Panasonic DX-600 Service Manual page 224

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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.

Laser Printer Motor Drive Circuit Block Diagram

Troubleshooting