The Panel Switch Does Not Work - Brother PR600II Service Manual

Failure Investigation for Electronic Parts The panel switch does not work.

• The panel switch does not work,

• The panel's LED does not light.
Is the switch PCB's lead properly
connected to connector CN7 on the
panel PCB?
Does the machine function normally when the
switch PCB is replaced with a reliable one?
or
Y
Y
Change switch PCB.
N
Connect it properly.
N
Change panel PCB.
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