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  1. #1
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    Exclamation Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    I've got an HP CLJ 5550n 11x17 printer with multi-color "horizontal" lines.

    In the middle of a 150 page, suddenly develops several un-evenly spaced horizontal lines, The lines go completely off the edge of the pages right through the "grip" zone margins. These multi color lines have varying spacing and some even show up on the "backs" of prints.

    Upon opening machine, lines are apparent on transfer belt. Ordered and installed brand new Trans Belt Unit...no joy. Still has lines, Tried full calibrate, no help.

    I had the client create a B/W document only and send to printer.....still get various magenta, yellow, or cyan horiz lines.

    I have attached a couple of pics for reference. Anyone seen this issue first hand ???

    IMG_3099.JPGIMG_3097.jpg


  2. #2
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    Aftermarket ink?


  3. #3
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    Quote Originally Posted by OMG View Post
    Aftermarket ink?

    Tried swapping some toner ctgs already...no change.


  4. #4
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    Tried swapping some toner ctgs already...no change.
    Aftermarket toner?

    Run the PQ Diagnostics. If your defects show on any of the colors, you've got bad carts since you replaced the belt.


  5. #5
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    Quote Originally Posted by Lance15 View Post
    Aftermarket toner?

    Run the PQ Diagnostics. If your defects show on any of the colors, you've got bad carts since you replaced the belt.
    Thanks for the reply, but I have already swapped toner ctgs. Besides, I've never seen a bad ctg in one color, cause "horizontal" lines in all of the colors. For example, a bad cyan, should not cause yellow and magenta 'lines" all of a sudden.

    And these lines, as shown on the sample pics, remain on the Transfer Belt after print job completes, even on the brand new transfer belt unit.


  6. #6
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    Okay. You can swap cartridges all day long, but, you didn't answer the question if your using HP OEM toner cartridges or aftermarket toner cartridges.

    Sent from my SM-G955U using Tapatalk


  7. #7
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    Quote Originally Posted by Lance15 View Post
    Okay. You can swap cartridges all day long, but, you didn't answer the question if your using HP OEM toner cartridges or aftermarket toner cartridges.

    Sent from my SM-G955U using Tapatalk
    All OEM toner...and you didn't answer the question. Have you actually seen this issue first hand? You can blame toner ctgs "all day long" but have you ever even serviced a 5550n or any other 11x17 color box, with this exact issue?


  8. #8
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    In my 20 years of servicing printers, I've seen an awful lot of strange things. I STILL see things that make me scratch my head for a few moments. And yes, I have seen this exact issue time and time again.

    The Disable Cartridge Check can also be used to determine if the toner is to blame.

    To check if a cartridge is bad, you can enter Disable Cartridge Check. This allows you to switch the cartridges around. Then you can print test pages out of the menu and if the colors giving you issues stay the same, you know it's a bad cartridge.

    To enter Disable Cartridge Check mode do the following:
    Press MENU or (Select) to enter the MENUS .
    Press (Down arrow) to highlight DIAGNOSTICS .
    Press (Select) to select DIAGNOSTICS
    Press (Down arrow) to highlight DISABLE CARTRIDGE CHECK .
    Press (Select) to select DISABLE CARTRIDGE CHECK .
    Verify that the control panel reads READY DIAGNOSTICS MODE .


  9. #9
    Field Supervisor 500+ Posts Wild Bill's Avatar
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    High voltage unit possibly, Since all colors are doing it.

    Izzy

  10. #10
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    Re: Hp color laserjet 5550n, multi color horizontal lines on 11 x 17 ...

    Is it plugged in directly to the wall?

    Possibly try a different power outlet.


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