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9. TROUBLESHOOTING
CAUTION
(1) Please make sure to turn the power switch off before adjusting the sewing machine.
(2) If the adjustment is required while the power switch on, do not step on the foot switch by mistake.
Condition
Cause
Corrective action
Reference
Upper thread is broken.
Upper thread tension is too
tight.
Adjust thread tension.
5-9
Strength of thread take up
spring is inappropriate.
Adjust thread take up spring.
6-8-2
Parts on needle plate, hook,
and presser foot touching
thread are damaged.
Grind parts or change parts.
-
The needle size is bigger than
the thread size.
Change the needle size to
suitable size.
5-2
Thread melts with heat.
Slow down the sewing speed
Operation
panel
section
Use needle cooler.
-
Bobbin thread is broken.
Bobbin thread tension is too
tight.
Adjust thread tension.
5-8
Parts on needle plate and
presser foot touching thread
are damaged.
Buff parts or change parts.
-
Bobbin case size is smaller
than the thread size.
Change the thread size to
suitable size.
-
Upper thread is pulled
from needle hole when
starting sewing.
Thread take up spring tension
is too much.
Adjust thread take up spring
tension.
6-8-2
Thread tail is short.
(Pre-tensioner spring is too
tight.)
Adjust thread tail with
pre-tension.
6-9
Sewing speed is inappropriate
when starting sewing
Use [e-stitch] function.
(Program mode > Sewing
speed group > OPLC is ON)
Operation
panel
section
Содержание PLK-J2516R-YU
Страница 1: ...INDUSTRIAL SEWING MACHINE MODEL PLK J2516R YU TECHNICAL MANUAL SEWING MACHINE HEAD A180E803P02 ...
Страница 68: ......
Страница 70: ...Stand part 1 Thickness 2mm Stand part 2 Thickness 2mm ...
Страница 72: ...Printed in Japan ...