Upper Thread Mis-Trimming; Needle Strikes Upper Thread Trimmer - Brother HE-800A Service Manual
Electronic lockstitch button holer
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Also See for HE-800A:
- Manual del instrucción (122 pages) ,
- User manual (118 pages) ,
- Instruction manual (118 pages)
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5. TROUBLESHOOTING
5-15. Upper thread mis-trimming
Cause
Upper thread trimmer
assembly
Trimmer driving arm
5-16. Needle strikes upper thread trimmer
Cause
Upper thread trimmer
assembly
114
Check
Installation
position
upper
thread
trimmer
assembly
Upper
thread
trimmer
assembly holding force
Upper
thread
trimmer
cutting depth
Check
Installation
position
upper
thread
trimmer
assembly
upper
thread
trimmer
operating force
of
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
⋅ Upper
thread
adjustment
⋅ Upper thread trimmer cutting depth adjustment
Adjust so that the thread does not come out when
you cut it with scissors and hold the end of the
thread between your fingers and gently swing the
assembly.
⋅ Bend the scissors U or replace them so that the
correct force is applied.
⋅ Repair any damage from striking the needle.
Adjust the position of the trimmer driving arm roller.
of
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
⋅ Upper
thread
trimmer
adjustment
⋅ Upper thread trimmer cutting depth adjustment
Remove any scratches and burrs, and adjust the
upper thread trimmer M to open when the projection
is pressed with a force of 4N or less.
Remedy
trimmer
longitudinal
Cotton yarn #60
Holding force approx. 2N
Remedy
longitudinal
Page
position
91, 92
4005Q
-
4006Q
92
Page
position
91, 92
4005Q
-
4010Q
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