Brother electronic sewing machine

Unplug the sewing machine and check the wiring connections on the power supply PCB and the main PCB assembly. Reconnect any loose wires. If the problem persists, replace the power supply PCB. If the F1 code returns after replacing the power supply PCB, replace the main PCB assembly.

The F2 code appears when the reverse/reinforcement stitch button, needle position button or start/stop button is stuck. Attempt to release the stuck button. If you cannot release the stuck button, replace it. If no buttons are stuck, replace the SSVR PCB assembly. If the problem persists, replace the main PCB assembly.

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.

Plug in the foot controller jack if it's disconnected. If the foot controller jack appears damaged, replace it. Replace the foot controller if it's defective. Replace the main PCB assembly if the foot controller is connected and working properly.

Unplug the sewing machine and check the timing shutter wiring connection on the main PCB assembly. If the wiring connection is okay, clean the timing shutter. Replace the timing shutter if it doesn't work after you clean it. If the problem persists, replace the main PCB assembly.

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.

Unplug the sewing machine and check the wiring connection between the power supply PCB assembly and the main PCB assembly. Reconnect any loose wires. If the wiring connections are okay, check the output voltage from the power supply PCB. Note: You should check this output voltage only if you're completely confident in your technical ability to safely perform this test. Follow electrical safety guidelines when checking this voltage. Wear electrical safety gloves when conducting the test. Unplug the sewing machine immediately after completing the test. Check for 5 VDC between pins 2 and 3 on PCB assembly connector CN201. Check for 30 VDC between pins 4 and 3 on the same connector. If voltage on those pins is incorrect, replace the power supply PCB assembly. If the voltage is correct, replace the main PCB assembly.

Replace the main PCB assembly.

With the presser foot raised, the operator pressed the foot controller and the reverse/reinforcement stitch button. Lower the presser foot lever before continuing the operation.

With the buttonhole lever lowered, the operator selected a stitch other than the buttonhole or bar tack stitch and pressed the foot controller. Raise the buttonhole lever or select a correct stitch.

With the buttonhole lever raised, the operator selected a stitch other than the buttonhole or bar tack stitch and pressed the foot controller. Lower the buttonhole lever before continuing the operation.

With the bobbin winder shaft moved to the right, the operator pressed the reverse/reinforcement stitch button or needle position button. Disengage the bobbin winder shaft by moving it to the left before continuing the operation.

With the foot controller connected, the operator pressed the start/stop button. Disconnect the foot controller when using the start/stop button. Otherwise, operate the machine by using the foot controller.

The motor locked up because the thread is tangled. Remove the tangled thread before continuing the operation.