Lucent DDM-2000 OC-3 User And Service Manual page 636

TAP-104
: Trouble Clearing
Page 2 of 4
11. Is FAIL LED lighted on any 336A RECTIFIERs at RT?
If YES, then continue with Step 12.
If NO, then proceed to Step 14.
12. Replace 336A RECTIFIERs that have FAIL LED lighted.
13. Did alarm clear within 20 seconds?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then proceed to Step 27.
14. Is BAT DISCHG LED lighted on any 337A BATTERY CHARGER(s)?
If YES, then continue with Step 15.
If NO, then proceed to Step 27.
15. Replace one 336A RECTIFIER.
16. Did alarm clear within 20 seconds?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 17.
17. Replace another 336A RECTIFIER.
18. Did alarm clear within 20 seconds?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then proceed to Step 27.
19. Is fuse blown or circuit breaker tripped at RT main AC circuit breaker box?
If YES, then continue with Step 20.
If NO, then proceed to Step 23.
20. Replace blown fuse or reset circuit breaker.
21. Does fuse blow or circuit breaker trip again?
If YES, then proceed to Step 27.
If NO, then continue with Step 22.
DDM-2000 OC-3 M
Issue 2, February 2000
ULTIPLEXER
363-206-285