The Wiper Does Not Function Normally - Brother PR600II Service Manual

Failure Investigation for Electronic Parts The wiper does not function normally.

The wiper does not function normally.

Is the wiper sensor's lead properly
connected to CN13 on the main
PCB?
Is the wiper motor's lead properly
connected to CN5 on the main
PCB?
Does the machine function normally when the
wiper sensor PCB is replaced with a reliable one?
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
CN5 is removed from the main PCB?
5 - 14
Y
Y
N
Y
Change main PCB.
N
Connect it properly.
N
Connect it properly.
Y
Change wiper sensor PCB.
N
Change wiper motor.