Canon ir2520 e247

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  • mramlawi
    Senior Tech

    500+ Posts
    • Jul 2011
    • 838

    #1

    Canon ir2520 e247

    Dear all ,
    im facing a weird problem , i have an ir2520 copier which is working normally and i have another one which need main control PCB , my technician dessamble the main PCb from the working one to put it on the 2nd machine then the machine give him e247,then he tried to turned back the Board to the working machine again it gave him e247 , as i read the manual it said its a Sram problem what shell i do in this problem then , i lost the 2nd machine i tried to make update for the boot rom and language but same error happen .i cleared the error but same problem ,plz help .
    Distinguished road makes you jewel in rough
  • hsrmms
    Technician

    50+ Posts
    • Dec 2014
    • 69

    #2
    Re: Canon ir2520 e247

    Originally posted by mramlawi
    Dear all ,
    im facing a weird problem , i have an ir2520 copier which is working normally and i have another one which need main control PCB , my technician dessamble the main PCb from the working one to put it on the 2nd machine then the machine give him e247,then he tried to turned back the Board to the working machine again it gave him e247 , as i read the manual it said its a Sram problem what shell i do in this problem then , i lost the 2nd machine i tried to make update for the boot rom and language but same error happen .i cleared the error but same problem ,plz help .
    Mismatched checksum between the Flash Rom and the FRAM

    Comment

    • mramlawi
      Senior Tech

      500+ Posts
      • Jul 2011
      • 838

      #3
      Re: Canon ir2520 e247

      Originally posted by hsrmms
      Mismatched checksum between the Flash Rom and the FRAM
      I read that on the service manual but how can i solve it
      Distinguished road makes you jewel in rough

      Comment

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