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  1. #1
    Senior Tech 100+ Posts
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    minneapolis, MN
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    8000i fuser fault after opening door

    Getting a C6720( fuser ih belt rotation error) every time any of the right side doors are opened and then closed.

    Swapped fuser with known good fuser, checked rotation sensor wire harness in fusers(per bulletin), updated firmware, replaced fuser drive motor assembly, checked connection of YC26 on engine pwb, checked for pinched wires, loose connections.

    Once the error is reset, the machine will boot, and run hundreds of prints, until it jams, once a door is opened to remove jam, closes the door, the fuser faults. Or even while the machine is sitting at ready, if I open the main large door, or either of the 2 lower doors, once closed, faults.

    Also if I press the energy saver button, the machine instantly throws a C6770 (fuser ih low electrical power)

    My next steps will be to replace the fuser ih pwb, then the engine pwb.

    Let me know

    Thanks
    MNTech

    Sent from my SM-G955U using Tapatalk


  2. #2
    Technician
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    Solomons, MD
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    Re: 8000i fuser fault after opening door

    Quote Originally Posted by mntech View Post
    Getting a C6720( fuser ih belt rotation error) every time any of the right side doors are opened and then closed.

    Swapped fuser with known good fuser, checked rotation sensor wire harness in fusers(per bulletin), updated firmware, replaced fuser drive motor assembly, checked connection of YC26 on engine pwb, checked for pinched wires, loose connections.

    Once the error is reset, the machine will boot, and run hundreds of prints, until it jams, once a door is opened to remove jam, closes the door, the fuser faults. Or even while the machine is sitting at ready, if I open the main large door, or either of the 2 lower doors, once closed, faults.

    Also if I press the energy saver button, the machine instantly throws a C6770 (fuser ih low electrical power)

    My next steps will be to replace the fuser ih pwb, then the engine pwb.

    Let me know

    Thanks
    MNTech

    Sent from my SM-G955U using Tapatalk
    There is a circuit board on the front of the machine. Check the connectors. I think its called Front PWB


  3. #3
    Master Of The Obvious 10,000+ Posts
    8000i fuser fault after opening door

    blackcat4866's Avatar
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    Lapeer, Michigan
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    Re: 8000i fuser fault after opening door

    Quote Originally Posted by mntech View Post
    ... My next steps will be to replace the fuser ih pwb, then the engine pwb.

    Let me know

    Thanks
    MNTech ...
    Overall, I like your choice.

    I would also meter out all your doorswitches (not just a service mode test, but a real Ohmmeter). =^..^=

    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.


    blackcat: Master Of The Obvious =^..^=

  4. #4
    Senior Tech 250+ Posts
    8000i fuser fault after opening door


    Join Date
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    Concord, NH
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    Re: 8000i fuser fault after opening door

    Quote Originally Posted by mntech View Post
    Getting a C6720( fuser ih belt rotation error) every time any of the right side doors are opened and then closed.

    Swapped fuser with known good fuser, checked rotation sensor wire harness in fusers(per bulletin), updated firmware, replaced fuser drive motor assembly, checked connection of YC26 on engine pwb, checked for pinched wires, loose connections.

    Once the error is reset, the machine will boot, and run hundreds of prints, until it jams, once a door is opened to remove jam, closes the door, the fuser faults. Or even while the machine is sitting at ready, if I open the main large door, or either of the 2 lower doors, once closed, faults.

    Also if I press the energy saver button, the machine instantly throws a C6770 (fuser ih low electrical power)

    My next steps will be to replace the fuser ih pwb, then the engine pwb.

    Let me know

    Thanks
    MNTech

    Sent from my SM-G955U using Tapatalk
    Your next step replacements are logical. The C6770 code when going into energy saver mode however would direct me to the engine board.


  5. #5
    Senior Tech 100+ Posts
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    Aug 2010
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    minneapolis, MN
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    Re: 8000i fuser fault after opening door

    Fuser IH PWB replacement resolved both issues. Thanks

    Sent from my SM-G955U using Tapatalk


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