SHARP MX M283N Laser Fan Keeps Burning Out

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  • mlbcopiers
    Technician
    • Oct 2007
    • 34
    #1

    SHARP MX M283N Laser Fan Keeps Burning Out

    My customer keeps getting the L4-34 code. I have replaced the fan twice in a month now.
    Are there any other reasons for the fan to go. Should I look at a power supply or something.
    Thank you for the help.
    Tags: fan, laser, power, reasons, supply
    • JR2ALTA
      Service Manager

      Site Contributor
      1,000+ Posts
      • Feb 2010
      • 2017
      #2
      Re: SHARP MX M283N Laser Fan Keeps Burning Out

      I would try a PCU board. Typically boards don't cause intermittent problems, unless the fan circuit overheats.

        Comment

        • mansart
          Senior Tech

          Site Contributor
          500+ Posts
          • Apr 2009
          • 851
          #3
          Re: SHARP MX M283N Laser Fan Keeps Burning Out

          When this code appears....

          Go to SIM 6-2 and activate LSUFM

          Does fan operate? If yes then the fan itself is good, it is signal to/from PCU causing issue.

          Manual indicates it is either fan or PCU board

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