Janome JUNO E1030 - Noisy operation; Deformation pattern

3
 Condition Cause Howtox Reference
6.Noisy
operation
1. Backlashbetweenhookgear
 andlowershaftgearistoo
 great.
2. Lowershaftgearisloose.
3.Inappropriatebelttension.
4. Notenoughoil.
5.Uppershaftgearisloose.
Eliminatethebacklash.
Eliminatethelooseness.
Seepartremovalandreplacement
“drivingmotor(DCmotor)”.
Oilallmovingparts.
Eliminatethelooseness.
P. 26
7.Deformation
pattern
1.Inappropriatefeedbalance.
2. Toptensionistoostrong.
Adjustthefeedbalancingscrew.
Seemechanicaladjustment
“Toptension”.
P. 16
P. 15