NEC NEAX 2000 IVS2 Maintenance Manual page 114

CHAPTER 2 TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
Table 2-6 Remedial Action on Each Lamp Status (Continued)
CARD NAME
PN-30DTC-C (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
Page 106
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
cannot be sent to
the remote PBX
Remote PBX is in
local loop-back
state
FAULT
CONTENT
1
Confirm the programming data: CM05
Y=0/Y=1, CM07 YY=01.
2
Check to see if the SENSE 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
card indicating an alarm.
2
Replace DTI card not indicating an
alarm, with a spare.
Check the switch settings of the remote DTI
card.
REMEDIAL ACTION
the transmission line
2
NEAX2000 IVS Maintenance Manual
ND-70926 (E), Issue 3.0
and