Brother NQ3600D Operation Manual page 185

■ If there is a screw in the needle plate cover
1 Use the L-shaped (or disc-shaped) screwdriver to
remove the screw in the needle plate cover.
2 Grasp both sides of the needle plate cover, and then
slide it toward you.
1 Needle plate cover
■ If there is no screw in the needle plate cover
1 Grasp both sides of the needle plate cover, and then
slide it toward you.
1 Needle plate cover
g Remove the bobbin case.
Grasp the bobbin case, and then pull it out.
1
1 Bobbin case
a
a
h Use the cleaning brush or a vacuum cleaner to remove
any lint and dust from the race and bobbin thread
sensor and the surrounding area.
1 Cleaning brush
2 Race
3 Bobbin thread sensor
• Do not apply oil to the
Insert the bobbin case so that the  mark on the
i
bobbin case aligns with the

• Align the  and
marks.
1  mark

2
mark
3 Bobbin case
• Make sure that the indicated points are aligned
before installing the bobbin case.
Care and Maintenance
.
bobbin case

mark on the machine.
a
b
a b
Appendix A-3
A