The Picker Does Not Function Normally - Brother PR655 Service Manual

Failure Investigation for Electronic Parts

The picker does not function normally.

Is the picker sensor's lead properly
connected to CN18 on the main
PCB?
Is the picker motor's lead properly
connected to CN5 on the main
PCB?
Does the machine function normally
when the picker sensor PCB is
replaced with a reliable one?
Is the resistance between pins 1 and 2,
and 3 and 4 of the picker motor 4.7 - 5.7Ω,
respectively, when the motor's connector
CN5 is removed from the main PCB?
The picker does not function normally.
Y
Y
N
Y
Change the main PCB.
5 - 17
N
Connect it properly.
N
Connect it properly.
Y
Change the picker sensor PCB.
N
Change the picker motor.