Lucent Technologies Galaxy Power System 4848/100
13 - 6  Troubleshooting SCF Systems   Issue 5  June 2000
CTLR Alarm LED  
Table 13-C: Controller Alarms
(See Figures 12-2 and 12-3)
Controller 
LED
Controller 
Alarm 
Status
SCF Controller 
Display
Other 
Indication(s)
Possible 
Problem(s)
Possible Solution(s)
CTLR MAJ Controller Fail -- •BJA failure→
•BJB failure
•BJC rectifier 
interface board 
failure
•Display failure
•BJJ failure
•BJH failure
•Intelligent 
option board 
failure
Check BJA power board to see if the 
green and yellow LEDs are lit. If so, 
one of the supply voltages is out of 
range; perform the following steps:
1. Use the test jacks on the front of 
the BJA board to verify the 
following voltage levels:
+5V: 4.75V-5.25V
+15V: 14.25V-15.75V
 -15V: 14.25V-15.75V
2. If any voltage is too high, replace 
the BJA board.
3. If any voltage is too low, either the 
power board is faulty or one of the 
other basic controller boards is 
overloading the power supply. 
Remove the other basic controller 
boards one at a time; if the voltage 
rises back into range, replace the 
faulty board. If the voltage 
remains low, replace the power 
board.
4. If the problem remains, call your 
local RTAC representative.