MFC-8950w with " print unable 7a"

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • axyun
    Service Manager

    Site Contributor
    1,000+ Posts
    • Aug 2007
    • 1323
    #1

    MFC-8950w with " print unable 7a"

    Had 2 mfc-8950dw in my shop. One worked and one had no power.
    Swapped LVPS from good machine
    and got 2nd machine to work.

    Ordered LVPS from Brother and installed into machine which was originally working. Now have "print unable 7A" message. Double checked connectors and okay.

    Your help is appreciated very much. Frank/ Action
    Tags: lvps, print, unable
    • VBC
      #2
      Re: MFC-8950w with " print unable 7a"

      I think you have error code 7A00
      1- connection failure main motor harness
      2-main motor failure
      3-main pcb failure

      I would double check the connections and reseat every connector

        Comment

        • axyun
          Service Manager

          Site Contributor
          1,000+ Posts
          • Aug 2007
          • 1323
          #3
          Re: MFC-8950w with " print unable 7a"

          Thank you for yor input VBC. I did not see 00 after the 7A unless I need the pesos something to get a sub coe. I did carefully check the 2 connectors for the LVPS.. The one on the left is hard to work with as Brother did not leave any play but it is connected good. Those were the only connectors I disconnected when removing and installing LVPS. I will check again to be sure. and make sure nothing is stressing motor. Frank

            Comment

            • Phil B.
              Field Supervisor

              10,000+ Posts
              • Jul 2016
              • 22808
              #4
              Re: MFC-8950w with " print unable 7a"

              Originally posted by axyun
              Thank you for yor input VBC. I did not see 00 after the 7A unless I need the pesos something to get a sub coe. I did carefully check the 2 connectors for the LVPS.. The one on the left is hard to work with as Brother did not leave any play but it is connected good. Those were the only connectors I disconnected when removing and installing LVPS. I will check again to be sure. and make sure nothing is stressing motor. Frank
              double check the connectors on the other boards.. you might have knocked one loose

                Comment

                • axyun
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Aug 2007
                  • 1323
                  #5
                  Re: MFC-8950w with " print unable 7a"

                  thanks Phil

                    Comment

                    • chemicalx50
                      Technician
                      • Apr 2014
                      • 33
                      #6
                      Re: MFC-8950w with " print unable 7a"

                      Symptom: Machine has "Print Unable 7A" on the display.
                      Possible cause: Synchronized signal of the main motor cannot be detected.

                      Recommendation: Replace parts in the listed order.

                      1. Main Motor
                      2. Main PCBSteps for Main Motor Replacement
                      *or check connectors*

                        Comment

                        • axyun
                          Service Manager

                          Site Contributor
                          1,000+ Posts
                          • Aug 2007
                          • 1323
                          #7
                          Re: MFC-8950w with " print unable 7a"

                          I removed and reconnected connectors and machine is working now. Thanks to all. Frank

                            Comment

                            Previous template Next
                            Working...