Brother BAS-342G Bedienerhandbuch PDF herunterladen (Seite 79)

13. TROUBLESHOOTING㩷

BAS-342G

13. TROUBLESHOOTING

• Please check the following points before calling for repairs or service.

• If the following remedies do not fix the problem, turn off the power switch and consult a qualified technician or the place of

purchase.

CAUTION

Turn off the power switch and disconnect the power cord before carrying out troubleshooting.

If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.

Problem Cause Remedy Reference

Work clamp moves stiffly.

Apply a suitable amount of grease to the

sliding parts of the work clamp slider.

Work clamp does not

lift.

Work clamp does not

drop.

Air tube of presser lifter cylinder is bent

or damaged.

Straighten the bend in the tube or

replace the tube.

Work clamp lift amount

is incorrect.

Work clamp lifter lever position is

incorrect.

Adjust the position of the work clamp

lifter lever.

P. 65

Work clamp does not

lift to the maximum

height.

Cylinder joint position is incorrect. Adjust the position of the cylinder joint.

Adjust the height of the thread wiper. P. 62

The thread wiper is obstructing the

needle.

Adjust the stroke of the thread wiper. P. 62

Thread wiper does

not operate correctly.

Thread wiper position is incorrect. Adjust the stroke of the thread wiper. P. 62

Lower thread winds

to one side.

Bobbin winder tension assembly height

is incorrect.

Adjust the height of the bobbin winder

tension assembly.

P. 22

Lower thread winding

amount is incorrect.

Bobbin presser position is incorrect. Adjust the position of the bobbin presser. P. 22

Stitches being skipped at the sewing

start.

Refer to "Skipped stitches occur". P. 71

Upper thread trailing length is uneven. Adjust the sub-tension. P. 24

Thread slips out of

the needle.

Position of shuttle race thread guide is

incorrect

Adjust the position of the shuttle race

thread guide.

P. 57

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