Version: A
4-1
4 FAQs
Q: All indicator LEDs are off after power-on.
A:
1) Check whether the power connection cable is connected well.
2) Check whether the power switch on the front panel of device is on.
Q: The device fails to work after a period of normal running.
A:
1) If the device works abnormally, check whether the power is
connected normally or the voltage is over high or over low.
2) The device has over-heat fault. Check whether the ventilation is
normal and check whether there is direct sunshine or heat
source around.
Q: LOS indicator LED is on.
A:
1) The optical fiber is faulty. Check whether the optical fiber is
connected normally and whether it is connected to correct
interface.
2) The upstream equipment is faulty.
3)
The
optical power is out of the normal range (such as overload).
