MBM 1307A Folder

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  • mikadonovan
    Senior Tech

    Site Contributor
    2,500+ Posts
    • May 2008
    • 2931

    #1

    MBM 1307A Folder

    Hi, All. This is about a 307A, not 1307a. The original reason for the call on this machine was it wouldn't switch from z to half fold. I found the upper fold tray paper stopper was driving past the limit switch into the reg roller area.It would overload the motor, stop, and show a misfeed in reg roller area. If I manually backed the paper stopper fence and reset the misfeed indication, it would work. I disassembled both trays and checked the limit switches (good) and cleaned the chopper disk sensors. After reassembly, It drove the stopper past the limit switch again. I rebooted the unit and tested all folds. It ran hundreds of each fold without a hitch. Fixed? Maybe. Has anyone seen this before? I expect the problem to return, and I need to know where to go from here. Thanks.
    NEVER ASSUME ANYTHING
  • Iowatech
    Not a service manager

    2,500+ Posts
    • Dec 2009
    • 3930

    #2
    Re: MBM 1307A Folder

    I don't work on MBM equipment that often, so take this with a grain of salt, please.
    Still, if the machine is working correctly for a number of different folds you should be good to go.
    For what it is worth, I think there is a photointerupter sensor in each of the folding trays that use encoders to determine how the tray adjusts to different folds. Might not hurt to keep an eye on those. While I haven't seen the sensors actually cause problems, if I have the trays apart to the point I can see them I always direct a good blast of air in their direction.

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    • mikadonovan
      Senior Tech

      Site Contributor
      2,500+ Posts
      • May 2008
      • 2931

      #3
      Re: MBM 1307A Folder

      Update: It looks like the main pcb took a dump. Considering the board cost is 1/3 of a new folder, and 7 years old we replaced the unit.
      NEVER ASSUME ANYTHING

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