Troubleshooting

If the machine stops operating correctly, check the following possible problems before requesting service. If the problem persists, contact your retailer or the nearest authorized service center.

Symptom	Probable Cause	Remedy	Reference
Symptom	Probable Cause	Remedy	Reference
	The machine is not turned on.	Turn on the machine.	page 11

	The start/stop button was not	Press the start/stop button.	page 49
	pressed.	Press the start/stop button.	page 49
The sewing	pressed.

	The presser foot lever is raised.	Lower the presser foot lever.	–
machine does	The presser foot lever is raised.	Lower the presser foot lever.	–
not operate.
not operate.	The start/stop button was pressed,	Do not use the start/stop button
		Do not use the start/stop button
		when the foot controller is con-
	even though the foot controller is	when the foot controller is con-	page 49
	even though the foot controller is	nected. To use the start/stop button,	page 49
	connected.	nected. To use the start/stop button,
	connected.	disconnect the foot controller.
		disconnect the foot controller.

	The needle is incorrectly installed.	Correctly install the needle.

	The needle clamp screw is loose.	Use the screwdriver to firmly tighten	page 35
	The needle clamp screw is loose.	the screw.	page 35
		the screw.
	The needle is bent or blunt.	Replace the needle.

	The combination of fabric, thread	Select a thread and needle that are
	The combination of fabric, thread	appropriate for the type of fabric	page 33
	and needle is not correct.	appropriate for the type of fabric	page 33
	and needle is not correct.	being sewn.
		being sewn.

	The presser foot that is used is not	Attach the presser foot that is appro-
	appropriate for the type of stitch that	priate for the type of stitch that you	page 128
	you wish to sew.	wish to sew.
	The upper thread tension is too tight.	Loosen the upper thread tension.	page 54

The needle	The fabric is pulled too much.	Lightly guide the fabric.	–

	The spool is incorrectly installed.	Correctly install the spool.	page 24
breaks.	The spool is incorrectly installed.	Correctly install the spool.	page 24

	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.	–
	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.	–
	The shuttle is scratched, or has a	Contact your retailer or the nearest
	burr on it.	Contact your retailer or the nearest
	burr on it.	authorized service center.
		authorized service center.

		Incorrect bobbins will not work
	A bobbin designed specifically for	properly. Only use a bobbin	page 18
	this machine is not used.	designed specifically for this	page 18
	this machine is not used.	designed specifically for this
		machine.

CONTENTS GETTING READY SEWING BASICS UTILITY STITCHES APPENDIX

INDEX

Troubleshooting 137

NX 400 specifications

The Brother NX 400 is a versatile and advanced sewing machine designed for both novice and experienced sewers. It stands out due to its combination of functionality, innovative features, and user-friendly interface. This machine is ideal for a wide array of sewing projects, including quilting, garment construction, and crafting.

One of the main attractions of the Brother NX 400 is its extensive range of built-in stitches. It boasts over 100 different stitch patterns, which include utility stitches, decorative stitches, and quilting stitches. This variety allows users to explore their creativity and tailor their projects to fit their personal style. The machine also features an automatic one-step buttonhole function, making it easy to create professional-looking buttonholes with consistent results.

While traditional sewing machines can be daunting for beginners, the NX 400 simplifies the learning process. It includes an intuitive LCD touch screen that provides clear navigation of the various functions and settings. This LCD screen allows users to easily select stitches, adjust stitch length and width, and even view a visual guide to help with thread tension adjustments. Users can quickly access tutorials and helpful tips for an enhanced sewing experience.

The Brother NX 400 incorporates advanced technology such as the Super Quick-Set bobbin system. This feature allows for easy bobbin insertion and ensures smooth and consistent sewing. The machine also includes an automatic needle threader, significantly reducing the time and frustration often associated with threading needles.

Another highlight of the NX 400 is its ability to handle various fabric types with ease. Whether working with lightweight silk or thicker materials like denim, this machine is equipped to deliver outstanding results. Its adjustable presser foot pressure allows for comprehensive control, ensuring uniform feeding of different fabrics.

Moreover, the Brother NX 400 is designed with convenience in mind. It includes a spacious work area and an array of accessories, such as various presser feet, a seam ripper, and quilting guides. The machine's lightweight and compact design make it portable, allowing users to bring their sewing projects to classes, workshops, or simply enjoy sewing at home without taking up too much space.

Overall, the Brother NX 400 is a reliable and feature-rich sewing machine that caters to a diverse range of sewing needs. With its blend of cutting-edge technology, user-friendly design, and creative capabilities, it is an excellent choice for anyone looking to elevate their sewing experience. Whether you are a beginner or an experienced sewist, this machine is sure to inspire creativity and produce high-quality results.

Brother NX 400 manual Troubleshooting

Models: NX 400

Troubleshooting

Probable Cause

Remedy

Troubleshooting 137

NX 400 specifications