Brother BAS-342G PS Instruction Manual page 81
Direct drive programmable electronic pattern sewer, "perfect stitch"
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Also See for BAS-342G PS:
- Service manual (153 pages) ,
- Manual de instrucciones (86 pages) ,
- Instruction manual (84 pages)
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Problem
Upper thread breaks.
Lower thread breaks.
Skipped stitches occur.
Needle is broken.
Thread jamming.
Cause
Upper thread tension is too strong.
Needle is incorrectly installed.
Thread is too thick for the needle.
Thread take-up spring tension and
height are incorrect.
Damage or burring of the rotary hook,
needle hole plate, needle or thread path.
Thread breaking from heat
(Synthetic thread).
Thread is threaded incorrectly.
Damage to the hook stopper.
Lower thread tension is too strong.
Damage to the needle hole plate or
bobbin case.
Clearance between needle and rotary
hook tip is too great.
Needle and rotary hook timing is
incorrect.
The driver needle guard is covering the
needle more than necessary.
Needle is bent.
Needle is incorrectly installed.
Intermittent height of intermittent presser
foot is too high.
Clearance between needle and rotary
hook tip is too great.
Needle is bent.
Needle deflection.
Needle is too thin.
Thread take-up spring tension and
height are incorrect.
Needle and rotary hook timing is
incorrect.
Adjust the upper thread tension.
Install the needle correctly.
Select a thread that matches the needle.
Adjust the tension and height of the
thread take-up spring.
Repair or replace the problem part.
Use a needle cooler.
Thread the thread correctly.
Buff the hook stopper to remove the
damage, or replace the hook stopper.
Adjust the lower thread tension.
Repair or replace the problem part.
Adjust the needle clearance.
Adjust the needle bar lift amount.
Adjust the driver needle guard.
Replace the needle.
Install the needle correctly.
Adjust the intermittent height of the
intermittent presser foot.
Adjust the needle clearance.
Adjust the needle bar lift amount.
Replace the needle.
Select a needle that is suitable for the
sewing conditions.
Reduce the sewing speed.
Select a needle that is suitable for the
sewing conditions.
Adjust the tension and height of the
thread take-up spring.
Adjust the needle bar lift amount.
BAS-342G PS
13. TROUBLESHOOTING
Remedy
Reference
P. 24
P. 19
P. 24
P. 55
*
P. 20
P. 20
*
P. 24
*
P. 58
P. 57
P. 57
P. 19
P. 32
P. 58
P. 57
P. 24
P. 30
P. 24
P. 55
P. 57
72
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