Nortel DMS 100 Series Maintenance Manual page 228

6-76 RSC-M card replacement procedures
NTMX79
in an RSC-M
(end)
15
16
17
18
19
20
21
22
23
24
25
297-8223-550 Standard 04.02 November 2000
a Make sure that insertion of the NTMX79 circuit card is correct..
b Set the POWER switch to the ON position.
To determine the circuit breaker that controls the NTMX79 circuit card that
you replace, observe the MSP. Note the circuit breaker that trips.
Press and hold the circuit breaker on the MSP to the ON position. When the
circuit breaker is ON, place the power switch on the NTMX79 circuit card to
the RESET position. The CONVERTER FAIL LED on the NTMX79 circuit
card, and the FRAME FAIL lamp on the MSP are ON.
To determine where to proceed next in this procedure, use the following
information.
If you
entered this procedure from alarm clearing proce-
dures
entered this procedure from other
Remove the sign from the active unit. Return to the procedure that directed
you to this procedure. At the point where the system produced a defective
card list, identify the next defective card on the list. Go to the correct card
replacement procedure for that card in this manual.
To return the inactive RCO2 unit to service, type
>RTS UNIT unit_no
and press the Enter key.
where
unit_no
is the number of the inactive unit
Use the following information to determine where to proceed.
If RTS
passed
failed
Remove the sign from the active unit.
Go to the common returning a card procedure in this document.
This procedure is complete.
For additional help to replace this card, contact operating company
maintenance personnel.
For additional help with switch of activity, contact the next level of support.
Note: If the system recommends the use of the SWACT command with
the FORCE option, consult office personnel. Office personnel can advise
you to not use the FORCE option.
Do
step 18
step 19
Do
step 21
step 24