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(1) Error code list (SC-910/SC-910A)
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 (CN30)
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 broken since the cord is caught in the
E005 Synchronizer upper position sensor machine head.
failure
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.
E008 Machine head connector failure • When the machine head connector is • Check the machine head connector
(Resistance pack) not properly read.
(CN31) for loose connection and disconnection.
E302 Tilt detection switch • 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.
E343 Bobbin thread remaining amount sensor • When the position of the detection bar • Check whether the detection bar of the
unit failure of the AE device is shifted from the AE device has returned to the correct
home position. position.
• Check whether the function setting No. 57
has been mistakenly set.
• Check the AE device connectors (CN121,
CN123) for loose connection and
disconnection.
• Check whether the AE device cord has
broken since the cord is caught in the
machine head.
E730 Encoder failure • When the motor signal is not properly • Check the motor signal connector
inputted. (CN38,CN39) for loose connection and
E731 Motor hole sensor failure disconnection.
• Check whether the motor signal cord has
broken since the cord is caught in the
machine head.
E810 Solenoid short-circuit •
When the short-circuited solenoid is desired
• Check whether the solenoid is short-
to be driven. circuited.
E811 Overvoltage • When voltage higher than guaranteed • Check whether the applied power voltage
one is inputted. is higher than the rated voltage + (plus) 10%
or more.
• 200V has been inputted to SC-910 of • Check whether 100V/200V changeover
100V specifications. connector is improperly set.
• JUS : 220V is applied to the box of 120V. In the aforementioned cases, POWER
• CE : 400V is applied to the box of 230V. p.c.b is broken.
E813 Low voltage • When voltage lower than guaranteed • Check whether the voltage is lower than
one is inputted. the rated voltage - (minus) 10% or less.
• 100V has been inputted to SC-910 of • Check whether 100V/200V changeover
200V specifications. connector is improperly set.
• JUS : 120V is applied to the box of 220V.
•Inner circuit is broken by the applied • Check whether fuse or regenerative
overvoltage resistance is broken.
E906 Communication trouble between • Operation panel cord is disconnected. • Check whether operation panel connectors
operation panels • Operation panel is broken. (CN34 and CN35) are loosened or
disconnected.
• Check whether operation panel cord is
disconnected since the cord is caught
with machine head.
E924 Motor driver failure • Motor driver has broken.
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