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hp officejet 4110 all-in-one

Discussion in 'Misc Electronics' started by Allan Adler, Oct 6, 2006.

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  1. Allan Adler

    Allan Adler Guest

    I just found a hp officejet 4110 all-in-one printer-fax-scanner-copier
    on the street in a pile of trash. It didn't have a printer cable; all
    I have is the device itself. I picked it up in the hope that it might
    have a stepper motor or other motor I might be able to use. Even if it
    does, I'm not sure how to use it. Apart from that, I'd like to know about
    anything else in it that might be salvageable. For example, it has an
    LCD display.

    I guess the more one knows about how the device works and how it is put
    together, the more likely it is that one can contemplate leaving most
    of it intact, even if it is arranged differently physically, and simply
    giving it different instructions. I doubt that there is that much
    information available about this machine.

    Anyway, advice on how to get the most out of this discovery, without simply
    using it as hp intended (which is not an option), will be welcome.
  2. webpa

    webpa Guest

    A good place to start is to download the manufacturer's user manuals.
    Study them for possibilities. For example: If this is an all-in-one,
    that means it includes a scanner as well as a printer...which means it
    has optics (mirrors, lenses, an image sensor, etc.), as well
    printer-related stuff. If it also functions as a fax machine...then it
    includes a telephone interface. USW
  3. jasen

    jasen Guest

    it should have some of them.
    There's plenty about that on the interweb
    most of it potentially,
    (I note you're using gnus) I think there's a linux driver for the small
    character-based LCD displays (displays based around some hitachi chip I think).

    I had one but destroyed it before i got it working correctly (not sure what
    I did wrong)
    that very much depends on your goals.
  4. USB cable? Dollar store?

    I'd see if it works before trashing it for parts. It may just need new ink -
  5. Allan Adler

    Allan Adler Guest

    Thanks for the suggestion. I'm downloading the HP Officejet 4100 series
    all-in-one (English) Reference Guide and setup poster now.
    Abbreviation for "und so weiter"?
  6. Allan Adler

    Allan Adler Guest

    I'll see what I can find out. Yes, I'm using gnus but not on the PC I would
    be using for any interfacing. The PC in question has both RH 7.1 Linux and
    Freedos installed. I would probably start with Freedos interfacing, since
    I think it is easier to get things to work, but I don't really know. Once
    something works under Freedos, I'd imagine I actually know something and
    try to get it to work under Linux.
    At this stage, my goal is to be better educated and I view the hp 4110
    as a means to that end. Then I'll be better prepared the next time fate
    favors me with garbage. I don't have a particular construction project
    in mind at the moment, although I have seen things on the web (www.hackaday...)
    such as using stepper motors from printers to make a numerically controlled
    milling machine. I'm not ready for that. Just to know how to fillet and bone
    the fish will be a sufficient goal, and if I can do better, that's even
  7. Allan Adler

    Allan Adler Guest

    It has 3 sockets that look like they take:
    (1) phone jack
    (2) power cord
    (3) I don't know. The symbol next to it looks something like the symbol
    for a USB connector but there are 4 prongs in in the almost square hole,
    not at all like the USB receptor for my flash drive.
    I'm running RH 7.1 Linux and it has no driver for this printer. The hp
    website doesn't have a Linux driver for it. So, there is no chance of
    my using it as a printer in the near future, even if I did feel up to
    trying to buy ink for it.
  8. It may be very similar to another model.
  9. But he's saying he thinkgs there's a driver for small LCD displays for Linux.
    Which means that if you were lucky, the printer's display is the same and
    you now have the means of using it, or at least you have a driver that
    you can study to see how you can drive such a display. If a driver exists,
    it's a lot easier than whatever you may think of the operating system.

    Based on people's questions about making use of scrapped electronics,
    a common mistake is to strip it down without taking notice. So
    they end up with components that have no information, or they save
    some key parts but neglect to save the associated parts that may
    also be difficult to get.

    Often, one can extract information from the complete unit, and once you've
    taken it down to individual parts that information is lost.

    So you find a radio, and you can start making guesses about the ICs even
    if you can't find part numbers, because you have the whole thing in front of
    you and have a general idea what sorts of ICs are needed. Unsolder those
    ICs from the board, and they are just ICs with no recognizeable part number.
    On the board, you can trace the circuitry to get an idea of what the pins
    do, or to verify whether a guess at what the IC might be (under a house
    number) matches a common IC. Even things like what pins are grounded and
    what pins get power can pretty much immediately sort out IC guesses; if
    there's no match to the guessed IC, then you need to guess again. Each
    iteration brings new information.

    You look for the same sort of function in a databook, and then see if
    they match the unknown IC. A differing number of pins immediately rules
    out the guess, the wrong ground pin eliminates others. But then you
    trace the circuit board following the guessed IC's external connections,
    and you may find a match. Often that can be easier, imposing a known
    circuit, on a circuit board circuit, than tracing out everythying
    first and then trying to make sense of it.

    Or, a common item in radios are ceramic filters, which can be useful
    if building radios. But once those filters are desoldered, you've lost
    what the terminating resistors are, and which pin goes to ground, and
    how the inputs are connected to the driving source, and what's connected
    to the output pin.

    Or sometimes you have small boards that could be used as is, so long as you
    know how to connect them. So the IR receiver in a VCR is actually on
    a small board, or you can hack out the area with a hacksaw. Take note
    of what is ground, and what is the power supply line, and then that
    third line must be the data output. You don't even have to know
    what's inside the module, because you can treat it as a black box.
    Desolder the parts, and you have an IC that you have to find data
    for, and then you have to find out how to wire it together, and get
    the parts, which is what you started with originally.

    Find things with exotic parts, that you know are valuable or you
    are especially interested in, and if you aren't going to use them
    right away, it makes sense to keep the boards or equpment intact to some
    extent. Because when the time comes when you need that exotic part, you
    will be glad to have the information you can extract from tracing the
    circuit, and in some cases glad to have the connected parts.

    At the very least, marking parts that can't immediately be identified
    with whatever information you can gather form the board (and even
    where you got it, since you might want to look for similar equipment,
    or you might get lucky later and find a schematic that explains the parts.

    A few years ago, I needed a 24V power supply to run something, and for
    some reason I remembered that I'd seen indications of higher voltages
    in printers. So I grabbed one of the injket printers that I'd brought
    home, and it offered up a switching supply of the needed voltage. I
    wish I'd recorded the brand and model, because it would be handy to
    find some more of the same type, rather than randomly bringing them
    home or taking them apart on the sidewalk until I found a match.

    For that matter, I know I've taken other inkjet printers apart
    where the power supply was a separate board, kept them intact because
    I am far more likely to make use of a power supply than to build
    one up from parts lying around.

  10. Allan Adler

    Allan Adler Guest

    I downloaded it. It is your typical user manual with no information about
    internals. Just how to turn it on and use it. On the other hand, the web
    site also offers to sell parts to hp 4100 series printers, so maybe their
    parts "catalogue" will have some useful information.

    Allan Adler <>
    * Disclaimer: I am a guest and *not* a member of the MIT CSAIL. My actions and
    * comments do not reflect in any way on MIT. Also, I am nowhere near Boston.
  11. Allan Adler

    Allan Adler Guest

    Thanks, this is very sensible and helpful.
  12. Allan Adler

    Allan Adler Guest

    I'm running printtool now to see what models might be close to it.
    It lists the following OfficeJet models:
    500, 600, 625, 635, 720, G55, G85, G95, Pro 1150C, Pro 1170C, Pro 1175C,
    R45, R60, T45, T65.

    They don't sound very close to 4110. However, if a friend with a
    PC running Windows shows up, I might be able to try it out on his
    machine. It just might not be in the near future.

    Anyway, I'll keep in mind the possibility of actually using it and
    thereby adhere to Michael Black's advice not to destroy anything that
    I might want to use or know more about.
  13. webpa

    webpa Guest

    Exactly: "and so on" or "and so forth" in German. Where I went to
    school, the favorite blackboard shortcut of all my math and engineering
    science professors when they didn't want to complete a long, boooooring
  14. Mine preferred, "And it is obvious to the meanest intelligence that ..."
  15. Allan Adler

    Allan Adler Guest

    I just went for a walk and found a discarded computer system. The computer
    case had been broken open and little was left unscavenged. In addition to
    the computer and monitor, there was a HP LaserJet 4, and I decided to give
    the printer a home. It has no cables and I have no idea at the moment whether
    it works. Unlike the hp 4110 all-in-one, the HP LaserJet 4 *is* known to
    printtool on my RH 7.1 Linux PC. So, trying to get it to work is a possibility,
    if I can get the cables and maybe replacement cartridges or whatever, which
    might add up to a significant amount of capital that I'd rather spend on
    other things, especially since I don't know if the thing works in the first
    place. Better to stick to looking for stepper motors and other useful
  16. Steven

    Steven Guest

    Gakk! it's a printer cable! Go to the computer store, buy one. Pay them
    a fee they might tell you if it works, DL the driver, BAM. Laserjet 4
    is maybe one of the least brain-consuming things to maintain compared
    to USB DeskJet setup which they seem to change every two weeks with
    every new model.

    Have fun!
  17. Allan Adler

    Allan Adler Guest

    I think I'm having fun. I'm not sure. I scavenged a power cord from an
    old computer and used it to power up the printer and pushed some buttons
    on the console to get it to run through a print test. There was a paper
    jam and there have been about a dozen paper jams without any successful
    printings. I'm not sure why. I was doing this with the printer sitting
    on top of some old books. I moved it to the floor a little while ago
    and tried again and now, for some reason, it makes a truly ghastly sound
    every time I turn it on and run the print test.

    When the paper jams, I remove the cartridge in order to remove the jammed
    page. The print on the paper wipes off easily.

    I have the service manual. I expect to learn a lot about this printer.
    I don't really expect to ever get it to work properly, but I will have fun.

    One cause for optimism is that the entire computer system was thrown away,
    not just the printer. So, probably it really does work. The thing is, I
    never owned a laser printer before and I don't know ANYTHING about them.
  18. Steven

    Steven Guest

    1. Clean the rollers. They are dirty, same as any printer, and the
    paper may not be the right quality for the printer. See the website or
    office supplies store for details.

    2. Either your toner is bad or something else in the printer is awry. I
    would call somebody who deals with them on a regular basis (office
    supply store, copier repairman) or go to and enter the
    product name and look for Troubleshooting somewhere in the menu. HP
    usually provides tutorials or maintaining their printers. HP LaserJets
    are supposed to provide a fairly dry copy, not smear badly as in a
    DeskJet using too much ink for instance. Toner is different than ink, I
    think it's electrostatically charged and bonded to the paper, but I
    really don't know a lot about them.

    This is pretty general knowledge from someone who's first printer was a
    used 500C, but I'm sure they aren't rocket science (only the USB
  19. I gather there are two steps, at least, to the printing process. The first
    applies the ink, the second fuses it to paper.

    If that's correct, it still may be a paper jam issue. Because if the jamming
    comes before the fusing, of course the ink is not properly attached to
    the paper.

    I got a nice small laser printer for ten dollars at a school rummage sale,
    and when I tried it, it jammed. It turned out to be something as simple
    as scotch tape stuck inside the paper path. Once that was cleared out,
    it worked fine. But it was really slow, so I didn't stick with it. Too
    bad because it was a real postscript printer, and nice and small.

  20. Allan Adler

    Allan Adler Guest

    I think you're right.
    I'll have to read the service manual until I get a sense of how the thing
    is put together and what can be accessed. That will take a while. Presently,
    my theory is this:
    (1) The ghastly sound and the paper jam have a common origin.
    (2) The ghastly sound is due to some gear that is not engaging properly.
    (3) That gear probably turns some chain that is responsible for making the
    paper go through the fuser.

    If that is correct, the questions become:
    (4) Can I really access the relevant part of the printer?
    (5) Can I get a replacement part, if that is what is required?

    I expect the answer to (5) to be "yes, from hp's website", which would
    also suggest that the answer to (4) is also "yes, if you have the right

    Anyway, the first thing to do is read the service manual, all 450 pages
    of it. I prefer to read hardcopy, but at the moment that presents a
    chicken-and-egg problem.
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