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104 73 15-26
Fault fi nding Ambition essential
No operation of the Zig-zag step motor
.
Check if the connectors JP1 and JP12 are properly connected to the main board (#1).
If the problem still remains.
Replace the ZigZag Photo sensor board (#2a).
Replace the ZigZag step motor (#2b).
Replace the main board.
No operation of feed stepper motor
.
Check if the connectors JP1 and JP11 are properly connected to the main board (#1)
If the problem still remains:
Replace the feed photo-sensor board (#2a).
Replace the feed stepping motor (#2b)
Replace the main board.
The bobbin winder spindle is in ”off” position,
Check if the connector JP17 is properly connected to the main board.(#1)
Check if the bobbin winder spindle and microswitch are making proper contact (#2).
Adjustment :
Loosen the two screws that holds the microswitch in place, reposition the micro-switch until it is positioned in
such a way that the bobbin spindle is pressing fully against the switch, tighten the two screws.
If the problem still remains:
Replace the bobbin winder micro-switch (#2)
Replace the main board (#1)
1
2
JP1
a
b
JP12
1
JP2
JP11
2
a
b
2
1
JP17