Brother International SE-400 Users Manual - English - Page 155

Otherwise, the upper thread may become

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Use the cleaning brush or a vacuum cleaner to g remove any lint and dust from the race and bobbin thread sensor and their surrounding area. Insert the tabs on the needle plate cover into i the needle plate, and then slide the cover back on. a c b a Cleaning brush b Race c Bobbin thread sensor Note z Do not apply oil to the bobbin case. z If lint or dust collects on the bobbin thread sensor, the sensor may not operate correctly. Insert the bobbin case so that the projection h on the bobbin case aligns with the spring. a a Needle plate cover CAUTION ● Never use a bobbin case that is scratched. Otherwise, the upper thread may become tangled, the needle may break or sewing performance may suffer. For a new bobbin case (part code: XC3152-221 (green marking)), contact your nearest authorized service center. ● Be sure that the bobbin case is correctly installed, otherwise the needle may break. a 5 b c c b a Bobbin case b Projection c Spring Memo z Move the bobbin case right and left to make sure that the right side of the projection touches the spring and there is a space on the left side of the projection. Care and Maintenance 153

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Care and Maintenance
153
5
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g
Use the cleaning brush or a vacuum cleaner to
remove any lint and dust from the race and
bobbin thread sensor and their surrounding
area.
a
Cleaning brush
b
Race
c
Bobbin thread sensor
Note
Do not apply oil to the bobbin case.
If lint or dust collects on the bobbin thread
sensor, the sensor may not operate correctly.
h
Insert the bobbin case so that the projection
on the bobbin case aligns with the spring.
a
Bobbin case
b
Projection
c
Spring
Memo
Move the bobbin case right and left to make
sure that the right side of the projection
touches the spring and there is a space on
the left side of the projection.
i
Insert the tabs on the needle plate cover into
the needle plate, and then slide the cover back
on.
a
Needle plate cover
CAUTION
a
b
c
a
b
c
b
c
●
Never use a bobbin case that is scratched.
Otherwise, the upper thread may become
tangled, the needle may break or sewing
performance may suffer. For a new
bobbin case (part code: XC3152-221
(green marking)), contact your nearest
authorized service center.
●
Be sure that the bobbin case is correctly
installed, otherwise the needle may break.
a