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(1) Error code list (SC-922)
No. Description of error detected Cause of occurrence expected Items to be checked
E000 Execution of data initialization • When the machine head is changed.
(This is not the error.) •
When the initialization operation is executed
E003 Disconnection of synchronizer • When position detection signal is not input • Check the synchronizer connector (CN33)
connector
from the sewing machine head synchronizer.
for loose connection and disconnection.
E004 Synchronizer lower position sensor • When the synchronizer has broken. • Check whether the synchronizer cord has
failure • Belt is loose. broken since the cord is caught in the
E005 Synchronizer upper position sensor • Machine head is not proper. machine head.
failure • Motor pulley is not proper. • Check the belt tension.
• Check the setting of the machine head.
•Check the setting of the motor pulley.
E007 Overload of motor • When the machine head is locked. • Check whether the thread has been
entangled in the motor pulley.
• When sewing extra-heavy material beyond • Check the motor output connector (4P)
the guarantee of the machine head. for loose connection and disconnection.
• When the motor does not run.
• Motor or driver is broken. • Check whether there is any holdup when
turning the motor by hand.
E070 Slip of belt • When the machine head is locked. • Check whether there is any holdup when
• Belt is loose. turning the motor by hand
.
•
Check the belt tension.
E071 Disconnection of motor 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 • Same as E007 • Same as E007
trimming motion
E220 Grease-up warning • When the predetermined number of • Replenish the specified places with grease
stitches has been reached. and reset.
(For the details, refer to the data of the
machine head.)
E221 Grease-up error • When the predetermined number of • Replenish the specified places with grease
stitches has been reached and the and reset.
sewing is not possible. (For the details, refer to the data of the
machine head.)
E302 Fall detection switch failure • When fall detection switch is input in • Check whether the machine head is tilted
(When the safety switch works) the state that the power is turned ON. without turning OFF the power switch
(sewing machine operation is prohibited
for safety sake).
• Check whether the fall detection switch
cord is caught in the sewing machine
or the like.
• Check whether the fall detection switch
lever is caught in something.
• Check whether the contact of the tilt de-
tection switch lever with the machine table
is inadequate. (The table has a dent or the
mounting location of the bed strut is too far)
(MF : Thread trimming knife sensor) • Improper position of the MF thread • Adjustment of the position of MF thread
trimmer trimming sensor.
• When MF head is not mounted with the
thread trimming device, set the function
setting No. 74 to “0”.
E303 Woodruff plate sensor error • Woodruff plate sensor signal cannot be • Check whether the machine head
be detected. corresponds with the machine type
setting.
• Check whether the motor encoder
connector is disconnected.
E499 Simplified program data fault • Command parameter data is out of • Re-enter the relevant simplified program.
specified range. • Set the simplified program in disable.
E704 Simplified program, sewing machine data • Program data type of which is different • Turn the power OFF.
type fault has been read.
E730 Encoder failure • When the motor signal is not properly • Check the motor signal connector (CN30)
inputted. for loose connection and disconnection.
E731 Motor hole sensor failure • Check whether the motor signal cord has
broken since the cord is caught in the
machine head.
• Check whether the inserting direction of the
motor encoder connector is wrong.
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