Brother PR655 - The Panel Switch Does Not Work

Failure Investigation
for Electronic Parts
Failure Investigation for Electronic Parts
Failure Investigation
for Electronic Parts
5 - 7
The panel switch does not work.
• The panel switch does not work,
or
• The panel's LED does not light.
Connect it properly.
N
Y
Change the panel PCB.
Does the machine function normally when
the SS PCB is replaced with a reliable one?
N
Y
Is the SS PCB's lead properly
connected to connector CN2 on the
panel PCB?
Change the SS PCB.