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Thread: 4002i

  1. #21
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    4002i


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    Re: 4002i

    First thing I would do is make sure all the DV settings in the sims mode are set to factory defaults. If someone has played around with the settings it could create havoc. And now from far left field, your picture reminded me of a problem we had a number of years ago on an older model that looked very similar. Turned out the fuser was not heating properly and the press roller had ridges on it. Apparently the fuser would push unfused toner and then fuse it creating the wavy pattern I saw in your example. Just a thought.

  2. #22
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    Re: 4002i

    What happens if you set "U100/ Set ACAutoAdj" to "OFF" instead of "ON" ?
    System will print with initial values instead of calculated values.
    It's only for analysing...you has to switch back it later.
    Can you share U000 / *.txt file?

  3. #23
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    Re: 4002i

    Quote Originally Posted by KYO_OEM View Post
    What happens if you set "U100/ Set ACAutoAdj" to "OFF" instead of "ON" ?
    System will print with initial values instead of calculated values.
    It's only for analysing...you has to switch back it later.
    Can you share U000 / *.txt file?

    KYO always comes up with some interesting troubleshooting methods. I don't always understand them at first and he has to explain it to me like I'm a child but eventually I seem to get it.

    I have never turned off U100 or adjusted the values of the many ac/dc bias voltages. The manual explains what will happen if the values are changed - print gets lighter or darker.

    Can you explain the thought process behind turning off U100 and how it will aid in identifying the problem? I'm very interested in this. Thanks.
    Embrace the process, not the outcome.

  4. #24
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    Re: 4002i

    depended to the age of parts, current enviroment and so on, system will increase or decrease needed voltages for LK, MC, DV, TR ....
    If you now switch off the auto adjustment, system will run with initial values instead of calculated voltages.
    e.g.
    you can use it if you get white prints.
    I want`s to check if i get needed high voltage on DV.
    If i remove the MC to get 0V potentialon on DK, system will show C510x, because wrong voltage on DK surface
    If you now switch off U100 you get no more c-call and in case of missing MC and 0V on DK surface you get full solid color printout without margins.
    Than you know high voltage for DV is present and you can look for TR or LK.
    In other cases, if DK or DV from Iris would mounted by plugged in power plug, counters wouldn`t set to "0" or else.
    Now you get background because there are total wrong counters and system can`t calculate the needed correct voltages anymore.
    Now with U100/ OFF, sometimes you can get system running until you are able to install new part in the right way.

  5. #25
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    Re: 4002i

    Quote Originally Posted by KYO_OEM View Post
    depended to the age of parts, current enviroment and so on, system will increase or decrease needed voltages for LK, MC, DV, TR ....
    If you now switch off the auto adjustment, system will run with initial values instead of calculated voltages.
    e.g.
    you can use it if you get white prints.
    I want`s to check if i get needed high voltage on DV.
    If i remove the MC to get 0V potentialon on DK, system will show C510x, because wrong voltage on DK surface
    If you now switch off U100 you get no more c-call and in case of missing MC and 0V on DK surface you get full solid color printout without margins.
    Than you know high voltage for DV is present and you can look for TR or LK.
    In other cases, if DK or DV from Iris would mounted by plugged in power plug, counters wouldn`t set to "0" or else.
    Now you get background because there are total wrong counters and system can`t calculate the needed correct voltages anymore.
    Now with U100/ OFF, sometimes you can get system running until you are able to install new part in the right way.

    Very cool. I'm gonna give this a try. I always learn something from you. Thanks.
    Embrace the process, not the outcome.

  6. #26
    Master Of The Obvious 10,000+ Posts
    4002i

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    Re: 4002i

    Quote Originally Posted by KYO_OEM View Post
    depended to the age of parts, current enviroment and so on, system will increase or decrease needed voltages for LK, MC, DV, TR ....
    If you now switch off the auto adjustment, system will run with initial values instead of calculated voltages.
    e.g.
    you can use it if you get white prints.
    I want`s to check if i get needed high voltage on DV.
    If i remove the MC to get 0V potentialon on DK, system will show C510x, because wrong voltage on DK surface
    If you now switch off U100 you get no more c-call and in case of missing MC and 0V on DK surface you get full solid color printout without margins.
    Than you know high voltage for DV is present and you can look for TR or LK.
    In other cases, if DK or DV from Iris would mounted by plugged in power plug, counters wouldn`t set to "0" or else.
    Now you get background because there are total wrong counters and system can`t calculate the needed correct voltages anymore.
    Now with U100/ OFF, sometimes you can get system running until you are able to install new part in the right way.
    We used to do something similar on the Canon analog devices. It was relatively common to get failures of the drum potential sensor, producing a wide variety of quality issues. Turning OFF drum potential reverted all the associated drum potential voltages to factory defaults (lamp current, high voltage, transfer current, developer bias). You could get decent copies until the sensor was changed. The funny thing was that in class we were told that those drum potential sensors were extremely delicate.

    On a whim, I took a malfunctioning DPS and banged it hard against the counter (after all, how could it work worse?). To my surprise it started working. It turns out that about half of them do resume working after a hard bang. =^..^=
    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.
    5) You are the person onsite. Only you can make observations.

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

  7. #27
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    Re: 4002i

    "It turns out that about half of them do resume working after a hard bang."

    Same !
    Hope that helps !
    -Tony


    www.dtios.com
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  8. #28
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    Re: 4002i

    check the contact spring dv dk-mc for me

  9. #29
    Senior Tech 250+ Posts ntbann's Avatar
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    Re: 4002i

    Update: after swapping every part in the machine with no change. We ran U140 AC calibration again and it started working.

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