NEC NEAX 2000 IVS2 Maintenance Manual page 113

Table 2-6 Remedial Action on Each Lamp Status (Continued)
CARD NAME
PN-30DTC-A (DTI) RUN lamp is not
flashing
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 DTI card
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
from the distant
office cannot be
received
Remote PBX is in
local loop-back
state
CHAPTER 2 TROUBLESHOOTING
FAULT
CONTENT
1
Confirm the programming data: CM05
Y=0, CM07 YY=01.
2
Check to see if the SENS 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.
1
Check to see if the line is correctly
connected to the DTI card.
2
Plug and unplug the DTI card.
Repeat this two or three times.
1
Check the receive line and external
equipment.
2
Replace the DTI card.
1
Check the receive line and external
equipment.
2
Replace the DTI card.
1
Check
external equipment.
2
Replace the DTI card.
1
Confirm the switch setting on the DTI
board indicating an alarm.
2
Replace the DTI card not indicating an
alarm, with a spare.
Check the switch settings of the remote DTI
card.
Fault Diagnosis and Troubleshooting
REMEDIAL ACTION
the transmission line and
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