N560 series H/W Installation Guide
NexComm Systems, Inc. 20 PAGE
Troubleshooting N560 series
When you have problems with N560 series, this troubleshooting section can be referred to. If you have
difficulty in fixing it or the trouble is beyond this document, you may request a Technical Assistance to
our technical support team. (see appendix B for Technical Assistance)
Table 5-2 provides troubleshooting procedures, and Figure 5-1 describes status LEDs.
< Figure 5-1 > Description of Status LEDs
Condition
Solution
Power LED
( OFF or Yellow )
①
-1 Verify that the DC adaptor’s cable plug is connected to an operational
power source (+100 ~ +240V AC).
①
-2 Verify that that DC adaptor is operational
Console connection
disable
①
Verify that the console cable’s DB-9 connector and RJ-45 jack is plugged
firmly.
②
Verify that communication options are correctly set.
( refer to section 5 )
2BASE-TL Port’s LEDs
OFF with no blinking
In normal operation (a pair of devices, one set as CO, the other set as RT),
2BASE-TL LED will be off if there is no copper pair connected to the port
(or if a copper pair is connected at the port but is not terminated at an
operational remote device)
1. Verify that the remote device is operational and the mode is set as different
mode from the device itself.
2. Verify that copper pairs are wired correctly in the copper pair. (refer to
Figure 2-4 )
2BASE-TL Port’s LED
blinking but not entering
ON state
1. Verify that the line state is normal (state, such as distance). If the distance
of the line is too long to sync, it may fail to link up.
