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HP DeskJet 660C

Discussion in 'Electronic Repair' started by N Cook, Apr 2, 2005.

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  1. N Cook

    N Cook Guest

    Found one dumped and as i don't use one and never used one thought
    i'd have a go repairing or at least learning something about
    these things.
    As stand alone not connected to pc it powers
    up , lights come up and seems to go through a self
    check routine. Pushing power-off and it parks
    up and powers down. Flashing Yellow LED presumably
    indicates paper out whether a sheet in and grabbed by
    the drop down black plastic bar mechanism or at
    entry only. I cannot find what senses paper-in.
    If while switched off and i manually feed a sheet in then
    it will eject that sheet after selftest on power up but
    not register any sheets under it.
    There has obviously been a flood of green? dye
    at some point, not over any circuitry or lines.
    Green?, as dye heads are present , one is black and the other

    Diverse Devices, Southampton, England
    electronic hints and repair briefs , schematics/manuals list on
  2. NSM

    NSM Guest

    You are probably getting ink errors of some sort.
  3. spudnuty

    spudnuty Guest

    Not sure about the 660C but just worked an 825C that it seemed like the
    cartridges were bad based on the self diagnostic and test page (see the
    HP site on how to run these). So I tried to replace the ink cartridge
    with a generic that works in my 827Cse and listed as working for the
    800 series but got that flashing yellow light.
    I Freecycled this and the guy I gave it to said it worked fine after he
    put in new OEM cartridges.
  4. N Cook

    N Cook Guest

    The green ink has come from a small tank with a sponge immediately
    next the parking area. Presumably a test squirt point for all inks.

    The black cartridge has ink in it by shaking.
    The color/colour one seems empty by shaking.

    I assume just the paper-in sensor at the top and
    if fails to complete self-test, yellow flashing LED
    then it will not grab a sheet. So no paper out sensor as such.
  5. spudnuty

    spudnuty Guest

    This HP support site seems to support the theory that it's a ink
    cartridge recognition:
    and you're right that sponge catches the ink when it does a cleaning
    cycle. Can you get your computer to recognize the printer? If so what
    does the utility say is the status of the ink cartridges? I've hear
    there are chips that can be hacked. There are sites that talk about
    this for making a printer continuous feed.
  6. N Cook

    N Cook Guest

    I cleaned the active micro-perforated bits of black and colour cartridges
    and replaced them, powered up and yellow LED stopped flashing
    so i held down the 'resume' button for 5 seconds and the
    machine printed out a black test page.

    I'll have to now connect to a pc and also find out about refilling
    the cartridges
  7. Charlie+

    Charlie+ Guest

    as underneath my scribble :

    You might find the following site useful if you are doing any
    dismantling/tests of your HP660C!
    NB IF the cartridges have been airlocked or run dry just refilling
    will not do the trick-inkjet elements burn out if not wet and this may
    be the case with your carts - u might have to buy some new ones!!
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