PRUSA ORIGINAL PRUSA I3 MK3S Filament Sensor False Trigger
| CONF | DIAGNOSIS | PART MATCH | ACTION |
|---|---|---|---|
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92%
CONF
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IR Filament Sensor (MK3S/MK3S+/MK2.5S)
The IR sensor is a photo-interrupter that detects the position of a mechanical lever; false triggers occur when the lever fails to fully exit or enter the optical window of the sensor. This is often caused by tolerance stacking between the printed parts and the sensor PCB, or thermal degradation of the sensor's phototransistor. Replacing the sensor provides a fresh optical interface and ensures the component meets the precise logic thresholds required to distinguish between the 'filament present' and 'filament absent' mechanical states.
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CHECK PRICE |
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8%
CONF
|
Secondary Circuit / Wiring Check
Inspect wiring harness.
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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the IR Filament Sensor (MK3S/MK3S+/MK2.5S).