Brother S-7000DD manual 46

8. TROUBLESHOOTING

	Problem				Possible cause	Page
13	Broken needles	・ Is the material being pushed or pulled with excessive force during
			sewing?
		・ Is the needle properly installed?
				If it is incorrect, install the needle correctly.
		・ Is the needle bent, is the needle tip broken, or is the needle hole
			blocked?
				Replace the needle.
		・ Is the needle and rotary hook timing correct?
				Adjust the height of the needle bar.		31*
				Adjust the clearance between the needle and the tip of the		32*
				rotary hook.
		・ Is the needle timing too advanced with respect to the feed dog?				31*
				Retard the needle timing.
				Caution
			・ It is extremely dangerous to leave any pieces of broken
				needle sticking in the material. If the needle breaks, search
				for all pieces until the whole of the needle is found again.
			・ Furthermore, we recommend that through steps be taken to
				account for such needles to comply with product liability
	0469M			regulations.
14	Machine does not operate	・ Is the power supply connector disconnected from the control box?				7～11
	when power is turned on			Insert the connector securely.
	and treadle is pressed.
15	Machine does not operate	・ Is the sewing speed setting or backtack stitch speed setting too
	at high speed.		slow?			16*
				Set the maximum sewing speed to a higher speed.
16	Nothing appears on the	・ Is the power supply connector disconnected from the control box?				7～11
	operation panel display.			Insert the connector securely.
		・ Is the operation panel connector at the control box disconnected?				7*
				Insert the connector securely.

37 S-7000DD