Brother PC 3000 operation manual Trouble with threads and stitches

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	2.	Set bobbin properly and pull out the
		shuttle.		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	3.	Check the “FABRIC/THREAD/NEEDLE
		needle is not correct.		COMBINATION CHART” on page 27.
	4.	Dust is clinging under the needle plate.	4.	Remove dust by cleaning with a brush.
	5.	Upper threading is not correct.	5.	Re-thread upper thread.
4. Fabric puckers	1. Threading is not correct.		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	3.	Check the “FABRIC/THREAD/NEEDLE
		needle is not correct.		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	2.	Set needle at proper position using
		into the eye of the needle.		“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	3.	Check the “FABRIC/THREAD/NEEDLE
		needle is not correct.		COMBINATION CHART” on page 27.
	4.	Presser foot holder is not correctly	4.	Install the foot holder correctly.
		installed.
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.

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