Defective Add-On Module - Nortel Meridian 1 Manual

Symptom:

Defective add-on module

The telephone can make and receive calls, but an add-on module connected
to it is not working. Look up all system messages and maintenance display
codes in the X11 system messages guide and follow the instructions given. If
the fault does not clear, use this procedure.
See Telephone and attendant console installation (553-3001-215) for
information on connecting telephones. You may need to replace one of the
following:
— Add-on module
— Data option card
— Power supply for add-on module
Possible cause
Defective power
supply for add-on
module
Defective add-on
module
Defective data
option card
Note: Continually observe and look up system messages as you perform
this procedure.
Action
If the add-on module requires a separate power supply, make sure it is
properly connected and in working order.
If there is still a problem with the telephone, go to the next possible cause.
Replace the add-on module.
If the fault is with a data add-on module, replace the data option card.
Clearing telephone faults
Meridian 1 Fault clearing
Page 171 of 190