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109
10. At A tIME LIKE tHIS !
In case of the following, check again before you judge the case as trouble.
Phenomenon
Buzzer peeps and the sewng
machne fals to operate when
the machne head s tlted.
Solenods for thread trmmng,
reverse sttchng, wper, etc. fal
to work.
The sewng machne fals to run
even when depressng the pedal
mmedately after turnng ON
the power. The sewng machne
runs when depressng the pedal
agan after depressng the back
part of pedal.
The sewng machne fals to stop
even when the pedal s returned
to ts neutral poston.
Stop poston of the sewng ma-
chne vares. (Irregular)
Presser foot does not lft al-
though auto-lfter s nstalled.
Reverse feed sttchng swtch
fals to work.
The sewng machne fals to run.
Panel swtch fals to work.
Cause
The measures descrbed on the left are
taken for safety when tltng the machne
head wthout turnng OFF the power.
In case the fuse has blown.
Neutral poston of the pedal s slpped.
(When changng the sprng pressure
of pedal, the neutral poston may be
slpped.)
In case the screw of handwheel of the
machne s forgotten to be tghtened when
adjustng the stop poston of needle.
Auto-lfter functon s set to OFF.
Pedal type s set to KFL.
Cord of auto-lfter s not connected to
connector.
Presser foot s lftng by means of auto-
lfter.
Auto-lfter functon s set to ON although
auto-lfter s not nstalled.
Motor output cord (4P) s dsconnected.
Connector of motor sgnal cord s ds-
connected.
Key lock s locked.
Correctve measure
Tlt the machne head after turnng OFF
the power.
Check the fuse.
Execute automatc compensaton of
neutral poston of pedal sensor.
(Functon settng No. 103)
Securely tghten the screw of hand-
wheel.
Select “FL ON” by means of auto-lfter
functon settng selecton.
(Functon settng No. 23)
Change the jumper to PFL settng when
lftng the presser foot by depressng
the back part of pedal.
Correctly connect the cord.
Operate the swtch after the presser
foot has come down.
Select “FL OFF” when auto-lfter s not
nstalled. (Functon settng No. 23)
Correctly connect the cord.
Correctly connect the cord.
Change the key lock to the proper level.
P.70
Confir mation