363-205-401
Conversions: DLP-509
Issue 7, March 1997
Page 3 of 4
14. After COT installs TRU AB, did LIU-A, -B CLF (and -P if equipped) and BCU A
and B indicators go off?
If NO, then continue with Step 15.
If YES, then proceed to Step 18.
15. Perform the following items to clear trouble:
• At COT, check ADU and LIU options and verify correct version common
units are installed.
• At RT, check ADU options and replace ADU if options are correct.
• At RT, check LIU options and replace LIU if options are correct.
16. After performing the above Step, did LIU-A, -B CLF (and -P if equipped) and
BCU A and B indicators go off?
If NO, then continue with Step 17.
If YES, then proceed to Step 18.
17. Trouble on digital line associated with digroup B. Verify that digital pairs have
been connected to the proper outside plant cable pairs. Use 363-205-500 or
363-202-500 TOP fault-locating procedures to locate trouble.
18. Request COT personnel to install TRU for shelf group CD
Response:
All alarms clear with in 4 minutes.
19. After COT installs TRU CD, did all alarms clear?
If NO, then continue with Step 20.
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
20. Perform the following items to clear trouble:
• At COT, check ADU and LIU options and verify correct version common
units are installed.
• At RT, check ADU options and replace ADU if options are correct.
• At RT, check LIU options and replace LIU if options are correct.
21. After performing the above Step, all alarms clear?
If NO, then continue with Step 22.
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
22. Trouble on digital line associated with digroup D. Verify that digital pairs have
been connected to the proper outside plant cable pairs. Use 363-205-500 or
363-202-500 TOP fault-locating procedures to locate trouble.
