NEC NEAX 2000 IPS Maintenance Manual page 187

CARD NAME
PN-24CCTA RUN lamp is not
(CCT) flashing
LC lamp is not on Common signaling
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 CCT card
channel data link
connection 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 local office line or public net-
work line.
Check the receive line and external
1
equipment.
Replace the remote CCT card.
2
Check to see if the line is correctly
1
connected to the CCT card.
Plug and unplug the CCT card.
2
Repeat this two or three times.
Check the receive line and external
1
equipment.
Replace the remote CCT card.
2
Check the transmission line and
1
external equipment.
Replace the CCT card.
2
Check the switch settings of the remote
CCT card.
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NWA-008847-001 Rev.3.0
a6ch2001.fm