PRELIMINARY
TROUBLESHOOTING

Chapter 8: Maintenance and 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-T port and to the

 

communicating

hub 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. See “Setting Up the PC to Request anRYIP Address” on page 18.

 

 

• 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.

 

 

 

 

A

 

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 minimumNtransmission rate of 64 kbps. The modem rate

 

 

 

I

 

 

 

adapts in increments of 32 kbps.

 

 

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

 

 

 

M

 

 

 

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

 

ADSL TX and RX

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

 

LEDs are not on

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

 

EL

 

 

PR

 

 

 

Megabit Modem 500L Installation Manual

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