Service manual

MFC-8420/8820D/8820DN, DCP-8020/8025D/8025DN
SERVICE MANUAL
v
3.28 Paper Feeder..................................................................................................................4-71
3.29 Frame L / Drive Unit .......................................................................................................7-78
3.30 Reversing Release Solenoid (MFC-8820D/8820DN, DCP-8025D/8025DN 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 ........................................................................................... 4-95
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 ...........................................................................................................5-12
3. PERIODICAL CLEANING ..................................................................................... 5-14
3.1 Cleaning the Machine Exterior .......................................................................................5-14
3.2 Cleaning the Scanner .....................................................................................................5-14
3.3 Cleaning the Printer........................................................................................................5-15
3.4 Cleaning the Drum Unit ..................................................................................................5-16
3.5 Cleaning the Scanner Window .......................................................................................5-16
3.6 Cleaning the Electrical Terminals...................................................................................5-17
4. MTBF / MTTR ....................................................................................................... 5-18
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-8820D/8820DN, DCP-8025D/8025DN) ..6-16
3.3.3 Causes & countermeasures..............................................................................................6-17