PRUSA ORIGINAL PRUSA I3 MK3S Filament Sensor False Trigger
| CONF | DIAGNOSIS | 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.
|
VIEW ON AMAZON
#CommissionsEarned
|
|
8%
CONF
|
Secondary Circuit / Wiring Check
Inspect wiring harness.
|
VIEW ON AMAZON
#CommissionsEarned
|
DIY Repair Guide
Watch exactly how to replace the IR Filament Sensor (MK3S/MK3S+/MK2.5S).
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.