Troubleshooting
If you find any problem, please take the following steps to check.
LED
The POWER LED is not lit.
Check if the power cord is disconnected. Please confirm that the power cord is
securely connected to the power port.
Is the Switching Hub operated at temperature in the range from 0 to 50
℃
Ensure that the operating temperature is within the specified range.
The Port LED is not lit.
Is the cable correctly connected to the target port?
Is the cable appropriate to use?
Is the terminal connected to the relevant port conforming with 10BASE-T,
100BASE-TX, or 1000BASE-T standard?
Auto-negotiation may have failed.
Check the port settings of this Switching Hub or the terminal settings.
The SD CARD LED is not lit.
Check if the SD card is disconnected.
Ensure that the card is securely connected
Communications are slow.
Are the communication speed and mode settings correct?
If the proper communication mode signal cannot be obtained, apply
half-duplex mode.
Please reconfirm autonegotiation setting.
Is not the utilization ratio of the network to which this Switching Hub is
connected too high?
Try separating this Switching Hub from the network.
* For detailed configuration and management method, please see
the PDF version Operating Instructions in CD-ROM.
You can also downloads the latest Operating Instructions from
our website.
Check if equipment with a fixed communication mode is connected to
any ports from 17 to 20.Change the settings for ports 17 to 20 of
the Switching Hub and the opposed ports to auto negotiation or
the same communication speed in the full-duplex mode.
Check if equipment of which communication mode is set to the half-duplex mode is
connected to ports 17 to 20.
Ports 17 to 20 do not link up with equipment in the half-duplex mode.
Connect such equipment to port 1 to 16.
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