User's Manual

CHAPTER 5 NDA-24300
Page 318
Issue 1
FAULT REPAIR PROCEDURES
1.7 D
term
Fault
Note 1:
If a circuit card is replaced because only one line
is faulty, no other lines in that circuit card can be
used until the replacement is complete.
Note 2:
If any of the in-house cable wirings short-circuit,
the POW ALM lamp on the ELC circuit card
lights. Remove the cause of the short-circuit and
initialize the ELC circuit card.
When OPE lamp on the ELC circuit card
does not illuminate
Confirm that MB switch of the ELC circuit
card is in ON position (UP).
Confirm that station data (ASDT command)
in the ELC circuit card is assigned.
Replace ELC circuit card with a spare.
When BL lamp for each line is flashing or
illuminating on the ELC circuit card
Confirm that MB switch of the ELC circuit
card is in ON position (UP).
Use MBST command to confirm that ELC
circuit card has not been placed into make-
busy state.
Check the station data (ASDT command)
assignment.
Replace the ELC circuit card with a spare.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
START
A