|
Cause for failure |
Possible reason |
Solution |
|
The power indicator lamp PWR is off. |
1. The control switch is not at the right position.
2. The polarity of connection for power is not correct.
3. The external power is not connected correctly.
4. Conductor has fallen into the chassis and resulted in the short circuit between the power and ground.
5. Power module failure |
1. The control switch is to be turned to the right position.
2. Exchange the polarity of power.
3. Plug the external power correctly.
4. Remove the conductor.
5. Contact the supplier. |
|
After connection of optical port, OPLOS and OPSYL alarm is triggered.
|
1. Optical fiber receiving and transmitting ports are connected reversely.
2. The transmission distance is beyond the specification of ordering.
3. Optical port module failure. |
1. Exchange the transmitting and receiving ports.
2. Determine the transmission distance as per specification provided for ordering.
3. Contact the supplier. |
|
LINK lamp is off |
1. Network connection line is wrong.
2. Wrong connection for the direct connection port and crossed port.
3. Ethernet module failure. |
1. Wire the connection line correctly.
2. Replace the RJ45 port, and connect the line correctly.
3. Contact the supplier. |
|
The data can go through via PING, yet there are quite some packet loss |
1. Too many HUBERs are used in the network, and there are too many PC in the network section, resulting in data packet conflict.
2. The network line is not pressed correctly or too long. |
1. Try the best to use SWITCH to replace HUBER, make sure there are not too many PC in the same conflicting section.
2. Wire the connection line again. |
|
The speed of network is low. |
Conflicting data in the network section |
Skip the equipments of this company and check if the reason is network confliction or other reasons. |
