Brother International SB3150 Operation Manual - Page 138
Operation beep, Nothing appears in the LCD
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Troubleshooting Operation beep Each time a key is pressed you will hear one beep. If an incorrect operation is performed you will hear two or four beeps. ■ If a key is pressed (correct operation) One beep sounds. ■ If an incorrect operation is performed Two or four beeps sound. ■ If the machine locks up, for example, because the thread is tangled The machine beeps for four seconds and the machine automatically stops. Be sure to check for the cause of the error and correct it before continuing to sew. ■ Canceling the operation beep Select a "OFF". (Buzzer) in the settings screen and set it to Nothing appears in the LCD If nothing appears in the LCD when the machine is turned on, the brightness of the LCD is either too light or too dark. If this is the case, perform the following operation. Turn off the machine. a While pressing (Reinforcement stitch button) on b the operation panel, turn on the sewing machine. Press the "-" or "+" key. c Adjust the brightness of the LCD so that the screens can be seen. Turn off the machine, then turn it on again. d A-20