I'm working with an Epson Stylus NX 400. My goal is to disassemble it and turn it into a standalone scanner since the printer part is broken. However, I'm facing a frustrating issue where the device thinks there's a paper jam, even though there are no paper or printer components to cause one. Does anyone know how to program these printers or flash my own software onto it to get it to work correctly?
3 Answers
It sounds like when you took it apart, you might have disconnected a sensor that detects paper. Now the printer is stuck thinking there's always paper there. You could try to find a schematic or trace back the sensor connections to the board. If all else fails, reassembling the unit might help!
Wait, what do you mean there's no printer? Isn't that a printer/scanner combo? Make sure there isn’t any jam in the printer section. When you say you’re tearing it down, did you disconnect anything from the printer part? Maybe a floating input pin is causing issues?
Well, the printer part was broken, so I figured it would be fine just to take the scanner out. But even after reconnecting everything from the scanner side, it still shows the same error and doesn't let me access the scanner. It's pretty annoying.
It sounds like you'll need to get into embedded systems programming and a bit of electronics to sort this out. Essentially, a sensor is sending a signal to the microprocessor that indicates a paper jam. You’ll need to figure out which sensor is involved and determine the right values for it. If you don't have a background in this, you might find it challenging to flash new software or program the printer to fix the jam issue.
I found a sensor that detects motor movement with a plastic disc. But it seems like the software doesn’t trigger the second motor, only the first one starts up before throwing the error.