Brother PR600 - The Power Is Not Turned on

5 - 5
Failure Investigation
for Electronic Parts
Failure Investigation for Electronic Parts The power is not turned on.
From the previous page
Change leads A and B on the panel.
N
Is the inverter lead properly connected to
connector CN13 on the panel PCB and
connector CN1 on the inverter PCB?
Y
Change inverter leads.
N
Is the resistance between each pin at both ends
1 Ω or below when inverter leads are removed
from the panel PCB and the inverter PCB?
Y
Change inverter leads.
Y
Does the machine function normally when the
inverter PCB is replaced with a reliable one?
N
Connect it properly.
N
Is the LCD's lead properly connected to
connector CN2 on the inverter PCB?
Y
Connect it properly.
N
Is the FFC for the LCD properly connected to connector
CN1 on the panel PCB and the LCD's connector?
Y
Change FFC for the LCD.
Y
Does the machine function normally when the
FFC for the LCD is replaced with a reliable one?
N
Change panel PCB.
N
Does the machine function normally when the
LCD module is replaced with a reliable one?
Y
Change LCD modules.