HP 9133/9134/9135 service manual

[Tony Duell]

> 
>      David Bryan just scanned and sent me a copy of "HP's 5 1/4-Inch
> Winchester Disc Drive Service Documentation" (HP 
> 09134-90032, August 1983) for the old style HP 9133/9134 and 9135 disk
> drives. Besides the always useful service information, it includes

For suitable values of 'useful' ;-). There are no full schematics, for 
example. I was suprised to see the alignment info for the index sensor in 
the ST506, etc. That's not something that normally needs adjustment.

One other thing I noticed. In the parts list for one of the units 
(9133XV?), it calls the firmware EPROM the 'Coyote ROM'. Was that the 
codename for the 9133XV?

Still quite an interesting manual, particularly the appendix which gives 
the command set.

-tony