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Brother HL-5440D Service Manual Page 118

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This chapter describes procedures for disassembling and reassembling the machine with
relates notes.
The provided disassembly order flow enables you to take in the disassembly procedure of
related part at a glance.
At the start of disassembling, you can check the disassembly order flow which guides you
through a shortcut to get to the part.
This chapter also covers screw tightening torques and lubrication points where the specified
lubrication should be applied when the machine is assembled.
1. SAFETY PRECAUTIONS ............................................................................................. 3-1
2. PACKING ......................................................................................................................3-2
3. SCREW CATALOGUE .................................................................................................. 3-3
4. SCREW TORQUE LIST ................................................................................................ 3-4
5. LUBRICATION .............................................................................................................. 3-6
6. OVERVIEW OF GEARS................................................................................................ 3-7
7. HARNESS ROUTING.................................................................................................... 3-9
8. DISASSEMBLY FLOW CHART .................................................................................. 3-14
9. DISASSEMBLY PROCEDURE ................................................................................... 3-15
9.1
Preparation ............................................................................................................... 3-15
9.2
Paper tray 1 .............................................................................................................. 3-16
9.3
Back cover / Outer chute .......................................................................................... 3-18
9.4
Fuser cover ............................................................................................................... 3-19
9.5
MP cover ASSY ........................................................................................................ 3-20
9.6
Front cover ASSY ..................................................................................................... 3-21
9.7
Side cover L / Access cover...................................................................................... 3-22
9.8
Side cover R ............................................................................................................. 3-23
9.9
Top cover ASSY........................................................................................................ 3-24
9.10 Control panel............................................................................................................. 3-26
9.11 Paper stack lever ...................................................................................................... 3-29
9.12 Wireless LAN PCB (Wireless Network model only) .................................................. 3-30
9.13 Fuser unit .................................................................................................................. 3-31
9.14 Main PCB ASSY ....................................................................................................... 3-34
9.15 Laser unit .................................................................................................................. 3-36
9.16 Low-voltage power supply PCB ASSY ..................................................................... 3-37
9.17 Toner LED PCB ASSY .............................................................................................. 3-40
9.18 Main fan .................................................................................................................... 3-42
9.19 Air duct / Filter........................................................................................................... 3-44
9.20 Relay front PCB ASSY.............................................................................................. 3-45
CONTENTS
Confidential

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