konica minolta 421 c3801

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  • brent
    Service Manager

    Site Contributor
    1,000+ Posts
    • Nov 2008
    • 1208
    #1

    konica minolta 421 c3801

    had a quick question for ya'll. I have a machine a ways away with a c3801. the book says it is a low fuser temp. customer says they reset it every day. which is wierd. usually fuser codes stop the machine. do I have athermistor going out? any help would be appreciated. thanks


    brent
    Tags: 421, c3801, front cover, konica, minolta, pressed, touch screen, wrong
    • jrf
      Trusted Tech

      100+ Posts
      • Feb 2009
      • 142
      #2
      We have changed a thermistor to clear this code on a 421 but the machine will need a trouble reset, could somebody have instructed your customer how to do this ?

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        • brent
          Service Manager

          Site Contributor
          1,000+ Posts
          • Nov 2008
          • 1208
          #3
          I don't know for sure. my customer told me that they just either turned the machine off and on. or front door? I know it sounds stupid. but they figured it out. it is a ways out. but I will head out and replace or clean thermistors. the darn thing is only 4 months old



          brent

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            • copytechman
              Senior Tech

              Site Contributor
              500+ Posts
              • Nov 2008
              • 926
              #4
              That doesn't make sense for a fuser code, those can't be reset by a simple on/off or open close front cover, especially front cover! (there aren't any interlocks on it!) Your sure its a 3801 code? (sounds stupid to ask but hey!)

              Regards!
              A.

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                • brent
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Nov 2008
                  • 1208
                  #5
                  Originally posted by copytechman
                  That doesn't make sense for a fuser code, those can't be reset by a simple on/off or open close front cover, especially front cover! (there aren't any interlocks on it!) Your sure its a 3801 code? (sounds stupid to ask but hey!)

                  Regards!
                  A.
                  since I am not there. I am going to ask for sure. that is a good comment. I know how customers get numbers messed up for sure. I sure would hate to go out there on monday and be way prepared for the wrong code. thanks for the advice....

                  brent

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                    • Bullet71
                      Technician
                      • May 2009
                      • 29
                      #6
                      I have had a few machines only a few months old doing the same and the only solution was to change the Thermister kit 50ga-5440. That solved our problems.

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                        • ni311
                          Senior Tech

                          Site Contributor
                          500+ Posts
                          • May 2008
                          • 658
                          #7
                          To reset the error codes for this series, you have to shut down the machine from the main power (the switch behind the front door), start the machine with the 'Utility/Counter' pressed, keep the button down until 'trouble reset' button shows on the touch screen, press on it (you should get a small 'ok' beneath the button), turn off and then on.
                          Konica Minolta Error Codes - Explanations and Solutions

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