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  1. #1
    Senior Tech 250+ Posts fbkhan3's Avatar
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    MP 8000 Error SC990

    I have MP 8000 throwing SC990.

    Originally had SC220, Replaced Polygon Mirror Motor and BCU(D054-5122)with old (EPROM) which fixed the Laser error.
    Now it continuously throws
    SC990,

    Details
    LINE : 1141
    VAL: 995
    FILE: ENG: device.c

    1:Firmware flashed.
    D0545127E/Engine
    B2475101Z/System/Copy

    2: HDD Replaced

    3: Maintenance Kits are All New

    4: PM counters 0

    went through goose Guide and done/checked all related things .

    Kindly suggest if i need to replace controller or is there anything else which can be a fix.


    Regard's

  2. #2
    Trusted Tech 50+ Posts trc's Avatar
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    Re: MP 8000 Error SC990

    Do you have in 7-403 other SC´s with the same counter? The laser unit is new or it belongs to other machine?

  3. #3
    Senior Tech 250+ Posts fbkhan3's Avatar
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    Re: MP 8000 Error SC990

    Laser is from another working machine, and SC history is all 990 and 991.

    Regard's

  4. #4
    Professional Moron 2,500+ Posts TonerMunkeh's Avatar
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    Re: MP 8000 Error SC990

    Another Martini of the same age, i.e. 6000/7000 or another range, i.e. 6001?
    It's 106 miles to Chicago. We've got a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses.

    Hit it.

  5. #5
    Senior Tech 250+ Posts fbkhan3's Avatar
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    Re: MP 8000 Error SC990

    Thank you very much TonerMunkeh

    Laser unit is from 7000,brand new mirror motor and BCU ordered from Ricoh.

    Regard's

  6. #6
    Senior Tech 250+ Posts kannuki2's Avatar
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    Re: MP 8000 Error SC990

    Sc 220 is caused by two things.

    1. Check the condition of IPU BCU Harness (B247 5451) if damaged replace it
    2. The laser diode board B2471859 is defective.

    Check for bent pin on the laser connectors.

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