158
APPENDIX
— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Troubleshooting
If the machine stops operating correctly, check the following possible problems before requesting service.
If the problem persists, contact your authorized retailer.
Symptom
Probable Cause
Remedy
Reference
The sewing
machine does not
operate.
The machine is not turned on.
Turn on the machine.
page 17
The start/stop button was not
pressed.
Press the start/stop button.
page 51
The presser foot lever is raised.
Lower the presser foot lever.
page 50
The start/stop button was pressed,
even though the foot controller is
connected.
Do not use the start/stop button when
the foot controller is connected. To
use the start/stop button, disconnect
the foot controller.
page 51
The bobbin winder shaft is on the
right side after winding the
bobbin.
Slide the bobbin winder shaft to the
left.
page 26
The needle breaks.
The needle is incorrectly installed. Correctly install the needle.
page 41
The needle clamp screw is loose.
Use the screwdriver to firmly tighten
the screw.
The needle is bent or blunt.
Replace the needle.
The combination of fabric, thread
and needle is not correct.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
page 39
The presser foot that is used is not
appropriate for the type of stitch
that you wish to sew.
Attach the presser foot that is
appropriate for the type of stitch that
you wish to sew.
page 70
The upper thread tension is too
tight.
Loosen the upper thread tension.
page 59
The fabric is pulled too much.
Lightly guide the fabric.
-
The spool is incorrectly installed.
Correctly install the spool.
page 31
The area around the hole in the
needle plate is scratched, or has a
burr on it.
Replace the needle plate. Contact
your authorized retailer.
-
The area around the hole in the
presser foot is scratched, or has a
burr on it.
Replace the presser foot. Contact
your authorized retailer.
-
The bobbin case is scratched, or
has a burr on it.
Replace the bobbin case. Contact
your authorized retailer.
-
A bobbin designed specifically for
this machine is not used.
Incorrect bobbins will not work
properly. Only use a bobbin
designed specifically for this
machine.
page 22
The needle breaks.
The upper thread was not
threaded correctly.
Correct the upper threading.
page 32
0711-0120-C-combo_E.book Page 158 Tuesday, August 26, 2008 2:43 PM
Summary of Contents for A-LINES Sofia BL137A
Page 1: ......
Page 16: ...14...
Page 70: ...SEWING BASICS 68...
Page 156: ...154 EMBROIDERY...
Page 174: ......
Page 175: ......