JUKI LK-1900AN Engineer's Manual page 82

5) MAIN board
Overall controls are carried out, such as pulse motor driving for shafts, control of active tension, etc.,
memory switch control, etc.
CN34: For the panel
CN49:
Temporary stop
(for OP)
CN45:
Needle thread
clamp PM
(yellow)
CN47:
Material drawing
MG
(LK-1901AN)
CN46:
For air (for OP)
CN36: For BR35
CN32: For the SDC board
CN42: X feed PM (white)
CN31: Power ← SDC board
+5V, +12V, +24V, +33V, +85V
CN38: For the INT board (head)
40108917
CN43: Y feed PM (blue)
– 70 –
U11:
LK-1900 PROM
27C256
CN44:
Clamp PM (red)
CN39:
Active tension
CN40:
Pedal sensor
CN41:
Foot pedal
(for OP)