FAULT REPAIR PROCEDURES

A

When the PLO (PH-CK16/17) circuit card is mounted for digital interface, replace the PLO circuit card with a spare and check it.

END

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

Set MB switch of the PLO circuit card to UP side.

Confirm ACT lamp on the PLO circuit card goes out.

Extract PLO circuit card from its mounting slot.

Set MB switch UP and insert the new PLO circuit card into its mounting slot.

Set MB switch DOWN.

Confirm the ACT lamp on the new PLO circuit card illuminates.

Confirm that speech can be carried out normally by a station-to-station call.

CHAPTER 5

NDA-24300

Page 352

Issue 1

Page 379
Image 379
NEC NDA-24300 manual End