Brother IntelliFax-3550 Service Manual page 50

1. DISASSEMBLY/REASSEMBLY ....................................................................
Safety Precautions ....................................................................................
Preparation ................................................................................................ IV-3
How to Access the Object Component ......................................................
Disassembly Order Flow ...........................................................................
1.1 Top Cover ............................................................................................... IV-5
1.2 Handset Mount and Hook Switch PCB
Side Cover
1.3 Multi-purpose Sheet Feeder ..................................................................
1.4 Control Panel ASSY ..............................................................................
1.5 Panel Rear Cover and Control Panel ....................................................
1.6 Document Feed Roller ASSY and Ejection Roller ASSY ......................
1.7 Inner Cover ............................................................................................ IV-8
1.8 Scanner Frame ASSY ...........................................................................
1.9 Insulation Cover ....................................................................................
1.10 Fixing Unit, FU Lamp, and Paper Ejection Sensor Actuator ..................
1.11 Laser Unit............................................................................................... IV-15
1.12 Bottom Plate .......................................................................................... IV-16
1.13 Low-voltage Power Supply PCB ...........................................................
1.14 High-voltage Power Supply PCB and Fan 1 .........................................
1.15 Main PCB ............................................................................................... IV-19
1.16 Relay PCB ............................................................................................. IV-21
1.17 Shield Bracket and NCU PCB ASSY ....................................................
1.18 Gear Drive Unit ...................................................................................... IV-23
1.19 Duct Cover, Fan 2, and Speaker ...........................................................
1.20 Sheet Feeder Cover Sensor Actuator, Registration Sensor Actuator,
and Cover Sensor Actuator ...................................................................
1.21 Microphone
1.22 Cleaning of High-voltage Contacts and Grounding Contacts ................
1.23 Harness Routing ...................................................................................
2. LUBRICATION ................................................................................................ IV-30
CONTENTS
(for non-handset versions) ............................................................
(MFC9500 only) ...........................................................................
(for handset-equipped versions)
IV-1
IV-1
IV-3
IV-4
IV-5
IV-6
IV-6
IV-7
IV-8
IV-10
IV-12
IV-13
IV-17
IV-18
IV-22
IV-25
IV-26
IV-27
IV-28
IV-29