Oki MC873dn User manual

MC873dn / ES8473 MFP
Maintenance Manual
041315A

Copyright Information
Copyright © 2015 by Oki Data. All Rights Reserved
Disclaimer
Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-
date. The manufacturer assumes no responsibility for the results of errors beyond its control. The
manufacturer also cannot guarantee that changes in software and equipment made by other manufacturers and
referred to in this guide will not affect the applicability of the information in it. Mention of software products
manufactured by other companies does not necessarily constitute endorsement by the manufacturer.
While all reasonable efforts have been made to make this document as accurate and helpful as possible, we
make no warranty of any kind, expressed or implied, as to the accuracy or completeness of the information
contained herein.
The most up-to-date drivers and manuals are available from the web site:
http://www.okiprintingsolutions.com

45850101TH Rev.1 iii /
Oki Data CONFIDENTIAL
This manual provides an overview of method for maintaining the MC853/MC873/ES8453/
ES8473.
This manual is intended for maintenance staff. For more detail informations about how to
operate these apparatus, please refer to each of these User 's manuals.
For the description of principle about these apparatus, refer to the document written in the
table of the Related drawings on the cover of this document.
Note! • Manual may be revised and updated at any time without notice.
• Unexpected mistakes may exist in the manual.
OKI will not assume any responsibility whatsoever for damage to the
equipmentrepaired/adjusted/changed by the user etc with this manual.
• The parts used for this apparatus may be damaged when handling
inappropriately. We strongly recommend maintaining these apparatus by our
registration maintenance staff.
• Please operate the machine after removing static electricity.
PREFACE
PREFACE
Risk of explosion if battery is replaced by an incorrect type.
Battery of the printer need not to be replaced. Do not touch the
battery.
Replace the whole board to replace the Scanner board (Board-6SU).
In the case of replacing batteries at board repairs, replace with the
specified type ones. Installation of another type batteries may result in
explosion.
Caution for used batteries are as follows; do not recharge, force open,
heat or dispose of in fire.

45850101TH Rev.1 iv /
Oki Data CONFIDENTIAL
CONTENTS
CONTENTS
1. CONFIGURATION .................................................................1-1
1.1 System configuration ......................................................................................1-2
1.2 Structure of MFP .............................................................................................1-4
1.3 Offer of Options ...............................................................................................1-5
1.4 Specifications ..................................................................................................1-6
1.5 Interface specifications .................................................................................1-16
1.5.1 USB Interface Specification......................................................................1-16
1.5.1.1 Outline of USB Interface...................................................................1-16
1.5.1.2 USB Interface Connector and Cable ................................................1-16
1.5.1.3 USB Interface Signal ........................................................................1-16
1.5.2 Network Interface Specification................................................................1-17
1.5.2.1 Outline of Network Interface.............................................................1-17
1.5.2.2 Network Interface Connector and Cable ..........................................1-17
1.5.2.3 Network Interface Signal ..................................................................1-17
1.5.3 Telephone Line Interface Specification.....................................................1-18
1.5.3.1 Outline of telephone Line Interface ..................................................1-18
1.5.3.2 Telephone Line Interface Connector and Cable ...............................1-18
1.5.3.3 Telephone Line Interface signal........................................................1-18
1.5.4 USB Host Interface...................................................................................1-18
1.5.4.1 Outline of USB Host Interface ..........................................................1-18
1.5.4.2 USB Host Interface Connector .........................................................1-18
1.5.4.3 USB Host Interface Signal................................................................1-18
1.5.5 Wireless LAN Interface.............................................................................1-19
1.5.5.1 Outline of Wireless LAN ......................................................................1-19
2. TROUBLESHOOTING PROCEDURES ................................2-1
2.1 Precautions prior to repair ...............................................................................2-2
2.2 Items to be checked prior to taking action on abnormal images......................2-2
2.3 Precautions when taking action on abnormal images .....................................2-2
2.4 Preparations for troubleshooting......................................................................2-2
2.5 Troubleshooting method...................................................................................2-3
2.5.1 Panel messages list ...................................................................................2-3
2.5.2 Inspection List ..........................................................................................2-29
2.5.3 Fax Error List............................................................................................2-36
2.5.4 Email/Internet FAX/FAX Server Error List ................................................2-39
2.5.5 Preparing for troubleshooting...................................................................2-40
2.5.6 Troubleshooting the abnormal images .....................................................2-73
2.5.7 Response after Flash compulsive initialization.........................................2-80
2.5.8 Copy Image Abnormality Error Troubleshooting.......................................2-80
2.5.9 Network Troubleshooting..........................................................................2-81
2.5.10 Wireless Troubleshooting .........................................................................2-82
2.6 Fuse Checking ...............................................................................................2-83
2.7 Paper cassette switches and paper size correlation table .............................2-84
3. MAINTENANCE MENUS.......................................................3-1
3.1 Maintenance Menu ..........................................................................................3-2
3.2 Service Bit Menu ...........................................................................................3-12
3.3 Maintenance Utility ........................................................................................3-13
3.4 Self-diagnostic mode ....................................................................................3-14
3.4.1 Operator panel ........................................................................................3-14
3.4.2 Normal self-diagnostic mode (Level 1) ....................................................3-16
3.4.2.1 Entering self-diagnostic mode (level 1) ............................................3-16
3.4.2.2 Exiting self-diagnostic mode.............................................................3-16
3.4.3 Switch scan test ......................................................................................3-17
3.4.4 Motor and clutch test ...............................................................................3-20
3.4.5 Test print...................................................................................................3-22
3.4.6 Color registration adjustment test.............................................................3-26
3.4.7 Density adjustment test............................................................................3-30
3.4.8 Consumable counter display ....................................................................3-33
3.4.9 Print counter display.................................................................................3-34

45850101TH Rev.1 v /
Oki Data CONFIDENTIAL
CONTENTS
3.4.10 Factory-Shipping mode switching ............................................................3-34
3.4.11 Self-diagnostic function setting ................................................................3-35
3.4.12 LED head serial number display ..............................................................3-36
3.4.13 Drum Manual Cleaning ............................................................................3-36
3.4.14 Functions of buttons after power-on.........................................................3-37
3.5 Setup after part replacement ........................................................................3-38
3.5.1 Notes on CU/ PU board replacement.......................................................3-38
3.5.2 Notes on HDD replacement .....................................................................3-40
3.6 Manual density adjustment setting.................................................................3-41
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 Belt unit ......................................................................................................4-4
4.2.2 Fuser unit ...................................................................................................4-5
4.2.3 Cover side-L-upper / Cover side-L .............................................................4-6
4.2.4 Cover side-R-upper / Cover side-R ............................................................4-6
4.2.5 Rear cover Assy..........................................................................................4-7
4.2.6 Duplex Unit.................................................................................................4-8
4.2.7 LED Assy. / Spring-Head............................................................................4-9
4.2.8 Main board (board Assy-6CU) / Board memory.......................................4-10
4.2.9 HDD Assy / Plate Assy.-Sensor / Stapler Unit..........................................4-12
4.2.10 Scanner Unit / Cover-Hinge(L) / Cover-Hinge(R).....................................4-13
4.2.10.1 Tray-Assy-Document/Cover-ADF-R..................................................4-15
4.2.10.2 Tray-Assy-Document ........................................................................4-16
4.2.10.3 Damper Assy-L/R .............................................................................4-16
4.2.10.4 ADF-unit / CONN Cord / Film-Guard(L) / Film-Guard(R) .................4-17
4.2.10.5 Sheet-document/Paper-weight-Assy/Spring-PW-ADF .....................4-19
4.2.10.6 Hinge-Assy-L / Hinge-Assy-R...........................................................4-20
4.2.10.7 ADF-Assy .........................................................................................4-21
4.2.10.8 Guide-Retard / Cover-Assy-Top-ADF / Motor /CONN Coard / Clutch /
Photo-sensor....................................................................................4-22
4.2.10.9 Frame Assy.-Hopping(ADF)..............................................................4-23
4.2.10.10 Guide Assy.-Top / Board Assy.-6JC ................................................4-24
4.2.10.11 Guide-Assy-Retard .........................................................................4-25
4.2.10.12 Flatbed-Unit ....................................................................................4-25
4.2.10.13 Frame-assy-FB ...............................................................................4-26
4.2.11 Frame-Assy.-OP .......................................................................................4-28
4.2.12 2bin Assy. / Guide Assy.-2Bin / Stacker Assy.-2Bin ..................................4-29
4.2.13 Top cover Assy..........................................................................................4-31
4.2.14 Cable-Assy-Head / Lever-SNS / Photo Sensor ........................................4-33
4.2.15 Plate-Stay(L) ............................................................................................4-35
4.2.16 Plate-Stay(R) / Plate-Board-R-Assy / Plate-Support(Stay) ......................4-35
4.2.17 Front cover Assy.......................................................................................4-37
4.2.18 Guide Assy.-eject .....................................................................................4-38
4.2.19 Post-fuser-lock..........................................................................................4-38
4.2.20 Relay board (P6Z) / contact Assy. / Sensor Assy. Fuser-A.......................4-39
4.2.21 High-voltage power supply board.............................................................4-42
4.2.22 Frame Assy.-Front ....................................................................................4-43
4.2.23 Roller Assy.-registration ...........................................................................4-45
4.2.24 Roller-feed, roller-pickup, frame Assy.-pickup,and holder sensor Assy. ...4-46
4.2.25 Low-voltage power supply Assy................................................................4-48
4.2.26 Motor Assy.-belt and motor Assy-ID.........................................................4-50
4.2.27 Motor DC-FU (fuser motor) / Plate cover FU............................................4-52
4.2.28
Side-R Assy. and side-L Assy............................................................................4-53
4.2.29 Feed rollers (Tray 1/2/3/4)...............................................................................4-56
4.2.30 Paper feed rollers (MPT pick-up roller/MPT feed roller/MPT retard roller)4-58
4.2.31 Fuser Connector ......................................................................................4-60
4.2.32 Guide Assy.-Side-L / Rack-L ....................................................................4-61
4.2.33 Guide Assy.-Side-R / Rack-R ...................................................................4-61
4.2.34 Cover-FaceUP-B ......................................................................................4-62
4.3 Portions Lubricated ........................................................................................4-63

45850101TH Rev.1 vi /
Oki Data CONFIDENTIAL
5. REGULAR MAINTENANCE ..................................................5-1
5.1 Cleaning...........................................................................................................5-2
5.2 Cleaning of LED lens array ..............................................................................5-3
5.3 Cleaning the Feed rollers and the Retard roller ...............................................5-5
5.4 Cleaning the MPT Feed rollers ........................................................................5-7
5.5 Cleaning Rollers in the ADF.............................................................................5-9
5.6 Cleaning the rollers inside of the ADF ...........................................................5-11
5.7 Cleaning the Document Glass .......................................................................5-12
6. CONNECTION DIAGRAMS ..................................................6-1
6.1 Connection diagram.........................................................................................6-2
6.2 Board Layout....................................................................................................6-4
6.3 Resistance value............................................................................................6-15
6.4 Firmware Information.....................................................................................6-20
6.4.1 Maintenance board indication stamp .......................................................6-20

Oki Data CONFIDENTIAL
1.
CONFIGURATION
1.1 System configuration ...................................................................1-2
1.2 Structure of MFP .........................................................................1-4
1.3 Offer of Options ...........................................................................1-5
1.4 Specifications ..............................................................................1-6
1.5 Interface specifications ..............................................................1-16

AMP3P AMP3P
AMP3P
AMP4P
AMP12P
9715S-
12Z02
AMP4P
AMP5P
AMP6PAMP5P
AMP2P
AMP12P
AMP3P AMP3P
AMP7P
JST6P
AMP11P
MFP potision
IN sensor
HOP sensor
Paper end sensor
Paper size switch
IN sensor
Bottom sensor
Front sensor
Rear sensor
9715S-
11Z02
AMP4P
AMP3P
AMP6P
SNS03SNS12
CL1FAN
MOTOR
TH
AMP3P
AMP12P
MAIN1
AMP2PAMP2P
AMP3P
9715B-
12Z02
AMP13P
MAIN2MAIN1
CL1
MOTOR
AMP12P
AMP2P
Duplex FAN
Separator solenoidHopping clutch
Feed clutch
Duplex clutch
JST3P
AMP12P
AMP11P
9715B-
11Z02
JST24P AMP5P
AMP5P
AMP3P
AMP6PAMP3P JST5P
FSNS
PUIF
RELAY
Scanner <- ->Printer
MPT PE
PE_HOP
WR sensor
IN1 sensor
IN2 sensor
JST5P
FSNS
SNSS
SNSS
AMP14P
MOTERCL
OPTION PSIZE IDMFAN
SNS03SNS12 PSZ
CL2
SATA
POWERSATAIF STPEXIT2FACEUP WLAN
WLAN
Module
Face up cover
open close detect
switch
EXIT2
sensor
Offline
stapler
Motor cooling
FAN
Paper size
switch
To 2nd Tray
To MFP or upper tray
To under tray
To Duplex Unit
Front Assy <--> Printer
HOPCLDCID DCHEAT SIDEFAN RFID HVOLTB21F
HVOLT
CL1
SNSIFMOTIFPM REV
FAX
FAX
SETCOV
Paper route
setting Solenoid
Stacker full sensor
Cover open sensor
SpeakerOPE
RTC
FUSERIN
RCR LCR
DENS
SOL
BELTFAN
POWFAN
EXITFUSER
CUIF
SUPOW
SCN OP SUPOWSUIF
OPE
Speaker
ID UP/DOWN
sensor
FFC6P
AMP4P
JST9P
JST9P
AMP2P JST8P
TonerLow
sensor TonerLow
sensor TonerLow
sensor TonerLow
sensor
AMP3P
JST8P
AMP4P
FFC30P
FFC30P
JST2P
JST2P
JST2PJST2P
K2 Y2 M2 C2
Cover Open switch
Fuser FAN1
Inside temperature thermistor
FFC10P
FFC10P
AMP6P
AMP3PAMP3P
JST6PJST7P
AMP12P
JST4
P
JST24P
AC
9715B-
12Z02
K-HEAD
Y-HEAD
M-HEAD
C-HEAD
FFC
24P
FFC
24P
FFC
24P
FFC
24P
FFC
24P
FFC
24P
FFC
24P
FFC
24P
JST4P
JST3P
FFC13P
FFC13P
AMP4PJST3P
AMP3P relay
Hopping CL
TOP cover
open switch
WR sensor board
(Board-RSG)
MPT paper end sensor
Paper end sensor
HOP sensor board
(Board-HSC)
Duplex Unit 2nd(3rd/4th)Tray
Environment
sensor board
(Board-8TH)
ID motor(DC)
Fuser motor(DC)
Belt motor
Hopping motor
Discharging light Board-P6D
Discharging light Board-P6D
Discharging light Board-P6D
Discharging light Board-P6D
MPT CL
Reg CL
ID UpDown CL
JST3P
JST24P
POWER
JST2P
LAN
AMP2P
AMP3P
HOP sensor
JST3P
FFC4P
FFC4P
AMP4P
AMP3P
FFC4P
FFC4P
MOLEX5P
MOLEX5P
Fuser release sensor Exit sensor
Shutter solenoid
Belt FAN
Fuser IN sensor
Color registration
sensor board
(Board-PRC)
Color Density sensor
JST3P relay
JST3P
AMP2P
JST8P
Core
FFC6P
AMP2P relay
AMP2P relay
JST2P
AMP2P
AMP3P
Low voltage
FAN
USB MEM
Core
USB
DEV
FFC6P FFC6P
AC inlet
Core
JST14P
FFC50P
JST14P
FFC50P
FFC24P
AMP8P
USB
HUB
IC_CRAD
FRONT
USB
Extension cable
IC card
reader
SATA I/F
GLAN
PHY
FFC22P
HOST USB
2Bin Unit
JST2P
JST11
JST10
AMP8
2bin LED board
(Board-1LD)
Paper detect sensor
Scanner open switch
JST2P
AMP3PJST2P
RFID
Board-POL
RFID R/W
CU/PU board
(Board-6CU)
Toner sensor board
(Board-TSA)
Fuser right side FAN
High-Voltage
Power board
(Board-EHV)
Low-Voltage Power board
(1H609WA)
CD2
PC I/F
HDD
DDR2
DIMM(1GB)
DDR2
(128MB)x2
2bin relay board
(Board-7RL) Scanner board
(Board-6SU)
FAX board
(Board-FXS)
Relay board
(Board-P6Z)
Fuser Unit
7 inch OPE
BIN1 Stacker Full sensor
Core
Core
Duplex unit board
(Board-GOH-1)
2nd(3rd/4th)Tray unit board
(Board-GOH-2)
Oki Data CONFIDENTIAL
45850101TH Rev.1 1-2
1. CONFIGURATION
1.1 System configuration
System Configurations of the MFP Unit.
The system configuration of this product is shown in
Figure 1-1
Figure 1-1-1 (Printing Section side)

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-3
1. CONFIGURATION
Figure 1-1-2 (Scanning Section side)
USB MEM
IC_CARD
FDCL
(AMP 2P)
AMP 2P
Feed
Clutch Regist
Clutch
AMP 2P
Document width detect
1
Document width detect
2
Document width detect
3
RGCL
(AMP 2P)
(AMP 3P)
REG
DFS TX
SCN
SETCOV
HOP
PSIZLDFSRX
PSIZEW
REV
ADFMOT
SUIF (JST 34P)
ADF relay board
(Board-6RL)
(AMP 6P)
AMP 6P
AMP 3P
AMP 3P
AMP 3P
AMP 3P AMP 3P
Regist sensor
Scan sensor
Reverce sensor
Document set
ADF top cover open close detect
(AMP 8P)
(JST 4P)
(JST 7P)
JST 7P
(JST 6P)
JST 6P
JST 5P
(AMP 5P)
AMP 5P
JST 5P
DFSRX
(AMP 4P)
(JST 5P)
ADFWS
JST 6P
JST 6P JST 6P
Document double
feed sensor board (Tx)
(Board-6JC)
Document double feed
sensor board (Rx)
(Board-6JD)
ADF paper width sensor board
(Board-6WB)
JST 6P
(JST 3P)
JST 4P
AMP 3P
AMP 3P AMP 3P
Hopping sensor
Document length detect1 Document length detect2
JST 34P
DFSTX
JST 3P
JST 3P
AMP 3P AMP 3P
AMP 3P
Relay connector
JST 26p
(JST 26p)
Flatbed
motor
ADF feed
motor
ADF
hopping
motor
Scanner board
(Board-6SU)
Core
AMP 4P
AMP 3P AMP 3P
AMP 3P
AMP 3P
(AMP 3P)(JST 3P) (JST 4P)
(AMP 3P)
AMP 3P
AMP 3P
AMP 3P
(JST 3P)
JST 3P
(JST 8P)
ADFM
ADF_SU FBSOPN_R
ADF_OPEN_R sensor
Home position sensor
JST 4PJST 3P
PSIZ1 PSIZ2
OPN_F
7INCHIF
FBM
FAXIF
SPK
JST 2P
FFC24P
(JST 2P)
CN3
Core
FAX board
(Board-FXS)
Speaker
POWER_IN CD2_CUIF
To CU/PU board
FFC 50P
CIS1
CIS1
CIS
(JST 14P)
JST 14P
FFC50P
Core
Core
Core
Core
JST 14P
Panel board
(Board-TP1)
FB Unit ADF Unit
7-inch tauch Panel
7-inch tauch Panel
Switch board
(Board-THS)
(IC_Card reader)
(USB memory)
FFC 22P
FFC 22P
FFC 40P
ADF Open F sensor Document detect sensor1
Document detect sensor2
JST 5p AMP 4P
Tube Tube
JST 8p
Core

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-4
1. CONFIGURATION
1.2 Structure of MFP
The insides of multi function printers are composed of the following parts.
• Scanner part
• Electronic photography process part
• Paper path
• Duplex part
• 2bin part
• Control part (CU part / PU part )
• Power supply parts (high voltage part/low voltage part)
Figure 1-2 shows the composition of the MFP.
Figure 1-2
Ⓑ
Ⓐ
Ⓐ
Ⓑ

Oki Data CONFIDENTIAL 1. CONFIGURATION
45850101TH Rev.1 1-5
1.3 Offer of Options
This product can be installed with the following option.
* Check the usable option unit at each setting locations, because those are
different according to the sales location.
(1) Additionanl Tray
(1-1) Additionanl Tray Unit (max mountable number: 3)
(1-2) Caster Base
(1-3) Cabinet
*The assembling pattern of the Additional Tray, the caster base and the
cabinet should be as the following table.
No.
Assemblable pattern (*: essential for to assemble) Notes
Additional Tray Caster Base Cabinet
2nd-Tray 3rd-Tray 4th-Tray
1
2
3
4
(2) Wireless LAN module
Note! Refer to a set-up guide, that is packed together with the Wireless LAN module.

Oki Data CONFIDENTIAL 1. CONFIGURATION
45850101TH Rev.1 1-6
1.4 Specifications
Print specifications
Item MC853/ES8453 MC873/ES8473
Segment Small working Group
Print speed (simplex) A4 / Letter 23ppm 35ppm
Print speed (duplex) A4 / Letter 19ppm 27ppm
Print Width A3
Time to First Print 14 sec. 9.5 sec.
Warm-up time from power on 35 sec. or less (w/o calibrations)
Recovery time from
power save
Panel / Scan 7 sec.
Print approx. 27 sec. (DHC off, wireless LAN off)
Resolution Head 600dpi (4bit)
Maximum
Input dpi
600 x 2400dpi
Output dpi 600 x 600 dpi x 2bit
600 x 1200 dpi x 1bit
600 x 600 dpi x 1bit
CPU Core PPC464FP
Clock 800MHz
RAM Resident DDR2 32bit 1.26GB
(256MB(on Board) & 1GB(DIMM Slot)
Option N/A
ROM Main 64MB (Program+Font)
(I/F control 1MB)
HDD (Data storage) 2.5" SATA 250GB (STD)
Connectivity Standard 10/100/1000Base Ethernet
USB 2.0 Device
USB 2.0 Host x2
RJ11x2 (Line/Tel)
Options Wireless LAN (IEEE802.11 a/b/g/n)
Printer Language PostScript3, PCL5c, PCL6(XL), EPSON FX, IBM
ProPrinter, XPS, PDF(v1.x)
Item MC853/ES8453 MC873/ES8473
Fonts Scalable
Typefaces
87 PCL fonts, 80 PostScript fonts
Bitmap
Typefaces
4 PCL fonts
(Line Printer, OCR-A/B, USPS ZIP Barcode)
Barcode 10 types of one dimension with 26 variations:
UPC-A, UPC-E, EAN/JAN-8, EAN/JAN-13,
Interleaved2of5, Code39, Code 128, EAN/UCC-
128, CODABAR, ZIP+4POSTNET
2 types of two dimensions :
PDF417, Qrcode
Paper Handling See the table of the paper handling of the print.
2 Bin Ye s
Job offset 1 Bin No
2 Bin No
Acoustic noise Operating 54 dBA or less
Operating
(Quiet mode)
N/A
Standby 37dBA or less
Power save
mode
Background level
Power consumption off mode < 0.15W
Deep sleep
mode
≦3W
(Factory default without options)
Power save
mode
≦30W
(without options)
Idle < 120W
Typical
operation
< 850W
Peak < 1400W
Power Requirment <Voltage>
ODA, Taiwan : 120V AC +/-10%
OEL, ODA230, AOS : 230V AC +/-10%
<Frequency>
50/60Hz +/-2%

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-7
1. CONFIGURATION
Item MC853/ES8453 MC873/ES8473
Operating tempature 10 to 32 (C degree)
Operating humidity 20 to 80 %
Operation panel Type/Color Color touch panel
Size 7 inches WVGA(800x480)
Back Light Ye s
LED Power, Power save, Start, Status, Data in memory
Switches Home, Copy, Scan, Print, Fax, Satatus,
Numerical(0-9,*,#), Clear, Start, Stop, Power
save, Power
Soft power
switch
operation panel
Buzzer Yes (Speaker)
Dimension
(mm/inch)
Width 563mm/22.2"
Depth 600mm/23.6"
Height 700mm/27.6"
Weight Under 64kg
Printer life 600,000 pages or 5 years
Max. Monthly Printer duty 50,000 pages
Recommended Duty Cycle 10,000 pages
MTBF 5,000 hours
MPBF 100,000 pages
MTTR 20 minutes
Toner life
(@ISO/
IEC19798)
Starter K MC8x3 : 2,500 pages
ES84x3 : 13,600 pages (@5%)
C, M, Y MC8x3 : 2,500 pages
ES84x3 : 7,800 pages (@5%)
Supplies
std. K MC8x3 : 7,000 pages
ES84x3 : None
C, M, Y MC8x3 : 7,300 pages
ES84x3 : None
high
cap.
K MC8x3 : 15,000pages,
10,000pages(JPN/ODA only)
ES84x3 : 14,600 pages (@5%)
C, M, Y MC8x3 : 10,000 pages
ES84x3 : 8,800 pages (@5%)
Image drum life at
simplex (w/o power
save)
Continuous 44,000 pages
3 pages per
job
30,000 pages
1 page per
job
18,000 pages
Item MC853/ES8453 MC873/ES8473
Image drum life at duplex
(w/o power save)
Continuous 33,000pages(16,500sheets)
6 pages per
job
21,000pages(10,500sheets)
2 pages per
job
12,000pages(6,000sheets)
Transfer Belt life 80,000 pages
Fuser life 100,000 pages
Print
Function
Quiet mode No
Toner save mode Ye s
Override A4/Letter Yes (for Printing)
AirPrint Ye s
Google Cloud Print Ye s
USB direct print Yes (PDF, JPEG, TIFF, XPS)
Secure Print Ye s
Encrypt secure Print Ye s
IC card reader Ye s
Remote Firmware update Ye s
Print Complete Notification No
Certification Energy star (ver.2), Blue Angel

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-8
1. CONFIGURATION
Item MC853/ES8453 MC873/ES8473
Image quality adjustment Density, Background removal [Auto, OFF, 1, 2, 3, 4, 5,
6], Show-Through Removal [OFF, Low, Middle, High],
Contrast (7 levels for each menu)
Copy function Duplex
copy
Yes (1 to 2, 2 to 1, 2 to 2)
ID card
copy
Ye s
Collate Ye s
Continuous
scan
Ye s
N in 1 Yes (2in1 / 4in1 / 8in1)
Repeart Yes (x2 /x4 /x8)
Mixed
originals
Yes (comibination of Letter and Legal 13/13.5/14)
→(combination of LetterSEF and Legal13/13.5/14,
LetterLEF and Tabloid, Statement and Letter/Legal,
A4LEF and A3, B5LEF and B4, A5LEF and A4, A4SEF
and Folio)
Edge
erase
Yes (OFF, 2 to 50mm)
Center
erase
Ye s
Margin
shift
Yes (OFF, -25 to +25mm from left / top)
Interrupt
Copy(while
print job)
Ye s
Book copy Ye s
water mark Ye s
Copy specifications
Item MC853/ES8453 MC873/ES8473
Copy Speed (A4 LEF)
Flatbed Color up to 23cpm up to 35cpm
Mono up to 23cpm up to 35cpm
ADF simplex,
multiple originals
Color up to 23cpm up to 35cpm
Mono up to 23cpm up to 35cpm
ADF duplex,
multiple originals
Color up to 17cpm
Mono up to 17cpm
Time to first copy (Tray1, Simplex, A4LEF)
(Color : 300x300dpi)
(Mono : 600x600dpi)
Flatbed Color : 14.5sec
Flatbed Mono : 14.5sec
(Tray1, Simplex, A4LEF)
(Color : 300 x 300dpi)
(Mono : 600 x 600dpi)
Flatbed Color : 10sec
Flatbed Mono : 10sec
Copy resolution Scan 300x600dpi, 600x600dpi
Print 600x600, 600x1200dpi @600dpi HEAD
600x600, 1200x1200dpi @1200dpi HEAD
Resolution
selection
Normal, Extra Fine (color only)
Original size See the table of the paper handling of the scanner
Copy Scaling Auto, Manual : 25% to 400%,
Preset : 100%, 64%(Tabloid->Letter),
70%(A3->A4,A4->A5,B4->B5),
78%(Legal14->Letter), 81%(B4->A4,
B5->A5,Legal13.5->Letter),
84%(Legal13->Letter), 86%(A4->B5),
94%(A4->Letter), 97%(Letter->A4), 98%(Fit to page),
115%(B5->A4), 122%(A4->B4,A5->B5),
129%(Letter->Tabloid,HalfLetter->Letter),
141%(A4->A3,A5->A4,B5->B4)
Copy Quantity Selectcion up to 999
Document type selection Text, Photo/Text, Photo, Photo(Glossy)

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-9
1. CONFIGURATION
Scan specifications
Item MC853/ES8453 MC873/ES8473
Sensor type Color CIS
Optical
resolution
600dpi
Scan speed Flatbed 2.0sec/page (A4, Color, 300 x 600dpi)
2.0sec/page (A4, Mono, 600 x 600dpi)
ADF
Simplex
1.2sec/page (A4, Color, 300 x 600dpi)
1.2sec/page (A4, Mono, 600 x 600dpi)
ADF
Duplex
3.2sec/page (A4, Color, 300 x 600dpi)
3.2sec/page (A4, Mono, 600 x 600dpi)
Original size See paper handling table
Dual Scan No
Scan to Function Email, Shared folder (CIFS/FTP/HTTP), USB, Computer (Local
PC), Remote scan (only network ), Inside folder
Scan to email,
network PC,
USB
Mode Color, Grayscale, Binary
Resolution 75, 100, 150, 200, 300, 400, 600dpi
File format PDF, Secure PDF, S-TIFF/M-TIFF(RAW/G3/G4
Compressed), JPEG(color, grayscale only), XPS,
Hi compression PDF
Document
type selection
Text, Photo/Text, Photo, Photo(Glossy)
Duplex scan Yes (OFF / Long edge bind/Short edge bind)
Continuous
scan (Job
build)
Ye s
Image quality
adjustment
Density, Background removal[Auto,OFF,1,2,3,4,5,6], Show-
Through Removal[OFF,Low,Middle,High], Contrast, Hue,
Saturation, RGB
Mixed
originals
Yes (combination of LetterSEF and Legal13/ 13.5/ 14,
LetterLEF and Tabloid, Statement and Letter/Legal, A4LEF
and A3, B5LEF and B4, A5LEF and A4)
Edge erase Yes (OFF, 5 to 50mm)
Center erase Ye s
Scanning
Orientation
Ye s
File
compression
level
Color / Grayscale : Low / Medium / High
Binary : Raw / Medium / High
Item MC853/ES8453 MC873/ES8473
Scan to email,
network PC,
USB
Address book 1,000 locations, 32 group address
Scan profile 50 profiles
File system
(scan to USB)
FAT12, FAT(FAT16), FAT32
Scan to
computer
(with Actkey)
Mode Color, Grayscale, Binary, Halftone
Resolution 75, 100, 150, 200, 300, 400, 600dpi
File format PDF(Multi/Single), TIFF(Multi/Single), JPEG, BMP, PCX,
GIF, TGA, PNG, WMF, EMF
Remote scan Mode Color, Grayscale, Binary, Halftone
Resolution 75, 100, 150, 200, 300, 400, 600, 1200, 2400, 4800, 9600,
19200 dpi, Custom (50 to 600dpi)
Communication data storage Ye s
Scan Preview Ye s

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-10
1. CONFIGURATION
FAX specifications
Item MC853/ES8453 MC873/ES8473
Connetivity PSTN, PBX line
Speed ITU-T G3 (Super G3) up to 33.6kbps, Approx.
2seconds/page
Coding method MH, MR, MMR, JBIG
Fax memory 8MB (approx. 400pages)
One-touch dials 40 dials (8 x 5 using Scroll Button)
Speed dials 1,000 locations, 32 group address
On hook dial Ye s
Redial Ye s
Internet Fax T.37 simple mode
Original size A3, A4, A5, B4, B5, Tabloid, Letter,
Legal13/13.5/14, Statement, Folio
Resolution Std, Fine, Ex-fine, Photo
Density control Yes (7 levels)
Duplex scan/print Ye s
Continuous scan Ye s
Image quality adjustment Background removal
FAX function TEL/TAD/FAX
auto switching
Ye s
Distinctive Ring
Detection
Ye s
Automatic Tray
select for Fax print
Ye s
(A3, A4, A5, B4, B5, Tabloid, Letter, Legal13/ 13.5/ 14,
Statement, Folio)
Block junk FAX Ye s
PC FAX Yes (sending only)
Automated
delivery
Ye s
Edge erase Ye s
FAX reception
image preview
Ye s
Multi Poring No
Polling Receive No
Rotation
Transmission
Ye s
F-code Ye s
Report Communication management report (Only
transmission / Only reception), Daily report
Front End Installer specifications
Item MC853/ES8453 MC873/ES8473
Driver Install Ye s
Utility Install Ye s
Language Setting Ye s
Network Setting Ye s
Scan To Setting Ye s
FAX Setting Ye s

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-11
1. CONFIGURATION
Other specifications
Item MC853/ES8453 MC873/ES8473
IC card reader for panel unlock &
secure print
Ye s
Open-API support Ye s
Audio Guide No
Scan to Box Function Support Ye s
WiFi Direct Support No
Concurrent Connection of Wired
& Wireless
No
SD memory No
Additional tray Yes (See the item 1.3 for the assembly pattern)
Finisher No
Off-line Stapler Ye s
LCF No
FDI Not Standard (COC correspondence).
This machine is prepared On-board (CU board).
Default Setting ID: Near Life
Warning
@A4 one-sided
printing at 3
pages per job
MC8x3 model:
Enable Near Life Warning, 3,000 pages before life
ES84x3 model:
Disable Near Life Warning, 500 pages before life when
enable
Fuser: Near Life
Warning
@A4 one-sided
printing at 3
pages per job
MC8x3 model:
Enable Near Life Warning, 2,500 pages before life
ES84x3 model:
Disable Near Life Warning, 500 pages before life when
enable
Belt: Near Life
Warning
@A4 one-sided
printing at 3
pages per job
MC8x3 model:
Enable Near Life Warning, 2,000 pages before life
ES84x3 model:
Disable Near Life Warning, 500 pages before life when
enable
Protocol See the protocol table for detail

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-12
1. CONFIGURATION
Tray Standard Option Paper Size
Detection/
(Tray1)
MPT 1st tray Duplex 2nd tray/
3rd tray/
4th tray
size
China 8K(273 x 394) Ye s Ye s Ye s Ye s Manual
China 8K(260 x 368) Ye s Ye s Ye s Ye s Manual
China 16K(197 x 273) SEF Ye s Ye s Ye s Ye s Manual
China 16K(195 x 270) SEF Ye s Ye s Ye s Ye s Manual
China 16K(184 x 260) SEF Ye s Ye s Ye s Ye s Manual
China 16K (197 x 273) LEF Ye s Ye s Ye s Ye s Manual
China 16K (195 x 270) LEF Ye s Ye s Ye s Ye s Manual
China 16K (184 x 260) LEF Ye s Ye s Ye s Ye s Manual
Index Card(3" x 5") Ye s
4" x 6" Ye s
5" x 7" Ye s
Custom Size Ye s Ye s Ye s Ye s Manual
Envelop C4, C5,
LEF, DL
LEF, COM-
10 LEF
Other
minimum size 64 x 90mm
2.5" x3.5"
105 x
148mm
(A6) /
4.1" x 5.8"
128 x
182mm /
5.0" x 7.2"
148 x
182mm /
5.8" x 7.2"
maximum size 297 x 1,321
mm /
11.7" x 52"
297 x 431.8
mm /
11.7" x 17"
297 x 431.8
mm /
11.7" x 17"
297 x 431.8
mm /
11.7" x 17"
wight 64 - 256
gsm /
17 - 68lb /
64 - 220
gsm /
17 - 58lb
64 - 220
gsm /
17 - 58lb
64 - 176
gsm /
17 - 47lb
media type Plain,
Letterhead,
Trans-
parency,
Labels,
Bond,
Recycled,
Card Stock,
Rough,
Glossy,
Usertype
Plain, Letterhead, Bond, Recycled, Card Stock,
Rough, Glossy, Usertype
* Default : Leagal
Paper handling
Printer section
< Paper Input >
Tray Standard Option Paper Size
Detection/
(Tray1)
MPT 1st tray Duplex 2nd tray/
3rd tray/
4th tray
paper input capacity 100 sheets
(80gsm)/
110 sheets
(64gsm)
300 sheets
(80gsm)/
330 sheets
(64gsm)
- 530 sheets
(80gsm)/
580 sheets
(64gsm)
size
A3 nobi
SR A3
A3 Ye s Ye s Ye s Ye s Auto
A4 SEF Ye s Ye s Ye s Ye s Auto
A4 LEF Ye s Ye s Ye s Ye s Auto
A5 SEF Ye s Ye s Ye s Ye s Auto
A5 LEF Ye s Ye s Auto
A6 SEF Ye s Ye s Auto
A6 LEF
B4 Ye s Ye s Ye s Ye s Auto
B5 SEF Ye s Ye s Ye s Ye s Auto
B5 LEF Ye s Ye s Ye s Ye s Auto
B6 SEF Ye s Ye s Ye s Manual
B6 LEF Ye s
B6 Half Ye s
Tabloid (11 x 17) Ye s Ye s Ye s Ye s Auto
Letter (8.5 x 11) Ye s Ye s Ye s Ye s Auto
Letter (11 x 8.5 ) Ye s Ye s Ye s Ye s Auto
Legal 13 Ye s Ye s Ye s Ye s Manual
Legal 13.5 Ye s Ye s Ye s Ye s Manual
Legal 14 Ye s Ye s Ye s Ye s Auto*
Executive(7.25 x 10.5) SEF Ye s Ye s Ye s Ye s Auto
Executive(7.25 x 10.5) LEF
Statement SEF (5.5 x 8.5) Ye s Ye s Manual
Statement LEF (8.5 x 5.5) Ye s
8.5"SQ(8.5 x 8.5) Ye s Ye s Ye s Ye s Manual
Folio(210 x 330.2) Ye s Ye s Ye s Ye s Manual
China 8K(270 x 390) Ye s Ye s Ye s Ye s Manual

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-13
1. CONFIGURATION
Stacker Face up Face down
1st bin 2nd bin
size
China 16K (184 x 260) LEF Ye s Ye s Ye s
3" x 5" Ye s
4" x 6" Ye s Ye s
5" x 7" Ye s Ye s
Custom Size Ye s Ye s Ye s
Envelop Ye s
Other Postcard
Banner up
to 52"
minimum size 64 x 90mm/
2.5" x3.5"
105 x
148mm
(A6)/
4.1" x 5.8"
148 x
182mm/
5.8" x 7.2"
maximum size 297 x
1,321mm /
11.7" x 52"
297 x
431.8mm/
11.7" x 17"
297 x
431.8mm/
11.7" x 17"
weight 64 -
256gsm/
17 - 68lb
64 -
220gsm/
17 - 58lb
64 -
220gsm/
17 - 58lb
media type Plain,
Letterhead,
Trans-
parency,
Labels,
Bond,
Recycled,
Card
Stock,
Rough,
Glossy,
Usertype
Plain, Letterhead,
Bond, Recycled, Card
Stock, Rough, Glossy,
Usertype
< Paper output >
Stacker Face up Face down
1st bin 2nd bin
Paper output Capacity 100 sheets
(<80gsm)
200 sheets
(<80gsm)
100 sheets
(<80gsm)
size
A3 nobi
SR A3
A3 Ye s Ye s Ye s
A4 SEF Ye s Ye s Ye s
A4 LEF Ye s Ye s Ye s
A5 SEF Ye s Ye s Ye s
A5 LEF Ye s Ye s
A6 SEF Ye s Ye s
A6 LEF
B4 Ye s Ye s Ye s
B5 SEF Ye s Ye s Ye s
B5 LEF Ye s Ye s Ye s
B6 SEF Ye s Ye s
B6 LEF Ye s
B6 Half Ye s
Tabloid (11 x 17) Ye s Ye s Ye s
Letter (8.5 x 11) Ye s Ye s Ye s
Letter (11 x 8.5 ) Ye s Ye s Ye s
Legal13 Ye s Ye s Ye s
Legal13.5 Ye s Ye s Ye s
Legal14 Ye s Ye s Ye s
Executive(7.25 x 10.5) SEF Ye s Ye s Ye s
Executive(7.25 x 10.5) LEF Ye s Ye s Ye s
Statement SEF (5.5 x 8.5) Ye s Ye s Ye s
Statement LEF (8.5 x 5.5) Ye s
8.5"SQ(8.5 x 8.5) Ye s Ye s Ye s
Folio(210 x 330.2) Ye s Ye s Ye s
China 8K(270 x 390) Ye s Ye s Ye s
China 8K(273 x 394) Ye s Ye s Ye s
China 8K(260 x 368) Ye s Ye s Ye s
China 16K(197 x 273) SEF Ye s Ye s Ye s
China 16K(195 x 270) SEF Ye s Ye s Ye s
China 16K(184 x 260) SEF Ye s Ye s Ye s
China 16K (197 x 273) LEF Ye s Ye s Ye s
China 16K (195 x 270) LEF Ye s Ye s Ye s

Oki Data CONFIDENTIAL
45850101TH Rev.1 1-14
1. CONFIGURATION
RADF Flatbed
Simplex Duplex Paper Size
Detection
on glass Paper Size
Detection
size
China 16K(184 x 260)
China 16K (197 x 273) LEF
China 16K (195 x 270) LEF
China 16K (184 x 260) LEF
3" x 5"
4" x 6"
5" x 7"
Custom Size
Envelop
Others
minimum size 105 x 148
mm (A6)/
4.1" x 5.8"
148 x 210
mm (A5)/
5.8" x 8.3"
No
limitation
maximum size 297 x
431.8mm/
11.7" x 17"
297 x
431.8mm/
11.7" x 17"
297 x
431.8mm/
11.7" x 17"
weight 60 -
120gsm/
16 - 32lb
60 -
120gsm/
16 - 32lb
Under
15kg
weight on
the platen
glass
Memo :Under the setting of 'detecting document size' is 'AUTO', the detectable document
size is defferent by the set category setting for the species of the detecting
document size.
In case of the setting is 'AB' descent: the auto detect function is able to detect the
size of 'A3' to 'B5-LEF' and Folio.
In case of the setting is 'LT' descent: the auto detect function is able to detect the
size of 'Tabloid' to 'Statement-LEF'.
Scanner section
< Document Paper Input >
RADF Flatbed
Simplex Duplex Paper Size
Detection
on glass Paper Size
Detection
max inpput capacity 100 sheet
(80gsm)
100 sheet
(80gsm)
-
size
A3 nobi
SR A3
A3 Ye s Ye s Auto Ye s Auto
A4 SEF Ye s Ye s Auto Ye s Auto
A4 LEF Ye s Ye s Auto Ye s Auto
A5 SEF Ye s Ye s Auto Ye s Auto
A5 LEF Ye s Auto Ye s Auto
A6 SEF Ye s Auto Ye s Auto
A6 LEF
B4 Ye s Ye s Auto Ye s Auto
B5 SEF Ye s Ye s Auto Ye s Auto
B5 LEF Ye s Auto Ye s Auto
B6 SEF
B6 LEF
B6 Half
Tabloid (11 x 17) Ye s Ye s Auto Ye s Auto
Letter (8.5 x 11) Ye s Ye s Auto Ye s Auto
Letter (11 x 8.5 ) Ye s Ye s Auto Ye s Auto
Legal13 Ye s Ye s Manual Ye s Manual
Legal13.5 Ye s Ye s Manual Ye s Manual
Legal14 Ye s Ye s Auto Ye s Auto
Executive(7.25 x 10.5) SEF Ye s Ye s Manual Ye s Auto
Executive(7.25 x 10.5) LEF
Statement SEF (5.5 x 8.5) Ye s Ye s Auto Ye s Auto
Statement LEF (8.5 x 5.5) Ye s Manual Ye s Manual
8.5"SQ(8.5 x 8.5) Ye s Ye s Manual Ye s Manual
Folio(210 x 330.2) Ye s Ye s Auto Ye s Auto
China 8K(270 x 390)
China 8K(273 x 394)
China 8K(260 x 368)
China 16K(197 x 273)
China 16K(195 x 270)