Brother S-7220C Instruction Manual page 57

Error code
E090
・ Is the 4-pin treadle connector inside the control box disconnected?
Treadle
connector is not
connected.
E091
・ The settings in "Setting method for standard depression stroke" may be incorrect.
・ Problem with treadle unit.
E095
・ Was the power ON switch pressed while the treadle was still depressed?
・ Is the power supply voltage too low?
E111
・ The sewing machine could not stop correctly at the needle up stop position after
thread trimming.
E112
・ The needle bar stops before the needle stop position (needle up or needle down).
・ Abnormal needle up signal.
E113
・ Stopping could not be confirmed.
The sewing machine or motor do not operate when the treadle is depressed.
E130
・ Is the 4-pin motor connector inside the control box disconnected?
・ Has the sewing machine locked up?
・ Problem with control box.
E131 ・ Is the 10-pin resolver connector inside the control box disconnected?
Problem with
motor encoder
・ Problem with motor or main PCB.
signal.
E132
・ Problem with motor.
Problem with
・ Problem with drive PCB.
motor operation.
E140
・ Motor reverse operation was detected.
Motor reverse
operation.
Press the power OFF switch, and then check that the 4-pin treadle connector is
connected to connector P14 on the main PCB.
If there is a broken wire in the cord of the treadle connector, replace the treadle
unit.
Redo the settings in "Setting method for standard depression stroke".
Replace the treadle unit.
Return the treadle to the neutral position. When the treadle neutral position is
detected, the error will be cleared and normal operation will then be possible.
Check the power supply voltage.
Remove any thread scraps that may be blocking the motor.
Press the power OFF switch and then turn the machine pulley by hand and
check that it turns easily.
Check that there are no problems with the thread trimming mechanism.
Turn the pulley by hand and check that it does not turn stiffly.
Remove any thread scraps that may be stuck in the area around the rotary
hook.
Press the power OFF switch, and then check that the 10-pin resolver connector
is connected to connector P6 on the main PCB.
This error is displayed when the machine could not be immediately stopped
because of an abnormal load causing the machine speed to increase during a
stopping operation.
Turn the pulley by hand and check that it does not turn stiffly.
Remove any thread scraps that may be stuck in the area around the rotary
hook.
Press the power OFF switch and check the connection of the 4-pin motor
connector.
Press the power OFF switch and then turn the machine pulley by hand and
check that it turns easily.
Replace the control box.
Press the power OFF switch, and then check that the 10-pin resolver connector
is connected to connector P6 on the main PCB.
Replace the motor or the control box.
Replace the motor.
Replace the control box.
Replace the motor.
Possible cause
S-7220C
9. TROUBLESHOOTING
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