Spinning up RL02 w/o head load ? (was Cleaning RK05 packs)

On Jan 7, 2017, at 3:42 AM, Pete Turnbull <pete at dunnington.plus.com> wrote: On 07/01/2017 04:08, Robert Armstrong w#rote: I haven't done this for a while, but I think it might work if you also disable the SK TO (Seek Timeout) signal on the main logic board, and maybe also POS SIG (Position Signal). There are several setup and adjustment procedures that require one to move the heads by hand, including right back onto the loading ramp. You'd do this with the cover open, the logic board swung up and resting on its clip at the back of the drive, and with the amplifier box turned to a vertical position sitting on its right-hand supports. The procedures require the above signals to be disabled, and the servo drive (the single inline connector under the amplifier box) to be disconnected. However, they all start by pressing LOAD and allowing the heads to load at least as far as the loading area at the outside edge of the disk before disconnecting the servo drive; I can't remember if the heads actually go beyond that into the area where the data tracks are. How you disable the signals depends on the version of the main logic board - there are three different types, all described in the pocket service guide. -- Pete Pete Turnbull