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Appendix A 169
LED codes
Power on detected errors
1C-25 48V error
NPSLL 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) lower left failure.
Call the Response Center.
26-2F 48V error
NPSLR 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) lower right failure.
Call the Response Center.
LED Fault Symptoms Corrective action