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  1. #1
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    Xerox 550 error 077-909.

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    Xerox 550 error 077-909.

    The copier , makes both simplex and Duplex copies in black and white mode , but gives error while copying or printing in color mode .

    If anyone have faced this issue and has any suggestion would be great.

  2. #2
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    Re: Xerox 550 error 077-909.

    What have you done to get this problem?
    NVM reset?
    Remove battery from NVM PWB?9

  3. #3
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    Xerox 550 error 077-909.

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    Re: Xerox 550 error 077-909.

    Quote Originally Posted by xcopytech View Post
    What have you done to get this problem?
    NVM reset?
    Remove battery from NVM PWB?9
    Primarily there were multiple codes on machine , 124-338, 124-311, 116-320, 045-316, 10-320, 062-380/326, 077-909.

    I have cleared all errors and now stuck on 077-909,
    I have tried NVM reset, changed both the batteries (ESS and MCu),
    Replaced registration sensor , iot exit sensor, replaced fuser assembly, cleaned the drawer connectors .
    Still it gives code 077-909,i checked NVM chain link 742-003, shows 77108 or 77105(sometimes).

  4. #4
    Service Manager 1,000+ Posts
    Xerox 550 error 077-909.

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    Re: Xerox 550 error 077-909.

    Quote Originally Posted by IGEN93 View Post
    The copier , makes both simplex and Duplex copies in black and white mode , but gives error while copying or printing in color mode .

    If anyone have faced this issue and has any suggestion would be great.
    If the registration assembly was replaced, the OHP (transparency) sensor has been removed from the registration assemblies.
    If the registration assembly has not been replaced, the OHP (transparency) sensor may have failed or an IOT nvm initialization has been performed.

  5. #5
    Technician fugglefeet's Avatar
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    Re: Xerox 550 error 077-909.

    Quote Originally Posted by IGEN93 View Post
    Primarily there were multiple codes on machine , 124-338, 124-311, 116-320, 045-316, 10-320, 062-380/326, 077-909.

    I have cleared all errors and now stuck on 077-909,
    I have tried NVM reset, changed both the batteries (ESS and MCu),
    Replaced registration sensor , iot exit sensor, replaced fuser assembly, cleaned the drawer connectors .
    Still it gives code 077-909,i checked NVM chain link 742-003, shows 77108 or 77105(sometimes).
    Hi IGEN93,

    Have a look at 2 possible locations for media stuck in the machine or defective sensors/connectors. Two Eureka Tips point to a jam in the MSI pre-registration sensor and a fuser exit sensor out of position.

    Hope this helps.

    fugglefeet

  6. #6
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    Xerox 550 error 077-909.

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    Re: Xerox 550 error 077-909.

    Quote Originally Posted by fugglefeet View Post
    Hi IGEN93,

    Have a look at 2 possible locations for media stuck in the machine or defective sensors/connectors. Two Eureka Tips point to a jam in the MSI pre-registration sensor and a fuser exit sensor out of position.

    Hope this helps.

    fugglefeet
    i have already replaced fuser exit sensor, iot exit sensor, pre registration sensor.

  7. #7
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    Re: Xerox 550 error 077-909.

    Turn off OHP sensor in diagnostic.

  8. #8
    Technician fugglefeet's Avatar
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    Re: Xerox 550 error 077-909.

    Quote Originally Posted by xcopytech View Post
    Turn off OHP sensor in diagnostic.
    Hi all,

    It looks like xcopytech is right. Thanks for nudging me in the right direction.

    The attached PDF confirms what is being experienced.

    fugglefeet
    Attached Files Attached Files

  9. #9
    Technician
    Xerox 550 error 077-909.

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    Re: Xerox 550 error 077-909.

    Quote Originally Posted by fugglefeet View Post
    Hi all,

    It looks like xcopytech is right. Thanks for nudging me in the right direction.

    The attached PDF confirms what is being experienced.

    fugglefeet
    Thanks for the solution, it worked , I found the missing nvm list from the machine and that nvm was listed in the list .

    Thanks for the solution .

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