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CHAPTER 5 DISASSEMBLY/REASSEMBLY AND LUBRICATION

This chapter details procedures for disassembling and reassembling the machine together with

related notes. The disassembly order flow provided enables you to see at a glance the quickest

way to get to component(s) involved.

At the start of a disassembly job, you check the disassembly order flow that guides you through

a shortcut to the object components.

This chapter also covers screw tightening torques and lubrication points to which the specified

lubricants should be applied during reassembly jobs.

5.1

DISASSEMBLY/REASSEMBLY ..................................................................................5-1

n Safety Precautions....................................................................................................5-1

n Tightening Torque ....................................................................................................5-2

n Preparation...............................................................................................................5-3

n How to Access the Object Component ......................................................................5-3

n Disassembly Flowchart .............................................................................................5-4

5.1.1

Draining the Ink from the Ink Tubes -- Be sure to perform draining before

removing the head/carriage unit, ink refill ASSY or engine unit. -- .....................5-5

5.1.2

Jam Clear Cover ..............................................................................................5-6

5.1.3

Scanner Cover (Scanner Unit) with ADF & Document Cover ASSY ..................5-7

5.1.4

ADF & Document Cover ASSY.......................................................................5-12

5.1.5

Control Panel ASSY .......................................................................................5-24

5.1.6

Upper Cover...................................................................................................5-27

5.1.7

Head/Carriage Unit.........................................................................................5-28

5.1.8

Ink Refill ASSY...............................................................................................5-35

5.1.9

Media Module Cover and Main PCB ...............................................................5-36

5.1.10 LT Cover* and Side Covers (R and L).............................................................5-40

5.1.11 MJ/PS Shield Box, MJ PCB and Power Supply PCB.......................................5-42

5.1.12 Ink Absorber Box............................................................................................5-44

5.1.13 Engine Unit and Maintenance Unit..................................................................5-46

5.1.14 Components on the Engine Unit .....................................................................5-48

5.1.15 LT Chassis and LT Gear Holder ASSY (MFC5840CN)....................................5-60

5.1.16 Routing of the Harnesses and Flat Cables......................................................5-62

5.2

LUBRICATION ..........................................................................................................5-66

CONTENTS

Confidential