29 Apr
2013
29 Apr
'13
1:24 p.m.
A DA15
conenctor on a CD-ROM drive suggests the old Philips/LMS (Laser
Magnetic Storage) interface. I have the service manual dfor one such
drive used o na PCB) whihch gives the interface pinout.
If that's right, the cambe would be straight-0through, but there are a
couple of differnetial (RS422-like) signals which probabvly should be
twisted pairs. But this doens;'t explain why the thing doesn;'t work
with the cab kit direlctly plugged into the drirve.
I was hoping it was a straight-through cable, but couldn't get it to
work with things I had on hand. Are you sure the drive and controller are working
properly?
No. The drive came with the VAX, which had a dead memory board (now
fixed), an unusable TK50 (replaced) and a dead RD54 (which is still
dead - that's the next thing to try to diagnose).
The controller was bought off of e-pay, so there's no guarantee that
it's functional.