ZOJE ZJ2842-BD, Руководство по эксплуатации

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63
Caution
If problems 2 to 6 above are not due to the cause on the right,check the needle and feed timing,or the
needle and rotary hook timing.
If the above suggestions do not remedy the problem,turn off the power and contact the of purchase.
Caution
If problems 2 to 6 above are not due to the cause on the right,check the needle and feed timing,or the
needle and rotary hook timing.
If the above suggestions do not remedy the problem,turn off the power and contact the of purchase.
4. Skipped stitches 4. Skipped stitches
5. Poor thread tightening 5. Poor thread tightening
6. Broken needles 6. Broken needles
Is the needle tip bent? Is the needle tip blunt?
If the needle tip is bent or broken,replace the needle.
Is the needle properly installed?
If it is incorrect, install the needle correctly.
Is the machine properly threaded?
If it is incorrect, thread the thread correctly.
Is the presser foot pressure too weak?
Adjust the presser foot pressure.
Is the sewing speed too fast?
depending on the type of material,skipped stitches
may occur ever when sewing at the maximum,sewing
speed is is within the standard rated range. In such cases,
reduce the operating speed by selecting a motor pulley
that is one size smaller.
Is the needle tip bent? Is the needle tip blunt?
If the needle tip is bent or broken,replace the needle.
Is the needle properly installed?
If it is incorrect, install the needle correctly.
Is the machine properly threaded?
If it is incorrect, thread the thread correctly.
Is the presser foot pressure too weak?
Adjust the presser foot pressure.
Is the sewing speed too fast?
depending on the type of material,skipped stitches
may occur ever when sewing at the maximum,sewing
speed is is within the standard rated range. In such cases,
reduce the operating speed by selecting a motor pulley
that is one size smaller.
Is the machine properly threaded?
If it is incorrect,thread the thread correctly.
Is the thread take-up spring operationg range too
small?
Adjust the operationg range of the thread take-up spring.
Is the needle thread tension and bobbin thread
tension too low?
Adjust the upper and lower thread tension.
Is the bobbin scratched?
If the bobbin is damaged,smooth it with an
oiled grindstone or replace it. Is the machine properly threaded?
If it is incorrect,thread the thread correctly.
Is the thread take-up spring operationg range too
small?
Adjust the operationg range of the thread take-up spring.
Is the needle thread tension and bobbin thread
tension too low?
Adjust the upper and lower thread tension.
Is the bobbin scratched?
If the bobbin is damaged,smooth it with an
oiled grindstone or replace it.
Is the material being pushed with excessive
force during sewing?
If the needle tip is bent or broken,replace the needle.
Dose the needle pass the center of the needle hole in
the feed dog?
Check the needle down position. If the needle
dose not drop into the middle of the needle hole in the
feed dog re-install the feed dog.
[2842,2872]
If the needle bar has been rumed,turn it again to set it
to the correct position.
Caution
It is extremely dangerous to leave any pieces of
broken needle sticking in the material. If the needle
bradks,search for all pleces until the whole of the needle
eis found again. Is the material being pushed with excessive
force during sewing?
If the needle tip is bent or broken,replace the needle.
Dose the needle pass the center of the needle hole in
the feed dog?
Check the needle down position. If the needle
dose not drop into the middle of the needle hole in the
feed dog re-install the feed dog.
[2842,2872]
If the needle bar has been rumed,turn it again to set it
to the correct position.
Caution
It is extremely dangerous to leave any pieces of
broken needle sticking in the material. If the needle
bradks,search for all pleces until the whole of the needle
eis found again.
32
13
13
16
21
2~5
13
13
16
21
2~5
16
25
20,21
16
25
20,21