Question about Epson LQ 680 Matrix Printer

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Epson Lq 680, paper out is on after cleaning printer still problem exists, i want to clean sensor?Where do i find paper sensor/detector cable?I got no service manual.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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MJS_1
  • 150 Answers

SOURCE: Epson LQ-590 Matrix Printer Paper feed Problem

Assuming that you are feeding the paper into the correct end of the printer :), it seems that the printer is defective, but

First unplug the printer from the wall, wait a few minutes,
and see if it resets. If that does not work, read on.

  1. Printer rollers (and sometimes head movements as well)
    are controlled by "Stepping Motors"

    Unlike an ordinary DC motor with two wires, that spins
    clockwise or counter clockwise depending on the voltage
    polarity,

    a stepping motor contains several pairs of wires, that
    are pulsed in a controlled sequence, causing the motor
    to spin in precise angular steps. Depending on the
    number of wire pairs (poles) and internal gears, the
    stepping motor can have a resolution as course as
    90 degrees, and as fine as 0.05 degrees per step,
    depending on the cost and applications.

    Linear stepping motors can even move an object in
    a straight line.

    The benefit of these stepping motors is that, unlike a
    linear servo motor, they do not need complex positional
    feed-back for precise control, they simply step as many
    times as you tell them to. Four steps left, two steps back
    .... etc.

  2. These stepping motors are in turn driven by semiconductor switches (transistors) which are
    ultimately controlled by a central processor within the printer.

    Depending on the printer model, and how sophisticated
    the printer's internal processor is, the paper and head
    movements can be either automatically controlled by
    SOFTWARE (firmware) within the printer itself, or by the device drivers installed in Windows.

    The more self-sufficient the printer is, of course, the less
    hassle and CPU overhead on your PC.

  3. When any of the components within this chain of command fail, the stepping motor will move incorrectly:

    a) Skip steps
    b) Get stuck
    c) Oscillate back and forth
    d) Spin backwards.

  4. The causes could be:

    a) One bad wire in the ribbon connecting the motor
    to its controller board.

    b) Bad motor driver transistor: Open or shorted.

    c) Bad data line from the printer's internal control
    processor to the driver transistor array.

    d) Bad processor chip, memory or firmware within
    the printer, e.g. a burned out register or firmware
    memory location.

    e) Defective internal power supply, causing everything
    else to malfunction.

    f) Bad paper position sensor

    d) Crashed control program, which is probably the
    only thing that is fixable:

    i) unplug the printer from the wall socket, wait a
    few minutes, and see if it resets.

  5. It is also remotely (theoretically) possible, that
    the Window drivers are corrupt but this is very unlikely.

  6. If you are fairly brave and want to take the printer apart, and have some electronics knowledge and a few basic instruments, probe the roller drive motor wires, and see what gives. Is one wire stuck consistently low or high ?

    Is one of the motor windings open or shorted ?

    Is one of the driver transistors fried ?

    This very much depends on your level of skill, and the test equipment you have to work with. If you don't have a decent oscilloscope you will not get far. Without a digital multimeter you will not get anywhere at all.
Also do not forget that printers are dirt cheap, less than the ink when it runs out, so this may not be worth your time and effort.

Call the manufacturer, scream blue murder, accuse them of setting your house on fire and giving your dog diarrhea ....

and see if they will send you a freebee.

Hope this explains it.
Please rate my answers.

Martin


Posted on Jul 18, 2008

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dana_eng
  • 41 Answers

SOURCE: my printer EPSON LQ-2180 send me an error code "paper out"

Hi Soulen , This link is very interest and useful for your type of printer : http://files.support.epson.com/pdf/lq2180/lq2180pg.pdf

and also for driver open this link : http://www.driverstock.com/Epson-LQ-2180-driver-download/23-26-3157-53410/index.html


Posted on Jan 22, 2009

  • 1 Answer

SOURCE: problem with epson LQ-680

my problem is how to install epson lq680 in windows xp,before i installed but font not correct,i have not get a english word
please give me solution about this problem

Posted on Apr 05, 2009

SOURCE: My Epson LQ-590/LQ-2090 keeps having paper jams

When a paper jam occurs during printing for some reason, the printer beeps, displaying the message <PAPER JAM> in the display. When a paper jam occurs, remove the jammed paper using the following procedure, and then resume the job. If the message that indicates the paper jam does not disappear even after removing the jammed paper following the procedure, there is a possibility that torn pieces of paper are still left inside the printer. Inspect each part of the printer again, and completely remove all pieces of jammed paper.

Posted on Jun 24, 2009

  • 5 Answers

SOURCE: EPSON LQ-680 DOT MATRIX PRINTER

problem with detector cable or detector sensor

Posted on Jul 01, 2009

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1 Answer

I have Epson LQ 2180. When Ever i load paper from rear tractor feeder it loads the paper and still shows the paper out LED. If i press Load/Eject button it only loads the paper not eject. I have cleaned...


Hi

My friend we have LQ2180 in our office, there i a lever in the right side of the printer that indicates when you print your document. Adjust to upward to print the document from rear tractor and to print from the front push the lever downward. Maybe you accidentally, push down the lever.

Any problem, just message me. Regards.

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turn off the printer remove the cable into computer. turn on the printer again. maybe the cable it cause of the problem

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Hi,
the paper you are using may be moisten. pls try another paper sheets . purchase new papers.
if the problem continue clean the paper feeder assembly roller with moist cotton using cleaning liquid eg petrol or spirit etc.

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may be problem with detector cable or paper sensor.

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my problem is how to install epson lq680 in windows xp,before i installed but font not correct,i have not get a english word
please give me solution about this problem

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problem with detector cable or detector sensor

Feb 24, 2009 | Epson LQ 680 Matrix Printer

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Update epson lq 680 ?


If you need a driver update, log on support.epson.com. Click on printers, then click on impact under printers. Click on the LQ-680. Click on windows under drivers and downloads and select the driver compatible with your operating system.
Goodluck.

sherlyn c.

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this may be problem with head cable or home position sensor.

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Try replacing the LPT cable, it's probably messing up the commands sent from the computer and thus, locking the printer.

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PAPERS PRBLEMS ASSOCIATED WITH LQ2180


check paper feed machanism and paper in sensor open your printer and clean the sencer

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