Question about Canon imageCLASS MF6550 All-In-One Laser Printer

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MF6500 shooting blanks

Trying to make copies and only blank pages come out.  Tried changing toner but that didn't make any difference.

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  • data1701 Mar 01, 2009

    I just changed my toner cartridge and now blank pages. Put the old cartridge back in (which was still working) but still blang pages. Will call Cannon Monday March 2, 2009 for advice and if needbe repair. Unit is two years old.

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Hi

I hope you still have your copier and have not yet sent it in. I had the same problem and when I called Canon Tech support, they told me to go buy a new CANON brand toner cartridge that costs from $150 to $180 each to see if it would fix the problem. Obviously, if this did not fix the problem, I cannot return the toner for a refund. I was using a knock off brand that cost me $40.

I found that the problem is a metal shutter that is inside the machine behind the toner cartridge. It is a metal shutter about 1/4 inch by 4 inches that moves up and down to protect the user from the laser. Your shutter is not moving up out of the way of the laser. What I did was grab the center of this shutter with a hemostat (or long thin pliers) so that it bends this shutter just a little bit, then I pushed the shutter upwards with a butter knife. This little bend in the metal shutter causes the shutter to stay in an upright position by friction of metal on metal. Now it copies fine, even with an offbrand toner cartridge. It saved me hundreds of dollars on repairs or replacement parts.

I think that Canon tech knows about this, but they make more money when they replace a whole new laser unit for you or charge you for repairs.

Posted on Mar 16, 2009

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Well chance are they will make you send it back, they will most likely NOT come out since you bought this product from Staples or Office Maxs. If they do tell you that they are coming out , tell them that a Premier Authorized Imageclass Canon dealer, adviced the service technician that they should bring a Laser unit with them or repair yours. Yes we areCanon Authorized Dealers- for the Imageclass series.

The problem with these units are that the Shutter on the laser unit " the spring" breaks or pops off and refuses to open the shutter when the cartidge is installed. So chances are this is a defect from Canon an is a common problem. So tell the Technician from Canon to " BRING A LASER UNIT"

Posted on Mar 06, 2009

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Tip

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This tip works on all Canon Imageclass 6500 series machines including the MF6500 MF6530 MF6531 MF6540 MF6550 MF6560 MF6580 MF6590 and MF6595.
First of all if you are experiencing blank copies and or prints the best thing to do is try a different toner cartridge. In rare cases the black copies/prints CAN be caused by a defective cartridge. In MOST cases it is caused by a broken or detatched laser shutter lever or arm. When a toner cartridge is inserted and the door closed, a small plastic arm opens the laser shutter. If this arm is broken or has become disconnected then the shutter is not opened. This blocks the laser from writing the copy or print image onto the drum and this results in no print being applied to the paper. If the arm is broken you CAN open the laser shutter manually and block it open. What you need to do it open the cartridge access door, remove the cartridge and look for a 1/2 inch wide slot running from left to right in the metal frame that is in the back upper section where the cartridge goes. The plastic arm that operates the black plastic shutter is on the right side. If broken you can manually lift up the shutter and "block" it open using something like a folded up scrap of paper. I know it sounds strange but I have used this repair on several of my customers machines and they have all worked fine since. If you can not find or effect the repair yourself at least you will know where to point the service person when they come out to look at it.
Good Luck and Thank You for using Fixya.

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1 Answer

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Having 2 (defective?) cartridges that behave in exactly the same way seems too unlikely to me. So I have to ask the obvious question....did you pull the seal to release the toner? If it's an original there should be one, if it's remanufactured, there may or may not be one on it.

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Try reseting the drum counter, this also resets Bias voltage, might be your problem. open front cover with power on and press set, arrow to change drom and select yes.

Otherwise it would be a high voltage board problem, possibility alsoexist that it could be laser unit

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Thanks Guest with Best Solultion! OMG! I have had my machine printing blank for over a month now and reading stuff and trying to find a solution. Until finally today I found this page. I read your solution and hit the front like u said for several times and nothing. Finally, after the third try WALA...IT WORKED!!! Thanks again. If anyone has this same problem try this because it really works! Eventhough this is such a strange problem for such an expensive machine.

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