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Elna eXcellence 780 Manual

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103
Troubleshooting
Condition Cause Reference
The needle thread
breaks
1. The needle thread is not threaded properly.
2.
T
he needle thread tension is too tight.
3. The needle is bent or blunt.
4.
T
he needle is incorrectly inserted.
5. The needle thread is not set under the presser foot when start sewing.
6. The fabric is moved too fast when stitching free motion quilting.
7. The thread is tangled around the spool.
Page 17
Page 38
Change the needle.
Page 20
Page 30
Page 92
Use the spool holder.
The bobbin thread
breaks
1. The bobbin thread is not threaded properly in the bobbin holder.
2. Lint has collected in the bobbin holder.
3.
T
he bobbin is damaged and does not turn smoothly.
Page 16
Page 101
Change the bobbin.
The needle breaks 1. The needle is incorrectly inserted.
2.
T
he needle is bent.
3.
T
he needle clamp screw is loose.
4.
T
he needle is too ne for the fabric being used.
5.
An inappropriate presser foot is used.
Page 20
Change the needle.
Page 20
Page 20
Use the correct foot.
Skipped stitches 1.
T
he needle is incorrectly inserted, bent or blunt.
2.
The needle and/or threads are not suitable for the work being sewn.
3.
A b
lue tip needle is not being used for sewing stretch, very ne fabrics
and synthetics.
4.
T
he needle thread is not threaded properly.
5.
A p
oor quality needle is used.
6.
A purple tip needle is not being used for sewing thick fabrics, denims
and across the hem.
Page 20
Page 20
Use the stretch stitch
needle.
Page 17
Change the needle.
Page 20
Seam puckering 1.
T
he needle thread tension is too tight.
2.
T
he needle thread is not threaded properly.
3.
T
he needle is too heavy for the fabric being sewn.
4.
T
he stitch length is too long for the fabric.
5.
T
he foot pressure is not adjusted properly.
6.
A s
tabilizer is not used when sewing very ne fabrics.
Page 38
Page 17
Page 20
Make stitch shorter.
Page 38
Apply a stabilizer.
The fabric is not
feeding smoothly
1.
T
he feed dog is packed with lint.
2.
T
he stitches are too ne.
3.
T
he feed dog is not raised after ”drop feed” sewing.
Page 101
Make stitch longer.
Page 25
Loops on the seams 1.
T
he needle thread tension is too loose.
2.
T
he needle is too thick or too ne for the fabric.
Page 38
Page 20
The machine does
not run
1.
T
he machine is not plugged in.
2.
T
hread has been caught in the hook race.
3.
T
he start/stop button is used for ordinary sewing with the foot control
plugged in.
Page 9
Page 101
Page 9
Buttonhole sewing
is not sewn properly
1.
T
he stitch density is not suitable for the fabric being sewn.
2.
T
he interfacing has not been used for the stretch or synthetic fabric.
3.
T
he buttonhole lever is not lowered.
Page 46
Apply an interfacing.
Page 44
The machine is
noisy
1.
T
hread has been caught in the hook race.
2.
L
int has built up in the hook race or bobbin holder.
Page 101
Page 101
Auto thread cutting
failed
1. Thread is too thick for the auto thread cutting.
2.
T
hreads have been caught in the thread cutter mechanism.
Page 12
Page 101
Pattern selection
keys are grayed out.
1. The needle plate for straight stitch or the professional grade needle
plate is attached to the machine.
2.
D
ual feed key is on.
3.
T
win needle key is on.
Page 24
Page 33
Page 65
Pattern selection
keys do not work
1.
T
he key position is out of alignment. Page 95
The needle thread
appears on the
wrong side of the
fabric when the
stitch width value
is larger than “7.0”.
1.
T
hread tension is not balanced. Page 38
It is not abnormal for a faint humming sound to be heard from the internal motors.
The LCD screen and function key area may become warm after several hours of continuous use.
… 105 …


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  • my elna 780+ automatic needle threader won't thread Submitted on 13-4-2022 at 21:58

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