RA81 problems, someone with a service manual can help?

Hi, today I moved the RA81 from the garage down into the Laundry/Computer- Room in the basement. Thanks to my straps and a hydraulic car jack- stand I was actually able to install it in my TU81+ cabinet without breaking my back or getting squished underneath the drive :-). It looks really cool in the TU81 rack. I powered it up and though no lights at these push-buttons come on, I could test it quite far. Thanks to Will Kranz' abridged service manual http://www.conknet.com/~w_kranz/pdp11/RA81.HTM I knew what I could do with the terminal and that CTRL-C will get it going (not CTRL-Z like with the TU81+) and after running diagnostics once, I could actually spin up the drive. Just seeking seems not to work. Spun up diagnostigs gets the error terminal plugged in, 300 b/s, 8 bit, 1 stop no parity ? ^C CTRL-C gets a prompt RA81> EUR^C RA81> EUR turn serial port to 7 bit instead of 8 removes the junk RA81> RA81> RUN DIAGNOSTICS %RA81-COMPLETED TEST:DIAG SUBTEST:02 %RA81-COMPLETED TEST:DIAG SUBTEST:01 %RA81-COMPLETED TEST:DIAG SUBTEST:07 %RA81-COMPLETED TEST:DIAG SUBTEST:08 %RA81-COMPLETED TEST:DIAG SUBTEST:0B %RA81-COMPLETED TEST:DIAG SUBTEST:03 %RA81-COMPLETED TEST:DIAG SUBTEST:0D %RA81-COMPLETED TEST:DIAG SUBTEST:19 %RA81-COMPLETED TEST:DIAG SUBTEST:1B %RA81-COMPLETED TEST:DIAG SUBTEST:1C %RA81-COMPLETED TEST:DIAG SUBTEST:1D %RA81-COMPLETED TEST:DIAG SUBTEST:1E %RA81-COMPLETED TEST:DIAG SUBTEST:1F %RA81-COMPLETED TEST:DIAG SUBTEST:20 this was diagnostics spun down, everything successful! Now I push the RUN/STOP switch in and there comes the sound of the drive spinning up, really impressive! RA81> FRONT PANEL FUNCTION IN PROGRESS then this message comes and a long time nothing, finally: %RA81-TEST: SUBTEST:1B ERROR:50 UNIT:001 %RA81-FRU-SLAVE RESPONSE FAIL- SERVO,MICRO not knowing what else to do I do diagnostics again in spun up mode RA81> RUN DIAG %RA81-COMPLETED TEST:DIAG SUBTEST:02 %RA81-COMPLETED TEST:DIAG SUBTEST:01 %RA81-COMPLETED TEST:DIAG SUBTEST:07 %RA81-COMPLETED TEST:DIAG SUBTEST:08 %RA81-COMPLETED TEST:DIAG SUBTEST:0B %RA81-COMPLETED TEST:DIAG SUBTEST:03 %RA81-COMPLETED TEST:DIAG SUBTEST:19 %RA81-TEST:DIAG SUBTEST:1B ERROR:50 UNIT:001 %RA81-FRU-SLAVE RESPONSE FAIL- SERVO,MICRO RA81> RUN SEEK ENDING CYLINDER? 1000 GROUP? 10 OPERATION FAILED RA81> RUN RECAL %RA81-TEST:RECA SUBTEST:2A ERROR:50 UNIT:001 %RA81-FRU-SLAVE RESPONSE FAIL- SERVO,MICRO At no time I heard any seeking activity. Will's service manual page says this: I don't see any system fault code on the led bits in the front of the controller board with the hood open after the E7 "test in progress" status byte is cleared. (So I do see the blinkenlights, just there is no fault code besides the error message on the service terminal. Error 50: So, sounds like there is once chance for me: to find this "positioner motor lock" and move it into the unlock position. However, I have no idea how to do that? It sounds reasonable that this thing may be locked for transport, I sure hope so, because otherwise all my moving and installing this thing would have been in vain. any help with this is appreciated. Not that I depend on the RA81 for operation, but I've got it and I believe in having a VAX collection with 100% functional stuff. regards -Gunther PS: Anyone having dead RA81's for parts? Anyone has spare SDI bulkheads? I need one or two 2- or 4- port bulkheads for the RA disks outside the SA600 cabinet. -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org