Nortel DMS-100 Series Maintenance Manual page 606

11-2 Troubleshooting chart
RLCM alarm clearing
Alarm condition
Major
297–8351–550 Standard 04.01 August 1999
(continued)
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.
—continued—
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 again 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 again and
RTS the LCM unit.