Brother International DZ3400 Operation Manual - Page 107
List of symptoms
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List of symptoms ■ Before sewing Symptom Possible cause How to put it right Reference The needle threader can not be used. (For models equipped with the needle threader lever.) You have not moved the needle holder to its highest position. The needle is incorrectly installed. Raise the needle either by turning the handwheel toward you (counterclockwise) so that the mark on the wheel points up or by pressing (needle position button) once or twice. Correctly install the needle. page 25 page 32 The sewing light does not come on. The machine is not turned on. Turn on the machine. page 14 The thread is not passed through the bobbin-winding thread guide correctly. Correctly pass the thread through the bobbin-winding thread guide. page 19 Bobbin thread Bobbin spins slowly. (for models Move the sewing speed controller to does not wind equipped with the sewing speed neatly on the bob- controller.) the right (so that the speed will be fast). page 21 4 bin. The thread that was pulled out was not wound onto the bobbin correctly. (For models equipped with the fast bobbin winding system.) Wind the thread that was pulled off round the bobbin five or six times clockwise. page 20 The thread does not pass through the eye of the nee- You have not moved the needle dle. (For models holder to its highest position. equipped with the needle threader lever.) The needle is incorrectly installed. Raise the needle either by turning the handwheel toward you (counterclockwise) so that the mark on the wheel points up or by pressing (needle position button) once or twice. Correctly install the needle. page 25 page 32 The needle threader lever does not lower to the correct position. (For models equipped with the needle threader lever.) The needle has not been raised to the correct position. Press the needle position button. page 25 While winding the bobbin, the bobbin thread was You have not wound the bobbin wound below the thread properly. bobbin winder seat. After removing the thread wound below the bobbin winder seat, wind the bobbin correctly. page 17 105