Savin 9920 Polygon Motor Novice Question

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  • novice

    #1

    Savin 9920 Polygon Motor Novice Question

    Hello all,
    I am not a full time copy repair person - yet I have an old Savin 9920 with a bad polygon mirror motor or connection.

    There are numerous warnings about laser damage to your eye if you improperly handle the components.

    Is this only when the machine is powered on? Or is there any residual charge stored and potentially harmful when inspecting components after it is powered down?

    Also,

    If it the problem is actually the motor I am skilled at board repair etc. but is there a good site to find a motor replacement?

    Thanks in advance.
  • Lagonda
    Service Manager

    Site Contributor
    1,000+ Posts
    • Aug 2008
    • 1649

    #2
    The moment you open the front door the power supply to the laser diode is cut and its safe to work on, but if your an amateur its best to unplug the copier while your working on it.
    Sorry, the polly mirror is unrepairable, their machine built and sub components are unavailable, best to buy a new one.
    Last edited by Lagonda; 01-12-2009, 01:10 AM. Reason: spelling!
    At least 50% of IT is a solution looking for a problem.

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    • FRIDGEMAGNET
      Trusted Tech

      250+ Posts
      • Aug 2007
      • 377

      #3
      You will most likely need to replace the fan at the rear of the laser unit as this is normally what causes the motor to go.

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      • mikadonovan
        Senior Tech

        Site Contributor
        2,500+ Posts
        • May 2008
        • 2931

        #4
        You may want to try this. Remove the mirror motor from the LD unit. At the very edge of the pcb there is a small black plastic mirror keeper. This is the only thing holding the mirror to the board. Turn it to the left or right and pull the mirror off. Clean the inside of the bushing with alcohol and also the mirror shaft. Reinstall, secure the keeper and clean the mirror. This will sometimes get you back up and running for a while.
        NEVER ASSUME ANYTHING

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