Chapter 5 Periodic Maintenance - Brother MFC8440 Service Manual

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 T hermistor ASSY............................................................................................................ 4-83
3.32 Fan Motor 60 Unit LV / Fan Motor 60 Unit...................................................................... 4-83
3.33 Fram e R.......................................................................................................................... 4-84
4. P ACKING.............................................................................................................. 4-86
5. GUIDELINES FOR LEAD FREE SOLDER............................................................ 4-87
6. SCREW TORQUE LIST........................................................................................ 4-90
7. L UBRICATION...................................................................................................... 4-92
8. H ARNESS ROUTING ........................................................................................... 4-97

CHAPTER 5 PERIODIC MAINTENANCE ............................................... 5-1

1. C ONSUMABLE PARTS .......................................................................................... 5-1
1.1 Drum
1.2 T oner Cartridge ................................................................................................................ 5-3
2. PERIODICAL REPLACEMENT PARTS .................................................................. 5-7
2.1 Fixing Unit ......................................................................................................................... 5-8
2.2 Paper Feeding Kit ........................................................................................................... 5-16
3. P ERIODICAL CLEANING ..................................................................................... 5-20
3.1
3.2
3.3
3.4
3.5
3.6
4. MTBF / MTTR ....................................................................................................... 5-24
CHAPTER 6 TROUBLESHOOTING ....................................................... 6-1
1. INT RODUCTION .................................................................................................... 6-1
1.1 Initial
1.2
1.3
2. ER ROR MESSAGE ................................................................................................ 6-4
2.1
2.2
3. PAPER
3.1
3.2 O riginal Jams.................................................................................................................. 6-12
3.3 Paper
fineline6
Unit ......................................................................................................................... 5-1
Cleaning the Machine Exterior ....................................................................................... 5-20
Cleaning the Scanner ..................................................................................................... 5-20
Cleaning the Printer ........................................................................................................ 5-21
Cleaning the Drum Unit .................................................................................................. 5-22
Cleaning the Scanner Window ....................................................................................... 5-22
Cleaning the Electrical Terminals ................................................................................... 5-23
Check ...................................................................................................................... 6-1
Warnings for Maintenance Work...................................................................................... 6-2
Identify the Problem.......................................................................................................... 6-3
Error Message on the LCD............................................................................................... 6-4
Error Codes Shown in the "MACHINE ERROR X X" message........................................ 6-7
PROBLEMS ............................................................................................. 6-11
Paper Loading Problems ................................................................................................ 6-11
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
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
SERVICE MANUAL