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Thread: Screen black

  1. #1
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    Screen black

    I am working on a Ricoh MPC 2000 (actually Lanier LD420C) same thing I have green power light on red alert light red light on printer button but my display on op-panel is dark no light at all, I have tried a new operation panel with no luck, any hints on what to try next I was told to try polygon mirror motor because it may be indicating an SC 220 code which could cause a dark screen but I cant get into Web Monitor to verify any SC codes although it does beep like it has an SC code when turned on. Any help is appreciated. Thx all.

  2. #2
    The New Guy 1,000+ Posts ruben's Avatar
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    Re: Screen black

    Have you tried shining a torch onto the screen? The SC code may still be visible; the screen won't have the backlight on.

  3. #3
    Senior Tech 100+ Posts
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    Re: Screen black

    Have a look at SC 202 in the FSM, ant the related RTB.

  4. #4
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    Re: Screen black

    Your power supply is cactus, replace the power supply....

  5. #5
    Senior Tech 250+ Posts
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    Re: Screen black

    Black screen on MPC2000 occurs even when Fuse NR4 is blown on the PSU.

  6. #6
    Field Supervisor 500+ Posts Zeldaman's Avatar
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    Re: Screen black

    Hi there!
    For 99% the polygon-motorīs gone & probably the BICU-PWB, had this last week!
    Greetings...

  7. #7
    Service Manager 5,000+ Posts
    Screen black


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    Lightbulb Re: Screen black

    This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:

    Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads


    Paul@justmanuals.com

  8. #8
    Service Manager 250+ Posts turbojetboy's Avatar
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    Re: Screen black

    Quote Originally Posted by Zeldaman View Post
    Hi there!
    For 99% the polygon-motorīs gone & probably the BICU-PWB, had this last week!
    Greetings...
    Correct, you must repl polygon motor assy and BICU AT THE SAME TIME BEFORE SWITCHING BACK ON, or else you will blow the BICU again. This is now a common sight accross the range from 2500 through to 5000.
    Last edited by turbojetboy; 11-12-2012 at 11:55 PM. Reason: spelling

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