NEC NDA-24300 manual Trunk ORT, SND, CFT Fault, Start

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.

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

START

When only one line is faulty

Replace the circuit card with spare.

END

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.

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.

CHAPTER 5 NDA-24300

Page 324

Issue 1