Brother International HE-800A Instruction Manual - English - Page 110

Upper thread mis-trimming, Needle strikes upper thread trimmer

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16. TROUBLESHOOTING Upper thread mis-trimming Cause Upper thread trimmer assembly Check Installation position of upper thread trimmer assembly Remedy Adjust the installation position of upper thread trimmer assembly by moving the setting plate assembly. ࡮ Upper thread trimmer longitudinal position adjustment ࡮Upper thread trimmer cutting depth adjustment Page Service manual Upper thread trimmer assembly holding force 4005Q 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. Cotton yarn #60 - Holding force approx. 2N Trimmer driving arm Upper thread cutting depth 4006Q trimmer Adjust the position of the trimmer driving arm roller. Service manual Needle strikes upper thread trimmer Cause Upper thread trimmer assembly Check Installation position of upper thread trimmer assembly Remedy Adjust the installation position of upper thread trimmer assembly by moving the setting plate assembly. ࡮ Upper thread trimmer longitudinal position adjustment ࡮Upper thread trimmer cutting depth adjustment Page Service manual upper thread operating force 4005Q trimmer 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. - HE-800A 4010Q 102

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HE-800A
16. TROUBLESHOOTING
102
１６
-
１５
. Upper thread mis-trimming
Cause
Check
Remedy
Page
Installation
position
of
upper
thread
trimmer
assembly
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
Upper
thread
trimmer
longitudinal
position
adjustment
Upper thread trimmer cutting depth adjustment
Service
manual
Upper thread trimmer
assembly
Upper
thread
trimmer
assembly holding force
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.
-
Trimmer driving arm
Upper
thread
trimmer
cutting depth
Adjust the position of the trimmer driving arm roller.
Service
manual
１６
-
１６
. Needle strikes upper thread trimmer
Cause
Check
Remedy
Page
Installation
position
of
upper
thread
trimmer
assembly
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
Upper
thread
trimmer
longitudinal
position
adjustment
Upper thread trimmer cutting depth adjustment
Service
manual
Upper thread trimmer
assembly
upper
thread
trimmer
operating force
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.
-
4006Q
4005Q
Cotton yarn #60
Holding force approx. 2N
4005Q
4010Q