Rather than just unlock one parm you should clear the drive's
non-volatile (battery backed) RAM to reset all values to default.
Since you already have the top cover off, look above the battery for
an unmarked test point at the board edge above the battery or
one marked "CLNVR" - depending on the rev of the boards. Short
this point to signal ground (which is marked by a downward arrow)
with a straightened paper clip and power up the drive. When the
display says "FAIL 0" you have cold-started the drive. Remove the
jumper, put the cover back on and re-power up the drive. First thing
to do is run TEST 99 at both densities to recalibrate and save
auto-gains.
Your drive should be ready to configure ID at this point.

                            Bob J. -- Ideal Computer Services
                            http://www.icsgroup.com



Eric Simpson wrote:
>
> All,
>
>     I recently purchased an HP 88780 drive, supposedly new (looks new
> anyway).  I took the controller cards out, and all say HP 88780 on them, one
> says 7980 so, I think I'm on the right track here.  When I got the drive, I
> couldn't change the ID (SCSI?) on the front panel from 5.  It was "locked'.
> Somehow I was able to get that unlocked and can change the ID now.
>
>     My problem is I don't have any documentation for how to configure this
> drive for my HP3000.  Does anyone have any documentation I could copy?
> Borrow?  Steal?
>
> - Eric