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  1. #1
    Service Manager 1,000+ Posts
    C759 IU life not reset


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    C759 IU life not reset

    I changed a set of IUs in a C759

    One was clipped in properly and gave a C2255 error. I reseated and all was ok how ever IU life did not reset

    The install and yeild prediction date are the same and match the date of install yesterday.

    Any ideas on how to get around this?

    Sent from my Pixel 4 XL using Tapatalk

  2. #2
    Service Manager 2,500+ Posts tsbservice's Avatar
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    Re: C759 IU life not reset

    FW latest and correct function version chosen?
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

  3. #3
    Service Manager 5,000+ Posts
    C759 IU life not reset

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    Re: C759 IU life not reset

    Quote Originally Posted by rrrohan View Post
    I changed a set of IUs in a C759

    One was clipped in properly and gave a C2255 error. I reseated and all was ok how ever IU life did not reset

    The install and yeild prediction date are the same and match the date of install yesterday.

    Any ideas on how to get around this?

    Sent from my Pixel 4 XL using Tapatalk
    I would say that when the machine threw the error it corrupted the count.

    But this is no big deal, put a label on the drum with the current counter.

    As mentioned above you could try updating the firmware & function version.


    Let us eat, drink, and be merry, because tomorrow we may die!

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    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  4. #4
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    Re: C759 IU life not reset

    Quote Originally Posted by rrrohan View Post
    I changed a set of IUs in a C759

    One was clipped in properly and gave a C2255 error. I reseated and all was ok how ever IU life did not reset

    The install and yeild prediction date are the same and match the date of install yesterday.



    Any ideas on how to get around this?

    Sent from my Pixel 4 XL using Tapatalk

    Details of Each Function-New Release Disable mode
    To enable a unit that is temporarily used for troubleshooting or other purposes to be used again as a new unit in another machine, New
    Release Disable mode is provided.
    Applicable units are the following that have the new unit detection feature.
    Imaging unit/Y, M, C, Drum unit/K, Developing unit/K
    (a) Procedure
    1. Open the lower front door.
    2. Touch [Service Mode] -> [Enhanced Security] -> [Engine FW DipSW].
    3. Touch [3] and check the key is highlighted (ON state) in reverse video.
    4. Touch [OK].
    5. Close the lower front door.
    By closing the lower front door, the New Release Disable mode takes effect.

  5. #5
    Service Manager 2,500+ Posts tsbservice's Avatar
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    Thumbs up Re: C759 IU life not reset

    Quote Originally Posted by byronf View Post
    Details of Each Function-New Release Disable mode
    To enable a unit that is temporarily used for troubleshooting or other purposes to be used again as a new unit in another machine, New
    Release Disable mode is provided.
    Applicable units are the following that have the new unit detection feature.
    Imaging unit/Y, M, C, Drum unit/K, Developing unit/K
    (a) Procedure
    1. Open the lower front door.
    2. Touch [Service Mode] -> [Enhanced Security] -> [Engine FW DipSW].
    3. Touch [3] and check the key is highlighted (ON state) in reverse video.
    4. Touch [OK].
    5. Close the lower front door.
    By closing the lower front door, the New Release Disable mode takes effect.
    Good idea byronf. Maybe previous engineer activated New Release Disable mode and left the machine.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

  6. #6
    Senior Tech 250+ Posts Max's Avatar
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    Re: C759 IU life not reset

    It doesn't last indefinitely. It reverts back to normal mode fairly quickly.

  7. #7
    Service Manager 1,000+ Posts
    C759 IU life not reset


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    Re: C759 IU life not reset

    Yeah it wasn't that. I just installed a new drum on same copier and counts for that reset. IUs still incorrect

    Sent from my Pixel 4 XL using Tapatalk

  8. #8
    Service Manager 1,000+ Posts
    C759 IU life not reset


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    Re: C759 IU life not reset

    i just had it on another c759 today
    IMG-20210603-WA0005.jpg

  9. #9
    Service Manager 1,000+ Posts
    C759 IU life not reset


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    Re: C759 IU life not reset

    i just checked on CSRC status of the original copier in question and its giving conflicting info

    Device Home is reporting Parts Life warning on CYM IU but PM parts show 58% which is correct1.jpg2.jpg

  10. #10
    Senior Tech 250+ Posts
    C759 IU life not reset


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    Re: C759 IU life not reset

    As far as I know, there would be no reason why a new Drum Unit would not reset its respective life settings. UNLESS you were using generic, non-OEM units whose chips did not jive with the machine, for whatever reason. And remember, although you may have new units in there, the machine will still think the units are old and still try to adjust CQ accordingly. If they were OEM units, I would also double check that the chip(s) are not bent down and not contacting the frame for whatever reason.
    OC

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