Allied Telesis AT-FH708E Installation Guide download pdf (Page 16)

Problem Solving

Is the unit receiving

power?

Check the POWER LED on the front of the hub. This green LED should be

lit.

If the power LED is not on:

1. Check the back of the unit. Make sure the power cord is attached

securely.

2. Check the AC power adapter. Make sure the power adapter is plugged

into a functioning wall outlet and that it is properly inserted into the

hub’s power connector on the back of the unit.

Is the Link/Activity

LED lit?

The Link LED on the front of the hub lights when a proper connection

between the corresponding 10/100Base-TX port and the equipment

connected to it is established. If this LED is not lit, check for the problems

listed below and make corrections as necessary.

1. Problem 1:

The cable has been cut, damaged, or it is the wrong type of cable.

❑

Solution 1:

— Try making the connection with a different cable. Be sure

you are using an undamaged cable of the correct type.

2. Problem 2:

Connected equipment is not turned on or not operating properly.

❑

Solution 2:

— Check the connected equipment (computer, another hub,

etc.) and turn on the power.

3. Problem 3:

The MDI button is in the wrong setting.

❑

Solution 3:

— When using the cascade port of the hub, you should set the

button to the

To HUB

position; otherwise, the button

should be in the

To PC

position.

— When cascading two hubs, the unit using the cascade port

should have the button set to the

To HUB

position, while

the other unit should have its switch set to

To PC

— When ports with associated MDI buttons are not connected

to other hubs but are used to connect to workstations or

other equipment, you should set the MDI button to the

position.

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Allied Telesis AT-FH708E Installation Guide Page 16

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