NEC NEAX 2000 IPS Maintenance Manual page 203

CARD NAME
PN-24PRTA RUN lamp is not
(PRT) flashing
LC lamp is not on ISDN Primary
CRC lamp is on
PCM lamp is on
FRM lamp is on
RMT lamp is on
AIS lamp is on
Remedial Action on Each Lamp Status
LAMP FAULT
STATUS CONTENT
Abnormal opera-
tion of PRT card
Rate D-channel
data link connec-
tion failure
Bit Error Rate
exceeds the prede-
termined value
No PCM signals
arrive from the
distant office
Frame Alignment
signals from the
distant office can
not be received
Frame Alignment
signals cannot be
sent to the remote
PBX
Remote PBX is in
local loopback
state
CHAPTER 2 TROUBLESHOOTING
FAULT DIAGNOSIS AND TROUBLESHOOTING
REMEDIAL ACTION
Confirm the programming data:
1
CM05 Y=0/Y=1, CM07 Y=01.
Check to see if the SENSE switch is
2
set as per the AP Number (04-15,
20-31) assigned by CM05 Y=0.
Reset the MB switch.
3
(Down Up Down)
If the fault cannot be cleared,
4
replace the card.
Check the status of the local office line
or public network line.
Check the receive line and external
1
equipment.
Replace the remote PRT card.
2
Check to see if the PRT cable is cor-
1
rectly connected.
Plug and unplug the PRT card.
2
Repeat this two or three times.
Check the receive line and external
1
equipment.
Replace the remote PRT card.
2
Check the transmission line and
1
external equipment.
Replace the PRT card.
2
Check the switch settings of the remote
PRT card.
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NWA-008847-001 Rev.3.0
a6ch2001.fm