– 40 –
7. Automatic compensation of neutral point of the pedal sensor
Whenever the pedal sensor, spring, etc. are re-
placed, be sure to perform following operation :
1) Pressing switch
2
, turn ON the power switch.
2) Indication on the screen will be as illustrated in
6
. At this time, the value indicated in the 7 seg-
ments of four gures is the compensation value.
(Caution) 1. At this time, the pedal sensor does
not work properly if the pedal is
depressed. Do not place the foot or
any object on the pedal. Warning
sound “peeps” and the compensa-
tion value is not displayed.
2. When any thing other than number
is displayed in 7 segment of 4 dig-
its, refer to the Engineer’s Manual.
3) Turn OFF the power switch, and turn ON the
power switch again to return to the normal mode.
8.Selectionofthepedalspecications
When the pedal sensor is changed (KFL
/
PFL or
PFL
/
KFL), replace jumper
1
to t the pedal spci-
cations changed.
(Caution) 1. Pedal sensor with two springs
located at the back part of the
pedal type is PFL, and that with
one spring type is KFL. Set the
pedal sensor to PFL when lifting
the presser foot by depressing the
back part of the pedal.
2. When changing the jumper, be sure
to do the work after turning OFF
the power. If the jumper is changed
while the power is ON, the setting
does not change.
The main unit may be broken.
KFL • PFL
KFL • PFL
KFL setting
PFL setting
2
6
1
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