Brother PR655 Service Manual

Failure Investigation for Electronic Parts
Failure Investigation
for Electronic Parts
Failure Investigation
for Electronic Parts
5 - 12
The main shaft does not rotate normally.
The main shaft does not rotate
normally.
Change the main shaft encoder.
N
Y
Is the main shaft encoder deformed,
bent, or damaged due to contact?
Connect it properly.
N
Y
Is the main shaft sensor's lead properly
connected to CN19 on the main PCB?
Y
Connect it properly.
N
Is the main motor's lead properly
connected to the power supply
PCB's lead?
Connect it properly.
N
N
Is the lead which connect the
power supply PCB and the main
motor properly connected to CN4
on the power supply PCB?
Y
Change the main shaft
sensor PCB.
Y
Does the machine function normally
when the main shaft sensor PCB is
replaced with a reliable one?
Connect it properly.
N
Y
Is the lead which connect the power
supply PCB and the main PCB properly
connected to CN27 on the main PCB
and CN3 on the power supply PCB?
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Brother PR655 Specifications

General

Number of Needles	6
Built-in Designs	25
USB Port	Yes
LCD Display	Yes
Type	Embroidery Machine
Built-in Fonts	28
Maximum Speed	1000 stitches per minute
Embroidery Area	300mm x 200mm