ADTRAN Total Access 3000 System Manual page 347

Perform Steps Below in the Order Listed
Using the fuse extractor if necessary, remove the fan unit fuse from the bay fuse
panel. If no bay fuse exists for the fan unit, remove the fuse from the rear of the
fan unit instead.
7. Verify that the System Alarm Log Shows the Fan Unit Alarm
Check the System Alarm Log to verify that an active alarm has appeared which
has the description EXTN input #1 associated with it. Verify that the alarm level
matches the user programmable level assigned during the Installation Procedure
(MINOR is the default level for this alarm). If no alarm appears, check the alarm
wiring between the fan unit and the Total Access shelf (wiring details are given in
DLP-711).
8. Replace the Fan Unit Fuse
Replace the fan unit fuse that was removed in Step 6.
9. Verify that the System Alarm Log Shows the Alarm has Cleared
Check the System Alarm Log to verify that the EXTN input #1 alarm has cleared.
The original EXTN input #1 Active Alarm line will remain in the Alarm Log, but
should no longer be reversed video. A new line should be present in the Alarm
Log indicating that the Fan Unit Failure alarm has cleared.
10. Clear Inactive Alarms
At Master Alarm screen, select (C)lear inactive to perform a Clear Inactive
Alarms. Use the Y key to confirm when prompted. This action should remove the
fan alarms from the Alarm Log.
11. Log out of the Shelf
Use the <ESC> key to back up through the menu levels until you are logged out of
the shelf.
12. Repeat the Test for Each Shelf with a Fan Unit.
Repeat Steps 1 through 11 for each shelf that has a fan unit installed.
1.3 Followup Procedures
Once this procedure is complete, return to the procedure which called out this DLP and
continue with the tasks indicated there.
Total Access ® 3000/3010 System Manual
6TADLP723-1E
TOTAL ACCESS 3000/3010
© 2002, ADTRAN, Inc.
DLP-723
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