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Condition
6. Noisy
1. Backlash between hook gear and
operation
lower shaft gear is too great.
2. Lower shaft gear is loose.
3. Inappropriatte belt tension.
4. Not enough oil.
5. Upper shaft gear is loose.
1. Inappropriate feed balance.
7. Deformation
pattern
2. Top tension is too strong.
Cause
Eliminate the backlash.
Eliminate the looseness.
See part removal and replacement
"driving motor (DC motor)".
Oil all moving parts.
Eliminate the looseness.
Adjust the feed balancing screw.
See mechanical adjustment
"Top tension".
3
How to fix
Reference
P. 25
P. 16
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