NEC NEAX 2000 IVS2 Maintenance Manual page 119

Table 2-6 Remedial Action on Each Lamp Status (Continued)
CARD NAME
PN-30PRTA (PRT) RUN lamp is not
flashing
LC lamp is not on
PCM lamp is on
FRM lamp is on
MFRM lamp is on
RMT lamp is on
MRMT lamp is on
AIS lamp is on
2
NEAX2000 IVS Maintenance Manual
ND-70926 (E), Issue 3.0
LAMP STATUS
Abnormal operation
of PRT card
ISDN Primary Rate
D-Channel data link
connection failure
No PCM signals
arrive from the
distant office
Frame Alignment
signals from the
distant office cannot
be received
Multi-Frame
Alignment signals
from the distant
office cannot be
received
Frame Alignment
signals cannot be
sent to the remote
PBX
Multi-Frame
Alignment signals
cannot be sent to
the remote PBX
Remote PBX is in
local loop-back
state
CHAPTER 2 TROUBLESHOOTING
FAULT
CONTENT
1
Confirm the programming data: CM05
Y=0/Y=1, CM07 Y=1.
2
Check to see if the SENSE switch is set
as per the AP Number (04-15, 20-31)
assigned by CM05 Y=0.
3
Reset the MB switch.
(Down→Up→Down)
4
If the fault cannot be cleared, replace
the card.
Check the local office line or public network
line.
1
Check to see if the line is correctly
connected to the PRT card.
2
Plug and unplug the PRT card.
Repeat this two or three times.
1
Check the receive line and external
equipment.
2
Replace the remote PRT card.
1
Check the receive line and external
equipment.
2
Replace the remote PRT card.
1
Check the transmission line and
external equipment.
2
Replace the PRT card.
1
Confirm the switch setting on the PRT
card indicating an alarm.
2
Replace the PRT card not indicating an
alarm, with a spare.
Check the switch settings of the remote
PRT card.
Fault Diagnosis and Troubleshooting
REMEDIAL ACTION
Page 111