Baby Lock BLE1 AT, Service Manual

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8. TROUBLE SHOOTING
8-1 NEEDLE THREADS ARE UNBALANCED ;
* Is the serger threaded correctly? See Quick Reference Guide
* Are the threads snapped in the head guide? See Instruction Book P.12
* Is the stitch selector positioned correctly? See Quick Reference Guide
* Is the looper thread fine-tuning screw positioned correctly?
See Instruction Book P.13
* Are the threads recommended high quality? See Instruction Book P.7
* Is the needle thread sensor cable positioned correctly? See P7, 3-6
* Is the needle thread sensor cable adjusted correctly? See P9, 4
8-2 LOOPER THREADS ARE UNBALANCED ;
* Is the serger threaded correctly? See Quick Reference Guide
* Are the threads snapped in the head guide? See Instruction Book P.12
* Is the stitch selector positioned correctly? See Quick Reference Guide
* Is the looper thread fine-tuning screw positioned correctly?
See Instruction Book P.13
* Are the threads recommended high quality? See Instruction Book P.7
* Is the serger threaded correctly? See Quick Reference Guide
* Are the threads snapped in the head guide? See Instruction Book P.12
* Is the stitch selector positioned correctly? See Quick Reference Guide
* Is the looper thread fine-tuning screw positioned correctly?
See Instruction Book P.13
* Are the threads recommended high quality? See Instruction Book P.7
* Is the looper thread sensor cable positioned correctly? See P7, 3-6
* Is the looper thread sensor cable adjusted correctly? See P9, 4
8-3 THREAD BREAKS ;
8-4 NEEDLE THREADER WORKS IMPROPERL Y ;
* Are the green marks on the pulley and machine body aligned? See P11, 5
* Are the needles inserted until the end of clamp holder? See P11, 5
* Is the height of each needle correct? See P 2
* Is the adjustment of needle threader correct? See P11, 5
8-5 JET AIR THREADER DOES NOT WORK
*Is air deflated from pump? See P13, 7
*Are pipes connected properly? See P13, 6
*Are there any lints or thread in pipes?
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