Brother International PC-3000 Users Manual - English - Page 96

Trouble with threads and stitches

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Trouble with threads and stitches Before calling for service, check the following items. If the problem still persists, contact the place of purchase or your nearest authorized Brother dealer. Symptom Probable cause Remedy 1. Upper thread breaks 1. Upper threading is not correct. 1. Re-thread upper thread. 2. Upper thread is entangled. 2. Remove thread ends in the race or shuttle. 3. Spool of thread is not correctly set. 3. Set spool of thread correctly. 4. Correct needle is not used. 4. Change to proper needle. 5. Shuttle is damaged. 5. Contact service center. 2. Bobbin thread breaks 1. Upper thread is entangled. 1. Remove thread ends in the race or inner shuttle. 2. Bobbin is not threaded properly in the shuttle. 2. Set bobbin properly and pull out the bobbin thread. 3. Skipped stitches 1. Needle is not correctly inserted. 1. Insert needle properly. 2. Correct needle is not used. 2. Change to proper needle. 3. The combination of fabric, thread and needle is not correct. 3. Check the "FABRIC/THREAD/NEEDLE COMBINATION CHART" on page 27. 4. Dust is clinging under the needle plate. 4. Remove dust by cleaning with a brush. 4. Fabric puckers 5. Upper threading is not correct. 1. Threading is not correct. 5. Re-thread upper thread. 1. Re-thread upper and bobbin thread correctly. 2. Correct needle is not used. 2. Change to proper needle. 3. Combination of fabric, thread and needle is not correct. 3. Check the "FABRIC/THREAD/NEEDLE COMBINATION CHART" on page 27. 4. Thread tension is too tight. 4. Refer to "THREAD TENSION" on page 22. 5. Inability to thread needle 1. Needle position is not correct. 1. Set needle at proper position using "NEEDLE POSITION" button. 2. Hook of needle threader does not fit into the eye of the needle. 2. Set needle at proper position using "NEEDLE POSITION" button. 6. Inability for thread tension control 1. Upper threading is not correct. 1. Re-thread upper thread. 2. Set of bobbin thread is not correct. 2. Set bobbin properly and pull out the bobbin thread. 3. Combination of fabric, thread and needle is not correct. 3. Check the "FABRIC/THREAD/NEEDLE COMBINATION CHART" on page 27. 4. Presser foot holder is not correctly installed. 4. Install the foot holder correctly. 7. Shifted sewing position of fonts and 1. Pattern sewing position is not correctly 1. Refer to "ADJUSTING STITCH patterns adjusted. PATTERNS" on page 87. 93

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93
Before calling for service, check the following items. If the problem still persists, contact the place of purchase
or your nearest authorized Brother dealer.
Trouble with threads and stitches
Probable cause
1. Upper threading is not correct.
2. Upper thread is entangled.
3. Spool of thread is not correctly set.
4. Correct needle is not used.
5. Shuttle is damaged.
1. Upper thread is entangled.
2. Bobbin is not threaded properly in the
shuttle.
1. Needle is not correctly inserted.
2. Correct needle is not used.
3. The combination of fabric, thread and
needle is not correct.
4. Dust is clinging under the needle plate.
5. Upper threading is not correct.
1. Threading is not correct.
2. Correct needle is not used.
3. Combination of fabric, thread and
needle is not correct.
4. Thread tension is too tight.
1. Needle position is not correct.
2. Hook of needle threader does not fit
into the eye of the needle.
1. Upper threading is not correct.
2. Set of bobbin thread is not correct.
3. Combination of fabric, thread and
needle is not correct.
4. Presser foot holder is not correctly
installed.
1. Pattern sewing position is not correctly
adjusted.
Remedy
1. Re-thread upper thread.
2. Remove thread ends in the race or
shuttle.
3. Set spool of thread correctly.
4. Change to proper needle.
5.
Contact service center.
1. Remove thread ends in the race or
inner shuttle.
2. Set bobbin properly and pull out the
bobbin thread.
1.
Insert needle properly.
2. Change to proper needle.
3. Check the “FABRIC/THREAD/NEEDLE
COMBINATION CHART” on page 27.
4. Remove dust by cleaning with a brush.
5. Re-thread upper thread.
1. Re-thread upper and bobbin thread
correctly.
2. Change to proper needle.
3. Check the “FABRIC/THREAD/NEEDLE
COMBINATION CHART” on page 27.
4. Refer to “THREAD TENSION” on page
22.
1. Set needle at proper position using
“NEEDLE POSITION” button.
2. Set needle at proper position using
“NEEDLE POSITION” button.
1. Re-thread upper thread.
2. Set bobbin properly and pull out the
bobbin thread.
3. Check the “FABRIC/THREAD/NEEDLE
COMBINATION CHART” on page 27.
4. Install the foot holder correctly.
1. Refer to “ADJUSTING STITCH
PATTERNS” on page 87.
Symptom
1. Upper thread breaks
2. Bobbin thread breaks
3. Skipped stitches
4. Fabric puckers
5. Inability to thread needle
6. Inability for thread tension control
7. Shifted sewing position of fonts and
patterns