How to Fix Brother Sewing Machine Error Code F3

Q:  What does F3 error message mean?
Ans: Key pressed continuously with power on
Q:  How to fix F3 error message?
Ans: The F3 code appears when a stitch selection key, stitch length adjustment key or stitch width adjustment key is stuck. Attempt to release the stuck button. Replace the key panel if you can't release the stuck key. If no keys are stuck, replace the operation PCB assembly. If the problem persists, replace the main PCB assembly.
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