Korenix JetNet 3705, User Manual

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Korenix JetNet 3705 Series Industrial PoE Switch User’s Manual 3-5
LED Indicators
JetNets can also be visually monitored via its own front-panel LED indicators. This can be useful
to assist in identifying common problems and to help you find possible solutions.
Check the redundant PWR1 and PWR2 LED’s to verify DC power. The PWR LED will light for
any connected power (PWR1, PWR2, or DC-IN).
Check PWR for power via an AC adapter connected to DC-IN. If the power LED indicator does
not light when the power cord is plugged in, you might have a problem with the power outlet, or
the power cord. If the switch simply powers OFF on its own after running for a period of time,
check for loose power connections, power losses, or surges at the power outlet. You should also
verify that your supply voltage remains within the required DC 48V while under load.
Refer to the port Link LED (LNK) to verify that a connection has been properly established (solid
green). A blinking green LNK LED indicates communication activity. If the LNK LED remains off
after making a connection, then no device has been detected and the cable may be bad or the
connected device may be un-powered.
Refer to the PoE LED (Green) to monitor for delivering power. A green on PoE LED indicates
that DC 48V is on feeding to the PD from JetNet3705 or JetNet3705f.
This LED will be solid ON
during on the power feeding. If the PD request power exceeds the 12.95 Watts or the cable loose,
short, the LED will turn off and stop feeding power to the PD. To avoid those wrong situations, be
sure the PD power consumption is below 12.95 Watts and the cable is without any failure before
install the PD.