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HP Laserjet III P problem

Discussion in 'Electronic Repair' started by Stefan Toftevall, Apr 3, 2005.

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  1. Hi everyone,
    My good old laserprinter suddenly refuse to print with the display
    showing: "50-Needs service". Anyone know what is wrong?
    I heard somebody say it has got an internal counter, and after a
    certain amount of printouts, it display this message though it must
    not be anything wrong. The counter needs reseting in some way.
    Anyhow, any advice is appreciated,
    Regards, Stefan
  2. Lee Babcock

    Lee Babcock Guest

    This code indicates a problem with the fuser. This model series is
    famous for an underrated capacitor in the fuser circuit causing this
    code. I'm not a tech, but I'm sure someone here will be able to help
    you further on this.

    BTW, a simple check on google gives:

    Lee in Toronto
  3. Sarah

    Sarah Guest

    Sounds like a motor assembly, pretty common, its deep inside the
    machine = $$$.

    get another printer at if you want a cheap one.
  4. James Sweet

    James Sweet Guest

    50 is a fuser error, there can be several causes but 99% of the time it's a
    small usually green electrolytic capacitor on the board that controls the
    fuser lamp (it's near the power supply). If you get that board out and look,
    you may even find that the cap is leaking or bulging. Replace it, reassemble
    and you should be good to go. Those are very good printers.
  5. Cubzilla

    Cubzilla Guest

    Yep as others have said

    the fuser or the PSU cap = service 50

    You can check the fuser bulb with a meter should read 20-30 ohms

    Ref the counter and all that crap... thats on the larger range of Laserjets
    ie laserjet 5si.. laserjet 8000 etc

    Regards Cub
  6. Andy Cuffe

    Andy Cuffe Guest

    That error means the fuser isn't getting up to temperature. It could
    be a blown fuser heater lamp, thermal fuse, or the control circuit.
    Andy Cuffe

    <-- Use this address until 12/31/2005

    <-- Use this address after 12/31/2005
  7. Guest

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