Error Message - Brother PR655 Service Manual

Failure Investigation for Electronic Parts
Y-axis home position error
(Dialog message)
Is the Y area sensor's lead properly
connected to CN23 on the main
PCB?
Does the machine function normally
when the Y area sensor PCB is
replaced with a reliable one?
Is the resistance between pins 1 and 2,
and 3 and 4 of the Y motor 5.2 - 6.4 ,
respectively, when the motor's connector
(CN24) is removed from the main PCB?

Error message

Y
N
Y
Change the main PCB.
5 - 27
N
Connect it properly.
Y
Change the Y area sensor PCB.
N
Change the Y motor.