Response Center.
12-1B 48V error
NPSUR
failure
PWRUP=0-9
1. Error occurs when 48 volt
distribution falls below 42
volts during powerup state
displayed. Powerup state
indicates which loads are
being turned on.
2. Excessive load on 48 volts due
to an inadequate number of
functioning 48 volt supplies
or overload condition on 48V
bus.
3. Possible node power supply
(NPS) upper right failure.
Call the Response Center.
LED Fault Symptoms Corrective action