– 47 –
No.
Description of error
detected
Cause of occurrence expected Items to be checked
E000 Execution of data
initialization (This is
not the error.)
• When the machine head is changed.
• When the initialization operation is exe-
cuted.
E007 Overload of motor • When the machine head is locked.
• When sewing extra-heavy material
beyond the guarantee of the machine
head.
• When the motor does not run.
• Motor or driver is broken.
• Check whether the thread has been entan-
gled in the motor pulley.
• Check the motor output connector (4P) for
loose connection and disconnection.
• Check whether there is any holdup when
turning the motor by hand.
E071 Disconnection of mo-
tor output connector
• Disconnection of motor connector. • Check the motor output connector for loose
connection and disconnection.
E072 Overload of motor
at the time of thread
trimming motion
• Same as E007. • Same as E007.
E079 Continuous opera-
tion with the motor
applied with a higher
load
• The machine has been operated with the
motor applied with a load which is higher
than the normal load.
• Check whether the thread has been entan-
gled in the motor pulley.
• Check whether there is any holdup when
turning the motor by hand.
E302 Fall detection switch
failure
(When the safety
switch works)
• When fall detection switch is input in the
state that the power is turned ON.
• Check whether the machine head is tilted
without turning OFF the power switch
(sewing machine operation is prohibited for
safety sake).
E303 Semicircular plate
sensor error
• Semicircular plate sensor signal cannot
be detected.
• Check whether the motor encoder connec-
tor is disconnected.
E499
E704
Data fault • The stored data have broken.
E730 Encoder failure • When the motor signal is not properly
inputted.
• Check the motor signal connector (CN30)
for loose connection and disconnection.
• Check whether the motor signal cord has
broken since the cord is caught in the ma-
chine head.
• Check whether the inserting direction of the
motor encoder connector is wrong.
E731 Motor hole sensor
failure
E733 Inverse rotation of
motor
• This error occurs when the motor is run-
ning at 500 sti/min or more in the oppo-
site direction of that of rotation indication
during motor is running.
• Connection of the encoder of main shaft
motor is wrong.
• Connection for the electric power of main
shaft motor is wrong.
E799 Thread trimming
operation time-out
• The thread trimmer control operation is
not completed within the predetermined
time period.
E808 Solenoid short circuit • Solenoid power does not become normal
voltage.
• Check whether the machine head cord is
caught in the pulley cover or the like.
E809 Holding motion
failure
• Solenoid is not changed over to holding
motion.
• Check whether the solenoid is abnormally
heated. (CTL circuit board asm. circuit is
broken.)
E810 Solenoid current
abnormality
• Solenoid rare short-circuit. • Solenoid resistance.
E811 Overvoltage • When voltage higher than guaranteed
one is inputted.
• 220V is applied to 120V box.
• CE : 400V is applied to 230V box.
• Check whether the applied power voltage is
higher than the rated voltage + (plus) 10%
or more.
• The power PCB may have broken.
Error code list
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