Conversions: NTP-011
363-205-401
Page 2 of 4
Issue 7, March 1997
DO ITEMS BELOW IN ORDER LISTED
FOR DETAILS, GO TO
Remove the following circuit packs from the RT system being con-
verted:
• Alarm display unit (ADU)
• Bank control unit (BCU)
• Transmit/receive unit (TRUs)
• Line switch unit (LSU).
4.
Set option switches on the AUB27( ) ADU for preservice and
unequipped. Install the ADU and disregard all alarms.
5.
Install the FPB BCU removed during the conversion to FP303.
Within 30 seconds, all indicators go off. If the PRV LED on the
ADU remains lighted, wait for the PRV LED to go off before con-
tinuing.
6.
Remove the ADU. If equipping the AB shelf change switch S1-5
to ABE; if equipping the CD shelf change switch S1-6 to CDE.
Set the NORM/CLEAR option plug for NORM. Reinstall the ADU.
Within 30 seconds, only the MJ and NE LEDs on the ADU and
the DIGROUP LEDs (for those DS1s being equipped) on the BCU
stay lighted.
7.
Install an AUA105 or AUA109 transmit/receive unit (TRU) in AB
shelf. Verify that the TRU FAIL LED lights and goes off.
In about 25 seconds, one of the following happens:
• If equipping only the AB shelf with no protection switching, all
alarms clear.
• If equipping only the AB shelf with protection switching, only
the MN and NE LED on the ADU stay lighted.
• If equipping both the AB and CD shelves with or without pro-
tection switching, only the MJ and NE on the ADU and the
DIGROUP C and D LEDs on the BCU stay lighted.
