Index By Troubles (Mechanical Troubles) - ELNA E9020 Service Manual

[3] Index by troubles (mechanical troubles)

Phenomenon
Defective thread tension P-17 (2) Height of the presser foot
P-20 (6) Height of the feed dog
P-43, A Adjusting the actual feed amount
Stitch skipping P-17 (2) Position of the presser foot
P-19 (4) Clearance between the needle and the hook
Thread breakage P-18 (3) Height of the needle bar
Hitched stitch P-17 (1) Needle entry
Defective feed of the material P-17 (2) Height of the presser bar
Contact of the needle P-17 (1) Needle entry
P-26 (18) Timing belt
Pattern shape P-27 (20) Disengaging the main shaft
Automatic thread trimmer P-21 (8) Base tension
P-24 (14) Moving knife guide (Upper)
P-25 (16) Height of the looper
Noise P-26 (18) Timing belt
Buttonhole P-27 (19) Buttonhole
Bobbin winder P-33 (25) Automatic bobbin winding device
Needle threader P-28 (23) Needle threader
[Embroidering device] P-40 1 Replacing procedure of the motor
Item to be checked
P-20 (5) Inner hook detent
P-21 (8) Base tensio
P-26 (17) Bobbin thread tension
P-18 (3) Height of the needle bar
P-18 (3) Needle-to-hook timing
P-20 (6) Height of the feed dog
P-19 (4) Clearance between the neeedle and the hook
P-45 E Longitudinal feed and lateral feed
P-23 (12) Adjusting the knife disengagement
P-25 (15) Moving knife guide (Lower)
P-26 (17) Bobboin thread tension
P-28 (22) Motor belt
P-41 2 Adjusting the belt
P-46 W. Adjusting the material thickness
P-18 (3) Needle-to-hook timing
P-26 (18) Timing belt
P-20 (5) Inner hook detent plate
P-27 (21) Main shaft disengaging stopper
P-24 (13) Lateral position of the thread trimmer cam
P-26 (18) Timing belt
P-41 3 Adjusting the origin
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