Klipper screw_tilt_calibrate and z_tilt were failing with an "out of tolerance" failure message when probing with a CRTouch. It appeared the CRTouch had failed. After installing a new CRTouch, the problem reappeared after a couple of tilt attempts.
The hardware involved is a Bigtreetech Manta M5P/CB1 combo.
The next thought was a corrupted micro SD card / operating system file. The operating system was reinstalled on a new micro SD card. The initial homing task completed successfully then the tilt functions failed again-several attempts.
After several hours of checking cable continuities and retrying to home all axis unsuccessfully with the z axis homing becoming the obvious failing step the process progressed to testing Manta M5P sockets and changing printer.cfg settings to test stepper motors. The dual z steppers were driven by tmc2209 drivers. The result was the tmc2209 driver for stepper-z1 (socket labeled M4 on the Manta) was driving the stepper in only 1 direction. The driver had partially failed.
Klipper screw_tilt_calibrate and z_tilt were failing with an "out of tolerance" failure message when probing with a CRTouch. It appeared the CRTouch had failed. After installing a new CRTouch, the problem reappeared after a couple of tilt attempts.
The hardware involved is a Bigtreetech Manta M5P/CB1 combo.
The next thought was a corrupted micro SD card / operating system file. The operating system was reinstalled on a new micro SD card. The initial homing task completed successfully then the tilt functions failed again-several attempts.
After several hours of checking cable continuities and retrying to home all axis unsuccessfully with the z axis homing becoming the obvious failing step the process progressed to testing Manta M5P sockets and changing printer.cfg settings to test stepper motors. The dual z steppers were driven by tmc2209 drivers. The result was the tmc2209 driver for stepper-z1 (socket labeled M4 on the Manta) was driving the stepper in only 1 direction. The driver had partially failed.
Replacement tmc2209 ordered.