41309401TH Rev.4
321 /
M
CN13
1
2
3
4
DM-T1
DM-T2
DM-T3
DM-T4
(2 phase excitation)
Drum motor
46F
Drum motor
drive
IC9
IOGA4
DMPH1
DMPH2
DMON1-N
IC2
Figure A.13 (1/2) Related Signals of Drum Motor
3.8
46F Circuit Diagram (8/13)
1.
Block diagram
46F-PCB circuit diagram (8/13) shown the consists of the following functions and connectors:
• IC9 (Drum motor driver)
• Connector CN13 that provides an interface between 46F board and the drum motor.
Figure A.13 shows the related signals of the drum motor.
2.
Function
1)
Drum motor control
This drum motor is driven by the motor driver IC9. It is two-phase excited and bipolar-driven
according to the DMPH1, DMPH2 and DMON1-N signals that are generated from the
IOGA4 (CPU). This drum motor rotates the image drum.
2)
Drum motor timing chart
Figure A.13 (2/2) Drum motor signal timing chart
T0
DMPH1-P
DMPH2-P
Operation at normal speed: T0 to T3 = 0.781 ms
T1
T2
T3
3)
Drive control
Time T0 to T3 determines the motor speed, while the difference of phase direction between
phase signals DMPH1-P and DMPH2-P determines the rotation direction, DMON1-N
signals control a motor coil current. According to the polarity of the phase signal, the coil
current flow as follows:
1) +38V
→
SW
→
motor coil
→
SW
→
resistor
→
earth, or,
2) +38
→
SW
→
motor coil
→
SW resistor
→
earth
The voltage drop across the resistor is input to comparator, where it is compared with a
reference voltage. If an overcurrent flow occurs, a limiter operates to maintain it within a
certain fixed amount of current.
Содержание OKIFAX4550
Страница 1: ...41309401TH Rev 4 1 592 OKIFAX4550 OKIOFFICE87 Maintenance Manual 2001 05 08 Rev 4 Oki Data Corporation...
Страница 156: ...41309401TH Rev 4 156 Figure 4 2 Appearance of the OKIFAX4550 OKIOFFICE87...
Страница 428: ...41309401TH Rev 4 428 SECTION 1 CABINET ASSEMBLY OKIFAX4550 OKIOFFICE87...
Страница 431: ...41309401TH Rev 4 431 SECTION 2 UNIT PRINTER...
Страница 433: ...41309401TH Rev 4 433 SECTION 3 UNIT 051 OPE PANEL...
Страница 435: ...41309401TH Rev 4 435 SECTION 4 OPEPANEL OPERATION PANEL ASSEMBLY...
Страница 437: ...41309401TH Rev 4 437 SECTION 5 FRAME ASSEMBLY SCANNER L...
Страница 439: ...41309401TH Rev 4 439 SECTION 6 PLATE ASSEMBLY SCANNER B...
Страница 441: ...41309401TH Rev 4 441 SECTION 7 PLATE ASSEMBLY SCANNER R...
Страница 443: ...41309401TH Rev 4 443 SECTION 8 FRAME ASSEMBLY SCANNER U...
Страница 445: ...41309401TH Rev 4 445 SECTION 9 COVER ASSEMBLY TOP...
Страница 447: ...41309401TH Rev 4 447 SECTION 10 PLATE ASSEMBLY BASE...
Страница 449: ...41309401TH Rev 4 449 SECTION 11 PRINTER BASE FRAME UNIT Heat assy...
Страница 452: ...41309401TH Rev 4 452 SECTION 12 PRINTER HEAT ASSY...
Страница 454: ...41309401TH Rev 4 454 SECTION 13 CABLES...
Страница 457: ...41309401TH Rev 4 457 46F PCB Assy 1 9 41196601...
Страница 466: ...41309401TH Rev 4 466 R46 PCB Assy 1 10 41033201...
Страница 475: ...41309401TH Rev 4 475 REF NO SYMBOL TYPE NAME PART NO Q TY REMARKS 148 Screw PSW3 4C 2 R46 PCB Assy 10 10 41033201...
Страница 476: ...41309401TH Rev 4 476 04W PCB Assy 1 3 40071401...
Страница 479: ...41309401TH Rev 4 479 EN9 PCB Assy 1 6 41144301...
Страница 485: ...41309401TH Rev 4 485 INU PCB Assy 41144501 US 1 4 41144502 INT 1 5...
Страница 493: ...41309401TH Rev 4 493 MPW1546 120V PCB Assy 1 5 SIPS1303...
Страница 498: ...41309401TH Rev 4 498 MPW1446 230V PCB Assy 1 6 SIPS1302...
Страница 504: ...41309401TH Rev 4 504 P2H PCB Assy 1 4 40599101...
Страница 508: ...41309401TH Rev 4 508 P6L PCB Assy 1 3 40386701...
Страница 511: ...41309401TH Rev 4 511 G4N PCB Assy 1 5 41033701...
Страница 585: ...41309401TH Rev 4 585 Figure H 7 1 2 RTC Time Read Figure H 7 2 2 RTC Time Set...
Страница 587: ...41309401TH Rev 4 587 Figure H 9 Figure H 10 1 3...
Страница 588: ...41309401TH Rev 4 588 Figure H 10 2 3 Figure H 10 3 3...
Страница 589: ...41309401TH Rev 4 589 Figure H 11 1 3 Figure H 11 2 3...
Страница 590: ...41309401TH Rev 4 590 Figure H 12 Figure H 11 3 3...
Страница 591: ...41309401TH Rev 4 591 Figure H 13 1 2 Figure H 13 2 2...
Страница 592: ...41309401TH Rev 3 592 592 Figure H 14 1 2 Figure H 14 2 2...