Resetting 077-909

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  • zara
    Technician
    • Jun 2021
    • 13

    #16
    Re: Resetting 077-909

    Originally posted by CT Copier Repair
    ok sounds like a hose job to me

    RAP 077-909
    IOT semsors detected paper when machine powered on or interlock closed
    if they replaced the sensor and it did not go away then an NVM chain link needs to be reset
    or the interlock(s) have a problem
    did you try a hard power cycle
    turn it off and unplug it
    wait 3 minutes and restart the machine

    I'll fly to australia for what they are going to charge you
    16 hours at 145 an hour

    how to reset NVM chain link

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    • IGEN93
      Technician

      Site Contributor
      • Jul 2018
      • 49

      #17
      Re: Resetting 077-909

      please follow the nvm list with machine .

      enter all the nvm chain link with the default values listed in the list .
      to enter the values , you need to login into diagnostics mode of the machine ,

      press and hold zero button for 10 seconds and press start button on the machines UI .
      enter password 6789
      scroll to tools > maitainance and diagnostics > nvm read write> enter the chain link .

      especially the ohp sensor nvm value77-909 and_or 24-934.pdf xerox 550.pdf

      Comment

      • WIWA
        Technician

        50+ Posts
        • Mar 2009
        • 97

        #18
        Re: Resetting 077-909

        well after reading all an previous post I recommend you take out the whole drawer out and check the drawer and frame rear contacts , may you have an open circuit by damage and when you close the drawer do not make a good one , in my time working with those family found even pieces of paper breaking up the circuit ,also check if one of them broken these new family some are recycle from the previous ones.

        Hope it's help

        Wiwa 72

        Gonzos build v 1.0

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