20/204
Maintenance of thread path
3-1-1
6. Needle plate
a) No burr and crack in needle hole and around it.
7. Pressure foot
a) No burr and crack inside hole
b) Not bent
8. Rotary hook
a) No burr and crack.
b) Hook point not warped.
c) Backlash between bobbin case holder and outer hook
should be less.
9. Keeper
a) No burr and crack on tip.
10. Thread adjusting spring
a) Should be robust.
Surface
Reverse side
Summary of Contents for HCS-1201-30
Page 12: ...12 204 2 Outer covers 2 1 Removal of outer covers ...
Page 81: ...81 204 3 4 Needle bar change unit 3 4 1 Fixing of needle bar change unit ...
Page 124: ...124 204 4 Electricity 4 1 Circuit board related parts 4 2 Sensors ...
Page 153: ...153 204 5 4 Revolution 5 4 1 Adjustment of revolution ...
Page 164: ...164 204 5 7 Detection of power outage 5 7 1 Adjustment of power outage detection ...
Page 168: ...168 204 Electrical connection diagram 6 1 1 ...
Page 169: ...169 204 List of electrical connection diagrams 6 1 2 ...
Page 170: ...170 204 6 2 Reference diagram for wiring 6 2 1 Reference diagram for wiring AC Iine ...
Page 171: ...171 204 Reference diagram for wiring AC Iine 6 2 1 ...
Page 173: ...173 204 VFNC1 S Connection of inverter and setting of parameter 6 3 1 ...
Page 174: ...174 204 FR S510W Connection of inverter and setting of parameter 6 3 2 ...
Page 198: ...198 204 7 3 Error 7 3 1 Error and measure ...
Page 202: ...202 204 7 4 Reference date 7 4 1 Tables for timing adjustment value ...