Question about Xerox Phaser 7750DN Laser Printer
That noise is one of the rollers on the lower pinch rolls contacting the plastic frame or the door, unfer the 2nd BTR assembly.. It may not even be there when the machine isnt fully warmed up. There is a spacer kit you can install to create a gap between the roller and cover.
It could also be the clutches for duplex.
Not sure what to tell you with the bottle. Normally that is very accurate. The yellow toner is more likely comming from the yellow toner hopper. There is a fairly thin soft rubber cover over the auger that can slip off easily and leak on any of those toners. I would suspect that before the bottle detection. Full bottle detection is pretty finicky.
Posted on Mar 24, 2008
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Posted on Jan 02, 2017
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