Confidential
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.
CONTENTS
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
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