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  1. #1
    Trusted Tech 50+ Posts White_Toner's Avatar
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    iR2520. display message: insert drum.

    I can't understand how machine checks is drum inside or no? I looked for sensor in service manual, but i do not see special sensor for it. If somebody can explane what is symbol of sensor in SM, or were it placed? Thanks!


  2. #2
    Field Supervisor 500+ Posts Luther's Avatar
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    Re: iR2520. display message: insert drum.

    The message "Insert Drum" is on the display, however, the drum is correctly inserted in the machine. The drum unit had been replaced and the high voltage contacts were clean and not deformed in any way. An "All Clear" was performed as well to no avail.

    Workaround :
    In this case, replacing the H.V.T. resolved the issue.

    FM4-2871-000 iR2535(i)/2545(i)
    FM4-2872-000 iR2525/2530


  3. #3
    Senior Tech 100+ Posts arielcanon's Avatar
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    Re: iR2520. display message: insert drum.

    This error appear if drum bias not contact correctly to contact point of drum (you can see contact point of drum: open drum cartridge, see at the back of drum, there is a leaf spring inside the hole, pull out with a little force). ussually this error come up when replace individual drum not unit. when drum turn, ussually drum will shift to the front leading to poor contact of drum bias. I myself use a small washer with approx 0.8mm to keep drum bias.

    Learning never ends..
    Never give up, where there is a wheel there is a way..

  4. #4
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    Re: iR2520. display message: insert drum.

    Try updating DC CON firmware to latest version. I have solved 10 so far by updating firmware. It changes the threshold for the bias so it will not error out.


  5. #5
    Trusted Tech 50+ Posts White_Toner's Avatar
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    Re: iR2520. display message: insert drum.

    Thanks to all who tried to help! Really the main PWB was broken. Firmware downloading was without sucsess


  6. #6
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    Re: iR2520. display message: insert drum.

    CANON iR2520 display message insert drum


  7. #7
    Junior Member Eng xidig's Avatar
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    Re: iR2520. display message: insert drum.

    Quote Originally Posted by Luther View Post
    The message "Insert Drum" is on the display, however, the drum is correctly inserted in the machine. The drum unit had been replaced and the high voltage contacts were clean and not deformed in any way. An "All Clear" was performed as well to no avail.

    Workaround :
    In this case, replacing the H.V.T. resolved the issue.

    FM4-2871-000 iR2535(i)/2545(i)
    FM4-2872-000 iR2525/2530
    Thanks for your support
    I have solved this issue by replacing HVT
    FM4-2872-000 iR2525
    Thnks alot


  8. #8
    Junior Member
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    Re: iR2520. display message: insert drum.

    I can solve it with a $1.20 part.Don't need to replace Drum or Controller.Reply if you are interested.


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