Brother DCP 8040 - B/W Laser - All-in-One Service Manual page 7

3.28 Paper Feeder.................................................................................................................. 4-71
3.29 Frame L / Drive Unit ....................................................................................................... 7-78
3.30 Reversing Release Solenoid (MFC-8840D/8840DN, DCP-8045D/8045DN only).......... 4-82
3.31 Thermistor ASSY............................................................................................................ 4-83
3.32 Fan Motor 60 Unit LV / Fan Motor 60 Unit...................................................................... 4-83
3.33 Frame R.......................................................................................................................... 4-84
4. PACKING.............................................................................................................. 4-86
5. GUIDELINES FOR LEAD FREE SOLDER............................................................ 4-87
6. SCREW TORQUE LIST........................................................................................ 4-90
7. LUBRICATION...................................................................................................... 4-92
8. HARNESS ROUTING ........................................................................................... 4-97
CHAPTER 5 PERIODIC MAINTENANCE ............................................... 5-1
1. CONSUMABLE PARTS .......................................................................................... 5-1
1.1 Drum Unit ......................................................................................................................... 5-1
1.2 Toner Cartridge ................................................................................................................ 5-3
2. PERIODICAL REPLACEMENT PARTS .................................................................. 5-7
2.1 Fixing Unit ......................................................................................................................... 5-8
2.2 Paper Feeding Kit ........................................................................................................... 5-16
3. PERIODICAL CLEANING ..................................................................................... 5-20
3.1 Cleaning the Machine Exterior ....................................................................................... 5-20
3.2 Cleaning the Scanner ..................................................................................................... 5-20
3.3 Cleaning the Printer ........................................................................................................ 5-21
3.4 Cleaning the Drum Unit .................................................................................................. 5-22
3.5 Cleaning the Scanner Window ....................................................................................... 5-22
3.6 Cleaning the Electrical Terminals ................................................................................... 5-23
4. MTBF / MTTR ....................................................................................................... 5-24
CHAPTER 6 TROUBLESHOOTING ....................................................... 6-1
1. INTRODUCTION .................................................................................................... 6-1
1.1 Initial Check ...................................................................................................................... 6-1
1.2 Warnings for Maintenance Work...................................................................................... 6-2
1.3 Identify the Problem.......................................................................................................... 6-3
2. ERROR MESSAGE ................................................................................................ 6-4
2.1 Error Message on the LCD............................................................................................... 6-4
2.2 Error Codes Shown in the "MACHINE ERROR X X" message........................................ 6-7
3. PAPER PROBLEMS ............................................................................................. 6-11
3.1 Paper Loading Problems ................................................................................................ 6-11
3.2 Original Jams.................................................................................................................. 6-12
3.2.1 Original is jammed in the top of the ADF unit....................................................................6-12
3.2.2 Original is jammed inside the ADF unit .............................................................................6-12
3.3 Paper Jams .................................................................................................................... 6-13
3.3.1 Clearing jammed paper.....................................................................................................6-13
3.3.2 Paper is jammed in the Duplex Tray (For MFC-8840D/8840DN, DCP-8045D/8045DN) ..6-16
3.3.3 Causes & countermeasures..............................................................................................6-17
MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN
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SERVICE MANUAL