Operation Manual

113
Case Cause (Reason) Solution
Refer-
ence
page
● The needle threading
lever will not return to
the original position and
the machine can not turn
properly.
(This is in case the hook
of needle threader re
-
mains in the needles eye.)
●
Hand wheel is turned by mistake
while the needle threading lever is
in down position. (in the process of
threading to the needle.)
● Turn hand wheel slightly away
from you. (to the opposite side
when sewing).
-
●
The machine will not start
even when start/stop but
-
ton is pressed.
●
The foot controller is plugged in. ● Start/stop button can function
when foot controller is removed.
8
●
Thread breaks.
●
Stitch is skipped.
●
The machine is incorrectly threaded.
●
There is knot or knurl on the thread.
●
The setting of manual thread tension
is incorrect.
●
The needle is bent or the tip of nee-
dle is broken.
●
The needle is installed incorrectly
.
● Threading of bobbin thread is not
correct.
●
The bobbin can not turn smoothly
inside the hook holder
.
●
The needle size does not match the
thread.
●
Thread take-up is not threaded.
●
Rethread the machine correctly
.
●
Remove knot or knurl from thread.
●
Adjust thread tension manually
according to fabrics and thread to
be used.
●
Change needle.
●
Install needle correctly
.
●
Check the correct way of setting
bobbin thread.
●
Check the correct way of winding
bobbin thread.
●
Check the combination of thread
and needle.
●
Rethread the machine correctly.
22
-
28
26
26
20
-
27
22
●
Thread tension is not
good.
● The needle thread is threaded in
correctly
.
● The bobbin thread is threaded incor
-
rectly.
●
The direction of spool cap doesn’t
match the spool.
●
Rethread the machine correctly
.
●
Check the correct way of setting
bobbin thread.
●
Attach the spool cap in a correct
direction.
22
20
22
●
Puckering occurs. ● The stitch length is too large on light-
weight fabrics.
●
The needle tip is broken.
●
Make the stitch length smaller
(shorter).
●
Change needle.
43
26
●
sign is shown on the
LCD display.
● Safety mechanism works when ma
-
chine stops due to motor lock.
Or
, when the voltage fault has oc-
curred.
●
The safety mechanism will be
reset in a short while and the ma-
chine will return to normal. (At this
time, the start/stop button will not
light up.)
-