Sharp MX-M450N light copies?

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  • nathansipe
    just another tech

    100+ Posts
    • Aug 2009
    • 122
    #1

    Sharp MX-M450N light copies?

    I installed a used Sharp MX-M450N about 2 months ago. After a couple visits of not seeing the light copies they were complaining about, I saw them yesterday. The machine has new, supplies from a working machine with no problems, replaced when the problems started. I stopped a copy on the drum to see that there was only a light amount of toner on the latent image on the drum. The machine prints fine, so copying is when it messes up. If I change the exposure setting SIM 46-2 AE to 90, then it makes an okay copy. Still a little light though. After talking to a coworker, he said to change the exposure to manual and try a copy. It made a perfect copy.

    So I figured the AE sensor was bad. I switched the entire scanner top from another MX-M450N and the problem was still there. Right now, the AE setting is maxed in the key op codes and in SIM 46-2 and it makes a good copy, but Im afraid that it will start to lighten up again. I was told I could change the default exposure from Automatic to Manual. That would work, but I didnt see it anywhere. This seems very weird to me so any suggestions would be appreciated.
    Best rule for troubleshooting.
    K I S S Keep It Simple Stupid
    Tags: ae sensor, amou, codes, copyi, exposure, image, latent, latent image, light copies, scan, scanner, sharp, sharp mx-m450n, system settings, toner
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22997
      #2
      Set 46-02 back to default. Try making your adjustment in 46-18 gamma. You'll get a much larger effect from a smaller change in setting. =^..^=
      If you'd like a serious answer to your request:
      1) demonstrate that you've read the manual
      2) demonstrate that you made some attempt to fix it.
      3) if you're going to ask about jams include the jam code.
      4) if you're going to ask about an error code include the error code.
      5) You are the person onsite. Only you can make observations.

      blackcat: Master Of The Obvious =^..^=

        Comment

        • OMD-227
          #3
          Run a shading adjustment too.

          Changing auto mode to any manual setting would be done in system settings/copy settings/initial status.

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