You wont be able to test the SCSI in an A3000D unless you have had the Int2 mod done on the A3000. This allows a required siginal to be passed to the CPU slot. The best way to test it would be to send it to a tech you can trust that also has boards like this. I have an A4000 test station I use for this on the boards and accelerators I rebuild and repair. If you would like me to test it fully I would do it at no charge for you if you pay shipping both ways and be sure to insure it.
You can review my repair thread here to get an idea of what I do. I am also sure I will have some users step in and vouch for my credibility.
