12(42)
Datum/Date
Rev
Dokumentnr/Documentnr
Uppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved
Kontr/Checked
Tillhör/Referens-File/Reference
1999-07-15
F
1545-ASB 150 02 Uen
FAULT TRACING DESCRIPTION
Faktaansvarig - Subject responsible
2.2.3
LEDs on other Boards
LED
Condition
Correction
LEDs in
connection
field 2
(upper
part)
red
RP disconnects PCM
bus and signalling
interface from back
plane
This can occur if the CP on the CPU is restarted or a board failure is
detected by the RP. Check if it concerns just one or more board(s). A
watchdog reset on the board could cause a board restart. System
supervision will invoke a system restart if major faults occur. If LED is
continuously ON check if the yellow and green LEDs flash, otherwise
the RP is not working.
yellow This LED indicates if
the board is in start-up
procedure or if the
board (individual) is
blocked.
This condition is normal for a start-up sequence indicating initialisation
or running self test. If this LED is ON during operation, this indicates
blocking of one or more individual(s). The proper action is to check the
wiring and if the connected equipment is operational (check it’s alarm
indication).
green Individual is active
This indicates normal system operation and at least one e.g. extension
(individual) is active on the board.
LEDs in
connection
field 2
(lower
part)
yellow Register is blocked
This indicates that the register function on the board is blocked e.g. on
BTU-D or VMU-HD.
green Register is active
This indicates normal system operation. This register function is active
on the board e.g. on BTU-D or VMU-HD.
