PDP 11 - how to lock heads in a rx01 and rx02 - seeking advice

[devin davison]

Once I do this myself i plan to put up a gallery of lots of pictures to
help another newcomer such as myself. Not having seen the actual hardware
is what gets me the most mixed up.

On Sat, Jul 11, 2015 at 12:11 AM, devin davison <lyokoboy0 at gmail.com> wrote:

> I made a mistake. I was reading about the floppy drive and accidentally
> mentioned the rx01 / rx02. The hardware to be moved is actually RL01/RL02
> hard drives, not the floppy drive. Please forgive the mix up, any help is
> appreciated.
>
> On Fri, Jul 10, 2015 at 3:31 PM, Matt Patoray <mspproductions at gmail.com>
> wrote:
>
>> The RA60 is my least favorite drive to move. The thought of disassembling
>> it crossed my mind but since it was being slid into a rack with a shelf
>> and
>> not on rails it would not have helped much, so just picked it up, carried
>> it over and shoved it in.
>>
>> On Fri, Jul 10, 2015 at 3:22 PM, tony duell <ard at p850ug1.demon.co.uk>
>> wrote:
>>
>> >
>> > >     > From: tony duell
>> > >
>> > >     > I find [RL0x's] easier than RK05s
>> >
>> > > Try taking out an RA81!
>> >
>> > I did an R80 (not much lighter) single-handedly.
>> >
>> > The trick with those is to take the HDA out. It takes only a few
>> minutes.
>> > Raise
>> > the logic chassis (top part of the case including the front panel), then
>> > lock the
>> > heads (you MUST do this anyway), release the belt tension (lever at the
>> > front
>> > right), then unplug 3 cables (2 small ones on the front of the HDA and a
>> > 40 way
>> > ribbon from the PCB on top), take off the 4 mouting nuts and lift the
>> HDA
>> > up and
>> > out. Then tape the spindle pulley so it doesn't turn when moving the
>> unit.
>> > If it turns
>> > backwards it is likely to damage the heads.
>> >
>> > The rest of the drive (chassis, PSU, motor, logic PCBs) is just about
>> > liftable fully
>> > assembled.
>> >
>> > I think the worst is the RA60. It's very heavy and it is a pain to
>> > dismantle. You have to take it
>> > apart a little bit at a time.
>> >
>> > -tony
>> >
>>
>>
>>
>> --
>> Matt Patoray
>> Owner, MSP Productions
>> (330)542-3698
>> mspproductions at gmail.com
>> KD8AMG Amateur Radio Call Sign
>>
>
>