Brother International HL-1070 Service Manual - Page 5

Iii Disassembly And Reassembly, Iii-1, Safety Precautions, Disassembly Flow - driver

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2.2.2 Paper Registration ...II-18 2.2.3 Paper Eject ...II-19 2.3 Sensors...II-20 2.3.1 Cover Sensor...II-20 2.3.2 Toner Empty Sensor...II-20 2.4 Drum Unit...II-21 2.4.1 Photosensitive Drum...II-21 2.4.2 Primary Charger ...II-21 2.4.3 Developer Roller ...II-21 2.4.4 Transfer Roller ...II-21 2.4.5 Cleaner Roller...II-21 2.4.6 Erase Lamp ...II-21 2.5 Print Process...II-21 2.5.1 Charging ...II-21 2.5.2 Exposure Stage ...II-22 2.5.3 Developing...II-23 2.5.4 Transfer ...II-23 2.5.5 Drum Cleaning Stage II-24 2.5.6 Erasing Stage ...II-24 2.5.7 Fixing Stage...II-24 CHAPTER III DISASSEMBLY AND REASSEMBLY III-1 1. SAFETY PRECAUTIONS III-1 2. DISASSEMBLY FLOW...III-2 3. DISASSEMBLY PROCEDURE III-3 3.1 Drum Unit...III-3 3.2 Output Tray ASSY ...III-3 3.3 Top Cover ...III-4 3.4 MP Sheet Feeder 1 ASSY ...III-4 3.5 MP Sheet Feeder 2 ASSY ...III-7 3.6 Under Shoot ASSY ...III-7 3.7 SR PCB / Relay PCB ...III-9 3.8 Fixing Unit ...III-10 3.9 Scanner Unit ...III-12 3.10 Main PCB ASSY ...III-14 3.11 Base Plate ASSY ...III-15 3.12 Driver PCB ASSY ...III-16 3.13 Low-voltage Power Supply PCB ASSY III-17 3.14 High-voltage Power Supply PCB ASSY III-18 3.15 Fan Motor ASSY ...III-18 3.16 Drive Unit ...III-19 3.17 Main Motor ASSY...III-20 3.18 Gears and Solenoid ...III-21 3.19 Paper Support...III-23 3.20 Extension Support Wire ...III-23 ii

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ii
2.2.2 Paper Registration
........................................................................................................
II-18
2.2.3 Paper Eject
...................................................................................................................
II-19
2.3 Sensors
.......................................................................................................................................
II-20
2.3.1 Cover Sensor
................................................................................................................
II-20
2.3.2 Toner Empty Sensor
.....................................................................................................
II-20
2.4 Drum Unit
....................................................................................................................................
II-21
2.4.1 Photosensitive Drum
.....................................................................................................
II-21
2.4.2 Primary Charger
...........................................................................................................
II-21
2.4.3 Developer Roller
...........................................................................................................
II-21
2.4.4 Transfer Roller
..............................................................................................................
II-21
2.4.5 Cleaner Roller
...............................................................................................................
II-21
2.4.6 Erase Lamp
..................................................................................................................
II-21
2.5 Print Process
...............................................................................................................................
II-21
2.5.1 Charging
.......................................................................................................................
II-21
2.5.2 Exposure Stage
............................................................................................................
II-22
2.5.3 Developing
....................................................................................................................
II-23
2.5.4 Transfer
........................................................................................................................
II-23
2.5.5 Drum Cleaning Stage
...................................................................................................
II-24
2.5.6 Erasing Stage
...............................................................................................................
II-24
2.5.7 Fixing Stage
..................................................................................................................
II-24
CHAPTER
III DISASSEMBLY AND REASSEMBLY
......................................
III-1
1. SAFETY PRECAUTIONS
..................................................................................................
III-1
2. DISASSEMBLY FLOW
......................................................................................................
III-2
3. DISASSEMBLY PROCEDURE
.........................................................................................
III-3
3.1 Drum Unit
.....................................................................................................................................
III-3
3.2 Output Tray ASSY
.......................................................................................................................
III-3
3.3 Top Cover
....................................................................................................................................
III-4
3.4 MP Sheet Feeder 1 ASSY
...........................................................................................................
III-4
3.5 MP Sheet Feeder 2 ASSY
...........................................................................................................
III-7
3.6 Under Shoot ASSY
......................................................................................................................
III-7
3.7 SR PCB / Relay PCB
...................................................................................................................
III-9
3.8 Fixing Unit
..................................................................................................................................
III-10
3.9 Scanner Unit
..............................................................................................................................
III-12
3.10 Main PCB ASSY
......................................................................................................................
III-14
3.11 Base Plate ASSY
.....................................................................................................................
III-15
3.12 Driver PCB ASSY
....................................................................................................................
III-16
3.13 Low-voltage Power Supply PCB ASSY
...................................................................................
III-17
3.14 High-voltage Power Supply PCB ASSY
...................................................................................
III-18
3.15 Fan Motor ASSY
......................................................................................................................
III-18
3.16 Drive Unit
.................................................................................................................................
III-19
3.17 Main Motor ASSY
.....................................................................................................................
III-20
3.18 Gears and Solenoid
.................................................................................................................
III-21
3.19 Paper Support
..........................................................................................................................
III-23
3.20 Extension Support Wire
...........................................................................................................
III-23