CHAPTER 2 TROUBLESHOOTING
– 181 – 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-DAIB
(DAIB)
RUN lamp is not
flashing
Abnormal opera-
tion of DAIB card
Reset the MB switch.
(Down→Up→Down)
If the fault cannot be cleared,
replace the card.
LINK lamp is not
on
Layer 2 link con-
nection failure
between DAIA
and DAIB
Check to see if the cable between
DAIA and DAIB is correctly con-
nected.
Reset the MB switch.
(Down→Up→Down)
RED lamp is on PCM signal loss or
Frame Alignment
signal loss
Check to see if the cable between
DAIA and DAIB is correctly con-
nected.
Reset the MB switch of DAIA card
on the main site.
(Down→Up→Down)
RMT lamp is on Remote alarm Check to see if the cable between DAIA
and DAIB (sending side) is correctly
connected.
1
2
1
2
1
2
FAULT DIAGNOSIS AND TROUBLESHOOTING
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