Brother International HE-800A Instruction Manual - English - Page 112

Imperfect cutter function imperfect material cutting

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

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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
１６
-
１８
. 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