Bedienungsanleitung Brother Brother Innov-is XJ1 (Seite 181 von 212) (Englisch)

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TROUBLESHOOTING

179

Appendix

■ Cause

Incorrect bobbin threading

If the bobbin thread is incorrectly threaded, instead of the

appropriate tension being applied to the bobbin thread, it

is pulled through the fabric when the upper thread is

pulled up. For this reason, the thread is visible from the

right side of the fabric.

■ Remedy

Correctly install the bobbin thread. (page 40)

Tangled Thread on Wrong Side of Fabric

■ Symptom

* The thread becomes tangled on the wrong side of

the fabric.

* After starting sewing, a rattling noise is made and

sewing cannot continue.

* Looking under the fabric, there is tangled thread in

the bobbin case.

■ Cause

Incorrect upper threading

If the upper thread is incorrectly threaded, the upper

thread passed through the fabric cannot be firmly pulled

up and the upper thread becomes tangled in the bobbin

case, causing a rattling noise.

■ Remedy

Remove the tangled thread, and then correct the upper

threading.

Remove the tangled thread. If it cannot be removed,

cut the thread with scissors.

* Refer to “Cleaning the Race” on page 176.

Remove the upper thread from the machine.

Correct the upper threading by following the

instructions in “Upper Threading” on page 42.

* If the bobbin was removed from the bobbin case,

refer to “Setting the Bobbin” on page 40 to correctly

install the bobbin.

Incorrect Thread Tension

■ Symptoms

• Symptom 1: The bobbin thread is visible from the

right side of the fabric.

• Symptom 2: The upper thread appears as a straight

line on the right side of the fabric.

• Symptom 3: The upper thread is visible from the

wrong side of the fabric.

• Symptom 4: The bobbin thread appears as a straight

line on the wrong side of the fabric.

• Symptom 5: The stitching on the wrong side of the

fabric is loose or has slack.

1 Wrong side of fabric

2 Bobbin thread visible on right side of fabric

3 Upper thread

4 Right side of fabric

5 Bobbin thread

6 Upper thread visible from wrong side of fabric

■ Cause/Remedy

 Cause 1

The machine is not correctly threaded.

The bobbin threading is incorrect.

Adjust the upper thread tension and then refer to “Upper

Thread is Too Tight” on page 178.

The upper threading is incorrect.

Adjust the upper thread tension and then refer to “Tangled

Thread on Wrong Side of Fabric” on page 179 to correct

the upper threading.

 Cause 2

A needle and thread appropriate for the fabric are not

being used.

The machine needle that should be used depends on the

type of fabric sewn and the thread thickness.

If a needle and thread appropriate for the fabric are not

being used, the thread tension will not be adjusted

correctly, causing wrinkles in the fabric or skipped

stitches.

* Refer to “FABRIC/THREAD/NEEDLE

COMBINATIONS” on page 49 to check that a

needle and thread appropriate for the fabric are

being used.

 Cause 3

An appropriate upper tension is not selected.

Select an appropriate thread tension. Refer to “Setting the

Thread Tension” on page 62.

The appropriate thread tension differs according to the

type of fabric and thread being used.

 Symptom 1  Symptom 3

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