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If you find any problem, please take the following steps to check.
LED indicators
The power LED (POWER) is not lit.
Is the power cord connected?
Please confirm that the power cord is securely connected to the power port.
The Link/Transmission 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 switch or the terminal to half-duplex mode.
Communications fail.
Communications with all ports are down 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.
Isn't the bandwidth usage rate of the backbone network to which this switch is connected excessively
high, or a loop occurring?
Try separating this switch from the backbone network.
PoE power supply is impossible (PoE supporting models only)
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 IEEE 802.3af standard?
