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15. REGARDING ERROR DISPLAY (SC-910/SC-910A)
In case of the following, check again before you judge the case as trouble.
No.
Phenomenon
Cause
Corrective measure
1
When tilting the sewing machine, the
When tilting the sewing machine
Tilt the sewing machine after turning
buzzer beeps and the sewing
without turning OFF the power
OFF the power.
machine cannot be operated.
switch, Action given on the left side
is taken for safety sake.
2
Solenoids for thread trimming,
When the fuse for solenoid power
Check the fuse for solenoid power
reverse feed, wiper, etc. fail to work.
protection has blown out
protection.
Hand lamp does not light up.
3
Even when depressing the pedal
Neutral position of the pedal has
Execute the automatic neutral
immediately after turning ON the
varied.
correction function of the pedal sensor.
power, the sewing machine does not
(Neutral position may be shifted
run. When depressing the pedal after when changing spring pressure of
depressing the back part of pedal
the pedal or the like.)
once, the sewing machine runs.
4
The sewing machine does not stop
even when the pedal is returned to
its neutral position.
5
Stop position of the sewing machine
When tightening the screw in the
Securely tighten the screw in the
varies (irregular).
handwheel is forgotten at the time of
handwheel.
adjustment of needle stop position.
6
Presser foot does not go up even
Auto-lifter function is OFF.
Select “FL ON” by auto-lifter function
when auto-lifter device is attached.
selection.
Pedal system is set to KFL system.
Change the jumper to PFL setting to
lift the presser foot by depressing the
back part of the pedal.
Cord of auto-lifter device is not
Connect the cord properly.
connected to connector (CN40).
7
Touch-back switch fails to work.
Presser foot is going up by auto-liter
Operate the switch after the presser
device.
foot lowered.
Auto-lifter device is not attached.
Select “FL OFF” when auto-lifter
However, auto-lifter function is ON.
device is not attached.
8
UP position move fails to work when
The mode is in the function setting
Remove the front cover, and arrange
all lamps on the panel light up.
mode.
the cords by the regular binding
The switch on the CTL p.c.b. is
procedure described in the Instruction
pressed by the bound cords and the
Manual.
aforementioned mode resulted.
9
Sewing machine fails to run.
Motor output cord (4P) is
Connect the cord properly.
disconnected.
Connector (CN38,CN39) of motor
Connect the cord properly.
signal cord is disconnected.
