Brother MFC-7450

iv
Confidential
7. SOFTWARE SETTING PROBLEMS ......................................................................................... 1-45
8. NETWORK PROBLEMS ........................................................................................................... 1-46
9. TROUBLESHOOTING OF THE COMMUNICATIONS ERROR ................................................ 1-47
10. Troubleshooting of the control panel ......................................................................................... 1-51
11. Troubleshooting of fax functions ................................................................................................ 1-53
12. OTHERS PROBLEMS ............................................................................................................... 1-57
CHAPTER 2 PERIODICAL MAINTENANCE ...................................................... 2-1
1. CONSUMABLE PARTS ............................................................................................................... 2-1
2. PERIODICAL PEPLACEMENT PARTS ...................................................................................... 2-2
CHAPTER 3 DISASSEMBLY AND ASSEMBLY ................................................ 3-1
1. SAFETY PRECAUTIONS ............................................................................................................ 3-1
2. PACKING ..................................................................................................................................... 3-2
3. SCREW TORQUE LIST .............................................................................................................. 3-3
4. LUBRICATION ............................................................................................................................. 3-5
5. OVERVIEW OF GEARS .............................................................................................................. 3-8
6. HARNESS ROUTING .................................................................................................................. 3-9
7. DISASSEMBLY FLOW .............................................................................................................. 3-15
8. DISASSEMBLY PROCEDURE .................................................................................................. 3-16
8.1 SEPARATION PAD ASSY ................................................................................................ 3-17
8.2 FRONT COVER ASSY ..................................................................................................... 3-18
8.2.1 FRONT COVER ASSY ......................................................................................... 3-18
8.2.2 PAPER STOPPER L / PAPER STOPPER S ....................................................... 3-20
8.3 BACK COVER / OUTER CHUTE ASSY ........................................................................... 3-21
8.3.1 BACK COVER ...................................................................................................... 3-21
8.3.2 OUTER CHUTE ASSY ......................................................................................... 3-22
8.4 FUSER COVER ASSY ..................................................................................................... 3-23
8.4.1 FUSER COVER ASSY ......................................................................................... 3-23
8.4.2 EJECT ACTUATOR / EJECT ACTUATOR SPRING ........................................... 3-24
8.4.3 EJECT ROLLER ASSY 1 / BUSH C / BUSH R / BUSH L ................................... 3-25
8.5 JOINT COVER SUB CHUTE ASSY ................................................................................. 3-26
8.6 INNER CHUTE ASSY ....................................................................................................... 3-27
8.7 FUSER UNIT .................................................................................................................... 3-28
8.8 CORNER COVER ............................................................................................................ 3-30
8.9 SIDE COVER L ASSY / SIDE COVER SUB L ................................................................. 3-31
8.9.1 SIDE COVER L ASSY .......................................................................................... 3-31
8.9.2 SIDE COVER SUB L ............................................................................................ 3-32