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Scanner runs loud not smooth - Canon DR9050C

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I have many years experience with Canon scanners and I do have some suggestions for you.

The only time I really experienced a loud scanner in that model was if if the rollers the smaller black ones were not spinning freely causing the paper to drag to the machine. That usually was caused by a gunked up bronze bushing the rollers sit in. When you open up the top half of the scanner by raising it up and with the power to the scanner turned completely off. You should be able to spin the small black rollers freely by hand by just passing your hand over each one. They are mounted on a shaft and and each set of 4 or 5 black rollers are mounted to a single shaft.Try spinning them if they all spin freely then your problem is with the lower rollers.

Again with power completely off try pushing on the black rollers on the bottom by hand. You will feel some resistance with these rollers because there are gears mounted to the end of these shafts and they are belt driven. They wont spin as freely but should spin with some resistance and if it is the problem your having with loudness you should here sort of a metal on metal sound that is telling you one of the bushings is worn out. If you dont hear any sounds then your problem is probably with the main drive motor that propels these rollers. To get at that motor you will need to remove the back cover first and then the right hand side cover because the motor is on the right hand side as you are facing the machine as if you were going to use it. The fix can be as simple as readjusting the tension on the main drive belt by loosing the screws on the main drive motor pulling the motor back until you have more tension on the belt and then tightening the screws back on the motor. Or it can be the motor itself. You will have to remove the screws that hold it in place and then slide remove the belt and slide the motor out towards you. You will recognize this motor because its towards the back of the machine, silver in color, with one small electrical connector mounted to it and its round about 3 to 4 inches in diameter. Once the motor is out try spinning it by hand to see if it is binding. Also once it is out now try spinning the bottom rollers by hand to see if you get a metal on metal sound because they will spin much more freely now. Once you determine which one of the items is causing your loud noise then contact your local canon dealer for the replacement part or you can even try looking on Ebay there are many parts for sale for your scanner its a popular model still today.

I hope this helped you out and if not let me know.

Posted on Apr 01, 2011

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