Nortel DMS-100 Series Maintenance Manual page 591

Table 11-1 OPM alarm clearing (Sheet 2 of 3)
Alarm condition
Major
Possible cause
Defective LCM processor
Defective digroup control card
Defective power converter
Defective ringing generator (RG)
circuit
Closed DS30A message port
Line group controller (LGC) or line
trunk controller (LTC) forces activity
switch in LCM.
DMS-100 Family OPM Maintenance Manual XPM14 and up
Troubleshooting chart 11-3
Action
Identify and post the in-service trouble
(ISTb) LCM.
Identify fault indicators with
QUERYPM FLT command.
If the LCM is C-side busy (CBsy),
identify central-side (C-side) links to
host peripheral module (PM).
Post host PM for defective P-side
links.
Busy, test, and RTS the defective
P-side links.
Post, busy, test, and RTS the
defective LCM.
If the LCM is system-busy (SysB),
busy and test the defective LCM unit.
If the test fails, with a card list, replace
any defective cards. Test, and RTS
the defective LCM unit.
If the test fails, with no card list, test
the defective LCM unit and RTS the
LCM unit.
If the LCM is manual busy (ManB),
test the defective LCM unit.
If the test fails, with a card list, replace
any defective cards. Test, and RTS
the defective LCM unit.
If the test fails, with no card list, test
the defective LCM unit and RTS the
LCM unit.