Brother MFC-J6910 Error Code 75

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  • dzewo
    Technician
    • Oct 2013
    • 36
    #1

    [Error Code] Brother MFC-J6910 Error Code 75

    Good day

    MFC-J6910 had a damaged Maintenance Assy so a new one (plus ASF drive Assy) was ordered. Now the MFC greets me with error 75 (unable to clean 75) every time it boots.

    1. There are no foreign objects in the printer
    2. Carriage motor operates
    3. New ASF Assy + new Maintenance Assy installed

    I would be grateful for any advice on how to tackle this problem.
    Tags: None
    • Phil B.
      Field Supervisor

      10,000+ Posts
      • Jul 2016
      • 22801
      #2
      Re: Brother MFC-J6910 Error Code 75

      What we have here is a head capping failure ... recheck your install of the maintenance unit.. connections to the carriage drive motor .. ASF drive assembly.. or something blocking the path

        Comment

        • dzewo
          Technician
          • Oct 2013
          • 36
          #3
          Re: Brother MFC-J6910 Error Code 75

          Done that already. The carriage moves on its own from left to right when the MFC is turned on. It also docks the maintenance unit.

            Comment

            • Elmtech
              Trusted Tech

              100+ Posts
              • Nov 2013
              • 155
              #4
              Re: Brother MFC-J6910 Error Code 75

              Check for a dirty carriage encoder strip. If it gives a false reading the machine will think the carriage is obstructed.

                Comment

                • Phil B.
                  Field Supervisor

                  10,000+ Posts
                  • Jul 2016
                  • 22801
                  #5
                  Re: Brother MFC-J6910 Error Code 75

                  Originally posted by dzewo
                  Done that already. The carriage moves on its own from left to right when the MFC is turned on. It also docks the maintenance unit.
                  BUT does the cap move up to meet the carriage? just because it "docks" doesn't mean the caps move up.. I had to go behind another tech and straighten this same issue out from his work.

                    Comment

                    • Phil B.
                      Field Supervisor

                      10,000+ Posts
                      • Jul 2016
                      • 22801
                      #6
                      Re: Brother MFC-J6910 Error Code 75

                      Originally posted by Elmtech
                      Check for a dirty carriage encoder strip. If it gives a false reading the machine will think the carriage is obstructed.
                      that would be a code 76.
                      the encoder strip could be dirty or behind the optical sensor causing a 76 error

                        Comment

                        • dzewo
                          Technician
                          • Oct 2013
                          • 36
                          #7
                          Re: Brother MFC-J6910 Error Code 75

                          Originally posted by Phil B.
                          BUT does the cap move up to meet the carriage? just because it "docks" doesn't mean the caps move up.. I had to go behind another tech and straighten this same issue out from his work.
                          It does rise. I'll upload a movie showing the behaviour of the printer.

                          Check for a dirty carriage encoder strip. If it gives a false reading the machine will think the carriage is obstructed.
                          Did that too, even though it is connected with error 76 rather than 75.

                            Comment

                            • Phil B.
                              Field Supervisor

                              10,000+ Posts
                              • Jul 2016
                              • 22801
                              #8
                              Re: Brother MFC-J6910 Error Code 75

                              Originally posted by dzewo
                              It does rise. I'll upload a movie showing the behaviour of the printer.



                              Did that too, even though it is connected with error 76 rather than 75.
                              so are you getting BOTH error codes or has it now switched?

                                Comment

                                • dzewo
                                  Technician
                                  • Oct 2013
                                  • 36
                                  #9
                                  Re: Brother MFC-J6910 Error Code 75

                                  Originally posted by Phil B.
                                  so are you getting BOTH error codes or has it now switched?
                                  No, only error 75.

                                  The machine in action.


                                  Does anyone see any unusual behaviour?

                                    Comment

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