HE-800A
5. TROUBLESHOOTING
117
Cause Check Remedy Page
Nut Check if the nut is loose, and tighten it securely. -Solenoid stopper
Cutter sensor position
⋅ Adjust the cutter sensor position.
⋅ Check if the mounting screws are loose, and
tighten them securely.
86
Cutter bar guide
Smoothness of cutter
operation
Adjust the cutter bar guide so that the cutter
operates smoothly with no play.
61
5-19. Cutter does not return
Cause Check Remedy Page
Cutter Cutter blade If blade is worn or chipped, sharpen it or replace it. -
Sticks in material Needle plate Replace with the special needle plate (optional).
Instruction
manual
Cutter bar guide
Smoothness of cutter
operation
Adjust the cutter bar guide so that the cutter
operates smoothly with no play.
61
5-20. Cutter and upper thread scissors touch
Cause Check Remedy Page
Upper thread
scissors
Check if the cam opens
the stop plate.
Adjust the cam position.
* If the feed mechanism operates when the cam has
not opened the stop plate, the cutter will bump
against the upper thread
scissors.
95
5-21. Seam is cut
Cause Check Remedy Page
Length of knife
setting
Length of knife
Set parameter number 02 to the same value as the
length of the knife being used.
Instruction
manual
Knife space setting Cutting of zigzag seam
⋅ Use parameter number 06 to set the knife X
space.
⋅ Use parameter number 08 to set the knife X
position alignment.
Instruction
manual
Cutter play Adjust the cutter bar guide so that the cutter
operates smoothly with no play.
61
Cutter
Cutter knife bending Use the cutter holder (option) to prevent the cutter
knife from becoming bent.
88
Cutter sensor
4017Q
4.5 ± 0.5 mm
4019Q
4018Q
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