RA82 questions

So, Jay's talk about RA81's spurred me on to work on testing out my RA82 disks. I've got an SA482 which has 4 RA82's, and drive 0 seems to work just fine, after I unlocked the disk heads. :) The other three aren't working as well though, it seems. One seems to give a fault when it spins up, but after it spins up, runs the on-board diagnostics ok. The relevent log of the on-board diagnostics session are below (starting from when I pressed the "RUN" button to spin it up): ------------------------------------------------------------- RA82> FRONT PANEL FUNCTION IN PROGRESS %RA82-COMPLETED TEST: SUBTEST:1B %RA82-COMPLETED TEST: SUBTEST:1C %RA82-COMPLETED TEST: SUBTEST:1D %RA82-COMPLETED TEST: SUBTEST:1E %RA82-COMPLETED TEST: SUBTEST:20 %RA82-TEST:DIAG SUBTEST:20 ERROR:4B UNIT:001 REFER TO SERVICE MANUAL RA82> %RA82-TEST:DIAG SUBTEST:20 ERROR:FE UNIT:001 REFER TO SERVICE MANUAL RA82> RUN DIAG %RA82-COMPLETED TEST:DIAG SUBTEST:02 %RA82-COMPLETED TEST:DIAG SUBTEST:01 %RA82-COMPLETED TEST:DIAG SUBTEST:04 %RA82-COMPLETED TEST:DIAG SUBTEST:05 %RA82-COMPLETED TEST:DIAG SUBTEST:06 %RA82-COMPLETED TEST:DIAG SUBTEST:07 %RA82-COMPLETED TEST:DIAG SUBTEST:08 %RA82-COMPLETED TEST:DIAG SUBTEST:0B %RA82-COMPLETED TEST:DIAG SUBTEST:03 %RA82-COMPLETED TEST:DIAG SUBTEST:1A %RA82-COMPLETED TEST:DIAG SUBTEST:1B %RA82-COMPLETED TEST:DIAG SUBTEST:1C %RA82-COMPLETED TEST:DIAG SUBTEST:1D %RA82-COMPLETED TEST:DIAG SUBTEST:1E %RA82-COMPLETED TEST:DIAG SUBTEST:20 %RA82-COMPLETED TEST:DIAG SUBTEST:21 %RA82-COMPLETED TEST:DIAG SUBTEST:22 %RA82-COMPLETED TEST:DIAG SUBTEST:25 %RA82-COMPLETED TEST:DIAG SUBTEST:26 %RA82-COMPLETED TEST:DIAG SUBTEST:27 %RA82-COMPLETED TEST:DIAG SUBTEST:28 %RA82-COMPLETED TEST:DIAG SUBTEST:29 %RA82-COMPLETED TEST:DIAG SUBTEST:2A %RA82-COMPLETED TEST:DIAG SUBTEST:0A %RA82-COMPLETED TEST:DIAG SUBTEST:0F %RA82-COMPLETED TEST:DIAG SUBTEST:10 %RA82-COMPLETED TEST:DIAG SUBTEST:0E ---------------------------------------------------------------- Looking at the manual, error 4B is "index pulse error" and FE is "Slave speed check timeout". Considering that they only occur when the disk is first spun up, is it maybe really ok, but the disk doesn't spin up as fast as the logic wants it to? The errors seem to be consistent (they happen each time I power up the drive). Has anyone seen something like this before, and is it something that I should be worried about? The service manual seems to suggest that the servo module or microprocessor module could be bad. Thanks, Pat