I have a few of these HD drives out of SEs, Classics, LCs... and they all seem to be perfect in terms of logic.
I've attached some scans I did on a good working MFD 75W 01G and that may be useful to other people trying to pin point issues with this drive.
From what I can see all my non working drives send the correct signals to the heads, main motor spins speed seems to be correct as the step motor is triggered at the correct frequency.
That all leads to conclude the logic circuitry is working perfectly and the issue is head alignment or something to do with heads.
Then tried to manually re-align the track 0 sensor in 0.05mm intervals (using a micrometer) and no success.
So I am wondering, if there ever been an alignment floppy and software for these drives?
View attachment Scan 1 Copy 4.pdf
View attachment Scan 1 Copy 5.pdf
I've attached some scans I did on a good working MFD 75W 01G and that may be useful to other people trying to pin point issues with this drive.
From what I can see all my non working drives send the correct signals to the heads, main motor spins speed seems to be correct as the step motor is triggered at the correct frequency.
That all leads to conclude the logic circuitry is working perfectly and the issue is head alignment or something to do with heads.
Then tried to manually re-align the track 0 sensor in 0.05mm intervals (using a micrometer) and no success.
So I am wondering, if there ever been an alignment floppy and software for these drives?
View attachment Scan 1 Copy 4.pdf
View attachment Scan 1 Copy 5.pdf
