Lucent DDM-2000 OC-3 User And Service Manual page 627

TAP-102
:Trouble Clearing
Page 11 of 14
33. Refer to DLP-501 and replace the SYSCTL.
34. Is the FAULT LED still lighted on the SYSCTL?
If YES, then proceed to Step 40.
If NO, then continue with Step 35.
35. Is the MJ alarm LED still lighted?
If YES, then continue with Step 36.
If NO, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
36. Is the FAULT LED on OHCTL lighted?
If YES, then continue with Step 37.
If NO, then proceed to Step 42.
37. Refer to DLP-523 and replace the OHCTL.
38. Is the FAULT LED still lighted on the OHCTL?
If YES, then proceed to Step 40.
If NO, then continue with Step 39.
39. Is the MJ alarm LED still lighted?
If YES, then proceed to Step 42.
If NO, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
40. The problem appears to be in the backplane of the DDM-2000 or another
circuit pack in the shelf is causing the FAULT LED on the SYSCTL to light.
Remove service from one function group (A, B, or C) and unseat all circuit
packs associated with that group. If the trouble clears, it means that one or
more of the circuit packs removed is defective. If the trouble does not clear,
reinsert the removed circuit packs and repeat the above for another function
group. If the trouble cannot be isolated by removing circuit packs, seek
technical assistance and/or replace the shelf. Notify your supervisor, your local
technical support organization, or call Lucent Technologies RTAC, per local
operating instructions.
41. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
DDM-2000 OC-3 M
Issue 2, February 2000
ULTIPLEXER
363-206-285