Conversions: DLP-507
363-205-401
Page 10 of 12
Issue 7, March 1997
20. Replace TRU with TRU removed previously.
21.
!
CAUTION:
Incorrectly set ADU option switches may result in immediate or future
loss of service or may introduce errors into the digital bitstream.
Replace ADU with a correctly optioned ADU.
22. Reseat LIU while observing FAIL indicator on LIU faceplate.
23. After approximately 20 seconds, did FAIL indicator on LIU light momentarily?
If YES, then proceed to Step 26.
If NO, then continue with Step 24.
24.
!
CAUTION:
Incorrectly set ADU option switches may result in immediate or future
loss of service or may introduce errors into the digital bitstream.
Replace ADU with ADU removed previously.
25. Check wiring between PCU in AB shelf and LIU using SD-7C117-01 or
SD-7C117-02. Repeat procedure from Step 14 after locating and correcting
trouble.
26. Did FAIL indicator on LIU go off and remain off?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 27.
27. Remove and reinsert ADU.
28. Did FAIL indicator on LIU go off and remain off?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 29.
29. Replace LIU with correctly optioned LIU while observing FAIL indicator on LIU
faceplate.
30. Did FAIL indicator on LIU go off and remain off?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 31.