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2. Error codes
In case of the following, check again before you judge the case as trouble.
Phenomenon
When tilting the sewing machine,
the buzzer beeps and the sewing
machine cannot be operated.
Solenoids for thread trimming,
reverse feed, wiper, etc. fail to work.
Hand lamp does not light up.
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.
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.
Touch-back switch fails to work.
Sewing machine fails to run.
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 confirm the error codes.
Display section A
❾
Cause
When tilting the sewing machine
without turning OFF the power switch,
Action given on the left side is taken for
safety sake.
When the fuse for solenoid power pro-
tection has blown out
Neutral position of the pedal has varied.
(Neutral position may be shifted when
changing spring pressure of the pedal
or the like.)
Auto-lifter function is OFF.
Pedal system is set to KFL system.
Cord of auto-lifter device is not con-
nected to connector (CN37).
Presser foot is going up by auto-liter
device.
Auto-lifter device is not attached. How-
ever, auto-lifter function is ON.
Motor output cord (4P) is disconnected. Connect the cord properly.
Connector (CN30) of motor signal cord
is disconnected.
[Checking procedure of the error code]
1) Turn ON the power switch with
2) With a bleep, serial numbers of the errors which
3) Press
– 50 –
Corrective measure
Tilt the sewing machine after turning
OFF the power.
Check the fuse for solenoid power
protection.
Execute the automatic neutral correc-
tion function of the pedal sensor.
Select "Automatic presser lifter is pro-
vided." by auto-lifter function selection.
Change the jumper to PFL setting to lift
the presser foot by depressing the back
part of the pedal.
Connect the cord properly.
Operate the switch after the presser
foot lowered.
Select "Automatic presser lifter is not
provided." when auto-lifter device is not
attached.
Connect the cord properly.
held pressed.
have occurred so far appear on the display sec-
tion A.
switches ❾ to enable selec-
and
tion of the serial number. Select one of the serial
numbers you want to check and, in this state,
switch to display the error code,
press
switch to display the energized
press
time duration (upper four digits of hours and
minutes), or press
energized time duration (lower four digits of hours
and minutes). (The aforementioned data are
displayed as long as the corresponding switch is
held pressed.)
switch
switch to display the
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