Brother MFC620CN Service Manual page 137

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 target components.
This chapter also covers screw tightening torques and lubrication points to which the specified
lubricants should be applied during reassembly jobs.
Illustrations and descriptions in this chapter are based on the MFC210C.
5.1 DISASSEMBLY/REASSEMBLY ..................................................................................... 5-1
Safety Precautions ....................................................................................................... 5-1
Tightening Torque ....................................................................................................... 5-2
Preparation .................................................................................................................. 5-3
How to Access the Target Component ....................................................................... 5-3
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 .................................................................................................. 5-7
5.1.3 Document Cover (MFC410CN/215C/210C/210C New and
DCP310CN/115C/117C/110C/110C New) .......................................................... 5-8
5.1.4 Scanner Cover (Scanner Unit)............................................................................. 5-9
5.1.5 ADF & Document Cover ASSY (MFC620CN/620CN New/425CN/420CN/420CN
New/DCP120C and FAX2440C/2440C New).................................................... 5-15
5.1.6 Control Panel ASSY .......................................................................................... 5-24
5.1.7 Upper Cover....................................................................................................... 5-26
5.1.8 Hook Switch Actuator and Hook Switch PCB (MFC620CN/620CN New U.S.A./
Canadian models and FAX2440C/2440C New) ................................................ 5-27
5.1.9 Head/Carriage Unit ............................................................................................ 5-29
5.1.9.1 Old Type of Head/Carriage Unit ................................................................ 5-29
5.1.9.2 New Type of Head/Carriage Unit............................................................... 5-37
5.1.10 Backup Battery (MFC620CN/620CN New/FAX2440C/2440C New)................. 5-45
5.1.11 Ink Refill ASSY................................................................................................... 5-47
5.1.12 Media Module Cover and Main PCB ................................................................. 5-48
CONTENTS
Confidential