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  1. #1
    Service Manager 1,000+ Posts
    WC 5855 Slight Grey Background

    mrfuser's Avatar
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    WC 5855 Slight Grey Background

    Ok, we swapped DV unit, Xerographic Module (drum), corona and cleaned everything. Same result. Slight grey background. Happens on print and copy and even test prints out of diagnostics.

    Any ideas?

    K


  2. #2
    Service Manager 2,500+ Posts
    WC 5855 Slight Grey Background

    Phil B.'s Avatar
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    Re: WC 5855 Slight Grey Background

    Quote Originally Posted by mrfuser View Post
    Ok, we swapped DV unit, Xerographic Module (drum), corona and cleaned everything. Same result. Slight grey background. Happens on print and copy and even test prints out of diagnostics.

    Any ideas?

    K
    the drum has a crum chip on it.. did you use new drum or a pull?

    have you re-calibrated the system?

    block the toner supply to the dev unit... run about 50 sky shots and then open up the toner supply back to dev unit.. let it load toner and re-cali... sounds like dev unit is not picking up the new change in bias charge.


  3. #3
    Service Manager 1,000+ Posts
    WC 5855 Slight Grey Background

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    Re: WC 5855 Slight Grey Background

    No real way to block toner on these other than remove cartridge.
    What procedure are you speaking of in RE - Calibrate?


  4. #4
    Service Manager 2,500+ Posts
    WC 5855 Slight Grey Background

    Phil B.'s Avatar
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    Re: WC 5855 Slight Grey Background

    Quote Originally Posted by mrfuser View Post
    No real way to block toner on these other than remove cartridge.
    What procedure are you speaking of in RE - Calibrate?
    blocking toner supply... sky shots.. letting the machine reset bias in the developer


  5. #5
    Service Manager 1,000+ Posts
    WC 5855 Slight Grey Background

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    Re: WC 5855 Slight Grey Background

    Quote Originally Posted by mrfuser View Post
    No real way to block toner on these other than remove cartridge.
    What procedure are you speaking of in RE - Calibrate?
    dc131 - increase 791-007 nvm from 396 to 450 even 470.
    May be you are lucky man !


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