Lucent Technologies Lineage
®
2000 ECS Battery Plant H569-403
Issue 4 February 1997
Maintenance 5 - 3
Table 5-A: Troubleshooting
Observed Condition
Probable Cause
Procedure #
Controller
Red or yellow LEDs lit
No LEDs or Display lit
Meter inaccuracy
Office alarms issued
False alarms issued
Blown fuse on LVD/Fuse
board
See “Troubleshooting” in Controller Manual
Rectifier
Red or yellow LEDs lit
No LEDs or Display lit
No output/low output
Oscillation
Open output breaker
See “Troubleshooting” in Rectifier Manual
DC Distribution Subsystem
Open distribution breaker or
fuse
a. manually turned off
b. overcurrent trip
c. breaker failure
Open Distribution Breaker
or Fuse
“LVD OPEN” LED lit
a. failed LVD contactor
b. low voltage
c. faulty wiring
d. LVD circuit failure
Red “LVD OPEN” LED Lit
“LVD FAIL” LED lit
a. low voltage
b. LVD circuit failure
Yellow “LVD FAIL” LED
Lit