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Conversions: DLP-505
363-205-401
Page 4 of 4
Issue 7, March 1997
9.
Have COT (and multiplexer facility if used) set ZSC line coding option for
digroup A.
10. Install AUA6( )C/D in LIU A slot.
Response:
The LIU FAIL indicators light momentarily.
Response:
After COT (and multiplexer facility) has installed the LIU, all
alarms clear.
11.
NOTE:
If digroup A was forced to protection, MN on ADU will be lighted because
digroup A is on protection. But CLF on LIU A should go off.
After COT installs LIU A (and multiplexer facility has selected ZCS line cod-
ing), do all alarms clear (CLF on LIU A off)?
If NO, then continue with Step 12.
If YES, then proceed to Step 14.
12. Verify that LIU options at both COT and RT have been set correctly. If LIU
FAIL does not go off, replace LIU with correctly set options.
13. Replace the following circuit packs, one at a time, until trouble clears.
• RT LIU.
• COT LIU.
• Multiplexer low speed interface circuit packs, if used.
14. If protection line is available, release digroup A from protection (switch A away
f on LSU). Repeat Steps 3 through 13 for each equipped digroup (LIU B,C,D,
and P, or C and P for Mode 2).
STOP. YOU HAVE COMPLETED THIS PROCEDURE.