where is the mainboard extrusion motor interface?

New line and new motor. Still not working. Checked everything else you said in reference to switches and all are working

The motor on my filament feeder is not working. I installed a new one and it still is not working. Any suggestions?

Having trouble contacting Creality and Micro Center where I purchased my CR 10 S. Have email with no results. I live two hours away from Micro Center and they do not answer the phone saying that I need to email them which I have. Any suggestions how to contact reality I have sentEmails with no results