Nortel Networks 553-3001-211 Manually isolating and correcting faults, Newly installed Msdl cards

NT6D80 MSDL card Page 407 of 894

Manually isolating and correcting faults

Problems are due to configuration errors that occur during installation or hardware faults resulting from component failure during operation. See “Symptoms and actions” on page 410 for more information on problem symptoms and required responses.

Isolate MSDL faults using the diagnostic tools described below:

1Observe and list the problem symptoms; for example, a typical symptom is a permanently lit LED.

2If the LED flashes three times but the card does not enable, verify that the card is installed in a proper slot.

3Check that the address is unique; no other card in the system can be physically set to the same device number as the MSDL.

4If installation is correct and no address conflict exists, refer to “Newly installed MSDL cards” on page 407 or “Previously operating MSDL cards” on page 408.

5If the MSDL still does not operate correctly, contact your Nortel Networks representative.

Newly installed MSDL cards

Problems that occur during MSDL card installation usually result from improperly installed, incorrectly addressed, or faulty cards.

If the LED on a newly installed MSDL does not flash three times after insertion, wait 5 minutes, then remove and reinsert. If the LED still does not flash three times, the card is faulty.

Circuit Card Description and Installation