Upvel UP-236FEF [8/20] Troubleshooting

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UP-236FEF

Troubleshooting

The LEDs on the front panel can help you diagnose network failures. This

section describes common problems and ways to fix them.

1. If the LNK/ACT LED is off after connecting a device:

• check the network interfaces of the connected device and the

switch;

• make sure that the network cable is not damaged and is firmly

connected to the ports of both network interfaces (of the switch

and the device you intend to connect);

• make sure that the length of the cable does not exceed the

specified limit (100 meters / 328 feet).

2. If the Power LED is off after plugging the power cord into the AC

power connector of the switch and into the mains outlet:

• check the presence of power in the outlet;

• make sure that the power cord is not damaged and is firmly

plugged into the AC power connector of the switch and into the

mains outlet.

3. If the Power LED lights up after plugging the power cord, but then

turns off after a while:

• check that there are no excessive voltage drops in your electric

grid;

• make sure the power cable is not tightened (it can cause

inadvertent unplugging).

If the above steps do not resolve the problem, please contact

the service center.

6 Quick Installation Guide