Brother Computerized Sewing and Quilting Machine operation manual 143, Problem Cause Solution

		TROUBLESHOOTING
Problem	Cause	Solution	Page
High-pitched sound while	Dust or lint is caught in the feed dogs.	Remove the dust or lint.	138
sewing
	Pieces of thread are caught in the race (bobbin	Clean the race (bobbin case).	138
	case).
	The upper threading is incorrect.	Check the procedure for threading the machine	29
		and rethread it correctly.
	There are scratches on the race (bobbin case).	Replace the race (bobbin case), or consult your	−
		authorized dealer.
Cannot thread the needle	The needle is not in the correct position.	Press the “Needle Position” button to raise the	11
		needle.
	The threading hook does not pass through the	Press the “Needle Position” button to raise the	11
	eye of the needle.	needle.
	The needle is installed incorrectly.	Reinstall the needle correctly.	35
Thread tension is incorrect	The upper threading is incorrect.	Check the procedure for threading the machine	29
		and rethread it correctly.
	Bobbin is set incorrectly.	Reset the bobbin thread correctly.	28
	The thread or needle is not suitable for the type	Check the table of fabric, thread and needle	37
	of fabric being sewn.	combinations, and select the appropriate
		combination.
	The presser foot holder is not attached	Reattach the presser foot holder correctly.	59
	correctly.
	The thread tension is set incorrectly.	Adjust the thread tension.	45
Character pattern does not	The wrong presser foot was used.	Attach the correct presser foot.	151
sew out correctly
	Pattern adjustment settings were set incorrectly.	Correct the pattern adjustment settings.	106
	The thread tension is set incorrectly.	Adjust the thread tension.	45
Needle breaks	The needle is installed incorrectly.	Reinstall the needle correctly.	35
	The needle clamp screw is not tightened.	Tighten the needle clamp screw.	36
	The needle is bent or blunt.	Replace the needle with a new one.	35
	The thread or needle is not suitable for the type	Check the table of fabric, thread and needle	37
	of fabric being sewn.	combinations, and select the appropriate
		combination.
	The wrong presser foot was used.	Attach the correct presser foot.	151
	The upper thread tension is too strong.	Adjust the thread tension.	45
	The fabric is pulled during sewing.	Do not pull the fabric during sewing.	−
	The spool is installed incorrectly.	Reinstall the spool correctly.	30
	There are scratches around the hole in the	Replace the needle plate, or consult your	−
	needle plate.	authorized retailer.
	There are scratches around the hole(s) in the	Replace the presser foot, or consult your	−
	presser foot.	authorized retailer.
	There are scratches on the race (bobbin case).	Replace the race (bobbin case), or consult your	−
		authorized retailer.
	The needle is defective.	Replace the needle.	35
Fabric does not feed	The feed dogs are lowered.	Press the drop feed key to raise the feed dogs.	21, 62
through the machine
	The stitches are too close together.	Lengthen the stitch length.	44
	The wrong presser foot was used.	Attach the correct presser foot.	151
	The needle is bent or blunt.	Replace the needle with a new one.	35
	The thread is tangled.	Use scissors, etc., to cut the tangled thread and	−
		remove it from the race (bobbin case), etc.
Machine does not operate	There is no pattern selected.	Select a pattern.	52, 102
	The “Start/Stop” button was not pressed.	Press the “Start/Stop” button.	40
	The main power switch is not turned on.	Turn the main power to on.	18
	The presser foot is not lowered.	Lower the presser foot.	40
	The “Start/Stop” button was pressed while the	Remove the foot controller, or use the foot	11, 41
	foot controller is connected.	controller to operate the machine.
LCD cannot be read	The LCD contrast is not properly adjusted.	Adjust the LCD contrast.	22, 140

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Appendix

143