Chapter 8: Maintenance and Troubleshooting
TROUBLESHOOTING
If this occurs: | Try this: |
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PC or hub not | • Check the LAN LINK LED. If it is off, check the cabling to the 10/100BASE port and to |
communicating | the hub or the NIC card in the PC to ensure it is secure. |
with the modem | • Check the position of the |
| |
| a PC. Set the switch to |
| • 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 a Static IP Address |
| |
| • Check the NIC card installation for correct IRQ, drivers, and adapter setup. See the |
| appropriate documentation for the NIC card. |
ADSL SYNC LED | When the LED remains off, it indicates that the modem is not detecting the other modem. |
| Verify that the modem is connected 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 64 kbps. The modem rate |
| adapts in increments of 32 kbps. |
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ADSL MARGIN | When the LED is off, it indicates that the margin is below the margin threshold configured |
LED off | on the 410F (see the Margin Threshold parameter on page 53). |
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LAN TX and RX | Check that the LAN LINK LED is on. If it is on, you are simply not transmitting or receiving |
LEDs are not on | data on the LAN |
| section “PC or hub not communicating with the modem” in this table. |
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ADSL TX and RX | Check that the ADSL SYNC LED is on. If it is on, you are simply not transmitting or receiving |
LEDs are not on | data on the ADSL (WAN) port. If, however, the ADSL SYNC LED is not on, your modem has |
| lost the link with the other modem. |
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If none of the above corrects your problem, contact ADC Technical Assistance (see page 81).
Megabit Modem 410F and 420F User Manual | 65 |