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HE-800A
16. TROUBLESHOOTING
104
Cause Check Remedy Page
Needle plate position
Adjust the forward/back position of the needle plate
so that the needle is in the center of the needle
hole.
-
Needle plate
Burr on the screw hole
edge (in event of uneven
material feeding)
Polish with buff.
-
Upper thread
trimmer assembly
Needle strikes upper
thread trimmer
Refer to “16-16. Needle strikes upper thread
trimmer”.
102, 103
Cutter Clearance between
needle bar and cutter
Install the cutter so that the clearance between the
needle bar and the cutter is 0.3 mm.
* The cutter release section of the needle bar
should be at a right angle to the cutter.
74
ውዒ
-
ውዔ
. Imperfect cutter function (imperfect material cutting)
Cause Check Remedy Page
Installation position of
cutter
Install the cutter so that its edge is aligned with the
top of the needle plate.
74
Cutter blade
If blade is worn or chipped, sharpen it or replace it.
Replace with the special needle plate (optional).
4
Cutter
Damage to cutter
mechanism parts
Loose screws
Replace any parts that are damaged.
Tighten any loose screws.
-
Cutter solenoid Check for a disconnected
cord.
Connect the cords.
-
Cutter power Memory switches If the material is heavy and difficult to cut, use
memory switch No. 00 to increase the cutting force
of the cutter.
79
4015Q
Bisect
4014Q
4016Q
0.3 mm
(Needle plate cross section)
Check the chamfered side
finishing