User's Manual

CHAPTER 5 NDA-24300
Page 352
Issue 1
FAULT REPAIR PROCEDURES
When the PLO (PH-CK16/17) circuit card
is mounted for digital interface, replace
the PLO circuit card with a spare and
check it.
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.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
A
END