MX 6070 Interesting problem

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  • Larhal
    Semi Retired

    Site Contributor
    VIP Subscriber
    500+ Posts
    • May 2013
    • 536
    #1

    [Electrical] MX 6070 Interesting problem

    Hi All,
    As I am retired now but keep reading the posts on Copytechnet as I find them very interesting and you guys have so much information which make this a fantastic forum.

    I have a friend in the UK who sent me this picture of a MX 6071 Toner motor unit that has fried the chip contact. He has aske me if I have ever seen something like this before. As I really did not know much about Sharp units I could not help him. Maybe some of you can enlighten me in the correct direction. All consumables were original.


    MX6071.jpg
    Larhal

    Retired Part Time

    If all else fails read the Service Manual!

    If that fails, meet me at the pub and we will discuss it.
    Tags: aske, chip, fried, interesting, original
    • Hansen88
      Service Manager

      Site Contributor
      1,000+ Posts
      • Dec 2009
      • 1050
      #2
      Re: MX 6070 Interesting problem

      I have never seen anything like that.It should not even get hot there. Maybe the wires were pinched or something and they got shorted out?

        Comment

        • Larhal
          Semi Retired

          Site Contributor
          VIP Subscriber
          500+ Posts
          • May 2013
          • 536
          #3
          Re: MX 6070 Interesting problem

          Originally posted by Hansen88
          I have never seen anything like that.It should not even get hot there. Maybe the wires were pinched or something and they got shorted out?
          I agree with you. Looks like the chip caused the melt. But that is a low voltage unit. Looks so unusual.
          Larhal

          Retired Part Time

          If all else fails read the Service Manual!

          If that fails, meet me at the pub and we will discuss it.

            Comment

            • Larhal
              Semi Retired

              Site Contributor
              VIP Subscriber
              500+ Posts
              • May 2013
              • 536
              #4
              Re: MX 6070 Interesting problem, Had a thought!

              In reading some more in the Sharp area of this site along with my friend telling me the machine also had a L4-11 and L4-77 code. These are related to the PCU PWB. That PWB also is connected to the chip reader. I was wondering if the problems with the 2 motors and the chip reader were some how related to the problem with the PCU PWB or the Grounding system that is supposed to eliminate the static build up from damaging the PCU PWB and sending high voltages to these circuits causing the melt down?
              Larhal

              Retired Part Time

              If all else fails read the Service Manual!

              If that fails, meet me at the pub and we will discuss it.

                Comment

                • travi
                  Trusted Tech

                  Site Contributor
                  100+ Posts
                  • Jan 2008
                  • 129
                  #5
                  Re: MX 6070 Interesting problem

                  I had a MX6071 do this six weeks ago. Customer was using non-OEM toner. Replaced Toner motor assembly and PCU board

                    Comment

                    • Craigcul
                      Technician

                      50+ Posts
                      • Aug 2017
                      • 70
                      #6
                      Re: MX 6070 Interesting problem

                      Yes we also had this fault 4 machines CR4.5 colour and BW (non OEM toner all units) toner motor unit, crumb chip harness and PCU Pwb had to be replaced of cause toner supplier say never seen this before - ye right.

                        Comment

                        • Hansen88
                          Service Manager

                          Site Contributor
                          1,000+ Posts
                          • Dec 2009
                          • 1050
                          #7
                          Re: MX 6070 Interesting problem

                          What kind of generic toner were you all using,just wondering if it is all from the same brand?

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