SF7850 can't reset h4

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  • pjdbm
    Trusted Tech

    250+ Posts
    • Sep 2007
    • 360

    #16
    Re: SF7850 can't reset h4

    Hey Frank,sorry I missed this thread,I use to work on a lot of these machines.You are going crazy with these switches but why cant you test each individual key to see if it works?

    enter 44 and hit clear,if it clears the key works, press 10,see if zero works,if it works hit clear again,all will go,next enter 22,then press interupt,if it allows you to make a copy "in interupt mode" you have test all keys and all is well.

    if all keys are known good,do the sequence fast and do it 5 or 6 times in a row,the 7800 was sometimes a pain to get into service.

    If you still have issues Frank try to short out the battery,or pull the battery if it is not soldered,I forgot it has been too long.\


    I have backdoor codes somewhere,if you need anything let me know

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    • axyun
      Service Manager

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

      #17
      Re: SF7850 can't reset h4

      Thanks Phil. I am supposed to go there today with a replacement machine. I put 3 new switches in last thursday and couldn't get into sim so decided to cut my losses and take another route. I wish you a Happy, Healthy and Prosperous New Year. Frank

      Comment

      • axyun
        Service Manager

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

        #18
        Re: SF7850 can't reset h4

        Replace 8 track player with casette(SF2030) player and customer is happy.Frank

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