Epson 1290 clean paper feed and paper sensor

SOURCE: Epson 1290 paper feed problem

wow..springs that are weakened...unfortunately, that's one key weakness in these sort of printers. When I do a repair, if the springs are shot(not unlike a car, eh?), it's time to replace em. Not much can be done to restore the tensile strength of something like that.

Got Backup?

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.

SOURCE: my epson cs7800

I had the same problem and found a small spring was loose and interfering with the paper. The Spring was on the right side as you look at the printer, near the bottom of the paper feeder. I took it out and it works fine, for now.

SOURCE: Epson 1290 Head Cleaning

Just download the software from Epson's site. I don't think there's anyway to run the utility from the buttons, I'm afraid.

Anjazmoro Wicaksono

• 511 Answers
• Posted on May 30, 2009

SOURCE: epson c90 paper feed problem

Is the message general error? The problem is tchip. When turn on chip is recognized by printer, but when start to print, printer "read" some information from the chip. Here is the error. Some pin at the chip for redaing the existence of chip, other pin for reading the information. Check connector between chip and carriage.