Page: 35
Service Guide DOC-IT3000/4000
Chapter 2 Principles of Operation
2.2.04 Main Motor
This pulse motor is driven by the motor drive IC(M54646). It is two-phase excited and
bipolar-driven according to the DM-PH0 and DM-PH1 signals generated from the LSI. The level of
the input voltage to the VR1 and VR2 terminals is compared with that of the voltage drop across
R35, R36, R94 and R95 fed back to pins 1 and 28. The coil current is kept constant by cutting off
the drive time temporarily when the feedback voltage is higher.
This pulse motor is driven in the reverse direction in the following case.
Summary of Contents for DOC-IT3000
Page 34: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 41: ......
Page 98: ...Paper End Sensor Photosensor Cover Open Switch...
Page 119: ...Page 79 Service Guide DOC IT3000 4000 Chapter 3 Maintenance Disassembly...
Page 121: ...Page 80 Service Guide DOC IT3000 4000 Chapter 3 Maintenance Disassembly...
Page 123: ...Page 81 Service Guide DOC IT3000 4000 Chapter 3 Maintenance Disassembly...
Page 125: ...Page 82 Service Guide DOC IT3000 4000 Chapter 3 Maintenance Disassembly...
Page 127: ...Page 83 Service Guide DOC IT3000 4000 Chapter 3 Maintenance Disassembly...
Page 129: ...Page 84 Service Guide DOC IT3000 4000 Chapter 3 Maintenance Disassembly...
Page 145: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 191: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 212: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 342: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 352: ......
Page 361: ......
Page 366: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 370: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 376: ......
Page 384: ...Partner Exchange BPX for any updates to this material http bpx okidata com...
Page 390: ...Page 259 Service Guide DOC IT3000 4000 Chapter B Illustrated Parts Listing B 2 03 Upper Unit...
Page 393: ...Page 260 Service Guide DOC IT3000 4000 Chapter B Illustrated Parts Listing B 2 04 Upper Unit...
Page 395: ...Page 261 Service Guide DOC IT3000 4000 Chapter B Illustrated Parts Listing B 2 05 Upper Unit...
Page 400: ...Page 263 Service Guide DOC IT3000 4000 Chapter B Illustrated Parts Listing B 2 07 Lower Unit...