Brother NS-10 - Cannot sew pattern well

5 - 9
Electronic Parts
Failure Investigation for Electronic Parts Cannot sew pattern well
Normal pattern is not generated
Adjust the attachment of the
needle-presser module
N
Replace the main PCB assy.
Y
Y
With the power OFF, can you lightly
move the needle bar left and right by
hand?
Replace the pulse motor
N
Y
Is the resistance between pins 1 & 2
and pins 3 & 4 on the Z pulse motor
and the F pulse motor connectors 6.7 –
7.7 Ω ?
Reconnect it correctly
Is the connector of the Z pulse motor
correctly connected to CN8 of the
main PCB assy.?
N
Reconnect it correctly
Is the connector of the F pulse motor
correctly connected to CN10 of the
main PCB assy.?
N