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6
Block diagram
.07
6
PFAFF 2231 and 2235 with PicoDrive P45 PD2-L
.07 .01
Optional
Light
barrier
Speed control unit
Control unit QA40 PD
A1
FSL
= Thread tension release
FK
= Thread clamp
PFA = Automatic presser foot lift
ML
= Machine running signal
-900 = Thread trimmer
VR
= Backtacking device
KS
= Knee switch for automatic presser foot lift
Synchronizer PD 6
2231
2235
Ministop drive unit
(long) with incremental
transducer
Mains plug
Installation
LED
LED
power
PC
Netzteil
supply
unit
for
software
download
Q1; HQ1
Power switch
29
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