Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 Troubleshooting 8 - 1
8 Troubleshooting
Introduction Many of the troubleshooting procedures described in this Section
require removing or replacing circuit packs. Review “Circuit Pack
Addition, Removal and Replacement” in Section 3 before proceeding.
Basic
Controller
Circuit Packs
BJB
Microprocessor
Board
After power up, or after a reset, the green and amber LEDs will both be
lit while self diagnostics are in progress (which will take about 10
seconds). If all diagnostics pass, the amber LED will extinguish and the
green LED will remain lit. If failures are detected during diagnostics the
green LED will extinguish, and the amber LED will remain lit. During
normal operation if a failure occurs the green LED will extinguish and
the amber LED will light. When a failure occurs, perform the following
steps:
1. Press the reset switch on the front of the BJB circuit pack. If all
diagnostics pass, it is possible that some type of “one time”
abnormality occurred to cause the failure, such as hot-insertion of
option boards, shorting backplane pins when installing optional
equipment, etc. If the diagnostics did not pass, or if the problem
reoccurs, go to the next step.
2. Replace the BJB circuit pack and verify the failure is resolved. If
the problem remains, put the original BJB circuit pack back in the
controller and go to the next step.
3. Remove all BJC rectifier interface boards, and the BJE alarm
relay/display board and press the reset switch on the BJB. If the
problem is still present, replace the BJA power board. If the
problem is resolved insert all boards which were removed, reset
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