5 FAQs
34
5 FAQs
Q:
All indicator LEDs are extinguished after power-on.
A:
1.
Check whether the power cable is correctly connected;
2.
Check whether the power switch on the equipment’s rear panel
is in the ON position.
Q:
The equipment fails to work.
A:
1.
If the equipment works abnormally, check whether the power is
connected normally or the voltage is not within specifications;
2. If the equipment is overheated, check the ventilation. Make
sure the equipment is not exposed to direct sunshine or is near
the heat source.
Q:
The LOS indicator LED blinks.
A:
1.
Check the received optical power levels with an optical power
meter. Excessively low receive optical power may indicate the
fiber is faulty;
2. Check whether the optical fiber is connected normally to the
appropriate interface;
3. Check whether the Rx optical power of the ONU crosses the
normal optical power range (overlow or overhigh);
4.
Check whether the ONU module is aged or damaged;
5. Check whether the equipment at the central office end is
operating normally.
Q:
The LAN indicator LED is extinguished.
A:
1. Check if the network cable is damaged or incorrectly
connected;
2.
Check if the wiring color-coding scheme of the network cable is
incorrect. If incorrect, replace the original network cable with a
standard CAT-5 twisted-pair network cable.
3.
Check if the network cable crosses the allowed range.
