Loud sqeaking noise from a MFP M477fdn prnter

[MargaretRMI]

Product # CF378A, manufacturing date 3-19-2016.  This printer has developed a loud squeaking sound when a document is printing.  It sounds as though it's coming from something that's rotating and it's towards the back of the printer.  It occurs before, during and after the page is printed.  I've used the printer since 2017 and the company probably purchased it in 2016.  All other functions are working fine.  I checked the product manual but this is no reference to this type of issue and there are no error messages.  The print quality is normal.

[Repairatrooper]

Most print noises are caused by cartridge issues. What are the supply levels like.

[MargaretRMI]

Black is 70%, Magenta is 50%, Cyan & Yellow are 10%.

[ALS-77 · Accepted solution]

It is likely your Cyan or Yellow (or both) cartridges that are squealing since they are low. This is very common with Non-OEM cartridges. There is a rubber-like cleaning blade inside the cartridges that cleans the drum as it prints. There is also a lubricant mixed in with the toner to help lubricate this blade. Non-OEM cartridges usually don't have enough of this lubricant to last to the end and therefore the blade starts to squeal as it rubs against the drum without that lubricant. Simply replace the toners that are low and problem is fixed. 

If you want, you can remove them, one at a time, and close the door and listen as the machine runs to see if the squeal is gone or not. Once it doesn't squeal with the toner cartridge out, that one is the problem one.

You can also try shaking the cartridges to get the toner and lubricant re-distributed to maybe help, but no guarantee.

[SteveMeq]

Similar problem but

Factory cartridges B 60%, C 100%, M 100%, Y 90%.  Already ran diagnostics page and cleaning page

[east2100]

Do as ALS-77 said:

If you want, you can remove them, one at a time, and close the door and listen as the machine runs to see if the squeal is gone or not. Once it doesn't squeal with the toner cartridge out, that one is the problem one.

Higher level % of toner cartridge doesn't mean it can keep itself from going bad.

Maybe it the highest level is the one which is broken and that always happens.