PDP-11/23+ and rx-02 drives, need help!!!

[g-wright at att.net]

Hi, 

I'm trying to get one of my 11-23's going and finally 
got around to setting up a TU58 emulator. got it
to boot RT-11 and now trying to get a RX-02 working.

I have 3 controllers and 3 sets of RX-02's.  All do the same
thing. The just seems to not be able to find track 1 or Home
or ???  The heads just keep going from  home to maybe the
first tack and back.  The heads do load and the system tries 
quit a few times then pauses and tries again. It then errors 
on drive failure or  read error directory not found, size 
function failed depends what I ask it to do.  I have tried all 
of the boards and drives. all or them seem to do the same
 thing.  I do not know  how good the drives are but can't
 believe there all bad.   

I have recheck the switches in the RX-02 and the Jumpers on 
the cards.  Cleaned the drives. tried different disks.

Is there some kind of   compatibility issue that i do not know 
about. Or do I have 6 dead drives.

The system is a Micro PDP 11,  8 slot Rack mount, with 
1  M8189 1123+
1  M8067 KB  256k Memory 
1 M8639 YA  MFM rx50 controller
1 M8029 RX-02 controller in this order.

Everything else seems to work.   I added the floppy card
but the rest original.


Thanks, Jerry

Jerry Wright
JLC inc.