Got over there today. Still the same thing. An AB 1395 drive. Found some drive boards, no ibe has an idea if they're good, bad or indifferent. Tried them and the drive would not even come up. Fails to initialize or reinitialize with any combination. Put the old stuff back in it. Same story, up is down and down is down on construction. Plugged in the other cards and same thing. The cpu sees the up and down. The failures are a comparator errors. I've had to change out the drives on other units so it's not a big deal. Another day.