Error Code List (Sc-922) - JUKI SC-922 Engineer's Manual

(1) Error code list (SC-922)

No. Description of error detected
E000 Execution of data initialization
(This is not the error.)
E003 Disconnection of synchronizer
connector
E004 Synchronizer lower position sensor
failure
E005 Synchronizer upper position sensor
failure
E007 Overload of motor
E070 Slip of belt
E071 Disconnection of motor output connector
E072 Overload of motor at the time of thread
trimming motion
E220 Grease-up warning
E221 Grease-up error
E302 Fall detection switch failure
(When the safety switch works)
(MF : Thread trimming knife sensor)
E303 Woodruff plate sensor error
E499 Simplified program data fault
E704 Simplified program, sewing machine data
type fault
E730 Encoder failure
E731 Motor hole sensor failure
Cause of occurrence expected
• When the machine head is changed.
• When the initialization operation is executed
• When position detection signal is not input
from the sewing machine head synchronizer.
• When the synchronizer has broken.
• Belt is loose.
• Machine head is not proper.
• Motor pulley is not proper.
• When the machine head is locked.
• When sewing extra-heavy material beyond • Check the motor output connector (4P)
the guarantee of the machine head.
• When the motor does not run.
• Motor or driver is broken.
• When the machine head is locked.
• Belt is loose.
• Disconnection of motor connector
• Same as E007
• When the predetermined number of
stitches has been reached.
• When the predetermined number of
stitches has been reached and the
sewing is not possible.
• When fall detection switch is input in
the state that the power is turned ON.
• Improper position of the MF thread
trimmer
• Woodruff plate sensor signal cannot be
be detected.
• Command parameter data is out of
specified range.
• Program data type of which is different
has been read.
• When the motor signal is not properly
inputted.
– 73 –
Items to be checked
• Check the synchronizer connector (CN33)
for loose connection and disconnection.
• Check whether the synchronizer cord has
broken since the cord is caught in the
machine head.
• Check the belt tension.
• Check the setting of the machine head.
• Check the setting of the motor pulley.
• Check whether the thread has been
entangled in the motor pulley.
for loose connection and disconnection.
• Check whether there is any holdup when
turning the motor by hand.
• Check whether there is any holdup when
turning the motor by hand.
• Check the belt tension.
• Check the motor output connector for
loose connection and disconnection.
• Same as E007
• Replenish the specified places with grease
and reset.
(For the details, refer to the data of the
machine head.)
• Replenish the specified places with grease
and reset.
(For the details, refer to the data of the
machine head.)
• Check whether the machine head is tilted
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)
• Adjustment of the position of MF thread
trimming sensor.
• When MF head is not mounted with the
thread trimming device, set the function
setting No. 74 to "0".
• Check whether the machine head
corresponds with the machine type
setting.
• Check whether the motor encoder
connector is disconnected.
• Re-enter the relevant simplified program.
• Set the simplified program in disable.
• Turn the power OFF.
• 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
machine head.
• Check whether the inserting direction of the
motor encoder connector is wrong.