CHAPTER 2 TROUBLESHOOTING
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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-DTA
(CCT/DTI/PRT)
NOTE
RUN lamp is not
flashing
Abnormal opera-
tion of CCT/DTI/
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.
LPB lamp is not
on
No LPB signals
arrive from the
distant office
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 CCT/DTI/PRT
card.
Plug and unplug the CCT/DTI/PRT
card.
Repeat this two or three times.
MFRM lamp is on Multi-Frame
Alignment signals
from the distant
office cannot be
received
Check the receive line and external
equipment.
Replace the CCT/DTI/PRT card.
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 CCT/DTI/PRT
card.
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JULY/01/2006
FAULT DIAGNOSIS AND TROUBLESHOOTING
Содержание UNIVERGE NEAX 2000 IPS
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