Lucent Technologies Galaxy Power System 4812
Issue 5 June 2000
Troubleshooting Vector Systems 14 - 3
AC Alarm LED
Table 14-A: AC Alarms
(See Figure 12-8)
Controller
LED
Controller
Alarm
Status
Vector
Controller Display
Other
Indication(s)
Possible
Problem(s)
Possible Solution(s)
AC
MAJ
nACF
ACF on
rectifier
display
Rectifier(s) not
receiving ac
power:
•AC input circuit
breaker has
operated.
•AC input
voltage is out of
range.
•Internal rectifier
failure
1. Verify that ac circuit
breaker is closed; close
circuit breaker if
operated.
2. If the problem is not
corrected, replace the
rectifier(s).
AC
MIN
ACF
ACF on
rectifier
display
Rectifier not
receiving ac
power:
•AC input circuit
breaker has
operated.
•AC input
voltage is out of
range.
•Internal rectifier
failure
1. Verify that ac circuit
breaker is closed; close
circuit breaker if
operated.
2. If the problem is not
corrected, replace the
rectifier.
AC
MIN
ACF
PF on
rectifier
display
Phase failure:
•Rectifier high
voltage
shutdown
•External phase
imbalance or
failure
•Internal rectifier
failure
1. Toggle the ON/STBY
switch into the STBY
position and then back
into the ON position.
2. If the problem is not
corrected, replace the
rectifier.
