Brother HL-2030 Service Manual page 6

2.3 Drum Unit ....................................................................................................................... 3-25
2.3.1 Exposure drum ..................................................................................................................3-25
2.3.2 Primary charger.................................................................................................................3-25
2.3.3 Transfer roller ....................................................................................................................3-25
2.3.4 Cleaner..............................................................................................................................3-25
2.4 Toner Cartridge .............................................................................................................. 3-26
2.4.1 Toner life end mode ..........................................................................................................3-26
2.4.2 New toner detection mechanism .......................................................................................3-27
2.4.3 Counter reset during indication of "Toner Life End" ..........................................................3-28
2.5 Print Process .................................................................................................................. 3-29
2.5.1 Charging............................................................................................................................3-29
2.5.2 Exposure stage .................................................................................................................3-29
2.5.3 Developing ........................................................................................................................3-30
2.5.4 Transfer .............................................................................................................................3-31
2.5.5 Fixing stage .......................................................................................................................3-31
2.6 Sensors .......................................................................................................................... 3-32
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY .............................. 4-1
1. SAFETY PRECAUTIONS ....................................................................................... 4-1
2. DISASSEMBLY FLOW ........................................................................................... 4-2
3. DISASSEMBLY PROCEDURE ............................................................................... 4-3
3.1 AC Cord............................................................................................................................ 4-3
3.2 Drum/Tone ASSY ............................................................................................................. 4-3
3.3 Paper Tray........................................................................................................................ 4-4
3.4 Rear Cover ....................................................................................................................... 4-5
3.5 Rear Chute Cover............................................................................................................. 4-6
3.6 Side Cover L..................................................................................................................... 4-7
3.7 Side Cover R .................................................................................................................... 4-7
3.8 Top Cover / Paper Stopper............................................................................................... 4-8
3.9 Front Cover..................................................................................................................... 4-10
3.10 Pickup Roller Holder ASSY ............................................................................................ 4-11
3.11 Fixing Unit....................................................................................................................... 4-15
3.12 High-Voltage PS PCB ASSY .......................................................................................... 4-21
3.13 Main PCB ....................................................................................................................... 4-22
3.14 SW Key / Panel PCB ...................................................................................................... 4-24
3.15 PS PCB Unit ................................................................................................................... 4-25
3.16 Laser Unit ....................................................................................................................... 4-28
3.17 Sub Chute ASSY ............................................................................................................ 4-30
3.18 Link Lever ....................................................................................................................... 4-31
3.19 Tail Edge Actuator .......................................................................................................... 4-32
3.20 Regist Front Actuator / Regist Front Spring.................................................................... 4-32
3.21 Regist Sensor PCB ASSY .............................................................................................. 4-33
3.22 Regist Rear Actuator / Regist Rear Spring..................................................................... 4-33
3.23 Fan Motor 60 Unit........................................................................................................... 4-34
3.24 Toner LED PCB ASSY / LED Holder.............................................................................. 4-35
3.25 New Toner Actuator / New Toner Actuator Spring ......................................................... 4-36
3.26 New Toner Sensor.......................................................................................................... 4-36
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