Brother LZ2-B855E Service Manual page 75

CN7 (MOLEX 3191-04P) (The power supply circuit board connector is secured by solder.)
Pin No. Signal name
1 Ground
2 Machine motor U phase output
3 Machine motor V phase output
4 Machine motor W phase output
CN8 (MOLEX 3191-04P) (The power supply circuit board connector is secured by solder.)
Pin No. Signal name
1 Ground
2 AC input R phase
3 AC input S phase
4 AC input T phase
Probable symptoms due to poor contact
The machine motor does not run.
Rotation of machine motor is not correct.
Error code EE4, or EE9 appears.
Probable symptoms due to poor contact
Power does not come on.
Home position can not be found.
The machine does not zigzag.
The zigzagging is not correct.
Error code Ec1, or EE3 appears.
LZ2-B855E,B856E
8. ELECTRIC COMPONENTS
8-16