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44871001TH Rev.6

v /

Oki Data CONFIDENTIAL

CONTENTS

4. REPLACEMENT OF PARTS .................................................4-1

4.1 Notes on replacement of parts .........................................................................4-2

4.2 Part replacement procedure ............................................................................4-4

4.2.1 Cover Side (L) ............................................................................................4-4

4.2.2 Cover Side(R) / SD Card ............................................................................ 4-5

4.2.3 Board 98M ..................................................................................................4-6

4.2.4 PWR unit ....................................................................................................4-7

4.2.5 Cover Stay(R) / Cover Stay(L) .................................................................... 4-9

4.2.6 Cover Front (Top) .....................................................................................4-10

4.2.7 SW Assy ...................................................................................................4-11

4.2.8 Scanner unit .............................................................................................4-12

4.2.8.1 Tray-assy-document / Cover-ADF-R-assy ........................................ 4-14

4.2.8.2 ADF-unit ...........................................................................................4-15

4.2.8.3 Sheet-document / Paper-weight-assy / Spring-PW-ADF ..................4-16

4.2.8.4 Hinge-assy-L / Hinge-assy-R ...........................................................4-17

4.2.8.5 Cover-ADF-F / Guide-assy-exit-sub / ADF-assy /

ADF board (MHD) ............................................................................4-18

4.2.8.6 Cover-assy-top-ADF / Guide-assy / Roller / Motor / Clutch /

Solenoid ...........................................................................................4-20

4.2.8.7 Guide-A-sub / Frame-assy-separator / Spring-separator /

Rubber-friction .................................................................................. 4-21

4.2.8.8 Cable (ADF-Rev SNS) ......................................................................4-21

4.2.8.9 Cable (ADF-Reg SNS) .....................................................................4-22

4.2.8.10 Frame-assy-OP ................................................................................4-22

4.2.8.11 Frame-OP-panel / OPE board (Except MB441/MB461/MB461+LP/

ES4161 MFP) ................................................................................... 4-23

4.2.8.12 Frame-OP-panel / OPE board (MB441/MB461/MB461+LP/

ES4161 MFP) ................................................................................... 4-24

4.2.8.13 LCD-assy ..........................................................................................4-25

4.2.8.14 Frame-assy-FB ................................................................................. 4-26

4.2.8.15 How to remove Battery (SU Board MHE) ......................................... 4-28

4.2.8.16 Frame-assy-hopping-ADF ................................................................4-29

4.2.9 Plate Stay L / Plate Assy Stay R ..............................................................4-30

4.2.10 LED Head .................................................................................................4-31

4.2.11 Frame-Assy-TR ........................................................................................4-31

4.2.12 Duplex Belt Assy ......................................................................................4-32

4.2.13 DC Motor ................................................................................................. 4-32

4.2.14 Hopping Clutch / MPT Clutch / Regist Clutch ..........................................4-34

4.2.15 HV-Board / Motor-FAN ............................................................................4-37

4.2.16 Cover Assy Stacker ..................................................................................4-38

4.2.17 Stacker Cover ........................................................................................... 4-40

4.2.18 Fuser Assy ...............................................................................................4-41

4.2.19 MPT Assy, Manual Assy ...........................................................................4-44

4.2.20 Cover Assy Rear ......................................................................................4-45

4.2.21 Guide Eject Lower Assy ...........................................................................4-48

4.2.22 Eject Motor ...............................................................................................4-49

4.2.23 Plate Side R Assy / Plate Side L Assy / Front Assy .................................4-50

4.2.24 Plate Side L Assy .....................................................................................4-51

4.2.25 Plate Side R Assy ....................................................................................4-52

4.2.26 Front Assy ................................................................................................4-53

4.2.27 Roller Feed Assy ......................................................................................4-53

4.2.28

Lever In Sensor / Lever WR Sensor / Photo Interrupter ....................................4-54

4.2.29 Paper feeding roller (Roller-Pick-Up, Roller-Feed-NOW, Roller-Assy-MPT) ..4-55

4.2.30 Frame-Assy-Retard, Spring-Retard ..........................................................4-57

4.2.31 W-LAN Board ( for MB471w only) ............................................................4-58

5. LUBRICATION POINT ...........................................................5-1

5.1 Lubrication point...............................................................................................5-2

5.1.1 Printer .........................................................................................................5-3

5.1.2 Scanner .................................................................................................... 5-11

6. MAINTENANCE MENUS .......................................................6-1

6.1 Maintenance Menu ..........................................................................................6-2

6.2 Service Bit Menu ............................................................................................ 6-10

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Oki MB461 Specifications

General

Duplex printing	Yes
Maximum resolution	2400 x 600 DPI
Time to first page (black, normal)	5 s
Print speed (black, normal quality, A4/US Letter)	33 ppm
Scan file formats	BMP, GIF, JPG, PCX, PDF, TIFF, XPS
All-in-one functions	Copy, Print, Scan
Connectivity technology	Wired
Color all-in-one functions	No
Printing colors	Black
Maximum duty cycle	- pages per month
Number of print cartridges	1
Page description languages	Epson FX, IBM ProPrinter, PCL 5e, PCL 6, SIDM
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
Time to first copy (black, normal)	11 s
Copy speed (black, normal quality, A4)	33 cpm
Scan to	USB
Scan drivers	TWAIN
Scanner type	Flatbed scanner
Grayscale levels	7
Input color depth	48 bit
Output color depth	24 bit
Scan speed (black)	37.5 ppm
Scan speed (color)	10 ppm
Image formats supported	BMP, GIF, JPG, PCX, PNG, TGA, WMF
Document formats supported	PDF
Paper input type	Paper tray
Total input capacity	250 sheets
Total output capacity	150 sheets
Maximum input capacity	781 sheets
Maximum number of input trays	2
Multi-Purpose tray input capacity	1 sheets
Auto document feeder (ADF) input capacity	50 sheets
Envelopes sizes	DL
Maximum print size	210 x 297 mm
Paper tray media types	Envelopes
Paper tray media weight	0 - 80 g/m²
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5
ISO C-series sizes (C0...C9)	C5, C6
Maximum ISO A-series paper size	A4
Display	LCD
Product color	Gray
Display resolution	320 x 128 pixels
Market positioning	Business
Direct printing	-
Standard interfaces	Ethernet, USB 2.0
Mobile printing technologies	Not supported
Supported network protocols (IPv4)	TCP/IPv4&v6, SMTP, POP3, HTTP, SNMPv1&v3, DHCP, DNS, LPR, Port9100, BOOTP, ARP, FTP, CIFS, LDAP, SLP
Sound power level (standby)	55 dB
Sound pressure level (quiet mode)	30 dB
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (off)	0.5 W
Power consumption (standby)	3 W
Power consumption (PowerSave)	14 W
Power consumption (average operating)	950 W
Storage temperature (T-T)	-10 - 43 °C
Storage relative humidity (H-H)	10 - 90 %
Mac operating systems supported	Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion
Server operating systems supported	Windows Server 2003, Windows Server 2008, Windows Server 2008 R2
Windows operating systems supported	Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64