Main Circuit Board - Circuit Diagram Ambition 1.0 And1.5 - Pfaff ambition essential 1.0 Service Manual

Main Circuit board - Circuit diagram Ambition 1.0 and1.5

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:
N1. Transformer
N3. LED lamp
N4. DC motor
N5. Step motor complete (zigzag)
N6. Step motor complete (feed)
N7. Flat cable
N8. Photo sensor complete (needle fl ow,
Needle bar up/down, speed)
N9. Photo sensor board (zigzag)
4. Remove the 3 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.
Dismantling and mounting
N10. Photo sensor board (B/H)
N11. Photo sensor board (feed)
N12. Foot controller receptacle
N13. Micro switch (presser foot)
N14. Micro switch (bobbin winder)
N15. IR. Thread detect launcher
N16. Ace. Thread detect receiver Interface bus
N17. Photo sensor complete (thread break)
N18. Micro switch (B/H)
104 73 15-26
49