Brother HL-4140CN Service Manual page 146

DISASSEMBLY AND ASSEMBLY
This chapter describes procedures for disassembling and assembling the printer with relates notes.
The provided disassembly order flow enables you to take in the quickest way to get an involved 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 printer 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.............................................................................3-8
7. HARNESS ROUTING...............................................................................3-10
8. DISASSEMBLY FLOW.............................................................................3-21
9. DISASSEMBLY PROCEDURE ................................................................3-22
9.1 Paper Tray ................................................................................................................ 3-23
9.2 Paper Stopper........................................................................................................... 3-24
9.3 Back Cover/Back Cover Stopper Arm L/R ................................................................ 3-25
9.4 Fuser Cover .............................................................................................................. 3-28
9.5 Fuser Unit ................................................................................................................. 3-30
9.6 Side Cover L/Access Cover...................................................................................... 3-33
9.7 Side Cover R ASSY.................................................................................................. 3-36
9.8 Duplex Feed ASSY................................................................................................... 3-38
9.9 MP Cover ASSY/MP Paper Guide ASSY ................................................................. 3-39
9.10 MP Link L/R ............................................................................................................ 3-42
9.11 Front Cover Arm L/R............................................................................................... 3-43
9.12 Front Cover Release Button/Front Cover Release Button Spring .......................... 3-47
9.13 Top Cover ASSY..................................................................................................... 3-49
9.14 Wireless LAN PCB ................................................................................................. 3-52
CHAPTER 3
CONTENTS
Confidential