My grandson had a jam in the tool head of his A1 and he damaged the filament sensor cable. I replaced the cable, the entire filament sensor and then the circuit board, thinking he shorted something out with the damaged cable. It still comes on with XX on the assistant display, the led on the case flashes on and off and the message is that the filament cutter handle is stuck or blade jammed, or there is an issue with the sensor. I have replaced the cutter handle and blade and I have another of these and the handle and blade looks and works as it should. I’m stumped. Any ideas? Thanks, Steve in Missouri.
Check if the cutter’s blade is inside the track as expected, if you arent careful it can flop down as you screw it back in
You should be able to press the extruder tension reliever, and stick a piece of filament all the way thru without stopping. If you hold down the tensioner, and also push the cutter in, you should now not be able to stick a piece of filament all the way thru. That can maybe be a hint if its not in correctly.