diagnostics as long as the robot isn't going nuts
(rare) but
I haven't found which button actually selects said test or
function. Also, 2 of them don't open the drive door when
expected so the tape bounces off repeatedly until the robot
gives up....
Sorted it......it occurred to me this morning that we hadn't checked the
PSUs in these units, knowing DEC and it's choice of poor PSUs for external
tape units!
cheers
w