NEC NEAX 2000 IPS - Page 204

CHAPTER 2 TROUBLESHOOTING
– 194 – NWA-008847-001 Rev.3.0
a6ch2001.fm
Remedial Action on Each Lamp Status
Continued on next page
CARD NAME
LAMP
STATUS
FAULT
CONTENT
REMEDIAL ACTION
PN-30PRTA
(PRT)
RUN lamp is not
flashing
Abnormal opera-
tion of PRT card
Confirm the programming data:
CM05 Y=0/Y=1, CM07 Y=1.
Check to see if the SENSE switch is
set as per the AP Number (04-15,
20-31) assigned by CM05 Y=0.
Reset the MB switch.
(Down Up Down)
If the fault cannot be cleared,
replace the card.
LC lamp is not on ISDN Primary
Rate D-channel
data link connec-
tion failure
Check the local office line or public net-
work line.
PCM lamp is on No PCM signals
arrive from the
distant office
Check to see if the line is correctly
connected to the PRT card.
Plug and unplug the PRT card.
Repeat this two or three times.
FRM lamp is on Frame Alignment
signals from the
distant office can
not be received
Check the receive line and external
equipment.
Replace the remote PRT card.
MFRM lamp is on Multi-Frame
Alignment signals
from the distant
office cannot be
received
Check the receive line and external
equipment.
Replace the remote PRT card.
RMT lamp is on Frame Alignment
signals cannot be
sent to the remote
PBX
Check the transmission line and
external equipment.
Replace the PRT card.
MRMT lamp is on Multi-Frame
Alignment signals
cannot be sent to
the remote PBX
Confirm the switch setting on the
PRT card indicating an alarm.
Replace the PRT card not indicating
an alarm, with a spare.
AIS lamp is on Remote PBX is in
local loopback
state
Check the switch settings of the remote
PRT card.
1
2
3
4
1
2
1
2
1
2
1
2
1
2
FAULT DIAGNOSIS AND TROUBLESHOOTING