Brother HE-800A ￿￿-￿￿.Upper thread mis-trimming, ￿￿-￿￿.Needle strikes upper thread trimmer

￿							16. TROUBLESHOOTING
￿
￿￿-￿￿. Upper thread mis-trimming
	Cause		Check				Remedy	Page
Upper	thread	Installation		position		of	Adjust the installation position of upper thread
trimmer assembly		upper	thread		trimmer		trimmer assembly by moving the setting plate
		assembly					assembly.
							￿Upper thread trimmer longitudinal position
							adjustment
							￿Upper thread trimmer cutting depth adjustment	Service
								manual
							4005Q
		Upper	thread		trimmer		Adjust so that the thread does not come out when
		assembly holding force					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
							4006Q
Trimmer driving arm		Upper	thread		trimmer		Adjust the position of the trimmer driving arm roller.	Service
		cutting depth						manual
￿￿-￿￿. Needle strikes upper thread trimmer
	Cause		Check				Remedy	Page
Upper	thread	Installation		position		of	Adjust the installation position of upper thread
trimmer assembly		upper	thread		trimmer		trimmer assembly by moving the setting plate
		assembly					assembly.
							￿Upper thread trimmer longitudinal position
							adjustment
							￿Upper thread trimmer cutting depth adjustment	Service
								manual
							4005Q
		upper	thread		trimmer		Remove any scratches and burrs, and adjust the
		operating force					upper thread trimmer M to open when the projection
							is pressed with a force of 4N or less.
								-
							4010Q

HE-800A 102