Thanks for posting your question on Justanswer.com, a global paid independent support site.My Name is ***** ***** I will be assisting you today.The problem you are describing is generally caused due to low toner or fuser problem. As you have faced regular paper jams before this problem, the sound may be coming from the gears of the rollers. Now, honestly speaking the only way to detect the exact fault is taking apart the printer and unfortunately, it is not recommended for any user. If you still want to do that, then you can use the service manual from the link below and then, take apart the printer. After that, you can check which gears needs to be replaced. You can get the spares from any online store, but the biggest problem is the price of the spares because the price you have to pay for the spares will be same as the price of a refurbished printer. If you sill wants to solve the problem on your own then, you can do that.
But, before that you can try the solution according to the printout quality from the link below.
If you want to take apart the printer then, you can use the service manual from the link below.