HappyJapan HCD2-1501-40, Maintenance Manual

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166
11-2-4
Trouble shooting (Off-registration of pattern)
Trouble Factor Cause of trouble and measure Page
Off-registration
Mechanical
1. Does frame move smoothly?
of pattern 1-1 Avoid curling of thread and cloth.
1-2 Reinstall of outer cover in case of touch with outer cover. 2-2
2. Is carriage belt tension proper?
3-7-1
2-1 Adjust all belts as specified. 3-7-3
3. No loosening of screws on carriage drive?
3-1 Check screw. If loosened, tighten firmly.
4. No lints or dust around idler pulley on carriage?
4-1 Clean
5. No damage in carriage belt?
3-7-2
5-1 If damaged, replace. 3-7-4
6. No backlash of back and forth in moving head?
6-1 Adjust positioning roller shaft to remove backlash back and forth.
3-3-3
7. Is height of pressure foot proper?
7-1 Adjust as specified.
3-2-10
8. No problem in motion of pulse motor?
8-1 Check wiring. If screw got loosened, tighten more.
8-2 After 9-1, still problem, then replace.
9. No problem in motion of CONT-D2 board ?
9-1 Check wiring. If screw got loosened, tighten more.
9-2 After 10-1, still problem, then replace. 4-2
10. Does't other frame than Happy's genuine one used?
10-1 If frame is too heavy, don't use it.
10-2 If setting is not proper, set it so as not to move.
11. No problem in CONT-D2 board?
11-1 Try to initialize.
7-4
11-2 Replace of CONT-D2 board.
12. Is number of revolution proper?
12-1 Make automatic speed setting. 7-4
13. Not affected by noise?
13-1 Don't use the machine near where noise is generated.
( ) ----- Reference instruction book