Lcd Display Is Not Normal - Brother NX600 Service Manual

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Failure Investigation for Electronic Parts LCD display is not normal
Are the LCD module and the
operation F3 PCB assy. properly
connected?
Are the operation F3 PCB assy. and main
F3D PCB assy. properly connected?
Is the voltage between pins 15 & 14
on the operation F3 PCB assy.
connector (CN1) approximately 5 V?
No LCD display
Y
Y
Y
Replace main F3D PCB assy.
N
Connect the LCD module and
the operation F3 PCB assy.
properly.
N
Connect the operation F3 PCB
assy. and main F3D PCB assy.
properly.
N
Replace the single light guide
assy. or the operation F3 PCB
assy.
5 - 15

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