NEC NEAX 2000IVS2, Maintenance Manual

Page: 121 / 156

CHAPTER 2 TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
NEAX2000 IVS
2
Maintenance Manual
ND-70926 (E), Issue 3.0
Page 113
PN-SC01
(DCH) RUN lamp is not
flashing Abnormal operation
of DCH card
Confirm the programming data: CM05
Y=0.
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.
LC lamp is not on DCH D-Channel link
connection
failure Check the status of the local-office side line
or the public network side line.
PN-SC03
(ICH) RUN lamp is not
flashing Abnormal operation
of ICH card
Confirm the programming data: CM05
Y=0.
Reset the system (Push the SW1 of
MP).
Check to see if the SENSE switch is set
as per the AP Number (04-15)
assigned by CM05 Y=0.
Reset the MB switch.
(Down
→
Up
→
Down)
If the fault cannot be cleared, replace
the card.
DOPE 0-7 lamp is
not on D-Channel link is
not connected
between ICH and
ILC
Confirm the programming data: CM06.
Confirm if the corresponding ILC card
is removed.
If the fault cannot be cleared, replace
the 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
3
4
5
1
2
3