Brother International PE770 Users Manual - English - Page 73

Use the cleaning brush or a vacuum cleaner to f 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 h the needle plate, and then slide the cover back on. a c b a Needle plate cover a CAUTION a Cleaning brush b Race c Bobbin thread sensor • Do not apply oil to the bobbin case. ● Never use a bobbin case that is scratched, otherwise the upper thread may become 3 tangled, the needle may break or embroidering performance may suffer. For a new bobbin case (part code: XD1855- Note ! If lint or dust collects on the bobbin thread sensor, the sensor may not operate correctly. 251), contact your nearest authorized service center. ● Be sure that the bobbin case is correctly installed, otherwise the needle may break. Insert the bobbin case so that the projection g on the bobbin case aligns with the spring. a b 2 1 a Projection b Spring 1 a Bobbin case Care and Maintenance 71