Troubleshooting - ELNA eXcellence 720 Instruction Manual

Troubleshooting

Condition Cause
Needle thread 1. The needle is not threaded properly.
breaks 2. The needle thread tension is too tight.
3. The needle is bent or blunt.
4. The needle is not inserted correctly.
5. The needle thread and bobbin thread are not properly under (drawn to
6. The fabric is not moved to the back when sewing is finished.
7. The thread is either too heavy or too fine for the needle.
8. The thread is tangled around spool.
Bobbin thread 1. The bobbin thread is not threaded correctly in the bobbin case.
breaks 2. Lint has collected in the bobbin case.
3. The bobbin is damaged and does not turn smoothly.
Needle breaks 1. The needle is not inserted correctly.
2. The needle is bent or blunt.
3. The needle clamp screw is loose.
4. The needle thread tension is too tight.
5. The fabric is not moved to the back when sewing is finished.
6. The needle is too fine for the fabric being sewn.
7. The wrong presser foot is used.
Skipped stitches 1. The needle is not inserted correctly.
2. The needle is bent or blunt.
3. The needle and/or the thread are not suitable for the fabric being sewn.
4. A stretch needle is not being used for sewing stretch, very fine and
5. The needle thread is not threaded properly.
6. The foot pressure dial is not adjusted correctly.
7. The wrong needle is being used.
Seam puckering 1. The needle thread tension is too tight.
2. The machine is not threaded correctly.
3. The needle is too large for the fabric being sewn.
4. The stitch length is too long for the fabric.
5. The foot pressure dial is not adjusted correctly.
Place lightweight stabilizer under lightweight fabrics.
Slipping fabric 1. The foot pressure dial is not adjusted correctly.
2. The correct presser foot is not being used.
Fabric does not 1. The feed dog is packed with lint.
feed smoothly 2. The pressure foot dial is not adjusted correctly.
3. The stitches are too short.
4. The feed dog was not raised after being lowered.
5. The correct presser foot is not being used.
Gathering 1. The needle thread tension is too tight.
2. The needle is either too large or too small for the thread.
3. The stitches are too long for fabric weight.
Machine does not 1. The machine is not plugged in.
work 2. A thread is caught in the hook area or auto thread cut mechanism.
3. Presser foot is in up position.
Stitches are 1. The fine adjustment screw is not adjusted properly.
distorted 2. The correct presser foot is not being used.
3. The needle thread tension is too tight.
4. The stitch length is not suitable for the fabric being sewn.
5. Use interfacing/stabilizer for fine or stretch fabrics.
Sensor 1. The stitch length is not suitable for the fabric being sewn.
buttonholes do 2. Interfacing is not being used with fabrics.
not work 3. There is a gap between the slider and spring holder.
4. Buttonhole lever is not pulled down.
Noisy operation 1. Threads have been caught in the hook area.
2. Lint has built up in the bobbin case or hook area.
Fabric layers shift 1. The pressure foot dial is not adjusted correctly.
2. The correct presser foot is not being used.
Auto thread cut 1. Presser foot was raised before auto thread cutting was completed.
LED blinks 2. Threads are tangled in the auto thread cutting mechanism.
You may hear a faint humming sound coming from your machine's internal motors. This is
normal and no cause for concern.
the back of) the presser foot when starting to sew.
synthetic fabrics.
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See page(s)
52-56
38
44
42
58
60
42
46
50
166-168
change bobbin
44
44
44
38
60
44
30
44
44
44
42
52-56
26
42
38
50-56
44
18
26
26
30
166-168
26
18
28
30
38
44
18
14
166-168
Lower the foot
40
30
38
18
Use the stabilizer
18
84
92
86
166-168
166-168
26
30
62
166-168