Brother HL-5030 Service Manual page 5

TABLE OF CONTENTS
2.2.3 Paper eject........................................................................................................................ 3-22
2.3 Sensors...........................................................................................................................3-23
2.3.1 Cover sensors................................................................................................................... 3-23
2.3.2 Toner sensors ................................................................................................................... 3-23
2.3.3 Cassette sensor / Paper empty sensor (HL-5040/5050/5070N only)................................ 3-24
2.3.4 Paper eject sensor ............................................................................................................ 3-24
2.3.5 MP PE sensor ................................................................................................................... 3-25
2.4 Drum Unit........................................................................................................................3-26
2.4.1 Photosensitive drum ......................................................................................................... 3-26
2.4.2 Primary charger ................................................................................................................ 3-26
2.4.3 Transfer roller.................................................................................................................... 3-26
2.4.4 Cleaner ............................................................................................................................. 3-26
2.5 Toner Cartridge...............................................................................................................3-26
2.6 Print Process ..................................................................................................................3-26
2.6.1 Charging ........................................................................................................................... 3-26
2.6.2 Exposure stage ................................................................................................................. 3-27
2.6.3 Developing ........................................................................................................................ 3-28
2.6.4 Transfer............................................................................................................................. 3-28
2.6.5 Fixing stage....................................................................................................................... 3-29
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 Unit..........................................................................................................................4-3
3.3 Paper Tray
3.4 Access Cover.................................................................................................................. 4-14
3.5 Rear Cover C .................................................................................................................. 4-14
3.6 Outer Chute (for HL-5030/5040 only) ............................................................................. 4-15
3.7 Rear Cover MP ASSY /Outer Chute MP ASSY (for HL-5050/5070N only) ................... 4-16
3.8 Rear Cover L/R ............................................................................................................... 4-17
3.9 Side Cover L/R ............................................................................................................... 4-18
3.10 Top Cover ....................................................................................................................... 4-19
3.11 Front Cover ASSY (for HL-5030/5040 only) ................................................................... 4-22
3.12 MP Unit (for HL-5050/5070N only) ................................................................................. 4-23
3.13 Fixing Unit ....................................................................................................................... 4-29
3.14 Laser Unit ....................................................................................................................... 4-38
3.15 Main PCB ........................................................................................................................ 4-40
3.16 Base Plate/ LV Insulation Sheet ..................................................................................... 4-42
3.17 Engine PCB .................................................................................................................... 4-43
3.18 High-voltage PS PCB ASSY ........................................................................................... 4-44
3.19 Low-voltage PS PCB ASSY ............................................................................................ 4-45
3.20 Paper Feeder .................................................................................................................. 4-46
3.21 Frame L/ Drive Unit......................................................................................................... 4-54
3.22 Fan Motor 60 Unit LV/ Fan Motor 60 Unit ....................................................................... 4-58
3.23 Frame R .......................................................................................................................... 4-59
4. PACKING .............................................................................................................. 4-61
................................................................................................................. 4-4
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