JUKI LK-1900A Series Engineer's Manual page 70

3) SDC board
The power supply is generated and error check is carried out. Main shaft control is effected, receiving the com-
mands from the MAIN board.
F4: 4A
Fuse fixed to the
board
For +85V source
primary
F5: 4A
Fuse fixed to the
board
For +33V source
primary
LED4: For power
supply check
CN17: For power supply
← FLT board
CN16: For Main shaft motor
power →Main shaft motor
CN15: For MAIN communication
→ Main board
CN14: For Main shaft encoder
→ Main shaft motor
– 66 –
F1: 5A
Time lag fuse
For +85V
F2: 3.15A
Time lag fuse
For +33V
F3: 2A
Quick-action fuse
For +24V
CN10: 24V for the fan
CN11: Power connector →
MAIN board
+5V, +12V, +24V, +33V, +85V
LED3: For operation and
error check
DIPSW
2-1: For writing-off
2-2: For mode setting-off
2-3: For mode setting-off
2-4: For mode setting-off
CN13: For momentary interruption
detection ← FLT board
DIPSW
1-1: For testing-off
1-2: For testing-off
1-3: For testing-off
1-4: Penetration force-off