How to Fix Brother Sewing Machine Error Code F7

Q:  What does F7 error message mean?
Ans: Speed VR disconnected
Q:  How to fix F7 error message?
Ans: Unplug the sewing machine and reconnect any loose wires on the SSVR PCB assembly and the main PCB assembly. If the wiring connections are okay, replace the SSVR PCB assembly. If the problem persists, replace the main PCB assembly.
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