29 Sep
2011
29 Sep
'11
1:16 p.m.
On 09/29/2011 02:30 PM, Chris Elmquist wrote:
But it appears that my drive has some issues. I can
command it to seek
to a particular block, the motor spins up, advances the tape a small
amount and then stops, at which point the drive returns an "END PACKET"
with an error status of "motor stopped".
The motor is free to turn... even with a tape installed and I've scoped
for usual things such as tach pulses coming back, etc. so the failure
is non-obvious at this point.
I did find that one of the tapes failed the first time the drive tried to
move it. Broke the little belt inside just as I suspected might happen.
Moved on to another tape and that one is holding together so far.
More to investigate.
I believe there's an optical shaft encoder on the spindle motor of
the TU58. I'd check to see that the disk (which is paper-thin sheet
metal) and the opto interruptor aren't clogged up with dust bunnies,
then test the opto interruptor itself.
-Dave
--
Dave McGuire
Port Charlotte, FL