Brother CS 80 manual Shuttle, Needle is bent or blunt Replace the needle, Replace the bobbin

S2_brotherE.book Page 103 Thursday, February 13, 2003 11:03 AM

Symptom	Probable Cause	Remedy	Reference
	The upper thread was not threaded
	correctly (for example, the spool is
	not installed correctly, the spool cap	Correct the upper threading.	page 18
	is too big for the spool being used, or
	the thread has come out of the nee-
	dle bar thread hook).
	There are knots or tangles in the	Remove any knots or tangles.	–
	thread.
	The selected needle is not appropri-	Select a needle that is appropriate	page 30
	ate for the thread being used.	for the type of stitch being used.
	The upper thread tension is too tight.	Loosen the upper thread tension.	page 50
	The thread is tangled, for example,	Remove the tangle thread. If the
		thread is tangled in the shuttle, clean	page 100
	in the shuttle.
		the shuttle.
The upper
	The needle is bent or blunt.	Replace the needle.
thread breaks.			page 31
	The needle is incorrectly installed.	Correctly install the needle.
	The area around the hole in the nee-	Replace the needle plate.	–
	dle plate is scratched, or has a burr	Contact your retailer or the nearest
	on it.	authorized service center.
	The area around the hole in the	Replace the presser foot.	–	4
	presser foot is scratched, or has a	Contact your retailer or the nearest
	burr on it.	authorized service center.
	The shuttle is scratched, or has a	Replace the shuttle.	–
		Contact your retailer or the nearest
	burr on it.
		authorized service center.
	A bobbin designed specifically for	Incorrect bobbins will not work prop-
		erly. Only use a bobbin designed spe-	page 12
	this machine is not used.
		cifically for this machine.
	The bobbin thread is incorrectly	Correctly install the bobbin thread.	page 16
	installed.
	The bobbin is scratched or does not	Replace the bobbin.	–
The lower	rotate smoothly, or has a burr on it.
thread is tangled	The thread is tangled.	Remove the tangled thread and	page 100
or breaks.
		clean the shuttle.
	A bobbin designed specifically for	Incorrect bobbins will not work prop-
		erly. Only use a bobbin designed spe-	page 12
	this machine is not used.
		cifically for this machine.
	The upper thread was not threaded	Correct the upper threading.	page 18
	correctly.
	The bobbin thread is incorrectly	Correctly install the bobbin thread.	page 16
	installed.
	The combination of fabric, thread	Select a thread and needle that are
		appropriate for the type of fabric	page 30
	and needle is not correct.
		being sewn.
The thread ten-
	The presser foot holder is incorrectly	Correctly install the presser foot
sion is incorrect.			page 37
	installed.	holder.
	The thread tension is incorrect.	Adjust the tension of the upper	page 50
		thread.
		Incorrect bobbins will not work
	A bobbin designed specifically for	properly. Only use a bobbin	page 12
	this machine is not used.	designed specifically for this
		machine.

Troubleshooting 103