The LCD screen is
not clear
- The screen sharpness needs to be adjusted.
10
Stitches are skipped
- The needle is not inserted correctly, bent or blunt.
- The machine has not been threaded correctly.
- The needle or thread size does not match the fabric used.
- Use a stretch needle to sew stretch fabrics.
- The pression of the presser foot is not high enough for the fabric
used.
14
19
16
16
13
The needle breakes
- The needle is not inserted correctly, bent or blunt.
- The needle clamp screw is loose.
- The top thread tension is too high.
- The needle is too thin for the fabric used.
14
14
25
16
NM 2830 e - 49 -
The thread breakes
- The machine has not been threaded correctly.
- The top thread tension is too high.
- The needle is not inserted correctly, bent or blunt.
- The threads were not held at the beginning of the seam.
- The thread size does not match the needle size.
- Clean the hook race.
- The bobbin is broken and has to be replaced.
19
25
14
22
16
48
The seam puckers
- The top thread tension is too high.
- The machine has not been threaded correctly.
- The needle is too large for the fabric used.
- The stitches are too big for the fabric used.
- The pression of the presser foot does not match the fabric
used.
25
19
16
13
The fabric is not fed
regularly
- There is lint or dust between the teeth of the feed dogs.
- The pression of the presser foot is not high enough for the fabric
used.
- The stitches are too big.
- The feed dogs have been lowered and not raised again.
48
13
13
The machine does
not work
- The plug has not been inserted into the socket.
- The thread has become entangled in the hook race.
- The bobbin winder is in the position to wind the bobbin.
8
48
17
The stitch patterns
are irregular
- The stitch pattern has to be adjusted to the fabric.
26
Problem
Possible causes
Page
TROUBLE-SHOOTING
The buttonhole
stitches are irregular
- The density of the rows of the buttonhole does not match the
fabric used.
- An interfacing is needed for stretch fabrics.
- The fabric was pulled.
Never pull the fabric, but let the feed dogs guide the fabric.
32
30
22
The message "STOP
FOR SAFETY
PURPOSES"scrolls
over the screen
- The sewing machine is overloaded. Stop sewing until the message
disappears again.
- The hook race is not clean
- The fabric used is too heavy.
47
48
NM2830e 29/3/07 12:05 PM Page 49