Conversions: NTP-004
363-205-401
Page 2 of 4
Issue 7, March 1997
DO ITEMS BELOW IN ORDER LISTED
FOR DETAILS, GO TO
3.
!
CAUTION:
Both the COT and RT (and all multiplexer interfaces) must
be set to ZCS at the same time to avoid service interruption.
Change AUA6( )C or AUA6( )D LIUs line coding option, one
digroup at a time, from B (B8ZS) to Z (ZCS) for each equipped
digroup in the system.
4.
NOTE:
Removing the following units will not interrupt service on a
working system.
NOTE:
A FPA COT should be converted to FPC AutoCut at or about
the same time the RT is converted to avoid possible service
interruption.
Remove the following circuit packs, in the order listed, from the
RT bank being converted:
• ADU
• BCU
• CTU
5.
Remove BCU and install MC97771A1 BCU (bank control unit).
Verify the BCU FAIL indicator lights then goes off. If not, replace
BCU.
6.
Install AUB27 ADU (alarm display unit).
