224
DX-600/800
APR 2002
Edition 1.0
6.2.10
Printer Motor Drive Circuit
Motor Drive Circuit
The Printer Motor is a 4-phase uni-polar PM-type step motor. The step signals (pMMP0A to pMMP3A)
are transmitted to IC38 (the Chopper Drive Circuit) from IC3 SHINE output ports. The chopper current is
determined by the voltage at IC38, Pin3 and Pin13. The Printer Motor has two speeds, Slow and
Constant. The Printer Motor is powered by a +24 VDC supply. When the interlocks are open, the +24
VDC supply is cut off and the Printer Motor stops rotating.
Pulse
Motor
Laser Printer Motor Drive Circuit Block Diagram
SHINE
IC3
+24 VM
3
1
6
4
pMMP0a
nMMP0a
pMMP2a
CN54
nMMP2a
Motor
Driver
IC38
Summary of Contents for DX-600
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