I second John's recommendations. If you've had the printer 6 years, replacing the belt, and the "service station" while the printer is torn apart should do you well. The fan noise, is common, and would recommend replacing the fan assembly on the power supply, which should only cost you $35 or so. Service men usually want to replace the whole power supply to the tune of $250, which is generally not necessary. I just replaced the drive belt on my Z3100 after 9 years. I aim to keep it running as long as I can. Very reliable printing machine, especially for someone that doesn't do a lot of printing consistently. (leaves the printer sitting unused for weeks at a time.) If a print head does go south on you, you can replace the whole set of 6 for under $400 if necessary. This is less than the cost of one printed (of two) on the Canons.