Adjustment Of The Lower Thread Detection Sensor (Option); How To Wind The Lower Thread - Brother BAS-6150 Instruction Manual

8. Adjustment of the lower thread detection sensor (option)

The lower thread detection sensor detects the amount of remained threads through the light
amount emitted through the lens and reflected from the reflection panel on the bobbin shaft.
Proceed the following steps for maintenance.
1. Clean waste thread and dust around the lens weekly with an air with the slide panel
dismounted.
2. If dust does not come off from the lens using an air, wipe the lens with a dry and soft cloth.

8-1. How to wind the lower thread

Thread
Lower thread detection
sensor
1507S
1509S
BAS-6150
1506S
Lens
(Note) Be sure to wind the thread either right or left
end of the groove. Winding from the center
can not guarantee the precise detection of
remaining amount of threads.
Chapter 5 Adjustment
Reflection
panel
1508S
65