Brother International Innov-is NQ550PRW Operation Manual - Page 117

Troubleshooting List of symptoms ■ Getting ready Symptom Probable Cause Remedy Reference Cannot thread the needle. Needle is not in the correct position. Needle is installed incorrectly. Press the "Needle position" button to raise the B-4 needle. Reinstall the needle correctly. B-27 Needle is turned, bent or the point is dull. Replace the needle. B-27 Upper threading is incorrect. Check the steps for threading the machine and B-19 rethread the machine. The needle threader hook is bent and does not Contact your authorized Brother dealer or the - pass through the eye of the needle. nearest Brother authorized service center. The needle threader lever cannot be moved or Contact your authorized Brother dealer or the - returned to its original position. nearest Brother authorized service center. A size 65/9 needle is being used. The needle is incompatible with the needle threader. Manually pass the thread through the eye of the needle. B-22 Bobbin thread does not wind neatly on the bobbin. The thread is not passed through the bobbin winding thread guide correctly. Bobbin spins slowly. Correctly pass the thread through the bobbin winding thread guide. Move the sewing speed controller to the right so that the speed will be increased. B-13 B-13 The thread that was pulled out was not wound Wind the thread that was pulled off around the B-13 onto the bobbin correctly. bobbin 5 or 6 times clockwise. The empty bobbin was not set on the pin properly. Set the empty bobbin on the pin and slowly turn B-13 the bobbin until you hear it click in place. While winding the bobbin, the bobbin thread was wound below the bobbin winder seat. You have not wound the bobbin thread properly. While initially winding thread on the bobbin the bobbin thread is not properly inserted into the guides. After removing the thread wound below the bobbin winder seat, wind the bobbin correctly. Follow the drawn images on the top of the machine for guidance when threading the machine for bobbin winding. B-13, A-11 The bobbin thread cannot be pulled up. Needle is turned, bent or the point is dull. Bobbin is set incorrectly. Replace the needle. Reset the bobbin correctly. B-27 B-16 Nothing appears in the LCD. Main power switch is not turned on. The plug of the power cord is not inserted into an electrical outlet. The LCD screen is Condensation has formed on the LCD screen. fogged up. Turn the main power to ON. Insert the plug of the power cord into an electrical outlet. After a while, the cloudiness will disappear. B-10 B-10 - The operation keys do not respond. A glove is worn when the keys are pressed. The keys are pressed with a fingernail. A non-electrostatic touch pen is being used. The operation keys do not respond, or the sensitivity is too strong. The sensitivity of the operation keys is not set for the user. The sewing light The sewing light is damaged. does not come on. Directly touch the operation keys with your B-5 finger. When using a commercially available touch pen, make sure that it is compatible with capacitive sensing. Adjust the sensitivity of the operation keys. B-12 Contact your authorized Brother dealer or the - nearest Brother authorized service center. MAINTENANCE AND TROUBLESHOOTING A Appendix A-15