Here’s some info. https://www.stason.org/TULARC/pc/hard-drives-hdd/maxtor/XT-2190-155MB-5-25-FH-MFM-ST506.html
It does sound like it can’t seek. Maybe a jumper incorrect? Sent from my iPhone On Feb 26, 2024, at 14:29, Jacob Ritorto via cctalk <cctalk@classiccmp.org> wrote: Thanks for the good ideas and convo everyone. Now please do note that I can definitely hear motor/platter spinup happening so it's definitely not "heads stuck to platter" stiction. I hear the lock unlatch and I *think* I even hear the heads load and fly (comparing what I hear on this drive to other drives I've actually seen the guts of in flying action) so I substantially doubt it's "arm stuck to lock pad goo" stiction. So we've made it through a lot of the powerup sequence and the problem is at the final part - the track scan up and back down the surface - the phase when the signature "...blearrnnnnt-meeeeeelrp..." happens :) And yes I believe from memory that XT-2190 is supposed to make the same track scan noise as the XT-1140 (I have an XT-1140 running perfectly as a fake RD54 in another pdp here). So could my behaviour of being hung at the final phase - the track scan noise - be the result of a lost servo track? Thinking about that, didn't someone on this list kill an XT-2190 recently by taking an outrageous magnet to it? Did you get the same track scan failure as I'm getting? Confused electronics on the PCB? Something else? Where would one begin diagnosing this particular problem? I did try the wrist twist torquing thing. And lightly whacking side of housing with palm of hand during track scan noise. Declining to do that hard, tho. Powered off and back on (to retry) probably near a hundred times now. Heated it gently in front of our forced-air furnace duct until comfortably warm to touch - probably near 105 F. All these produced absolutely zero behaviour change. thx jake
