User's Manual

NDA-24300 CHAPTER 5
Page 339
Issue 1
FAULT REPAIR PROCEDURES
Check the line/trunk circuit cards mounted
in the unit to see if they are faulty.
Perform this check on an individual basis.
Set the MB switch of the line/trunk circuit
card UP and extract it from its mounting slot.
Make a station-to-station call and see if a fault
occurs.
If the fault has stopped, the
circuit card extracted at that time
is faulty. Replace the circuit card
with a spare.
If the fault continues, check the
next circuit card.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
A
END