Brother S-7000DD Instruction Manual page 46

8. TROUBLESHOOTING
Problem
13 Broken needles
14 Machine does not operate
when power is turned on
and treadle is pressed.
15 Machine does not operate
at high speed.
16 Nothing appears on the
operation panel display.
37
・ 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.
Adjust the clearance between the needle and the tip of the
rotary hook.
・ Is the needle timing too advanced with respect to the feed dog?
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
regulations.
0469M
・ Is the power supply connector disconnected from the control box?
Insert the connector securely.
・ Is the sewing speed setting or backtack stitch speed setting too
slow?
Set the maximum sewing speed to a higher speed.
・ Is the power supply connector disconnected from the control box?
Insert the connector securely.
・ Is the operation panel connector at the control box disconnected?
Insert the connector securely.
Possible cause
S-7000DD
Page
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