Diagnostics and Troubleshooting
Table 6-2. Major Alarms (2 of 2)
Alarm | Action | |
|
| |
Ethernet | 1. Check cable connections to the DSLAM. | |
Port Failure | ± If cables are terminated properly, go to Step 2. | |
| ||
| ± If cables are not terminated properly, terminate them correctly. | |
| 2. Check cable connections to the hub or Ethernet switch. | |
| ± If cables are terminated properly, go to Step 3. | |
| ± If cables are not terminated properly, terminate them correctly. | |
| 3. Check the Activity/Status LED at the Ethernet hub. | |
| ± If Activity/Status LED does not indicate a problem, go to Step 4. | |
| ± If Activity/Status LED indicates a problem, take appropriate action. | |
| 4. Disconnect the Ethernet cable and replace it with a working cable | |
| from a spare port on the hub. | |
| ± If the replacement cable works, the original is bad and should be | |
| permanently replaced. | |
| ± If the replacement cable does not work, reconnect the original | |
| cable and go to Step 5. | |
| 5. Move the DSL card and cable to another (spare) slot. | |
| ± If this solves the problem, the connector or interface panel | |
| connections for the original slot are bad. Schedule maintenance for | |
| the chassis and try to use the spare slot temporarily. | |
| ± If this does not solve the problem, the DSL card is probably bad | |
| and should be replaced. | |
|
| |
DSL Port | 1. Check the Selftest Results display by following the menu selection | |
Failure | sequence: Diagnostics → Selftest | |
| 2. Do another Selftest (Reset) and check results. | |
| ± If the results are normal, the problem was transient. Log the results. | |
| ± If the results are the same as the first | |
| replaced. If only one port on a DSL card is bad, that port can be | |
| disabled. You may continue to use the card until it is convenient to | |
| replace it. | |
|
| |
DSL Card | 1. Check to see if the lights are out on the DSL card. | |
Not | ± Plug the card into an empty slot to see if it responds. If not, the card | |
Responding | ||
is bad and needs to be replaced. | ||
| ||
(LEDs on | ± If the card responds in a different slot, the slot connector may be | |
card are out | bad. Call your service representative. | |
or MCC is | 2. Check to see if the DSL LEDs are on. | |
showing an | ||
± If not, pull the card out and plug it in again. | ||
alarm.) | ||
± Reset the card from the MCC or DSL Main Menu. | ||
| ||
| ± Go to the MCC Main Menu and clear NVRAM. | |
| ± Replace the card. | |
|
|
January 1999 |
