Baby Lock BLMY Service Manual page 213

Computerized sewing machine
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Failure Investigation for Electronic Parts Error is displayed
Is one of operation panel keys
(Pattern selection key etc.) stuck in a
pressed down condition?
5 - 22
"F03" is displayed
Y
Release the switch that is stuck
N
Replace operation U22 PCB assy.
or
Replace main NF3D PCB assy.

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