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Thread: Ricoh MP7500

  1. #1
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    Ricoh MP7500

    Hi!

    SC220? What is this? The official MP7500 service manual say nothing!


  2. #2
    Service Manager 1,000+ Posts
    Ricoh MP7500

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    Re: Ricoh MP7500

    It's in there, but you were probably looking at the B064 section. The B140/B246/D052 is further down in the manual, which has this.....

    220 Laser synchronization detection error

    The 1st laser synchronization detection
    unit could not detect the line
    synchronization signal (DETP0) within
    500 ms while the polygon mirror motor
    was operating at normal speed.

    NOTE
    : The unit polls for the signal
    every 50 ms. This SC is issued after the
    10th attempt fails to detect the signal.

    B246/D052
    Laser synchronization board
    connector loose, broken, defective
    Laser synchronization detection
    board is not installed correctly (out
    of alignment)
    Laser synchronization board
    defective
    IPU defective


  3. #3
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    So many thanks for your help


  4. #4
    Service Manager 1,000+ Posts Llama God's Avatar
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    Re: Ricoh MP7500

    Quote Originally Posted by earth81 View Post
    Hi!

    SC220? What is this? The official MP7500 service manual say nothing!
    It's usually the laser sync detector board (accessed from the right hand side of the machine, above the bypass behind 2 fans above the dev unit) or the laser diode unit, or the polygon mirror motor. I've had all three, unfortunately.


  5. #5
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    Re: Ricoh MP7500

    SC220? What is this?I want the official MP7500 service manual


  6. #6
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    Re: Ricoh MP7500

    Replace laser diode from aficio 1060 to mp 5500 6500...

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