Station Line Fault - NEC UNIVERGE SV8300 System Maintenance Manual

Station Line Fault

(1) At Calling Station
START
Side Tone cannot be heard.
Dial Tone is not returned.
The station telephone set is
DTMF type.
System does not receive any
digits dialed by the station.
After dialing the first digit, Dial
Tone is not disconnected.
At DTMF Telephone set
At any type of telephone set
END
CHECK
(1) On the MDF, connect a test telephone set to
the faulty station line.
(2) If Side Tone can be heard, check for trouble
with the cabling and telephone set.
(3) If no Side Tone, check for trouble with wir-
ing on the MDF and LC blade.
REPLACE (1) LC blade
(2) Telephone set
CHECK (1) System Data Programming for the station:
CM05 Y=0, CM10 Y=00, CM12 Y=00
CHECK
(1) "RUN" LED on the CPU blade is flashing.
REPLACE (1) CPU blade
CHECK (1) System Data Programming for the station:
CM12 Y=00
REPLACE (1) LC blade
(2) Telephone set
CHECK (1) System Data Programming for the station:
CM12 Y=00
REPLACE (1) LC blade
(2) Telephone set
2-40
Chapter 2 TROUBLESHOOTING
FAULT INFORMATION DISPLAY
NWA-033627-001 Rev.4.0
95ch2001.fm