
NT6D80 MSDL card
Page 419 of 906
Circuit Card
Description and Installation
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 422
for more information on problem
symptoms and required responses.
Isolate MSDL faults using the diagnostic tools described below:
1
Observe and list the problem symptoms; for example, a typical symptom
is a permanently lit LED.
2
If the LED flashes three times but the card does not enable, verify that
the card is installed in a proper slot.
3
Check that the address is unique; no other card in the system can be
physically set to the same device number as the MSDL.
4
If installation is correct and no address conflict exists, refer to “Newly
installed MSDL cards” on
page 419
or “Previously operating MSDL
cards” on
page 420
.
5
If the MSDL still does not operate correctly, contact your Nortel
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.
Summary of Contents for Circuit Card
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Page 4: ...Page 4 of 906 Revision history 553 3001 211 Standard 3 00 August 2005...
Page 18: ...Page 18 of 906 Contents 553 3001 211 Standard 3 00 August 2005...
Page 78: ...Page 78 of 906 Overview 553 3001 211 Standard 3 00 August 2005...
Page 100: ...Page 100 of 906 Acceptance tests 553 3001 211 Standard 3 00 August 2005...
Page 156: ...Page 156 of 906 Option settings 553 3001 211 Standard 3 00 August 2005...
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