On Sun, 2001-11-11 at 21:47, Brian Wheeler wrote:
> Been a while since I've played with the RA8x drives, but did you unload
> the heads?
>
> Brian
>
Oops "unlock" :)
Brian
>
> On Sun, 2001-11-11 at 21:42, Gunther Schadow wrote:
> > 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:
> >
> > > D.28 TEST 1B (SERVO PLO TEST)
> > > This test checks the servo module PLO circuitry.
> > > Errors associated with this test are: 50, 7B, C6, FO to FE.
> >
> > 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:
> >
> > > 50 Ensure that positioner motor lock is in the unlock
> > > position. If OK, then replace servo module,
> > > microprocessor module
> >
> > 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.
> >
> >
Received on Sun Nov 11 2001 - 20:58:30 GMT