Happy HCS2-1201-30, Руководство по обслуживанию

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6-2-2 Trouble shooting (Thread break)
Trouble Factor Cause of trouble and measure Page
Thread break
Mechanical
1. Is needle drop unstable by vibration? (2-4)
1-1 Reconsider where to install the machine.
1-2 Move the machine to floor fully reinforced.
1-3 Use strong table to be able to endure vibration.
2. No burr or scratch in thread guide hole?
3-1-1
2-1 Remove burr and scratch.
2-2 Replace of thread guide.
3. No problem in thread adjusting spring?
3-1-1
3-1 Replace spring if it doesn't spring.
3-2 If weak or broken, replace it.
4. Does detecting roller make smooth turn?
4-1 Clean inside hole of bearing.
4-2 Correct so as for slit disc not to touch sensor.
4-2-2
4-3 Correct so as for cable not to touch slit disc.
4-4 Check cable of TC 12 Board is unconnected
5. No problem in thread guide unit and thread tension ass’y?
3-1-1
5-1 Remove burr and scratch if appeared.
5-2 Remove lints and clean.
6. Does disc on thread tension ass’y. turn smoothly?
3-1-1
6-1 Remove lints and clean.
6-2 Replace
7. Is backlash between take-up lever and take-up crank roller not bigger?
7-1 Replace of take-up lever.
3-3-9
8. No problem in needle holder?
8-1 Remove burr and scratch.
8-2 Make proper fixing. (direction)
3-1-2
8-3 Replace if thread guide is bent. 3-1-1
9. No burr and scratch on needle plate? 3-1-1
9-1 Remove burr and scratch in needle hole.
9-2 Remove burr and scratch around needle hole on back of needle plate.
9-3 Replace it if not furbished.
9-4 If furbishing made needle hole wider, replace it.
10. No problem in pressure foot?
10-1 Remove burr and scratch.
3-1-1
10-2 Correct bent. 3-1-1
10-3 Adjust height. 3-2-12
10-4 Replace of pressure foot. 3-2-11
10-5 Replace of pressure foot drive cam. 3-2-9