User's Manual

CHAPTER 5 NDA-24300
Page 324
Issue 1
FAULT REPAIR PROCEDURES
2.3 Trunk (ORT, SND, CFT) Fault
Note:
If a circuit card is replaced because only one line is faulty, no
other lines in that circuit card can be used until the replace-
ment is complete.
When only one line is faulty Place the faulty line into make-busy state.
For ORT/SND, set MB switch of
each circuit to ON position.
For CFT, place it into make-busy
state using command MBTK.
Replace the circuit card with spare. Set MB switch UP and extract the circuit card
from its mounting slot.
Set MB switch of the new circuit card UP and
insert the circuit card into its mounting slot.
Set MB switch DOWN.
If the line is under make-busy state, cancel it.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
START
END