On 1/21/15 10:01 AM, Shoppa, Tim wrote:
My belief (perhaps unfounded) always was that when a
XT2190 begins emitting "squeals and beeps" it is because the MFM interface has
asserted "recovery mode" and it is microstepping.
Are the squeals and beeps from the head positioner
The patent I pointed to talks about their track positioning algorithm. I think what
you're hearing is the voice coil
acceleration ramps reflected in the mechanics of the arm. I tried powering up the $10
as-is 2190 I bought. The positioner
is trying to move but it sure doesn't sound healthy.
I re-read the OEM manual
http://bitsavers.org/pdf/maxtor/1014286A_XT1000_2000_OEM.pdf and
there is no "recovery mode" pin on
the edge connector. Pin 16 of the 34 pin connector is jumpered to pin 7 of the 20 pin
connector to provide an indication
that both cables are plugged into the drive.