C300 makes a black square in center when making copies

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • adecanmin
    Trusted Tech

    Site Contributor
    250+ Posts
    • Oct 2010
    • 296

    #1

    C300 makes a black square in center when making copies

    Gentlemen.
    I went to customers office. MFB was bad, no network connection. I replaced board from a used machine with the NVRAM from used machine. Customers machine is working. I took the bad board with the NVRAM to do some troubleshooting. I figured I would have to sacrifice machine since I would not replace the board. As luck would have it I came across a board without the NVRAM pack on it. I put the NVRAM in and I get a black square in the center of the page when I make a copy. It prints fine, scans fine, copies with square. To verify it is NVRAM I briefly put it in an another C300 and it copied the black square. I removed the battery before I came across that board. So I definitely corrupted the NVRAM. When I booted up the machine it was in Japanese. I performed the clear, stop, 07139 * to restore the data. I still got the black square. I did use the NVRAM recovery tool same result. I went through the set up procedure, no luck. Upgraded firmware, no good. Maybe there is something simple I've overlooked.


    Adrien
  • JR2ALTA
    Service Manager

    Site Contributor
    1,000+ Posts
    • Feb 2010
    • 2030

    #2
    Re: C300 makes a black square in center when making copies

    Is this similar to your black square?

    square.jpg

    Comment

    • adecanmin
      Trusted Tech

      Site Contributor
      250+ Posts
      • Oct 2010
      • 296

      #3
      Re: C300 makes a black square in center when making copies

      I think I missed something in the set up. I'll go through the set up again.


      Adrien

      Comment

      • brent
        Service Manager

        Site Contributor
        1,000+ Posts
        • Nov 2008
        • 1212

        #4
        Re: C300 makes a black square in center when making copies

        kind of confused me with changing all the nav ram but typically if a black square is reproduced. there was a step missing in the installation. go back and perform installation procedures again... it should take care of it

        brent

        Comment

        • adecanmin
          Trusted Tech

          Site Contributor
          250+ Posts
          • Oct 2010
          • 296

          #5
          Re: C300 makes a black square in center when making copies

          I did make it a little confusing with all the NVRAM talk. This is the first time I've had to mess with it. I did learn a bunch however.


          Adrien

          Comment

          Working...