Singer Furura XL-550
31
Display
No
108
Mode 8: Adjusting the bobbin sensor sensitivity.
1. Prepare two thread wound bobbins.
Bobbin (A) should be wound with thread around 20 times and bobbin (B) should be wound with thread
around 10 times. Bobbin (B) is ideal for adjustment of bobbin thread sensor.
2. Place bobbin (A) into bobbin case and then press start button.
After starting the machine, check to see whether “00” will be displayed on LCD.
The situation of “00” means the sensitivity of the sensor is sp weak that the emitted light is cannot be
received.
3. Rotate trimmer either way to adjust sensitivity of the sensor while checking number displayed on LCD.
It is needed to be set very close to “01”, but not to “01” range. “00” should be displayed on LCD. This set-
ting will not stop the machine with bobbin A.
4. Then replace bobbin (A) with bobbin (B).
5. Start the machine with bobbin (B) and check to see whether “01” will be displayed on LCD. If “00” or
“02” is displayed, go back to step (2) and readjust with bobbin (A).
6. The situation of “02” means the sensitivity of the sensor is so strong that the sensor will receive any
lights as a signal. So the machine will stop with bobbin (A) at the situation of “02”.
Error code list
Error
06
Feed stepmotor
09
ZigZag Step motor
16
Cutter step motor
