NEC NEAX 2000 IPS Maintenance Manual page 226

(2) On Incoming Call
START
C.O. Incoming Call is not termi-
nated to ATTCON Station, DIT
or TAS Buzzer.
"BL" Lamp on the trunk
card is not turned on.
The "BL" Lamp is
turned on.
A
CHAPTER 2 TROUBLESHOOTING
FAULT DIAGNOSIS AND TROUBLESHOOTING
(1) Disconnect the trunk from the line
CHECK
on the MDF.
(2) Connect a test telephone set to the
line on the MDF.
ATTCON
(3) If the telephone rings, check for
trouble with wiring on the MDF and
the trunk card.
(4) If not, there is a problem with the
distant office or the line.
(1) Trunk card
REPLACE
(1) System Data Programming for the
CHECK
trunk
• In case of Termination to DIT sta-
tion: CM30 Y=02, 03, 04, 05, 13,
14, 17, CM35 Y=09
• In case of Termination to TAS
Buzzer: CM30 Y=02, 03
– 216 –
MDF
TRUNK
To C.O. Line
Test Telephone Set
NWA-008847-001 Rev.3.0
a6ch2001.fm