In case of the following, check again before you judge the case as trouble.
Phenomenon Cause Corrective measure
When tilting the sewing machine, the
buzzer beeps and the sewing machine
cannot be operated.
Soleno
ids for thread trimming
When tilting the sewing machine with-
out
turning OFF the power switch, Ac-
t
ion given on the left side is taken for
safety sake.
Til
t the sewing machine after turning
OFF the power.
Soleno
ids for thread trimming, reverse
feed, wiper, etc. fail to work. Hand
lamp does not light up.
When the fuse for solenoid power
protection has blown out
Check the fuse for solenoid power pro-
tect
ion.
Even when depressing the pedal im-
med
iately after turning ON the power,
the sewing machine does not run.
When depressing the pedal after de-
press
ing the back part of pedal once,
the sewing machine runs.
Neutral position of the pedal has var
-
i
ed.
(Neutral position may be shifted when
changing spring pressure of the pedal
or the like.)
Execute the automatic neutral correc-
tion function of the pedal sensor.
The sewing machine does not stop
even when the pedal is returned to its
neutral position.
Presser foot does not go up even
when auto-l
ifter device is attached.
Auto-lifter function is OFF. Select “FL ON” by auto-lifter function
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-l
ifter device is not con-
nected to connector (CN37).
Connect the cord properly.
T
ouch-back switch fails to work. Presser foot is going up by auto-liter
device.
Operate the switch after the presser
foot lowered.
Auto-l
ifter device is not attached. How-
ever
, auto-lifter function is ON.
Select “FL OFF” when auto-lifter de-
vice is not attached.
Sewing machine fails to run. Motor output cord (4P) is disconnected. Connect the cord properly.
Connector (CN30) of motor s
ignal cord
is disconnected.
Connect the cord properly.
4. Error codes
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