Lucent Technologies 60V Small Broadband Power System J85500Q-1
8 - 4 Troubleshooting
Issue 4 October 1998
Table 8-B: BPS Trouble Conditions
Indication(s)
Possible Cause
Corrective Action
No LED is lit.
DC source not connected.
Check dc source.
No LED is lit.
BPS may not be fully
seated in shelf.
Insert BPS in shelf.
Overcurrent LED is lit.
Load may be greater than
capacity.
Decrease load.
Push unit reset button.
Alarm LED is lit.
BPS defective.
Replace BPS.
Normal LED is lit with no
output power.
Output circuit breakers
not in the ON position.
Place circuit breakers in
the ON position.
Normal LED is lit.
Circuit breaker is on.
No output power.
Defective BPS.
Replace BPS.
Normal LED is not lit and
no other LEDs on the
ACU are lit.
ACU board not fully
seated in BPS.
Insert ACU in BPS.
Normal LED is not lit and
no other LEDs on the
ACU are lit.
ACU board defective.
Replace ACU.
Battery Connect and PMJ
LEDs are lit.
One or both of the battery
cables is not connected to
the BPS.
Connect battery
interconnect cables to
BPS.
PMJ and MJF LEDs are
lit.
One or more output circuit
breakers have tripped or
are in the OFF position.
Place circuit breakers in
the ON position.
PMJ and Probe Fail LEDs
are lit.
One or more battery
temperature probes have
failed open or short.
Replace failed
temperature probe.
PMJ and Battery High
Temp LEDs are lit.
Battery temperature in
excess of 65° C.
a. Check battery string for
shorted cells.
b. Check cabinet for
proper ventilation.
PMJ and AC Fail LEDs
are lit.
Input ac source to rectifier
is off or below input
voltage range.
Check ac source to
rectifier.
