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Error code
Symbol
9723
9725
9726
9727
9728
9730
9800
9810
9900
9901
9902
9911
9920
9921
9999
350
Meaning
Fluff at the flap beginning
• Flap angle too great
• Flap too small
• Flap too large
• Reflecting foil dirty/damaged
Stop section insufficient for the
flap angle
Flap too small
Corner knife cut impossible
Middle knife not ready for use
Outfeed roller not ready for use
Defective machine parameters
(Checksum error)
Defective pocket sequence
(checksum error)
Defective pocket programs
(Checksum error)
Serial number active
Serial number not accepted
Machine configuration has been
changed
Operating Instructions 755 B, 756 B/F - 00.0 - 02/2021
Troubleshooting
Remedial action
• Insert flaps with smooth edges
• Check reflecting foil
• Check flap angle
• Check alignment of the light
barriers
• Adjust sewing parameters
(seam securement possibly too
long for small flaps)
• Check flap size
• Check reflecting foil
Reduce the insertion speed
p. 163
Check the flap size; insert a larger
flap
• Increase seam length
• Change positioning point
Check cable
Check cable
• Initialize machine parameters
again
• Initialize pocket sequences again
• Initialize pocket programs again
• Switch Off
Re-enter serial number
Switch off and on the machine again
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