Troubleshooting - AEG 110 User Manual

Troubleshooting

Trouble
1. Improper top threading.
Top thread
2. Excessively tight top tension.
broken
3. Blunt or bend needle.
4. Improper fixing of needle.
5. At start of sewing, top thread and bottom thread are not
correctly fixed beneath the presser.
6. At end of sewing, the yarn is not threaded to back.
7. Excessively thick or too thin thread relatively to the needle.
Breaking of
1. The yarn of bobbin is not correctly threaded into bobbin
bobbin thread
case holder.
2. Cotton flock collected on bobbin case holder.
3. The bobbin is damaged and impossible to smoothly rotate.
Needle
1.Improper fixing of needle.
broken
2. Blunt or bend needle.
3. Loosing of needle set screw.
4. Excessively tight top tension.
5. At end of sewing, the yarn is not threaded to back.
6. Too thin needle.
1.Improper fixing of needle.
Skipping
stitch
2. Blunt or bend needle.
3. The needle and (or) thread is unsuitable for the used fabric.
4. Improper top threading.
5. Incorrect selected needle.
Crease
1. Excessively tight top tension.
stitch
2. Improper top threading.
3. Excessively thick top thread for the used fabric.
Unsmooth 1. Feed dog is wound by thread.
feed
1. Not surely inserting power plug.
Not rotation of
2. Clamping thread at shuttle race.
machine
3. Failure to replace the bobbin at original position after winding
bobbin.
Excessive 1. Not surely inserting power plug.
noise of 2. Clamping thread at shuttle race.
machine 3. Failure to replace the bobbin at original position after winding
bobbin.
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Causes
Soulution
Check or thread the
top
thread again;
check or change the
needle.
Clean the shuttle/
bobbin case.
Adjust tension of top
thread.
Check and change
proper needle
Check and change
proper needle.
Check and threading
the top thread again.
Adjust tension of
top thread
Clean the presser
foot.
Check the power
connector.
Check and clean the
shuttle.
Check and pull/push
the bobbin winding
pin to primary position.
Check and clean the
shuttle.
Check and pull/push
the bobbin winding
pin to primary position.