Pfaff 571 Instruction Manual page 48

Block diagram
12 PFAFF 570 / 590 with MD-4-57-220-CE
.02
VR1 VR3
570 / 590
FSL
PFA
Control panel
C-200-1.0
STOP
VR2
-900
Speedcontrolunit
Control unit MD-4-57-220-CE
power switch
VR1 = Roller presser release
VR2 = Feed switch-over
VR3 = VR3 – magnet (needle) only on the 571 + 591
FSL = Thread tension release
PFA = Automatic presser foot lift
-900 = Thread trimmer
Mains plug
STOP = Start inhibitor
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