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Thread: 4002 C6600

  1. #1
    Field Supervisor 500+ Posts Geo's Avatar
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    4002 C6600

    Hi Folks


    Has anybody bothered to figure out why these fuser will give a C6600 or C6670 error after being shut down overnight.. The codes will clear with a power cycle and will work for the entire day or even days..Then it pops up again. Fuser age/clicks ( 20-300 k) don't seem to be a factor .

    Thanks

  2. #2
    Service Manager 5,000+ Posts
    4002 C6600

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    Re: 4002 C6600

    Quote Originally Posted by Geo View Post
    Hi Folks


    Has anybody bothered to figure out why these fuser will give a C6600 or C6670 error after being shut down overnight.. The codes will clear with a power cycle and will work for the entire day or even days..Then it pops up again. Fuser age/clicks ( 20-300 k) don't seem to be a factor .

    Thanks
    Have you tried updating the firmware ?
    Let us eat, drink, and be merry, because tomorrow we may die!

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  3. #3
    Technician davidmtupper's Avatar
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    Re: 4002 C6600

    The grease in the bearings/bushings is starting to fail. Power cycling the copier gives enough of a surge to break it loose and get it running for the day. Do yourself and your customer a favor and replace the fuser because it WILL fail, sooner rather than later. Wear gloves while doing this as the grease leaks at both ends and stains your hands, it also drops chunks so don't set the fuser on anything you care about.

  4. #4
    Field Supervisor 500+ Posts Geo's Avatar
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    Re: 4002 C6600

    Quote Originally Posted by copier tech View Post
    Have you tried updating the firmware ?
    Yes...It seems as if there is a timing issue or perhaps a thermistor gets a little weak ,

  5. #5
    Field Supervisor 500+ Posts Geo's Avatar
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    Re: 4002 C6600

    Quote Originally Posted by davidmtupper View Post
    The grease in the bearings/bushings is starting to fail. Power cycling the copier gives enough of a surge to break it loose and get it running for the day. Do yourself and your customer a favor and replace the fuser because it WILL fail, sooner rather than later. Wear gloves while doing this as the grease leaks at both ends and stains your hands, it also drops chunks so don't set the fuser on anything you care about.
    I always replace the unit, but I'm curious as to the why..Not sure I can agree with your diagnosis for all cases . . I have had the code pop up at 60 K and the bearings "seemed" OK..I know the condition you are talking about .Wearing gloves is a must unless you want stained hands.

    Thanks

  6. #6
    Technician davidmtupper's Avatar
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    Re: 4002 C6600

    6600 code is the fuser not turning. Since this usually occurs once the grease starts leaking it's probably related pretty closely, although I have seen that code with a torn belt at least twice. I have yet to have one where that code is fixed without replacing the fuser.

  7. #7
    Owner/Service Manager 1,000+ Posts
    4002 C6600

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    Re: 4002 C6600

    Turning U346 to off helps. The inside of the upper heat belt gets worn and doesn't drive to turn as it should. Rather than letting it run continuously, that code will stop it after it's done.
    Hope that helps !
    -Tony


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  8. #8
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    Re: 4002 C6600

    I agree with tmaged,
    take a look for 2nd and 3rd value from U167 and you will see very high counter from released runtime against pressed runtime.
    The belt will slip if 2nd value is too high.
    U346 will stop driving when jobs are finished and life time will increase.

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