Brother CS5055PRW - Pattern Cannot be Sewn Correctly

5 - 13
Electronic Parts
Failure Investigation
for Electronic Parts
Pattern cannot be sewn correctly
Pattern cannot be sewn correctly.
N
N
Y
Y
Y
Y
Replace the main PCB assy.
Attach the needle-presser
module correctly.
Replace the pulse motor.
With the power OFF, can you move the
needle bar to the left and right by hand
lightly?
N
Attach the main PCB assy.
correctly.
Is the resistance between pin 1 and
2, 3 and 4 on the Z and F pulse
motor connector 6.7-7.7Ω?
N
Connect it correctly.
Is the Z pulse motor connector
connected to the main PCB assy.
(CN8) correctly?
Is the F pulse motor connector
connected to the main PCB assy.
(CN10) correctly?
Is the main PCB assy. attached
correctly?
(Is the BW switch OFF?)