Panasonic Switch-M12PWR, Operation Manual

Page: 236 / 240

236
Troubleshooting
If you find any problem, please take the following steps to check.

LED indicators

The power LED (PWR) is not lit.

Check if the power cord is disconnected.

Please confirm that the power cord is securely connected to the
power port.

The link/send & receive LED (LINK/ACT.) is not lit.

Is the cable correctly connected to the target port?

Is each terminal connected to the target port compliant with its
specifications?

Auto-negotiation may have failed.

Set the port of this Switching Hub or the terminal to half-duplex
mode.
◆
Communications fail.

Communications with all ports are impossible or slow.

Are the communication speed and mode settings correct?

If the communication mode signal cannot be properly obtained, apply
half-duplex mode.
Switch the communication mode of the connection target to
half-duplex mode.
Do not fix the communication mode of the connected terminal to
full-duplex mode.

Is the bandwidth usage rate of the backbone network to which this
Switching Hub is connected excessively high?

Try separating this Switching Hub from the backbone network.
◆
PoE power supply is impossible.

The PoE power supply LED (PoE) is not lit.

Is the cable appropriate to use and connected to a port that supports
PoE power supply?

Is the PoE-ready terminal connected to the port compliant with the