Brother mfc8440 - Page 7

MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN
SERVICE MANUAL
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3.28 Paper Feeder ................................................................................................................. 4-72
3.29 Frame L / Drive Unit ....................................................................................................... 7-79
3.30 Reversing Release Solenoid (MFC-8840D/8840DN, DCP-8045D/8045DN only) ........ 4-83
3.31 Thermistor ASSY ........................................................................................................... 4-84
3.32 Fan Motor 60 Unit LV / Fan Motor 60 Unit..................................................................... 4-84
3.33 Frame R ......................................................................................................................... 4-85
4. PACKING ................................................................................................................4-87
5. GUIDELINES FOR LEAD FREE SOLDER..............................................................4-88
6. SCREW TORQUE LIST ..........................................................................................4-91
7. LUBRICATION ........................................................................................................4-93
8. HARNESS ROUTING..............................................................................................4-98
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 ....................................................................5-9
2.1 Fixing Unit....................................................................................................................... 5-10
2.2 Paper Feeding Kit........................................................................................................... 5-18
3. PERIODICAL CLEANING........................................................................................5-22
3.1 Cleaning the Machine Exterior....................................................................................... 5-22
3.2 Cleaning the Scanner .................................................................................................... 5-22
3.3 Cleaning the Printer ....................................................................................................... 5-23
3.4 Cleaning the Drum Unit.................................................................................................. 5-24
3.5 Cleaning the Scanner Window ...................................................................................... 5-24
3.6 Cleaning the Electrical Terminals .................................................................................. 5-25
4. MTBF / MTTR.......................................................................................................... 5-26
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