3

I have been using my Anet A2 for about a year. A few problems but none that I haven't been able to resolve. Today it suddenly stopped auto homing.

Using the position commands I can advance the X and Y positively but not negatively (after I manually re-position the carriages before turning the printer on). Also the Y stepper motor makes an unusual noise and it will over advance the Y axis. This behavior was preceded by a feed fault. The print started fine but the stepper motor stopped feeding shortly after the print started.

I am printing from an SD card as I always have. I changed SD cards thinking it might be a connection problem and I checked the G-code and all the commands including the E commands seem to be there. I have checked all the electrical connections - they seem to be fine.

Any suggestions to solve this?

Greenonline
  • 6,748
  • 8
  • 40
  • 68
Peter
  • 41
  • 2

2 Answers2

2

I have experienced this a few times, usually this is related to the end stops.

If your end stops are somehow triggered (e.g. short circuit or cable broken; depending on the setup), the steppers will not home (as they think they are at the limits already) and only advance forward. Please look into the end stops of X and Y. Use a multi-meter to measure them and trigger them manually.

Alternatively hook up your printer to your computer with a USB cable and download a printer utility/application that can interact with the printer (e.g. Pronterface, Repetier-host, OctoPrint, etc.) and go to the terminal interface and send the M119 instruction to see the status of the end stops.

0scar
  • 37,708
  • 12
  • 68
  • 156
2

Please check connections to the Y stepper first. You could replace cable from 'X' axis to test the connection.

The noise from stepper mostly means a disconnected pin (broken connection), an obstacle on the path (check and clean if any) and a worse-case-scenario a broken stepper driver, so you could swap steppers (just by connecting the cable) to see where is the reason. If 'Y' stepper works fine when connected to another axis slot (excluding extruder ones) then driver need a replacement.

profesor79
  • 2,002
  • 1
  • 11
  • 24