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3-3
3.2.1 Scanner Mechanism
3.2.1.1
Document feeding and ejecting mechanism
This mechanism consists of the document stacker, automatic document feeder (ADF), document
ejection roller ASSY, and document sensors. (For details about the sensors, refer to Subsection
3.2.3.)
If you set documents on the document stacker with their faces down and start the scanning
operation, then the scanner motor rotates so that the ADF (which consists of the separation roller
and ADF parts) feeds those documents into the machine, starting from the bottom sheet (first page)
to the top (last page), page by page. Each document advances with the document feed roller ASSY
to the scanner, and then it is fed out of the machine with the document ejection roller ASSY.
3.2.1.2
Scanner
The scanner uses a contact image sensor (CIS) unit which consists of an LED array illuminating
documents, a self-focus lens array collecting the reflected light, a CIS PCB carrying out
photoelectric conversion to output picture element data, and a cover glass on which a document
advances. When the document passes between the document pressure bar and the cover glass, it is
scanned.
Содержание Laser MFC-4800
Страница 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 ...
Страница 5: ...CHAPTER 1 GENERAL DESCRIPTION ...
Страница 16: ...CHAPTER 2 INSTALLATION ...
Страница 21: ...CHAPTER 3 THEORY OF OPERATION ...
Страница 23: ...3 1 3 1 OVERVIEW ...
Страница 26: ...3 4 3 2 2 Laser Printing Mechanism 3 2 2 1 Paper pulling in registration feeding and ejecting mechanism ...
Страница 31: ...3 9 Location of Sensors and Actuators ...
Страница 33: ...CHAPTER 4 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 39: ...4 4 Disassembly Order Flow ...
Страница 44: ...4 9 6 Turn the ASF upside down then remove the registration sensor actuator ...
Страница 82: ...4 45 Harness routing G Laser diode harness polygon motor flat cable and toner sensor harness on the laser unit ...
Страница 86: ...4 48 2 Scanner drive unit 3 Separation roller ...
Страница 87: ...4 49 4 Document feed roller ...
Страница 88: ...CHAPTER 5 MAINTENANCE MODE ...
Страница 95: ...5 6 Scanning Compensation Data List a b c d e ...
Страница 102: ...5 13 Key Button Entry Order ...
Страница 110: ...CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 140: ...FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 Appendix 1 EEPROM Customizing Codes ...
Страница 143: ...FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 Appendix 2 Firmware Switches WSW ...
Страница 190: ...A Main PCB 1 5 ...
Страница 191: ...A Main PCB 2 5 ...
Страница 192: ...A Main PCB 3 5 ...
Страница 193: ...A Main PCB 4 5 ...
Страница 194: ...A Main PCB 5 5 ...
Страница 195: ...B NCU PCB U S A Canada ...
Страница 196: ...B NCU PCB U K Norway Netherlands Finland Denmark Sweden ...
Страница 197: ...B NCU PCB Germany France Belgium Switzerland Ireland Austria Spain Italy South Africa ...
Страница 198: ...B NCU PCB Asia Oceania 1 2 ...
Страница 200: ...C Control Panel PCB ...
Страница 201: ...D Power Supply PCB 100 120V Low voltage power supply ...
Страница 202: ...D Power Supply PCB 200 240V Low voltage power supply Europe ...
Страница 203: ...D Power Supply PCB 200 240V Low voltage power supply Asia Oceania ...
Страница 204: ...D Power Supply PCB High voltage power supply ...
Страница 205: ...April 02 SM FAX002 8X5601 Printed in Japan ...