5 Handling Common Problems
1.
Check whether the optical fiber is damaged.
2.
Check whether the optical fiber is connected to the correct
interface.
3.
Check whether the Rx optical power of the ONU is over-low
(using the optical power meter).
4.
Check whether the ONU optical module is aged or damaged.
5.
Check whether the local device is faulty.
5.4 LAN Indicator LED Remaining Off
Handle according to the procedures below.
1.
Check whether the network cable is damaged or connected
incorrectly.
2.
Check whether the color-coding scheme of the network cable is
incorrect; if so, replace it with a standard CAT-5 twisted pair
network cable.
3.
Check whether the network cable length exceeds the allowed
range (100m).
5.5 Failing to Detect ONU Using Wi-Fi
Handle according to the procedures below.
1.
Check whether the wireless function is disabled for the ONU
and whether the SSID is set to
Hidden
so that the network is
unavailable.
2.
Check whether the network card drive of the computer is
installed normally and whether the WLAN function of the
wireless terminal (such as computer and telephone) is enabled.
3.
Adjust the position of the ONU to reduce the barriers on the
wireless channel (such as walls) and make sure the distance
130