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Failure Investigation for Electronic Parts
Error message
• Sewing data error
• Panel communication error
• Communication timeout error
• Data receiving command error
• Communication error
(Dialog message)
Connect them properly.
N
Y
Connect it properly.
Is lead B on the panel properly
connected to connector CN10 on
the main PCB?
N
Y
Connect it properly.
Is lead A on the panel properly
connected to connector CN9 on the
panel PCB?
N
Y
Change leads A and B on the panel.
Is the resistance between each pin at
both ends 1Ω or below when leads A
and B on the panel are removed from
the main PCB and the panel PCB?
N
Y
Change main PCB.
Does the machine function normally when the
panel PCB is replaced with a reliable one?
N
Y
Are relay connectors for leads A and B on
the panel properly connected to each other?
Change panel PCB.
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