HP LaserJet Pro 400 Color M451dw

I've had my printers for almost 2 years and it's been working great.  For the past 2 months I've had an issue where there appears to be a watermark about 2 inches in from the right side.  It seems to show up on every other page and at times is at a different vertical location, but same horizontal.  Any thoughts?  This is my first laserjet printer, so I'm not well versed in maintenance.  Thanks!

First thing to try would be to invoke a cleaning page: the User Guide manual shows how to do this:
Print a cleaning page to remove dust and excess toner from the paper path if you are having any of the following problems:
● Specks of toner are on the printed pages.
● Toner is smearing on the printed pages.
● Repeated marks occur on the printed pages.
Use the following procedure to print a cleaning page.
1. At the control panel, press the OK button to open the menus.
2. Open the following menus:
● Service
● Cleaning Page
3. Load plain paper in Tray 1, and then press the OK button to start the cleaning process. Wait until the process is complete. Discard the page that prints.
NOTE: For models that do not have an automatic duplexer, the product prints the first side and then prompts you to remove the page from the output bin and reload it in Tray 1, keeping the same orientation.

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    Dear,
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    @ammarch 
    ‎Thank you for using HP Support Forum. I have brought your issue to the appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post ( serial numbers and case details).
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    @ammarch 
    ‎Thank you for using HP Support Forum. I have brought your issue to the appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post ( serial numbers and case details).
    If you are unfamiliar with the Forum's private messaging please click here to learn more.
    Thank you,
    Omar
    I Work for HP

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    R a i n b o w 7000I work on behalf of HP
    Click the “Kudos Thumbs Up" at the bottom of this post to say
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    Click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution!

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    When a solution is found please mark the post that solves your issue.
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    To get your issue more exposure I would suggest posting it in the commercial forums since this is a commercial product. You can do this at Commercial Forums.
    I hope this helps!
    R a i n b o w 7000I work on behalf of HP
    Click the “Kudos Thumbs Up" at the bottom of this post to say
    “Thanks” for helping!
    Click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution!

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    This question was solved.
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    The information is in the manual.  Did you download it and read it?
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    Say thanks by clicking the Kudos Thumbs Up to the right in the post.
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    The support page for your product may be helpful in the meantime:
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    RnRMusicMan
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos Thumbs Up" to say “Thanks” for helping!

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    Hello Ajton,
    To get your issue more exposure I would suggest posting it in the commercial forums since the HP LaserJet Pro 400 color MFP M475dw is a commercial product. You can do this at HP Enterprise Business Community.
    The support page for your product may be helpful in the meantime:
    HP Support Center.
    I hope this helps!
    RnRMusicMan
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos Thumbs Up" to say “Thanks” for helping!

  • HP LaserJet Pro 400 color MFP M475dn (CE863A), Localisation?

    Hi!
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    Hi adminik,
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    Also, remember a click on the Kudos star to the left is a quick "Thanks" for a helpful post.
    Please select the "Accept as Solution" button on the post that best answers your question.
    I appreciate your input !
    Thank You,
    I work for HP.

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    This question was solved.
    View Solution.

    Noise issues are difficult to troubleshoot remotely and they could easily misguide even when we are close to the device.
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    If not the toner cartridge then it would be one of the printer hardware component which is in question, hence an HP tech. might need to perform physical inspection of the device and the error condition.
    Please mark the post that solves your problem as Accepted Solution
    Click the 'Kudos Thumbs Up' if this was helpful. Thank You!
    (Although I am an HP employee, I am speaking for myself and not for HP)

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    Noise issues are difficult to troubleshoot remotely and they could easily misguide even when we are close to the device.
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    As you have mentioned that it happens only while calibrating, hence I would suggest you to re-check & validate your toner cartridges.  One of the toner cartrdige may be defective and causing this issue.
    If not the toner cartridge then it would be one of the printer hardware component which is in question, hence an HP tech. might need to perform physical inspection of the device and the error condition.
    Please mark the post that solves your problem as Accepted Solution
    Click the 'Kudos Thumbs Up' if this was helpful. Thank You!
    (Although I am an HP employee, I am speaking for myself and not for HP)

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