I am having two problems on an Elite 48 at our church. The system has the following ETUs installed:
Slot 2 - Empty - programmed as MIFM
Slot 3 - ESI(8) - Ports 9-16
Slot 4 - COID(8) - CO1-4
Slot 5 - Empty - NON
Slot 6 - ESI(8) - Ports 21-28
Slot 7 - FMS(2) - Ports 17-20
CAR Keys assigned to Ports 45-48

Problem 1: Ports 21 and 28 will not work. Measured voltage at 31v on them and 26v on all others. Replaced ESI(8) with no change. Note that Port 21 was used with a SLT which I changed to TEL for DTU-8D. Port 28 had never been used.

Problem 2: Installed another ESI(8) into Slot 5 as a workaround for Problem 1. MB 7-1 for Slot 5 shows ERR when I change it from NON to ESI(8). I plan to set it to Ports 29-37.

I have the hardware & programming manuals for this system and have been able to upgrade it until now. Do I need to set the card type before I install it? I don't think it would let me do that anyway.

Any help is greatly appreciated.

Thanks,
Ike