Pfaff synchrotronic 1229 Owner's Manual - Page 31
Machine, feeds, irregularly, not at, Electronic, bobbin, thread, monitor, properly, Sewing, lights,
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Cause: Remedy: 5. Machine feeds irregularly or not at all Lint has accumulated between tooth rows of feed dog. Feed dog dropped. (Lever 17 is at left.) Remove needle plate and clean out lint. Flick lever 17 to the right. 6. Machine runs with difficulty Thread ends in hook raceway. Remove thread ends and put a drop of oil into hook raceway. 7. Electronic bobbin thread monitor does not work properly Thread ends and lint have accumulated on the photo-electronic eye in the free arm cover, in the bobbin case and in and around the sewing hook. Remove thread ends and dirt. 8. Sewing lamp lights up, but machine is not running Fuse is faulty. Replace fuse. 9. Safety and electronic system Machine does not start running. Yellow indicator remains on even during sewing. Red indicator light remains on, but does not flash. When winding through needle eye the needle makes a stitch first, Switch master switch off and on again. Switch master switch off and on again. Switch master switch off and on again. Do not start winding until yellow indicator light lights up after presser bar lifter has been raised. 10. Machine skips stitches in overlock seam Overlock-stitch attachment fitted loosely, Seam does not look neat. Secure attachment in position by tightening screw L securely (page 20). Check thread tensions. 11. Fundamental rules During sewing never operate the Stopmatic control. Never run a threaded machine unless there is a piece of fabric under the sewing foot. If you have to leave the machine, even for a short while, be sure to switch off the master switch. This is particularly important when children are around. 2