CHAPTER 2 TROUBLESHOOTING
– 182 – 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-DAIC
(DAIC)
RUN lamp is not
flashing
Abnormal opera-
tion of DAIC 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)
Check to see if the cable between
DAIC cards is correctly connected.
RED lamp is on PCM signal loss or
Frame Alignment
signal loss
Check to see if the cable between DAIC
cards is correctly connected.
RMT lamp is on Remote alarm Check to see if the cable between DAIC
cards (sending side) is correctly con-
nected.
1
2
1
2
3
FAULT DIAGNOSIS AND TROUBLESHOOTING
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