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Phenomenon Cause Corrective measure
When tilting the sewing machine,
the buzzer beeps and the sewing
machine cannot be operated.
When tilting the sewing machine
without turning OFF the power switch,
Action given on the left side is taken for
safety sake.
Tilt the sewing machine after turning
OFF the power.
Solenoids for thread trimming,
reverse feed, wiper, etc. fail to work.
Hand lamp does not light up.
When the fuse for solenoid power pro-
tection has blown out
Check the fuse for solenoid power
protection.
Even when depressing the pedal
immediately after turning ON the
power, the sewing machine does not
run. When depressing the pedal af-
ter depressing the back part of pedal
once, the sewing machine runs.
Neutral position of the pedal has varied.
(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-lifter device is attached.
Auto-lifter function is OFF. Select “Automatic presser lifter is pro-
vided.” 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-lifter device is not con-
nected to connector (CN37).
Connect the cord properly.
Touch-back switch fails to work. Presser foot is going up by auto-liter
device.
Operate the switch after the presser
foot lowered.
Auto-lifter device is not attached. How-
ever, auto-lifter function is ON.
Select “Automatic presser lifter is not
provided.” when auto-lifter device is not
attached.
Sewing machine fails to run. Motor output cord (4P) is disconnected. Connect the cord properly.
Connector (CN30) of motor signal cord
is disconnected.
Connect the cord properly.
2. Error codes
In case of the following, check again before you judge the case as trouble.
In addition, there are the following error codes in this device. These error codes interlock (or limit function)
and inform the problem so that the problem is not enlarged when any problem is discovered. When you
request our service, please conrm the error codes.
[Checking procedure of the error code]
1) Turn ON the power switch with switch 󱀖
held pressed.
2) With a bleep, serial numbers of the errors which
have occurred so far appear on the display sec-
tion A.
3) Press and switches to enable selec-
tion of the serial number. Select one of the serial
numbers you want to check and, in this state,
press switch 󱀔 to display the error code,
press switch 󱀕 to display the energized
time duration (upper four digits of hours and
minutes), or press switch 󱀖 to display the
energized time duration (lower four digits of hours
and minutes). (The aforementioned data are
displayed as long as the corresponding switch is
held pressed.)
󱀕
󱀖
Display section A
󱀔
49


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