Baby Lock BLMY Service Manual page 214

Failure Investigation for Electronic Parts Error is displayed
Are the foot controller jack assy. lead
wires broken?
Is the foot controller jack assy. correctly
connected to the main NF3D PCB
assy. (CN15)?
When the foot controller is replaced
with a new one, does it work
correctly?
"F04" is displayed
N
Y
Y
Replace the foot controller.
Y
Replace the foot controller jack
assy.
Correctly connect the foot
N
controller jack assy. to the
main NF3D PCB assy. (CN15).
N Replace the main NF3D PCB
assy.
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