Troubleshooting

TROUBLESHOOTING

If this occurs:

Try this:

 

 

PC or hub not

• Check the LINK LED. If it is off, check the cabling to the 10/100BASE port and to the hub

communicating

or the NIC card in the PC to ensure it is secure.

with the modem

• Check the position of the MDI/MDI-X switch. Set the switch to MDI when connecting to

 

 

a PC. Set the switch to MDI-X when connecting to a hub or router.

 

• Check that you are using a Web browser (Netscape or Internet Explorer) version 4.0

 

or newer.

 

• Check that you have a TCP/IP protocol stack installed on your PC.

 

• If this is the initial installation, check that you set the IP address on your PC to obtain an

 

IP address automatically. Make sure you have configured the LAN IP address of the

 

modem to an address that is on the correct subnet. See “Setting Up the PC To Configure

 

the Modem” on page 18.

 

• You configured the LAN IP address of the modem to an address that is not on the

 

same subnet.

 

• Check the NIC card installation for correct IRQ, drivers, and adapter setup. See

 

appropriate documentation for the NIC card.

 

If none of the above corrects your problem, contact your service provider.

SYNC ADSL LED

Contact the service provider when the LED remains off indicating that the modem is not

 

detecting a transceiver at the far end. Flashing green indicates that the modem is attempting

 

to bring up the link. Solid green indicates that the loop is up.

 

The modem synchronizes at a minimum transmission rate of 64Kbps. The modem rate

 

adapts in increments of 32Kbps.

 

 

MARGIN ADSL

Contact the service provider when the LED is off indicating that the margin is below that

LED lights green

specified by the service provider.

 

 

LAN TX and RX

Check that the LINK LED is on. If it is on, you are simply not transmitting or receiving data

LEDs are not on

on the LAN 10/100BASE-T port. If, however, the LINK LED is not on, check the section “PC

 

or hub not communicating with the modem” in this table.

 

 

ADSL TX and RX

Check that the SYNC LED is on. If it is on, you are simply not transmitting or receiving data

LEDs are not on

on the WAN ADSL port. If, however, the SYNC LED is not on, contact your service provider.

 

 

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Megabit Modem 400F User Manual