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11. ELECTRICAL MECHANISM
Z-8550A, 8560A
100
Problem No. 11
Error code is displayed while sewing machine is operating.
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
When [Err 710] is displayed while
sewing machine is operating:
Abnormal current detected in sewing
machine motor
(Replace the part(s) indicated at right.) Power supply P.C. board
Problem No. 12
Sewing machine does not stop correctly (needle down stop or needle up stop).
Cause Inspection/Remedy/Adjustment Replacement if a malfunction
1. Needle stop position for sewing
machine motor cannot be verified.
Try carrying out the procedures in “3-6.
Checking input and output”.
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2. Stop position for needle zigzag
motor cannot be verified
(If the needle zigzag stop position key is on,
stopping will be delayed when 3-step zigzags
are sewn.)
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