Troubles And Corrective Measures - JUKI TL-2200QVP Instruction Manual

Troubles and Corrective Measures

If sewing difficulties occur, make sure the instructions are correctly followed. If a problem still exists, the reminders below
help to solve it.
Troubles
Stitches are 1. The needle is bent or the needle point
skipped.
2. The needle has not been attached to
Needle thread 1. The machine head has been threaded
breaks.
2. The needle thread tension is too high
3. The needle is bent or the needle point
4. The needle is not suited to the thread
The bobbin 1. The bobbin thread tension is too high.
thread breaks. 2. The rubbing of the bobbin case spring
3. Scratches on the needle hole in the
The needle 1. The needle is bent or has been
breaks.
2. The needle hits the throat plate or the
Stitches are 1. The tension of the needle thread is not
puckered.
2. When the combination of the needle
3. The needle is too thick for the material.
Stitch perfor- 1. The tension of the needle thread is not
mance is bad.
The rotation noise 1. Thread wastes accumulate in the hook.
is too heavy or
too high.
The handwheel 1. The thread is entangled and caught in
does not rotate
smoothly or does
not turn.
The sewing 1. Remaining length of thread is shorter.
machine cannot
perform sewing at
the beginning of
sewing.
2. Back tacking has not been carried out.
Case
is blunted.
the needle bar properly.
incorrectly.
or low.
is blunted.
used.
has produced a slot.
throat plate.
installed improperly.
presser foot.
balanced with that of the bobbin
thread.
and the thread is improper.
balanced with that of the bobbin
thread.
the hook.
Corrective measures
· Replace the needle.
· Attach the needle properly to the needle
bar.
· Correct the threading.
· Properly adjust the thread tension.
· Replace the needle.
· Replace the needle by the one suited to
the thread used.
· Decrease the tension.
· Replace the bobbin case.
· Replace the throat plate.
· Replace or correctly attach the needle.
· Correctly position the needle, throat plate,
or presser foot.
· Balance the tension.
· Properly correct the combination of needle
and the thread.
· Replace the needle by the one suited to
the material.
· Balance the tensions.
· Clean up the sewing machine.
· Lubricate the hook, strongly turn the
handwheel clockwise and counterclockwise
several times, then remove the thread
caught in the hook.
· Loosen the tension controller No. 1 (turn to
the left) to increase the remaining length of
thread after automatic thread trimming.
· Draw thread through the needle eyelet to
adjust the remaining length of thread to ap-
proximately 5 cm.
· Be sure to carry out back tacking by several
stitches at the beginning of sewing.
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