
P2H
A3 - 27
40672201TH Rev. 4
2)
The CB2 output voltage is stabilized by keeping the primary flyback voltage
obtained by switching operation of Q1 at a constant voltage by D7 and D6 and D5.
2.
Photosensors
The photosensors mounted on this circuit board/sensor board supervise the paper
running state during printing. These four photosensors are used in this printer as listed
below. All of their outputs enter IOGA4 for referring to and processing by the IOGA4
(CPU).
1)
PS1 (photosensor 1): TNRSNS
Detects the lack of the toner.
2)
PS2 (photosensor 2): PSIN
Detects the leading part of the paper and gives the supervision timing for switching
from hopping operation to feeding operation. Supervises the paper running state
and the paper size according to the paper arrival time and running time.
3)
PS3 (photosensor 3): PSOUT
Supervises the paper feed according to the time of arrival at the sensor and the
time of passage of paper.
4)
PS4 (photosensor 4): WRSNS
Detects the leading part of sensor.
Supervises the paper running state.
3.
Cover open circuit
The cover open circuit consists of CVSW. When the Cover-Main is opened, the cover
open microswitch (CVSW) on the OLHV/TLHV board is turned off to cut the supply of
H5V to the high-voltage power supply circuit. As a result all high-voltage outputs are
interruptted. At the same time, the CVOPN-N signal is sent to the control board to notify
it the off state of the microswitch, and the control board performs the cover open process-
ing.
Содержание OKIOFFICE84
Страница 7: ...40672201TH Rev 4 CHAPTER 1 GENERAL INFORMATION...
Страница 44: ...40672201TH Rev 4 CHAPTER 2 INSTALLATION PROCEDURE...
Страница 120: ...40672201TH Rev 4 CHAPTER 3 BRIEF TECHNICAL DESCRIPTION...
Страница 128: ...40672201TH Rev 4 CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY...
Страница 133: ...4 5 40672201TH Rev 4 Appearance of the OKIOFFICE84 OKIFAX 4500 FX051 CP4 Fig 01...
Страница 155: ...40672201TH Rev 4 CHAPTER 5 ADJUSTMENTS...
Страница 159: ...40672201TH Rev 4 CHAPTER 6 CLEANING AND MAINTENANCE...
Страница 187: ...40672201TH Rev 4 CHAPTER 7 TROUBLESHOOTING AND REPAIR FOR OKIOFFICE84 OKIFAX 4500...
Страница 232: ...40672201TH Rev 4 CHAPTER 8 DIPSWITCHS SETTING TABLES...
Страница 254: ...40672201TH Rev 4 Appendix A PC Board Descriptions and Operation Second Edition December 1998 Oki Data Corporation...
Страница 255: ...40672201TH Rev 4...
Страница 313: ...40672201TH Rev 4...
Страница 334: ...C 3 40672201TH Rev 4...
Страница 335: ...40672201TH Rev 4 C 4...
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Страница 337: ...40672201TH Rev 4 C 6 Reading...
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Страница 357: ...40672201TH Rev 4 C 26 Low Voltage Low Voltage High Voltage High Voltage...
Страница 358: ...C 27 40672201TH Rev 4...
Страница 361: ...40672201TH Rev 4 C 30 Low Voltage secondary High Voltage primary...
Страница 365: ...40672201TH Rev 4 C 34 Low Voltage secondary High Voltage primary...
Страница 370: ...C 39 40672201TH Rev 4 High Voltage primary Low Voltage secondary...
Страница 383: ...40672201TH Rev 4 C 52...
Страница 387: ...40672201TH Rev 4 C 56...
Страница 390: ...40672201TH Rev 4...
Страница 393: ...OKIOFFICE84 OKIFAX 4500 40672201TH Rev 4 D 2 SECTION 1 CABINET ASSEMBLY FAX NIP FX051...
Страница 396: ...OKIOFFICE84 OKIFAX 4500 D 5 40672201TH Rev 4 SECTION 2 UNIT PRINTER...
Страница 398: ...OKIOFFICE84 OKIFAX 4500 D 7 40672201TH Rev 4 SECTION 3 UNIT 051 OPE PANEL...
Страница 400: ...OKIOFFICE84 OKIFAX 4500 D 9 40672201TH Rev 4 SECTION 4 OPEPANEL OPERATION PANEL ASSEMBLY...
Страница 402: ...OKIOFFICE84 OKIFAX 4500 D 11 40672201TH Rev 4 SECTION 5 FRAME ASSEMBLY SCANNER L...
Страница 404: ...OKIOFFICE84 OKIFAX 4500 D 13 40672201TH Rev 4 SECTION 6 PLATE ASSEMBLY SCANNER B...
Страница 406: ...OKIOFFICE84 OKIFAX 4500 D 15 40672201TH Rev 4 SECTION 7 PLATE ASSEMBLY SCANNER R...
Страница 408: ...OKIOFFICE84 OKIFAX 4500 D 17 40672201TH Rev 4 SECTION 8 FRAME ASSEMBLY SCANNER U...
Страница 410: ...OKIOFFICE84 OKIFAX 4500 D 19 40672201TH Rev 4 SECTION 9 COVER ASSEMBLY TOP...
Страница 412: ...OKIOFFICE84 OKIFAX 4500 D 21 40672201TH Rev 4 SECTION 10 PLATE ASSEMBLY BASE...
Страница 414: ...OKIOFFICE84 OKIFAX 4500 D 23 40672201TH Rev 4 SECTION 11 PRINTER BASE FRAME UNIT Heat assy...
Страница 417: ...OKIOFFICE84 OKIFAX 4500 40672201TH Rev 4 D 26 SECTION 12 PRINTER HEAT ASSY...
Страница 419: ...OKIOFFICE84 OKIFAX 4500 40672201TH Rev 4 D 28 SECTION 13 CABLES...
Страница 421: ...40672201TH Rev 4 Appendix E Boards Layout OKIOFFICE84 OKIFAX 4500 Second Edition December 1998 Oki Data Corporation...
Страница 422: ...40672201TH Rev 4...
Страница 424: ...E 1 40672201TH Rev 4...
Страница 425: ...40672201TH Rev 4 E 2...
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Страница 433: ...40672201TH Rev 4 E 10...
Страница 434: ...E 11 40672201TH Rev 4...
Страница 435: ...40672201TH Rev 4 Appendix F PC Loading Second Edition December 1998 Oki Data Corporation...
Страница 436: ...40672201TH Rev 4 FX 051 SYSTEM SPECIFICATION PC LOADING PART Ver 00 11 Oki Data Confidential...
Страница 448: ...40672201TH Rev 4 Appendix G RMCS SYSTEM MANUAL For Model 30 Second Edition December 1998 Oki Data Corporation...
Страница 473: ...40672201TH Rev 4 H 18 Figure 2 1 IC16 Pin 77 IC16 Pin 78 IC16 Pin 79 IC16 Pin 80...
Страница 481: ...40672201TH Rev 4 Appendix I FAX2NET FUNCTION First Edition October 1999 Oki Data Corporation...