Search By Trouble (Related To Mechanical Components) - JUKI HZL-X Series Service Manual

[2] Search by trouble (related to mechanical components)

Phenomenon
Faulty thread tension
Stitch skipping
Thread breakage
Hitch stitch
Faulty material feed
Contact between needle and throat plate
or hook
Faulty pattern shape
Faulty automatic thread trimming
Faulty operating noise
Needle threader
Fails to start sewing
Faulty automatic presser foot lifting height
Straight stitch slide plate
Item to be checked
6-8: Position of the hook rotation stopper plate
6-9: Adjusting the bobbin thread tension
6-10-2: Pretension disk opening amount
6-10-3: Tension disk opening amount
6-10-4: Base tension opening amount
6-11: Adjusting the needle thread tension
6-1: Adjusting the needle bar height
6-2: Adjusting the needle entry point
6-5: Feed timing
6-6: Timing between the needle and the hook
6-7: Clearance between the needle and the blade point of hook
6-1: Adjusting the needle bar height
6-6: Timing between the needle and the hook
6-8: Position of the hook rotation stopper plate
6-2: Adjusting the needle entry point
6-3: Feed dog height
6-15: Adjusting the presser bar height
6-2: Adjusting the needle entry point
6-5: Feed timing
6-6: Timing between the needle and the hook
6-3: Feed dog height
6-18: Longitudinal feed
6-17-1: Lateral position of the thread trimming mechanism base
6-17-2: Phase of the catching unit driving cam
6-17-3: Replacing the thread trimming blade
6-4: Timing belt
6-16: Motor belt
6-12: Vertical position of the needle threading hook
6-20-1: Auto-lifter cam lever
6-20-3: Adjusting the height of the presser foot when it is lifted
6-19: Knee lifting wire
6-20-1: Auto-lifter cam lever
6-20-2: Presser-lifter position sensor
6-20-3: Adjusting the height of the presser foot when it is lifted
6-21-1: Adjusting the position of the straight stitch slide plate
6-21-2: Straight stitch slide plate sensor PCB
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