Necchi L234A, Instruction Manual

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40
Trouble shooting guide
Before calling for service, check the following items. If the problem still persists, contact the place
of purchase or your nearest authorized dealer.
Problem Cause Correction Reference
Machine
does not run
1. Machine not properly
connected to power source.
1. Check that machine has been
properly connected to power
source.
3
Fabric does
not feed well
1. Stitch length is set too short for
the fabric being sewn.
1. Increase the stitch length
setting.
20
2. Differential feed is not set in
the correct position for the
fabric being sewn.
2. Adjust the differential feed.
18
3. Presser foot pressure not
correctly set for fabric being
sewn.
3. Adjust presser foot pressure.
19
Needle
breaks
1. Needle may not be properly
seated in the needle clamp.
1. Insert needle so that it is all the
way up in the needle clamp,
then tighten the screw securely.
6
2. Manually pulling fabric from
behind presser foot while
sewing which causes needles
to deflect.
2. Refrain from pulling fabric
manually; allow feed teeth to
draw fabric under presser foot.
-
3. Needle may not be the correct
size for the fabric being sewn.
3. Use a needle size that is
compatible for the fabric.
10
Thread
Breaks
1. Machine may not be threaded
correctly; threads threaded in
the incorrect sequence.
1. Check that machine is threaded
in correct order. 10
2. Thread is not unreeling
smoothly off the thread spool.
2. Check the thread spool to
ensure thread is not getting
caught.
-
3. Needle(s) may have a bent,
dull or broken point.
3. Replace needle(s).
6
4. The needle is inserted
incorrectly.
4. Insert the needle correctly.
6
5. Using thread that is poor
quality or has uneven filament.
5. Use good quality thread with a
smooth, even filament.
-
6. Thread tension is set too tight. 6. Loosen thread tension. 16
7. Thread is caught in one of the
thread guides.
7. Check threading path to
ensure all threads are feeding
smoothly.
-
Stitches
Skipping
1. Needle(s) may have a bent, dull
or broken point.
1. Replace needle(s).
6
2. Needle may not be properly
seated in the needle clamp.
2. Insert needle so that it is all the
way up in the needle clamp,
then tighten the screw securely
-