Error Is Displayed - Baby Lock BLMY Service Manual

Failure Investigation for Electronic Parts Error is displayed
5 - 20
"F01" is displayed
After replaceing power supply
unit F, start test mode and select
test mode "11".
Next, press the BK key. "F01"
error mode is canceled.
When the power is once turned
off and is switched on again, is it
displayed as "F01"?
N
Does the motor rotate correctly?
Y
OK
Y
Error mode is canceled again.
N
Replace main NF3D PCB assy.