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Chapter 12 Troubleshooting

Symptom		Measures
The needle bar case lock error	•	Is the INDEX motor rotating?
occurs.		→ If not, refer to the block diagram showing the cable connections and

		check to see if connection from the INDEX motor to the main PCB
		is proper.
		Check the resistance values of pins 1 and 3 and pins 4 and 6 at the
		connector section of the INDEX motor. The normal resistance
		value is approximately 6.6Ω.
		→ If it is not normal, replace the INDEX motor with a new one. Also
		replace the drive PCB with a new one.
	•	Manually turn the color change pulley.
		→ If it is abnormally heavy, adjust the color change mechanism and
		the needle cap case.
	•	Replace the needle bar position sensor with a new one.
	•	Replace the I/O PCB 0 with a new one.
X-axis or Y-axis home position	•	Was the XY carriage moving?
detection error occurs.		→ If so, refer to the block diagram showing the cable connections and

		check to see if connection from the X and Y area sensor to the drive
		PCB is proper.
	•	Was the XY motor rotating?
		→ If so, check the XY carriage mechanism.
	•	If the XY motor is not rotating, refer to the cable connection block
		diagram and check to see if connection from the XY motor to the drive
		PCB is proper.
The thread breakage error frequently	•	Enter the CASE test mode and turn the thread breakage sensor pulley
occurs although thread is not broken.		corresponding to each needle bar of the head with which this error
		occurs while switching the needle bar from number 1 in ascending
		order and check to see that the red LED on the head blinks.
		→ If there is no problem, lower the thread breakage sensitivity value of
		the machine controller. (The standard value is 0.)
	•	Check connection from the thread breakage sensor PCB to the thread
		tension base PCB if it does not blink.
	•	Replace the thread breakage sensor PCB with a new one.

The X-axis motor connector	•	Refer to the block diagram showing the cable connections and check
connection error occurs.		the connection from the two X motors (one X motors in four head
		models) on the left and right to the main PCB.
The main shaft motor lock error	•	Enter the encoder signal mode and manually turn the main shaft pulley.
occurs.		→ If it is abnormally heavy, the main shaft mechanism is faulty.

	•	Does the main shaft motor rotate at all when the error occurs?
		→ If it does not rotate at all, check fuse F1, F2 and F3 on the power
		supply PCB in the control box. Refer to the block diagram
		showing the cable connections and check to see if connection from
		the main shaft motor to the drive PCB is proper.
	•	Manually turn the main shaft pulley in the encoder signal test mode
		and check to see if the stop position signal and encoder signal are
		proper.
		→ If either of the signals does not change, refer to the block diagram
		showing the cable connections and check to see if connection from
		the encoder and stop position sensor to the power supply PCB is
		proper.

BE-1204B-BC • BE-1204C-BC • BE-1206B-BC

BE-1204B-BC, BE-1204C-BC, BE-1206B-BC specifications

The Brother BE-1206B-BC and BE-1204B-BC are advanced embroidery machines designed for professional and commercial use, offering an exceptional blend of technology and user-friendly features. These machines cater to various embroidery needs, making them ideal for custom apparel, home decor, and promotional items.

One of the standout features of both models is their high-speed embroidery capability. The BE-1206B-BC operates at a maximum speed of 1,200 stitches per minute, allowing for efficient and rapid production. The BE-1204B-BC, while slightly slower at 1,000 stitches per minute, still maintains a competitive edge in terms of productivity. This high-speed operation ensures that users can complete large orders in a timely manner without sacrificing quality.

Both machines come equipped with a powerful computerized embroidery system that includes a user-friendly LCD touchscreen. This interface allows users to easily navigate through various settings, designs, and functions. With built-in fonts and a library of design options, users can customize their projects to meet specific requirements quickly. Additionally, the machines support USB connectivity, enabling users to easily import custom designs from a variety of sources, including computers and USB drives.

Precision is a hallmark of the Brother BE-1206B-BC and BE-1204B-BC. They feature advanced tension control and a patented needle threading system, ensuring consistent stitch quality across different fabric types. The machines also include a variety of presser feet and needle options, allowing for versatility in tackling various projects, from delicate materials to thicker fabrics.

Another significant characteristic of these machines is the automatic color change feature, which streamlines the embroidery process. Users can load multiple colors, and the machine will automatically switch between them as needed, reducing manual intervention and enhancing efficiency. The BE-1206B-BC boasts six needles, while the BE-1204B-BC has four, making it easier to handle multi-colored designs without interruption.

Durability and reliability are also important aspects of the Brother BE-1206B-BC and BE-1204B-BC. Constructed with high-quality materials, these machines are designed to withstand the rigors of industrial use. They also ensure minimal maintenance requirements, allowing operators to focus on their creative projects rather than machine upkeep.

In summary, the Brother BE-1206B-BC and BE-1204B-BC embroidery machines combine speed, precision, and ease of use, catering to businesses looking to enhance their embroidery capabilities. With a robust set of features and technologies, these machines represent an excellent investment for those looking to produce high-quality embroidered products efficiently.

Brother BE-1204B-BC, BE-1206B-BC, BE-1204C-BC instruction manual 12-5

Models: BE-1204B-BC BE-1204C-BC BE-1206B-BC

BE-1204B-BC • BE-1204C-BC • BE-1206B-BC

12-5

BE-1204B-BC, BE-1204C-BC, BE-1206B-BC specifications