Question about Samsung CLP 300 Laser Printer

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Samsung CLP300 cover pops open while printing

After sending a job to print, the printer starts making loud grinding noises as though a gear is slipping. After a few seconds the right side of the front cover will pop open and printing will stop.

I am able to finish printing by forcing the front cover against the printer with my hand, though I feel the printer pushing the cover into my hand. As soon as I let go, the door pops open and printing stops.

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  • Paul Edmunds Feb 24, 2009

    Solved for now?

    The cartridge was not fitting in properly.

    Sure enough, this had only started happening after a new black toner cartridge was installed. This was not a refurbished cartridge.

    We found there is no "click" as the cartridge is pushed into the imaging unit and the plastic gear on the back of the black toner cartridge was not moving freely. We rotated the gear on the back of the toner and re-inserted the cartridge into the imaging unit.

    We printed a few jobs with the cover off (manually pressing the switch that the cover activates when closed) and the printer ran well with only a little noise.

    My guess is that the new cartridge isn't fitting in 100%, or the gear on the back of the cartridge is not fitting perfectly into the gear behind it on the printer, which caused the cartridge to pop out, pressing against the front cover.

  • Melrin Mar 07, 2009

    Hi Paul and others,

    here is my opinion:

    Quick solution: Change developer unit

    Detailed description:

    your grinding noises starts after cartridge is pushed out about 2mm,
    gear on the cartridge is off support (axial plug inside printer) and force between gears axis draws apart axes of gears.

    If you will keep cartridge in original possition, pressure in the cartridge will increasing and agitator inside bottle destroyed.

    That increased force appears when toner is not freely moving from bottle to developer unit (when toner cartridge is not near empty) during Toner Supply Mode.

    Simply... developer is overfilled, but printer is still loading toner by
    moving cartridge.

    You can make these tests:

    1/ You can see in circle hole in developer toner around vertical supply hole, and toner level is visible. On colour developers I have no visible toner level.
    2/ You can rotate gear on cartridge to left (anti-clockwise) when it is out
    of printer of course, and the fill hole down. After a while the gear will stop moving by increased pressure.

    This only my opinion, but all cartridges I have tested had this freeze on toner pressure. Empty cartridge moves freely, but empty chip is cause not usable for more.
    Maybe this sitation can rise when you print all pages (about 2000 on this toner) with very small toner coverage of page, so chip is counted off and toner has full level in developer.
    So, I think, printer has an error in firmware or in checking toner level in developer, therefore I upgraded to new firmware v1.00.12.35 and now testing if toner supply mode is resolved. (I hope, this is associated with Release note of FW : Toner save mode by optimized toner supplying :o)

    Sorry, if my solution is not solution for you, but for me is working few days...

    I am waiting for your comments...

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  • 6 Answers

If you used a non samsung toner cartridge replace it with another of a different brand or a samsung one. when it pushes the cover open look to see which toner cartridge is pushed out and replace that one

Posted on Jan 10, 2010

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