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Main Motor Rotation Is Not Normal - Brother CE-5500PRW Service Manual

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Failure Investigation
for Electronic Parts
The rotation of the main motor is unstable.
The rotation speed does not reach maximum.
The rotation speed can not be adjusted.
Is the main motor connector
connected to the power supply
PCB assy. (CN401) correctly?
Is the power lead wire assy.
connector connected to the power
supply PCB assy. (CN201) and the
main PCB assy. (CN5) correctly?
When the speed control lever is
moved with the power ON, does
the voltage between pin 4 and 5 of
CN1 on the SSVR PCB assy. 0.7-
4.2V DC?
5 - 12

Main motor rotation is not normal

Is the main PCB assy. attached
(Is the BW switch OFF?)
Replace the main PCB assy.
Connect it correctly.
Replace the SSVR PCB assy.
Attach the main PCB assy.


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  • Debbie Doebley Sep 04, 2018 10:52:
    I have the Brothers sewing machine CP6500, only got Spanish manual with the machine and I do not speak, etc Spanish. I was sewing with my machine then had to change the tension and now I am having a lot of trouble getting it to work properly again, thread from bobbin bunches up(?), Is there any way I can get the manual in English so I can try to get my machine working properly again? I would really appreciate any help you can give me. If need to you can email @ debbiedoeb​​m. My home address is 3122 Belgreen Place, Philadelph​ia, Pa 19154. Thank You!