Acer ALH-616ds Bedienungsanleitung PDF herunterladen (Seite 27)

Symptoms

All LEDs are

off

Link LED of a

connected

port is off

100 LED is

not lit when

connected to

a 100 NIC or

100 Hub(but

Link LED is

lit.)

Possible Reason Suggestions

The hub is not receiving

DC power

1.The UTP cable is not

securely connected

2.The port is bad

3. If the other party is a

PC, the Network

interface card(NIC)

could be not working

1. Check if the AC power cord

is securely fastened at both

ends ands that power is

available at the AC outlet.

2. Check if the power adapter

DC 5V cord is connected to

Hub's DC jack

1. Check the cable connection

2.Try to connect another port

3. Check if the network

interface card(NIC)is

installed properly

4. If the other party is a

hub or LAN switch, the

connected ports signal

could be cross-over

4. Make sure ALH-616ds

normal port is connected to

the other hub's(or

switch's)uplink port(or called

cross-over port); and ALH-

616ds uplink port is

connected the other's

normal port

5. The UTP cable is

broken, or it is a cross-

over cable

The auto-negotiation

function is failed between

ALH-616ds and the other

party

5. Try another normal cable

1. Un-plug the UTP cable from

ALH-616ds, and plug-in

again

2. Check if the NIC is set to

anto-negotiation mode

3. Check if the other hub is set

to auto-negotiation mode

4. if the above steps does not

work, it is an inter-

operability problem, contact

your vendor

4.1 Symptoms and Suggestions

4. Troubleshooting

4-1

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