SICOM6000 User’s Manual
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switch, then re‐install, check if LED status are normal. If yes, tighten the screws up. If no, the main
control module need to be replaced.
６
.
Fiber port couldn’t LINK
Solutions:
Please check if the fiber connectors are fastened well. If no, please reconnect and check if the fiber
connectors are clean. It can be confirmed by unused ports in the same module.
７
.
No communication in serial ports
Solutions:
z
Please check if serial ports connection are reliable
z
Please check if serial port cables are in good condition. Connect serial cable with PC, use wires
to short circuit pin 1, 2 in the plug of serial cable; send data in PC serial port program at will
and check if they are received by PC. If they are received, it proved that PC and serial cable are
in good condition. If not, it means something wrong with serial cable or PC, so you need to
check them one by one.
８
.
Packet loss in copper ports
Solutions:
z
The switches have been strictly tested before they are dispatched from the factory, so the
probability of packet loss is little. But if packet loss happen, please check if the connection for
copper ports are reliable. If it is reliable and packet loss still exist, please plug the cable to
other ports for comparison to ensure what went wrong. Don’t start up the switch hastily.
９
.
Packet loss in fiber ports
Solutions:
z
The switches have been strictly tested before they are dispatched from the factory, so the
probability of packet loss is little. But if packet loss happen, please check if the connection for
fiber ports are reliable. Check the optical power and receiving sensitivity. Optical power
decays as 0.2dB/km.
z
Check if fiber cables are qualified. Optical power decays as 0.2dB/km.
