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Main Circuit board - Circuit diagram Ambition essential
FOR SAFTEY REASONS ALWAYS DISCONNECT THE POWER CORD FROM THE MACHINE
BEFORE REMOVING THE CIRCUIT BOARD AND MAKE SURE TO USE WRIST BAND AND ESD
MAT.
ATTENTION!
It is of the utmost importance that precautions are being taken in order to avoid damage of the electronics
by electro static discharges (ESD). To avoid these errors it is important to handle circuit boards in a
controlled way.
Dismantling
1. Remove rear covers.
2. Remove front cover.
3. Disconnect the cables from the circuit board according to below:
4. Remove the 4 screws (A) holding the circuit board.
5. Lift away the PC-board from the machine, and ALWAYS hold the PC board by the edges.
6. Place the PC-board in a ESD Bag.
JP1. Step motor complete (zigzag)
JP2. Step motor complete (Feed)
JP3. LCD
JP6. DC motor
JP7. Transformer
JP8. LED lamp 2
JP9. LED lamp 1
JP10. Photo sensor board (B/H)
JP11. Photo sensor board (Feed)
JP12. Photo sensor board (zigzag)
JP13. Photo sensor complete
(Needle fl ow, Needle bar Up/down, speed)
JP14. Micro switch (Presser foot)
JP15. Micro switch (B/H)
JP16. Foot controller receptacle
JP17. Micro switch (Bobbin winder)
Dismantling and mounting
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