CHAPTER 2 TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
NEAX2000 IVS
2
Maintenance Manual
ND-70926 (E), Issue 3.0
Page 105
PN-30DTC-A (DTI)
RUN lamp is not
flashing
Abnormal operation
of DTI card
Confirm the programming data: CM05
Y=0, CM07 YY=01.
Check to see if the SENS 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.
PCM lamp is on
No PCM signals
arrive from the
distant office
Check to see if the line is correctly
connected to the DTI card.
Plug and unplug the DTI card.
Repeat this two or three times.
FRM lamp is on
Frame Alignment
signals from the
distant office cannot
be received
Check the receive line and external
equipment.
Replace the DTI 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 DTI card.
RMT lamp is on
Frame Alignment
signals cannot be
sent to the remote
PBX
Check the transmission line and
external equipment.
Replace the DTI card.
MRMT lamp is on
Multi-Frame
Alignment signals
from the distant
office cannot be
received
Confirm the switch setting on the DTI
board indicating an alarm.
Replace the DTI card not indicating an
alarm, with a spare.
AIS lamp is on
Remote PBX is in
local loop-back
state
Check the switch settings of the remote DTI
card.
Table 2-6 Remedial Action on Each Lamp Status (Continued)
CARD NAME
LAMP STATUS
FAULT
CONTENT
REMEDIAL ACTION
1
2
3
4
1
2
1
2
1
2
1
2
1
2
Summary of Contents for NEAX 2000IVS2
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