4-27
4.1.12 Laser Unit and Toner Sensor PCB
(1) Disconnect the polygon motor flat cable, toner sensor harness, and laser diode harness from
the main PCB.
(2) Remove the three screws from the laser unit.
(3) Lift up the laser unit.
NOTE:
When handling the laser unit, take care not to touch the inside of the unit, glass, or
mirror.
NOTE:
On the small PCB at the right side of the laser unit is a 2-pin connector which is for
the adjustment in the factory. Do not disturb it.
Reassembling Notes
• On the underside of the laser unit, route the laser diode harness, polygon motor flat cable, and
toner sensor harness as illustrated in Subsection 4.1.26, "Harness routing G."
• Before putting the laser unit back into place, check for any toner particles, paper dust or dirt,
and clean them out.
• Make sure that the sponge is placed below the laser unit.
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 ...