Power Does Not Come On - Brother NX600 Service Manual

Failure Investigation for Electronic Parts Power does not come on
When the power is turned ON, the
buzzer does not sound
With the power cord plugged into an
outlet, is the voltage between pins 1 and
2 on the cord reel connector 100 V AC?
Are the voltages between pins 3 & 4,
pins 5 & 4 and pins 6 & 7 of CN14 on
the Main PCB assy. F3D normal?
• Pins 3 – 4 5 V DC
• Pins 5 – 4 26 V DC
• Pins 6 – 7 26 V DC
Does the buzzer sound when the power
is turned ON with the SS-VR F2 PCB
assy. connector disconnected from the
F2 PCB assy.?
Does the buzzer sound when the power
is turned ON with the operation F3 PCB
assy. connector disconnected from the
main F3 PCB assy.?
5 - 2
Y
Y
Y
Y
Replace main F3D PCB assy.
N
Replace cord reel
N
Replace power supply F
N
Replace the SS-VR F2 PCB
assy.
N
Replace operation F3 PCB
assy.