Pfaff synchrotronic 1229 Instruction Book page 31

Cause:
Remedy:
5. Machine feeds irregularly or not at all
Lint has accumulated between tooth
Remove needle plate and clean out lint.
rows of feed dog.
Feed dog dropped. (Lever 17 is at left.)
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
Remove thread ends and dirt.
on the photo-electronic eye in the free
arm cover, in the bobbin case and in and
around the sewing hook.
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. Switch master switch off and on again.
Yellow indicator remains on even during
Switch master switch off and on again.
sewing.
Red indicator light remains on, but does
Switch master switch off and on again.
not flash.
When winding through needle eye the Do not start winding until yellow
needle makes a stitch first, indicator light lights up after presser bar
lifter has been raised.
10. Machine skips stitches in overlock seam
Overlock-stitch attachment fitted
Secure attachment in position by
loosely, tightening screw L securely (page 20).
Seam does not look neat.
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.
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