Brother BES-962BC Mechanical Section, Check these points once again Problem Check Point

Chapter 12 Troubleshooting

Mechanical Section

Check these points once again

Problem		Check Point
Thread breakage	•	Is the machine properly threaded?
	•	Is thread tension too high?
	•	Is the rotary hook assembly clogged?
	•	Is there thread in the bobbin?
	•	Is the needle bent?
	•	Is there a rough edge or flaw on the needle plate, rotary hook, or
		bobbin case that might cut the thread?
	•	Is the needle installed correctly (direction, angle, etc.)
	•	Is the presser foot in contact with the material?
	•	Are the thread thickness and needle size correct?
	•	Is a thread with right-hand twist being used? (If such a thread is
		used, replace with a thread with left-hand twist.)
	•	Is there any adhesive on the needle?
	•	Is the material tension too weak?
	•	Is there too much play between the outer rotary hook and inner
		rotary hook?
	•	Does the outer rotary hook turn smoothly?
	•	Is the clearance between the rotary hook stopper and the rotary
		hook adjusted correctly?
	•	Does the thread come out from the bobbin case smoothly?
Needle (presser foot) interference	•	Is the embroidery hoop too small?
with embroidery hoop	•	Check the size and needle start position in the sewing data.
Needle breakage	•	Is the needle attached correctly (direction, height, etc.)?
	•	Is the needle bent?
	•	Is the rotary hook attached correctly?
	•	Is the timing set correctly?
	•	Is there any backlash with the needle bar case (back/forth and
		right/left)?
	•	Is the rotary hook stopper correctly attached to stop the rotary
		hook?
	•	Is the needle size correct and the tip sharp?
	•	Does the thread pass through the hole center of the presser
		foot?
Not embroidered properly	•	Is the material edge caught in the machine?
		(Are embroidery hoop and other related parts operating
		correctly?)
	•	Is the material stretched properly?
	•	Is thread tension proper?
		Does the lower thread come out smoothly?
Machine operation abnormal	•	Is any set screw of the rotary encoder loosened?
	•	Is any set screw of the machine pulley loosened?
	•	Is any set screw of the machine motor pulley loosened?
	•	Is embroidery data normal?
	•	Is the XY carriage belt loosened?

252 BES-962BC • BES-1262BC