Brother PR655 - The Wiper Does Not Function Normally

Failure Investigation
for Electronic Parts
Failure Investigation for Electronic Parts
Failure Investigation
for Electronic Parts
5 - 15
The wiper does not function normally.
The wiper does not function normally.
Connect it properly.
N
Y
Y
Is the wiper sensor's lead properly
connected to CN16 on the main
PCB?
Connect it properly.
N
Y
Is the wiper motor's lead properly
connected to CN7 on the main
PCB?
Change the wiper sensor PCB.
Y
Does the machine function normally
when the wiper sensor PCB is
replaced with a reliable one?
N
Change the wiper motor.
N
Is the resistance between pins 1 and 2,
and 3 and 4 of the wiper motor 4.7 - 5.7Ω,
respectively, when the motor's connector
CN7 is removed from the main PCB?
Change the main PCB.