Brother PR600 Service Manual

5 - 8
Failure Investigation for Electronic Parts The needle bar does not move normally.
The needle bar does not move normally.
Connect it properly.
N
Y
Y
Is the color change sensor's lead properly
connected to connecter CN12 on the main PCB?
Connect it properly.
N
Y
Is the index sensor's lead properly connected
to connecter CN22 on the main PCB?
Connect it properly.
N
Y
Is the index motor's lead properly connected
to connector CN4 on the main PCB?
Change color change
sensor.
N
Y
Does the voltage between pins 1 and 3 of
connector CN12 on the main PCB vary from
0 to 3V at each needle bar position when
the index motor's gear is rotated by hand?
Change index sensor.
N
Y
Does the voltage between pins 1 and 3 of connector
CN22 on the main PCB vary from 0V at the position of
the 1st needle bar to 3V at the position of the 2nd needle
bar when the index motor's gear is rotated by hand?
Change index motor.
N
Is the resistance between pins 1 and 2,
and 3 and 4 of the index motor 4.7 - 5.7Ω,
respectively, when the motor's connector
(CN4) is removed from the main PCB?
Change main PCB.

Brother PR600 Specifications

General

Type	Embroidery machine
LCD Screen	Yes
USB Port	Yes
Built-in Memory	Yes
Connectivity	USB
Maximum Embroidery Area	200mm
Embroidery Area	200mm
Needle Count	6 needles