CHAPTER 3 DISASSEMBLY AND ASSEMBLY .....................................

3-1

1. SAFETY PRECAUTIONS ...........................................................................................

3-1

2. PACKING....................................................................................................................

3-2

3. SCREW TORQUE LIST..............................................................................................

3-3

4. LUBRICATION............................................................................................................

3-7

5. OVERVIEW OF GEARS ...........................................................................................

3-15

6. HARNESS ROUTING ...............................................................................................

3-17

7. DISASSEMBLY FLOW .............................................................................................

3-31

8. DISASSEMBLY PROCEDURE.................................................................................

3-32

8.1

Paper Tray ........................................................................................................................

3-32

8.2

DX Feed ASSY .................................................................................................................

3-34

8.3

MP Cover ASSY/ MP Paper Guide ASSY........................................................................

3-34

8.4

MP Lift Arm 2/ MP Roller Holder ASSY............................................................................

3-37

8.5

 

Fuser Unit/ Toner Filter Frame ASSY...............................................................................

3-40

8.6

Back Cover Upper ............................................................................................................

3-42

8.7

Paper Eject ASSY DX.......................................................................................................

3-43

8.8

Back Cover ASSY.............................................................................................................

3-45

8.9

Paper Guide/ HV TR Top Cover.......................................................................................

3-46

8.10

Transfer HVPS PCB Unit................................................................................................

3-47

8.11

Registration-mark Sensor PCB ASSY 1, 2/ Density Sensor/ Registration Relay PCB

 

 

ASSY/ Transfer HVPS PCB ASSY.................................................................................

3-48

8.12

Side Cover L ASSY ........................................................................................................

3-54

8.13

Side Plate LB ..................................................................................................................

3-55

8.14

Drum Unit Fan (OPC) .....................................................................................................

3-56

8.15

Side Cover R ASSY........................................................................................................

3-57

8.16

Paper Stopper.................................................................................................................

3-58

8.17

Driver PCB ASSY ...........................................................................................................

3-59

8.18

Pull arm L, R/ Hinge Protection Cover ASSY.................................................................

3-61

8.19

ADF Unit .........................................................................................................................

3-65

8.20

Panel Unit .......................................................................................................................

3-99

8.21

Document Scanner Unit ...............................................................................................

3-104

8.22

NCU PCB ASSY (MFC-9840CDW only) ......................................................................

3-114

8.23

Battery ASSY................................................................................................................

3-117

8.24

Joint Cover ASSY .........................................................................................................

3-118

8.25

Speaker ASSY..............................................................................................................

3-124

8.26

Roller Holder ASSY ......................................................................................................

3-126

8.27

Paper Feed Frame Unit/ T1 PE/Edge Sensor PCB ASSY...........................................

3-127

8.28

Belt Cleaner Release Sensor PCB ASSY ....................................................................

3-135

8.29

THM/HUM Sensor Holder ASSY ..................................................................................

3-136

8.30

Release Rack ...............................................................................................................

3-138

 

 

iv

Confidential