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  1. #1
    Junior Member cnswart's Avatar
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    C6500 shows error 2804

    I have already replaced the developer K , done the toner density sensor initial auto adjust ( no error ) , but when I switch the machine on in normal mode, gives error 2804
    Please help

  2. #2
    Technician richd's Avatar
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    Have you cleaned and checked the Gama sensor ?

  3. #3
    Jr Tech
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    Re: C6500 shows error 2804

    Where is the Gama sensor located?

  4. #4
    Trusted Tech 50+ Posts mervyn's Avatar
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    Re: C6500 shows error 2804

    Call a qualified tech , you can really screw up this machine if you dont know what you are doing.

  5. #5
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    Re: C6500 shows error 2804

    try clean the PGC sensor.

  6. #6
    Service Manager 5,000+ Posts
    C6500 shows error 2804


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    Lightbulb Re: C6500 shows error 2804

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    Paul@justmanuals.com

  7. #7
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    Re: C6500 shows error 2804

    I solved this problem by changing the developer unit complete

  8. #8
    RTFM!! 5,000+ Posts allan's Avatar
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    Re: C6500 shows error 2804

    Quote Originally Posted by mervyn View Post
    Call a qualified tech , you can really screw up this machine if you dont know what you are doing.
    I agree

    Dont work on it if you are not trained for it. Not your avarage office machine. Did you recieve training for it?

  9. #9
    Trusted Tech 50+ Posts
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    Re: C6500 shows error 2804

    This guy got lucky fixing a 2804 code by just replacing the dev unit. Problem WAS NOT the dev unit. Machine had adjusted itself out of its ability to get back.

    Yes indeed you can really put one of these totally out of commission if you do not know what you are doing here.

    Problem can be in charge system, drum potential sensor failure, toner system including addition of toner, developer unit, color registration sensor failure and maybe a printer board or Image Processing board. All of these have to tested and confirmed as working for a sure fix.

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