Had a toner bottle squeak (only when it's nearing empty) on this very same machine Biz 361 mono (same as 421, 501), but this is a new noise, any time a cover is opened and then closed, or a print cycle starts, according to the Theory of Ops manual timing chart should be drum motor first (srange it doesn't show dev. motor starting at same time) - correct me if I'm wrong??
So, something in the drum drive section or the drum unit itself. it's not even halfway to the 675k 'replace' mandate, and I've powdered the drum. But if I'm not reading the theory right maybe more than drum motor is on then?
After also looking at the exploded parts drive sections diagrams, there are at least a dozen shafts buried in the rear drive section. I guess I could try to drop oil on them through the process cavity, but that seem like I may still not be able to get my oiler at the noisy bushing, shaft or clutch(?? I don't see any in drive section but maybe reg clutch??) that's driving my customer (and now me) to drink.
Anyone gotten this? Any suggestions? Looks to me like you have to tear the whole back cage off to get to the drive area. And then put it back together, that would suck! There doesn't seem to be any menu in service mode to run JUST one motor at a time....unless I missed that too? I am getting old over here, maybe I've lost it!!
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