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

Paul Koning paulkoning at comcast.net
Fri Jul 10 10:40:42 CDT 2015

> On Jul 10, 2015, at 10:18 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu> wrote:
>> From: devin davison
>> I was told to lock the heads in the rx01 and rx02 drives.
> Err, I think we told you to lock the heads the RL0x's, not RX0x's; the former
> use large rigid packs, the latter are 8" floppy drives. AFAIK, there is no
> need to lock RX heads when moving them - there is nothing in the manual about
> RX drives being shipped from DEC with the heads locks.

That seems logical; stepper motors are to some extent self-locking.


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