3
104 73 15-26
Main Circuit board - Circuit diagram Ambition 1.0 and1.5 ..........................................................................49
LCD Circuit board - Circuit diagram............................................................................................................50
Main Circuit board - Circuit diagram Ambition essential .............................................................................51
Power supply ..............................................................................................................................................52
Fault fi nding Ambition 1.0 - 1.5 ...................................................................................................................53
No operation of the machine ......................................................................................................................53
No operation sewing machine. ...................................................................................................................53
LCD (Touch panel) no display ....................................................................................................................53
No operation/function of the pushbutton.....................................................................................................53
No operation DC motor...............................................................................................................................53
No operation Start/ Stop, Reverse/ Autolock, LED light .............................................................................53
Speed adjustment no operation..................................................................................................................54
No operation of the Zig-zag step motor ......................................................................................................54
No operation of feed stepper motor ............................................................................................................54
The bobbin winder spindle is in ”off” position, ............................................................................................54
No operation of BH .....................................................................................................................................54
No operation of Foot controller ...................................................................................................................55
No function of LED lamp.............................................................................................................................55
Fault fi nding Ambition essential ..................................................................................................................56
No operation of the machine ......................................................................................................................56
No operation sewing machine. ...................................................................................................................56
LCD no display ...........................................................................................................................................56
No operation/function of the pushbutton.....................................................................................................56
No operation DC motor...............................................................................................................................57
No operation Needle position, reverse ......................................................................................................57
No operation of the Zig-zag step motor ......................................................................................................58
No operation of feed stepper motor ............................................................................................................58
The bobbin winder spindle is in ”off” position, ............................................................................................58
No operation of BH .....................................................................................................................................59
No operation of Foot controller ...................................................................................................................59
No function of LED lamp.............................................................................................................................59
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