Question about Office Equipment & Supplies
Hi saw your problem and solution and it sounds identical to mine, do you have an image or manual that describes how to access the roller so I can fix it, at the minute i've taken out all kinda screws but can't access rear panel still. Thanks
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.
are controlled by "Stepping Motors"
Unlike an ordinary DC motor with two wires, that spins
clockwise or counter clockwise depending on the voltage
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
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.
a) Skip steps
b) Get stuck
c) Oscillate back and forth
d) Spin backwards.
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
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.
the Window drivers are corrupt but this is very unlikely.
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.
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.
Posted on Jul 18, 2008
Hi - googled and found a good Epson site with info on this - reproduced below - the part that worked for me was allowing a small bit of room between the paper on both sides and the paper guides (counterintuitive...) rather than flush up against them.
From the Epson instructions:
You can try using the Epson cleaning sheet (has a sticky side) to pick up any excess paper residue. It's available from the Epson Store.
Try loading heavier stock paper, such as 24 lb. paper, if you haven't done so already.
Make sure there is 1/16 to 1/32 inch space on each side of the paper in the paper tray.
Move the paper type selector back and forth 5 times, to make sure it is not stuck.
Feed the tray with a minimum of 20 sheets of paper and try to see if it loads paper through.
The paper thickness lever has two settings, one for plain paper, (thin paper 20# to 24#) and one for envelopes and thick paper.
It should be on the 0 setting for thin paper and on the + setting for thick paper and envelopes.
The paper adjustment lever may be adjusted in between the two settings to accommodate paper that is not standard or that the operating/environmental conditions have changed.
Make sure the paper is loaded far enough into the printer to ensure good contact between the paper and the paper feed mechanism.
Posted on Sep 07, 2008
SOURCE: paper feed problem.
I have just removed the panel where the power and USB cable lock into. It's a case of 1 screww from the rear and 2 catchs underneath the printer. From there you should be able to see the mechanism for the roller, a set of small white cogs. below that you should be able to see a very small spring which is acting as the pressure. Mine was still attached but as you say was pulling no pressure on the roller what so ever.
Find yourself a large-ish rubber band and slip the band over the whole mechansim. Best way is through the paper feed slot, slip it over the roller and then move it through to the area where you removed the panel. Position the rubber band as far down the cogs as possible, don't worry the cog casing prevents the band interfearing with the cogs. Now pull the band reasonably tight and with the other hand test the pressure of the roller. Adjust till you feel OK with it. Now put the panel back in with the end of the rubber band trapped and poking out from the panel behind the printer, holding it in place. Redo the screw and give it a try.
My first attempt found it a bit too restrictive and feeded to sheets at a time but adjusted it once and its back to normal. I know its a bodge but its a cheap one and it uses a rubber band, just how I fixed my Punto's windscreen wiper, £120 part or a rubber band once a month... Mmmm...
Posted on Feb 21, 2009
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