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  1. #1
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    Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    I have a Xerox WorkCentre 7755 that is giving error 342-325. According to service documentation this is a Main Motor Failure. The procedure is:

    1. Run Component control 042-002 Main Motor. => Main motor runs without issue
    2. Check waste toner collection path for bent pipes etc. => Path looks ok, changed the main pipe and the waste container just to be sure, without result
    3. Check black drum cartridge. => Replaced with new one, same problem
    4. Replace Main Motor. => Replaced, same problem
    5. Replace MCU PWB. => Replaced, same problem


    I checked connections (flat cables) between MCU PWB and LVPS, and they look alright. No corrosion of any sort. I'm not sure what to do next. Any suggestions would be very welcome!


  2. #2
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    Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    Front door interlock switch.


  3. #3
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    Thanks, will try that first thing monday.


  4. #4
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    Front door interlock switch changed for new one, same error...


  5. #5
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    I am really stuck on this and would enormously appreciate input. Anyone?


  6. #6
    Service Manager 1,000+ Posts
    Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    adriansto's Avatar
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    While you run the main mot in component control mode do a voltage measurement of 24 volts source in several points.


  7. #7
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    Swap ribbon cables around on mcu to see if you get same fault, could also be power supply or iot driver


  8. #8
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    Did you check black developer assy?


  9. #9
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    Thanks guys, I can/will check into this next monday. I haven't tried swapping power supplies and/or flat cables yet. As for the developer assy, I can try to swap that as well of course - but shouldn't that generatie a developer drive error?


  10. #10
    Service Manager 1,000+ Posts
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    Re: Xerox WorkCentre 7755 error 342-325 (342.325.00) Main Motor Failure

    Main motor drive also drive black developer assy and 2nd btr.
    So check black developer assy and 2nd btr.


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