The Original Prusa MINI/+ displays the message: "Failed to home the extruder in X-axis, make sure there is no obstacle on X-axis".
Error name: Homing error X
Error code: #12304
The error is most likely caused by a bad movement of the print head along the X-axis.
Make sure there are no obstructions in the path of the X-axis. For example, there might be a piece of filament stuck around the belt, or on a smooth rod, from a previous print.
Check the X-axis belt tension and adjust it, following our dedicated article on belt adjustment.
Check whether the X-end is fully inserted onto the smooth rods. Look sideways on the X-end into the inspection hole and ensure that the smooth rod is inserted all the way into the plastic part. Repeat this check for the other X-axis smooth rod.
Ensure that the two screws that secure the X-end are not loose. If they are not flush or below flush with the X-end, they obstruct the full X-axis range of motion, possibly causing the error.
The X-axis motor pulley is attached to the X-axis motor shaft. The motor shaft has one flat side. The pulley has two set screws, ensure that one of the two set screws is aligned with the flat part of the motor shaft. Make sure the other set screw is also tightened, not excessively, and that there is a small space between the pulley and the motor.
To access the X-axis motor pulley, follow these steps:
If you have a question about something that isn't covered here, check out our additional resources.
And if that doesn't do the trick, you can send an inquiry to [email protected] or through the button below.