Brother HL-5250DN series Service-Handbuch - Seite 4

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Brother HL-5250DN series Service-Handbuch
2.4
3.
MECHANICS .......................................................................................................... 2-7
3.1
3.2
3.3
3.4
3.5
3.6
3.7
CHAPTER 3 PERIODIC MAINTENANCE ............................................... 3-1
1.
CONSUMABLE PARTS .......................................................................................... 3-1
1.1
1.2
2.
PERIODICAL REPLACEMENT PARTS ................................................................ 3-12
2.1
2.2
fineline6
2.3.9 Reset circuit ........................................................................................................................2-5
2.3.10 Panel I/O .............................................................................................................................2-5
2.3.11 Video I/O .............................................................................................................................2-5
2.3.12 Power supply.......................................................................................................................2-5
2.3.13 Wireless LAN ......................................................................................................................2-5
Power Supply.................................................................................................................... 2-6
2.4.1 Low-voltage power supply...................................................................................................2-6
2.4.2 High-voltage power supply ..................................................................................................2-6
Overview of Printing Mechanism ...................................................................................... 2-7
Overview of Gear.............................................................................................................. 2-8
Paper Transfer ................................................................................................................. 2-9
3.3.1 Paper supply .......................................................................................................................2-9
3.3.2 Paper registration..............................................................................................................2-11
3.3.3 Drum unit...........................................................................................................................2-11
3.3.4 Developing ........................................................................................................................2-12
3.3.5 Fixing stage .......................................................................................................................2-13
3.3.6 Paper eject ........................................................................................................................2-14
3.3.7 Duplex printing (HL-5250DN/5270DN/5280DW)...............................................................2-15
3.3.8 Paper feeding from the MP tray ........................................................................................2-16
3.3.9 LT tray ...............................................................................................................................2-16
Toner Cartridge .............................................................................................................. 2-17
3.4.1 Toner life end mode ..........................................................................................................2-17
3.4.2 New toner detection mechanism .......................................................................................2-19
3.4.3 Counter reset during indication of "Toner Life End" ..........................................................2-20
Print Process .................................................................................................................. 2-21
3.5.1 Charging............................................................................................................................2-21
3.5.2 Exposure stage .................................................................................................................2-21
3.5.3 Transfer .............................................................................................................................2-22
Sensors .......................................................................................................................... 2-23
Heat Control of Fuser Unit.............................................................................................. 2-24
Toner Cartridge ................................................................................................................ 3-1
Drum Unit ......................................................................................................................... 3-7
Periodical Replacement Parts ........................................................................................ 3-12
Procedures to Replace Periodical Replacement Parts .................................................. 3-13
2.2.1 Fuser unit and laser unit....................................................................................................3-13
2.2.2 Paper feeding kit for tray 1, 2, 3 ........................................................................................3-35
2.2.3 Paper feeding kit for MP tray.............................................................................................3-43
HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
iii
Confidential