On Thu, 8 Nov 2001, Tony Duell wrote:
> > As far as I know, there is no procedure in the Disk ][ manual for aligning
> > a drive, and as far as I know, there is no reason for needing one.
>
> There is no procedure in PC user manuals for aligning the floppy
> drives. Are you saying such a procedure does not exist? I have the
> service manuals for the Teac drives used in my PCs and they include
> alignment procedures.
No, but as I clearly stated, in my experience there was never any reason
for NEEDING one. I've never had to align an Apple ][ disk.
> Anyway, look at the schematic on page 146 of the Apple DOS manual
> (Circuit Schematic : Disk II Analog Board). TP8 and TP9 are the points
> to connect a differntial-input 'scope to (the outputs of the read
> filter, as usual). Pop in an alignment disk, move the head to the
> correct track, turn the stepper motor to get the right catseye
> pattern.
Cool. I'll keep this info handy in the rare or unlikely event that I ever
need to do this.
The Apple ][ disk mechanism is solid.
Sellam Ismail Vintage Computer Festival
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Received on Sat Nov 10 2001 - 19:25:05 GMT