Manual Bernina Bernette 340 Deco (page 62 of 75) (English)

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Troubleshooting 61

Problem

The machine is noisy.

The needle thread breaks

The bobbin thread breaks.

The needle breaks.

The screen display is not clear.

Skipped stitch

The machine does not run.

Abnormal noise when turning the machine

Patterns distorted

Function keys do not work properly.

The machine stops and «Lock» is indicated

on the status line on the LCD touch panel

Cause

1 Threads have been caught in the hook

mechanism.

2 Lint has collected in the bobbin holder.

1 The needle thread is not threaded

properly.

2 The needle thread tension is too tight.

3 The needle is bent or blunt.

4 The needle is inserted incorrectly.

5 The needle thread is not set in the

thread holder when starting the

machine.

6 Sewing speed is too high for the design

being sewn.

1 The bobbin thread is not threaded

properly in the bobbin holder.

2 Lint has collected in the bobbin holder.

3 The bobbin is damaged and does not

turn smoothly.

1 The needle is inserted incorrectly

2 The needle is bent or blunt.

3 The needle clamp screw is loose.

4 The needle thread tension is too tight.

1 The screen contrast of the visual touch

screen is not adjusted correctly.

2 The screen contrast has been faded due

to a continuous use of the machine.

1 The needle is inserted incorrectly.

2 The needle is bent or blunt.

3 The needle thread is not threaded

properly.

4 The defective needle (rusted, burred

needle eye) is used.

5 The embroidery hoop is not set properly.

6 The fabric is not tightly pulled on the

embroidery hoop.

7 A stabilizer is not being used.

1 A thread is caught in the hook race.

2 The control circuit is not working

correctly.

1 Something is caught between the

carriage and the arm.

2 The carriage is bumping into something

around the machine.

1 The fabric is not pulled tightly on the

embroidery hoop.

2 The embroider hoop is not fixed securely.

3 The carriage is bumping into something

around the machine.

4 The fabric is caught or pulled for some

reason when embroidering.

5 The needle thread tension is too tight.

6 A stabilizer is not used.

7 The needle thread on the wrong side of

fabric is not cut correctly.

1 Key position is not adjusted properly.

2 The control circuit is not working

correctly.

1 the machine is shutdown due to

overloading by thread jamming.

Reference

See page 59

See pages 11, 12.

See page 15.

See page 16, 23, 24

See page 16.

See page 12.

See page 28

See page 10

See page 59

Replace the bobbin.

See page 16, 23, 24

See page 16, 23

See page 16

See page 15

See page 27

Adjust the screen contrast. (See page 27)

See page 16, 23, 24

See pages 11, 12

Replace the needle.

See page 19

See page 18

Use a stabilizer.

See page 59

Turn the switch off and turn it on again.

Remove the object.

See page 18

See page 19

Remove the object.

Stop the machine and free the fabric.

See page 15

Use a stabilizer.

Cut extra needle thread on the wrong side.

See page 40

See page 28

Turn the switch off and turn it on again.

Remove jamme threads and start the

machine again.

Can Bernette Deco 340 be usef for normal stitching ? I would like to know before purchasing item. Submitted on 21-7-2020 at 13:29
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Bernina Bernette 340 Deco Manual

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