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APPENDIX —————————————————————————————————————————————————————————
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200
The needle
breaks.
The area around the embroidery
foot hole is damaged.
1 Scratches or Burrs
Replace the presser foot.
Consult your nearest authorized
dealer.
Sliding surface on hook race is
not smooth. There are scratches
or burrs on it.
1 Hook race area
Consult your nearest authorized
dealer.
The hook is not correctly
installed.
Consult your nearest authorized
dealer.
The hook stopper is not
correctly installed, the hook is
making a complete rotation.
Consult your nearest authorized
dealer.
The upper thread is not threaded
correctly.
The upper thread is catching
somewhere.
Pull the upper thread by hand
from below the presser foot, and
check that the thread moves
smoothly. If the thread does not
move, it is not threaded
correctly. Thread the upper
thread correctly. Make sure the
thread is caught by the needle
bar thread guide.
p.35-38
The upper thread tension is set
too high. It does not run.
Decrease the upper thread
tension and make sure tension
disc rotate when pulling on
thread.
p.86
A bobbin designed specifically
for this machine is not used.
Use the correct bobbin. p.15
The needle and the hook are not
correctly passing each other.
Hook timing may be OFF.
Consult your nearest authorized
dealer.
There is backlash play (forward/
backward) in the needle bar
case.
Consult your nearest authorized
dealer.
The thread density of the
embroidery data is too fine.
Three or more overlapping
stitches are being sewn.
Using a data design system,
correct the thread density and
overstitching settings in the
embroidery data.
p.100
Symptom Probable Cause Remedy Reference Page
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Sapphire_chapt7.fm Page 200 Friday, November 18, 2005 12:10 PM