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.
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