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  1. 10-16-2017 #1
    ps22sp
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    riso rz 390 output problem

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    riso rz 390 output problem

    the center area output image darker , uneven image shown
    any comment and advice are welcome
    thanks
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  2. 10-19-2017 #2
    jermyth
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    Re: riso rz 390 output problem

    Impression roller is my first guess, needs cleaned or replaced. To clean, remove from machine and carefully scrap the ink built up off with a dull edged utensil like a metal ruler.
    Good luck.
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  3. 07-18-2019 #3
    ps22sp
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    riso rz 390 output problem

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    Re: riso rz 390 output problem

    Quote Originally Posted by jermyth View Post
    Impression roller is my first guess, needs cleaned or replaced. To clean, remove from machine and carefully scrap the ink built up off with a dull edged utensil like a metal ruler.
    Good luck.
    \
    problem solved
    clean the screen inside
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