Oki MC760 User manual

OEL Maintenance Manual
MC760/MC770/MC780
ES7470MFP/ES7480MFP
Revision2
This document is “OKI DATA – CONFIDENTIAL”
Only persons and parties authorised by OKI DATA have
permissions to access this document.
This document should not be accessed by any parties
without the approval of OKI DATA.
Anyone who is found to be contradicting the above may be subject to legal action.

2 /
Document Revision History
Rev.No Date
Corrected items Person in
charge
No. Page Description of change
1 2013-03-28 Issue P2E1 T. Asaba
2 2013-09-10 Add LCF Unit P2E16 T.Oyama
3 2013-12-24 Correct error codes P2E16 T.Oyama
4 2015-07-17 Correct remedial measure PBPE12 S.Hirose
5 2015-09-15 Correct remedial measure PBPE12 S.Hirose
6 2015-10-15 Add 4.2.34, 4.2.35 PBPD21 H. Ueda
7 2015-11-25 Correct remedial measure PBPE12 S.Hirose
8 2016-07-15 Add REG ADJUST TEST PBPE12 S.Hirose
9 2017-08-11 Drawing update for 5.1 SE43 Y. Utsubo
10 2017-10-20 Correct description
contents
HC21 H.Eguchi
11 2019-01-31 Error correction HM22 I.Kitano
12 2019-04-23 85 Addition of parts HD12 H. Ueda
Rev.No Date
Corrected items Person in
charge
No. Page Description of change

3 /
This manual provides an overview of method for maintaining the MC760/MC770/MC780.
This manual is intended for maintenance staff. For more information about how to operate
the MC760/MC770/MC780, please refer to User 's manual.
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 printer may be damaged when handling
inappropriately. We strongly recommend maintaining this machine by our
registration maintenance staff.
• Please operate the machine after removing static electricity.
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 CU board.
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.

4 /
Index
1. Configuration...........................................................................6
1.1 System configuration ............................................................................................ 7
1.2 The Configuration of printer.................................................................................. 8
1.3 Optional parts ....................................................................................................... 9
1.4 Specifications ..................................................................................................... 10
1.5 Specification of interface .................................................................................... 18
1.5.1 Specification of USB interface .................................................................... 18
1.5.1.1 General of USB interface..................................................................... 18
1.5.1.2 Connector and cable of USB interface................................................. 18
1.5.1.3 USB interface signal ............................................................................ 18
1.5.2 Specification of network interface ............................................................... 19
1.5.2.1 General of network interface................................................................ 19
1.5.2.2 Connector and cable of network interface ........................................... 19
1.5.2.3 Signal of network interface .................................................................. 19
1.5.3 Telephone Line Interface Specification ....................................................... 20
1.5.3.1 Outline of telephone Line Interface...................................................... 20
1.5.3.2 Telephone Line Interface Connector and Cable................................... 20
1.5.3.3 Telephone Line Interface signal ........................................................... 20
1.5.4 USB Host Interface ..................................................................................... 20
1.5.4.1 Outline of USB Host Interface.............................................................. 20
1.5.4.2 USB Host Interface Connector ............................................................ 20
1.5.4.3 USB Host Interface Signal ................................................................... 20
1.5.5 Specification of ACC interface .................................................................... 21
2. Operating instructions..........................................................22
2.1 Electrophotographic processing mechanism...................................................... 23
2.2 Printing process.................................................................................................. 27
2.3 Image Scanning process.................................................................................... 38
2.3.1 Structure and process of RADF.................................................................. 38
2.3.1.1 Cross-section view............................................................................... 38
2.3.1.2 Electrical configuration......................................................................... 38
2.3.1.3 Fundamental operations ...................................................................... 39
2.3.1.4 Document detection............................................................................. 42
2.3.1.5 Jam detection ...................................................................................... 43
2.3.2 Document table structure............................................................................ 43
2.3.2.1 Overview.............................................................................................. 43
2.3.2.2 Exposure block .................................................................................... 44
2.3.2.3 Carraige-Assy drive mechanism.......................................................... 44
3. Set up .....................................................................................45
3.1 Notes and precautions........................................................................................ 46
3.2 Unpack method .................................................................................................. 47
3.3 Setting method ................................................................................................... 48
3.4 List of equipments and accessories ................................................................... 49
3.5 Assembling method ............................................................................................ 50
3.5.1 Assemble the main body of the MFP.......................................................... 50
3.5.2 Cable connect ............................................................................................. 57
3.5.3 Optional part installation and confirmation.................................................. 59
3.6 Setting content print (Configuration)................................................................... 64
3.7 Connecting method ............................................................................................ 65
3.8 User used Paper confirmation ............................................................................ 69
4. Component replacement ...................................................... 70
4.1 Precautions on component replacement............................................................ 71
4.2 Method of component replacement.................................................................... 73
4.2.1 Belt unit....................................................................................................... 73
4.2.2 Fuser unit.................................................................................................... 74
4.2.3 Right side cover .......................................................................................... 74
4.2.4 Left side cover............................................................................................. 75
4.2.5 Scanner unit ............................................................................................... 75
4.2.6 Faceup tray ................................................................................................ 76
4.2.7 Rear cover................................................................................................... 76
4.2.8 LED Assy/ LED Assy spring........................................................................ 77
4.2.9 CU/PU PCB/Low voltage power supply ...................................................... 77
4.2.10 Stay-R ......................................................................................................... 79
4.2.11 Plate-Board-R Assy/Guide-Cable Power Low............................................. 79
4.2.12 Top cover Assy............................................................................................ 80
4.2.13 Top cover .................................................................................................... 81
4.2.14 Frame Assy Top Front................................................................................. 81
4.2.15 Board MFH ................................................................................................. 82
4.2.16 Hopping motor/ Fuse motor........................................................................ 83

5 /
4.2.17 Guide eject Assy/ Color regist Assy/ Board-IBY ......................................... 84
4.2.18 FAN(Fuser) / Belt motor/ High-voltage board / Lever Assy.-InterLock /
Cover open switch....................................................................................... 85
4.2.19 MPT Assy ................................................................................................... 85
4.2.20 Cover Assy front/ Board-RSF/MPT hopping roller/ Frame Assy separator/
Feeder Assy regist...................................................................................... 86
4.2.21 Plate-Driver/ Shaft-Liftup/ Hopping cover.................................................... 87
4.2.22 Plate-Assy-Side R/ Plate-Assy-Side L........................................................ 88
4.2.23 Feed roller................................................................................................... 88
4.2.24 Eject sensor/Micro-SW ............................................................................... 89
4.2.25 Antenna (for wireless model only)............................................................... 89
4.2.26 Finisher (MC780dnf only)............................................................................ 90
4.2.27 Stapler (MC780dn only).............................................................................. 91
4.2.28 Tray-Assy-Document/Cover-ADF-R............................................................ 92
4.2.29 ADF-unit ..................................................................................................... 93
4.2.30 Sheet-document / Paper-weight-Assy / Spring-PW-ADF............................94
4.2.31 Hinge-Assy-L / Hinge-Assy-R ..................................................................... 95
4.2.32 ADF-Assy ................................................................................................... 95
4.2.33 Guide-Retard / Roller / Motor / Clutch / Solenoid / Photo-sensor............... 96
4.2.34 Cover-Assy-Top-ADF.................................................................................. 97
4.2.35 Frame-Assy-Hopping-ADF ......................................................................... 98
4.2.36 Guide-Assy-Retard ..................................................................................... 99
4.2.37 Flatbed-Unit ................................................................................................ 99
4.2.38 Frame-assy-FB ......................................................................................... 100
4.3 Check the Scanner Mech Level and SU FW version........................................ 101
4.4 Oiling spots....................................................................................................... 102
5. Maintenance Menu .............................................................. 113
5.1 Maintenance Utility .......................................................................................... 114
5.2 Maintenance menu functions............................................................................ 115
5.2.1 Self-diagnostic mode ................................................................................ 115
5.2.1.1 Operation panel ................................................................................. 115
5.2.1.2 Ordinary self-diagnostic mode (level 1) ............................................. 117
5.2.1.3 Switch scan test................................................................................. 118
5.2.1.4 Motor clutch test ................................................................................ 120
5.2.1.5 Test print ............................................................................................ 122
5.2.1.6 Color registration correction test........................................................ 126
5.2.1.7 Density correction test ....................................................................... 127
5.2.1.8 Consumable item counter display...................................................... 129
5.2.1.9 Number of print copies counter display ............................................. 130
5.2.1.10 Switching between the Factory mode and the Shipping mode.......... 130
5.2.1.11 Self-diagnostic function setting .......................................................... 131
5.2.1.12 LED head serial number display ....................................................... 132
5.2.1.13 NVRAM parameter setting ................................................................ 132
5.2.2 How to enter the Scanner Maintenance Menu.......................................... 133
5.3 Setups upon completion of part replacement................................................... 135
5.3.1 Precautions when replacing the PU board................................................ 135
5.4 Density control manual setting ......................................................................... 137
6. Periodic Maintenance.......................................................... 138
6.1 Cleaning ........................................................................................................... 139
6.2 How to clean the LED lens array ...................................................................... 140
6.3 How to clean the pickup roller .......................................................................... 142
6.4 How to clean the paper feed rollers for MP Tray ............................................... 143
6.5 How to clean the rollers in the ADF.................................................................. 144
6.6 How to clean the document rollers in the ADF ................................................. 145
6.7 How to clean the document glass..................................................................... 146
6.8 How to clean inside of MFP.............................................................................. 147
7. Troubleshooting and repair procedure ............................. 149
7.1 Before starting the repair work ......................................................................... 150
7.2 Confirmation items before taking corrective action against abnormalities ....... 150
7.3 Precautions when taking corrective action against abnormality ....................... 150
7.4 Preparation for troubleshooting ........................................................................ 150
7.5 Troubleshooting method ................................................................................... 151
7.5.1 Error code list............................................................................................ 151
7.5.2 Printer error troubleshooting ..................................................................... 154
7.5.3 Scanner error troubleshooting .................................................................. 160
7.5.4 Preparation for troubleshooting................................................................. 162
7.5.5 Troubleshooting the abnormal images ...................................................... 199
7.6 Fuse check ....................................................................................................... 206
7.7 Paper cassette switches versus Paper size correspondence table .................. 207
8. Connection diagrams..........................................................208
8.1 Resistance value check.................................................................................... 209
8.2 Parts location.................................................................................................... 214

1.
Configuration
1.1 System configuration .....................................................................7
1.2 The Configuration of printer...........................................................8
1.3 Optional parts ................................................................................9
1.4 Specifications ..............................................................................10
1.5 Specification of interface..............................................................18

7 /
1.Configuration
FAX Control PCB
FAX LINE PCB
OPE
WLAN
Antenna
DIMM
HDD
HOST
USB
(Front)
HAND
SET
LCD Speaker
RFID PCB
Finisher Unit
Stapler
CM_ID
Motor
YK_ID
Motor
Stapler Cover SW
K LED HEAD
Y LED HEAD
M LED HEAD
C LED HEAD
Stacker
full
sensor
ID
FAN
M
HEAT
Low-voltage PCB
Toner sensor PCB
Environment sensor PCB
Front sensor PCB
(WR,IN1,IN2)
Hopping
clutch
MPT
clutch
Regist
clutch
1st
P. E
sensor
HOP
sensor
M
ID UP
M
BELT
Paper
size
SW
M
HOP
Duplex
FANFront
sensor
IN
sensor
Cover
open
sensor
Bottom
sensor
DUPLEX PCB
Duplex
clutch
Duplex
motor
Separator
solenoid
Feed
clutch
Hopping
clutch
Paper-feeding/
moving motor
2nd
P. E
sensor
2nd
IN
sensor
2nd
paper
size SW
2nd TRAY PCB
2nd
hopping
sensor
Inlet
AC-SW
Inter Lock SW
High-voltage PCB
Fuser
FAN
Fuser
Low-voltage
FAN
FAX
TEL
USB
HOST
USB
LAN
Unit-CIS
FB
Motor
Rear Cover SW
Relay PCB
EXIT
sensor
Density
sensor
Color blur PCB
right
Color blur PCB
left
Belt unit
Fuser
3rd
P. E
sensor
3rd
IN
sensor
3rd
paper
size SW
3rd
hopping
sensor
3rd TRAY PCB
Scan
sensor
HOP
sensor
Regist
sensor Reverse
sensor
Paper
Set
sensor
M
ADF
Cover
Open
sensor
solenoid Clutch
Clutch
FB
Home Position sensor
Feed
clutch
Hopping
clutch
Paper-feeding/
moving motor
4th
P. E
sensor
4th
IN
sensor
4th
paper
size SW
4th
hopping
sensor
4th TRAY PCB
Feed
clutch
Hopping
clutch
Paper-feeding/
moving motor
PU PCB
ADF Relay PCB
CU PCB
SU PCB
Option
Feed
clutch
Hopping
clutch
M
LIFT
Paper-feeding/
moving motor
P. E
sensor
IN
sensor paper
size SW
LCF PCB
hopping
sensor
Option
Option Option
FAX部
IC Card Reader
KP-2006(Felica)
KP-2004(HID)
KP-2005(Mifare)
Option
Fig1-1
1.1 System configuration
Figure 1-1 represents the system configuration of the printer.

8 /
1.Configuration
Fig 1-2
1.2 The Configuration of printer
The parts in the MC760/MC770/MC780 are shown as below.
• Electrophotography process mechanism
• Paper feed path
• Control part (CU part/ PU part/ FAX Unit)
• Operator panel
• Power part (High-voltage part/low-voltage part)
The Configuration of the MFP is shown in Fig 1-2.

9 /
1. Configuration
1.3 Optional parts
The optional parts for this printer are shown as below.
(1) Optional tray(second tray/ third tray/fourth tray*)
*fourth tray:not support for Finisher model
(2) Spacer
(3) Caster Stand
(4) LCF

10 /
1. Configuration
1.4 Specifications
Fundamental specifications
Category Item MC760 MC770 MC780
Outside dimensions Width 522mm
Depth 604mm
Height 675mm (Finisher model:811mm)
Weight Approx. 50kg (Finisher model:60kg)
CPU CU APM86190
RAM CU Resident 2 GB
Option N/A
ROM CU Program 8MB
Control Panel LCD 9 inch WVGA color touch panel
Size:198.0 mm(W) x 111.7 mm(H)
Resolution:800dot x 480dot
Hard Keys Ten key, start key, stop key, power key,
ENERGY SAVER KEY and others
Qwerty keyboard No
Operation sound Operating
55dB(A)
(Sound pressure level)
57dB(A)
(Sound
pressure
level)
Standby 37dB(A) (Sound pressure level)
Power save mode Inaudible
Power consumption Power input 110-127VAC (Range 99-140VAC)
220-240VAC (Range 198-264VAC)
Sleep mode 1.5W (no FAX model)
2.0W (FAX model)
Power save mode 60W
Idle 130W
Typical operation 800W
Peak 1500W
Category Item MC760 MC770 MC780
Operating environment
(temperature)
During operation 10 °C to 32 °C,17 °C to 27 °C (Full color
print quality assurance temperature)
During non-operation 0°C - 43°C, Power OFF
During storage
(Maximum one year)
-10°C to 43°C, with drum and toners
During transportation
(Maximum one month)
-30°C - 50°C, with drum, without toners
During transportation
(Maximum one month)
-30°C to 50°C, with drum and toners
Operating environment
(humidity)
During operation 20% - 80%, 50% - 70% (Full color print
quality assurance humidity), Maximum
wet-bulb temperature 25°C
During non-operation 10% - 90%, Maximum wet-bulb
temperature 26.8°C, power OFF
During storage 10% - 90%, Maximum wet-bulb
temperature 35°C
During transportation 10% - 90%, Maximum wet-bulb
temperature 40°C
Emulation Standard PCL5e/PCL5c/PCL6/PS3 emulation/
PDF emulation/XPS
Emulation switch Automatic
Others USB-IF logo Yes
Windows logo Yes
Operations on UPS Operations on UPS (uninterruptible
power supply) are not guaranteed.
Do not use UPS.
CPU SU Core ARM9
RAM SU Resident 256 MB
Option None
ROM SU Program 4MB

11 /
1. Configuration
Printer section specifications
Category Item MC760 MC770 MC780
Print width Print width A4 horizontal
Engine speed (A4/LT) Monochrome 28/30ppm 36/37ppm 40/42ppm
Duplex Mono 22/23ppm 27/28ppm 32/33ppm
Color 28/30ppm 34/35ppm 40/42ppm
Duplex Color 22/23ppm 25/26ppm 32/33ppm
First print out time (A4)
*Printer isnt in low
temperature(<16℃)
Monochrome TBD 8 sec 8 sec
Color TBD 9 sec 8 sec
Warm-up time From Power On with
calibrations
Less than 60sec
From Power save Less than 35sec
Resolution LED head 600 x 600 dpi
Maximum input
resolution
600 x 1200dpi
Output resolution True 600x600dpi x 5bit
True 600x1200dpi x 1bit (for PS only)
Life Printer life 600K page or 5 years
Maximum Monthly
Print Volume when
Continuous Print
100K(under specific condition)
60K(under all condition)
MTBF 6,000H (Reference only)
MPBF 45K
MTTR Less than 20 min.
Toner life
(ISO/IEC
19798)
Starter
toner
(supplied)
C, M, Y, K : 4.8K
Standard C,M,Y:6K,K:8K
High-
Capacity
No C,M,Y:11.5K,K:15K
Image
drum life
Simplex Continuous:40K (Target)
3P/J:30K
1P/J:18K
Duplex Continuous:34K
3 sheets/J(6P/J):23.1K
1 sheets/J(2P/J):13.9K
Category Item MC760 MC770 MC780
Life Transfer belt life 60,000 pages
Fuser life 60,000 pages
Paper handling 1st Tray 530 sheets of 80g/m2 (70Kg) plain paper
Multi purpose tray 100 sheets of 80g/m2 (70Kg) plain paper
10 envelopes
2nd/3rd/4th Tray Option 530 sheets of 80g/m2 (70Kg) plain paper
LCF 2,000 sheets of 80g/m2 (70Kg) plain
paper
Paper output capability Face up:Approx.100 sheets of 80g/m2
(70Kg) plain paper
Face down:Approx.500 sheets of 80g/m2
(70Kg) plain paper
(Finisher model:Approx.100 sheets of
80g/m2(70Kg) plain paper)
Finisher : Approx.500 sheets of 80g/m2
(70Kg) plain paper
Paper size 1st/2nd/3rd/4th tray A4,A5,B5,Letter,Legal13/13.5/14,Executi
ve,8.5"SQ,Folio,China16K(195x270),
Custom size(Width:148-216mm
Length:210-356mm)
LCF A4,Letter,Legal13/13.5/14
Multi purpose tray A4,A5,A6,B5,Letter,Legal13/13.5/14,
Executive,Statement,8.5"SQ,Folio,China
16K(195x270),Com-9,Com-10,
Cyou3,Cyou4,B6Half,C5,DL,Monarch,
IndexCard(3x5inch),
PhotoSize(4x6inch/5x7inch),
CustomSize(Width:64-216mm x
Length:127-1321mm, (When length is
over 356mm, width is 210-216mm)),
Banner up to 52"
Duplex A4,A5,B5,Letter,Legal13/13.5/14,Exectiv
e,Statement,8.5"SQ,Folio,China16K(195
x270),Custom size(Width:148-216mm
Length:210-356mm)

12 /
1. Configuration
Category Item MC760 MC770 MC780
Minimum paper size 1st/2nd/3rd/4th tray 5.8" x 8.3" (148 x 210mm : A5)
LCF 8.5”×11”(210×297mm : A4)
Multi purpose tray 3" x 5" (Index Card),
64 x 182mm (B6 Half)
Duplex 5.5"x8.3"(139.7 x 210mm)
Paper thickness 1st/2nd/3rd/4th tray
LCF
64 – 220 g/m2
MPT 64 – 250 g/m2
Duplex 64 – 220 g/m2
Status switch/sensor Paper Empty Ye s
Paper Low No
MPT Paper End No
Toner Low Ye s
Cover Open Ye s
Fuser Temperature Ye s
Paper Size Detect (Tray) Ye s
Paper Size Detect
(MPT)
No
Stacker Full Yes (Face-down)
Paper Thickness Detect No
Continuouse Roll Paper
Sag detection
No
Fonts PCL Roman (Bitmap) No
PCL Roman (Scalable) 80 fonts
PCL Heisei (Scalable) No
PS Roman (Scalable) 138 fonts
PS Heisei (Scalable) No
Barcode computational Yes (by font download)
Scanner section specifications
Item
Scanner type Legal size flatbed with RADF
Image sensor Color CIS
Light source LED
Optical resolution 600dpi
Input level (A/D conversion) 48 bit
Output level 24 bit
Document size Flat bed Max:8.5"x14" (215.9x355.6mm)
Min:No limitation
ADF Max:8.5"x14" (215.9x355.6mm)
Min:4.13"x5.8" (105x148mm)
Document
thickness
Flat bed 20mm
RADF 16~28lb (60~105g/m2)
Maximum
scanning range
Flat bed Maximum 215.9x355.6mm
RADF 4.13 x 5.8~8.5x 14in (105 x 148~215.9x355.6mm)
Scanning speed
(A4/Letter,simplex)
Color : up to 40ipm (Less than 300dpi)
up to 25ipm (400 / 600dpi)
Mono: up to 40ipm(300/400/600dpi)
Warm-up time Less than 1 sec.
Life MTBF 6,000H (Reference only)
MTTR Less than 20 min.
Attachment file format Color : JPEG, TIFF(multi/single page), PDF(multi/single
page), Slim PDF, Secure PDF, XPS(multi/single page)
ACS : TIFF(multi/single page), PDF(multi/single page),
XPS(multi/single page)
Grayscale : JPEG, TIFF(multi/single page), PDF(multi/
single page), Slim PDF, Secure PDF, XPS(multi/single
page)
Mono : TIFF(multi/single page), PDF(multi/single page),
XPS(multi/single page)
Supported driver Scanner driver (Network), Fax Modem driver (Windows
only)

13 /
1. Configuration
Network specifications
Item
Connection 10Base-T/100Base-TX/1000Base-T
Communication protocol TCP/IP V4, TCP/IP V6, NetBIOS over TCP, Ether Talk,
NetWare, LPR, Port9100, IPP, FTP, WSD-print, SMTP,
POP3, HTTP, SNMPv1, SNMPv3, DHCP, DNS, DDNS,
WINS, SLP, Bonjour, SNTP
Supported browser Microsoft Internet Explorer Ver. 6.0 or higher
Safari 4.0 or higher
Firefox 3.5 or higher

14 /
1. Configuration
Copy function
Categories Specs
Copy Resolution Scan: 300x300dpi / 300x600dpi / 600x600dpi
Print: 600x600dpi / 600x1200dpi
Document
Size
Flatbed/RADF A4, A5, A6, B5, Executive, Letter, Legal13,
Legal13.5, Legal14, Folio
Number of Copies 1 to 999 pages
Collate(Sort) Ye s
(No. of page is depend on HDD capacity)
Zoom
(Auto is
spported)
Custom 25 ~ 400%, to scale by 1%.
Preset No
(Original size / Tray size selection works as preset
scaling))
Edge Erase 2~50mm (increments of 1mm)
0.1~2.0 inch (increments of 0.1 inch)
Margin shift 0 ~ ±25 mm 0.0~±1.0 inch (1mm/Step)
N-up Document pages 2-up,4-up
ID Card Copy Yes (by template)
Repeat Copy Yes (max 8 times)
Poster Copy No
Document Direction Portrate,Landscape
Duplex Copy Yes (1 to 2, 2 to 1, 2 to 2)
Binding Position Long edge, Short edge
Mixed Size Yes (Letter/Legal13,Letter/Legal13.5,Letter/Legal14,
A4/Folio)
Job build scanning Ye s
Banner Copy No
Color/Mono Selected by User by Menu setting
Copy image quality adjustment Background removal, Density(Auto/Manual),
Contrast, Saturation, Hue

15 /
1. Configuration
Fax specification
Category Item MC770 MC780
General Function Compatibility ITU-T G3
Applicable Network PSTN, PBX
Country Code Yes (26 Countries)
Transmission Ability Letter / Legal
Reception Ability Letter /unlimited
Fax Resolution 8 x 3.85 dots/mm, 8x 7.7 dots/mm,
8 x 15.4dots/mm, 16 x 15.4 dots/mm,
300 x 300 dots/inch
Contrast Control Auto or manual (11 Level)
Send Fax from RADF
(duplex document)
Ye s
Mixed Reading For
ADF/FBS
No
Auto reduction
printing of the FAX
No
Fixed reduction
printing of the FAX
Yes (90%)
Page division print Ye s
Maximum Modem
Speed
33.6kbps
Dual Access Ye s
ECM Ye s
Coding Scheme MH, MR, MMR, JBIG
Transmission time Approx. 3 seconds
Memory Capacity 1GB
Image Battery Back
Up
Yes (HDD)
Category Item MC770 MC780
Communication
Function
Realtime Tx Ye s
Instant Dial Tx
(Quick Memory TX)
No
Realtime Page Print
Reception
No
Memory Tx/Rx Ye s
Relay Broadcast
(OKI Mode)
No
Confidential Tx/Rx
(OKI Mode)
No
Bulletin Poll
(OKI Mode)
No
F Code Bulletin Poll Ye s
F Code Confidential Ye s
F Code Routing Ye s
Delayed
Transmission
Ye s
Broadcast Yes (400 stations)
Delayed Broadcast Ye s
Page Retransmission No
Rotation TX No
Rotation RX No
Fax Forwarding
(FAX to FAX)
Ye s
Fax Forwarding To
Email
Yes (by on-ramp gateway function)
PC-FAX Yes (Tx only)

16 /
1. Configuration
Category Item MC770 MC780
Security Function Junk Fax Protection No
Memory Only
Reception
Yes (High security mode)
ID Check TX No
Double input for
dialing number
Yes (can be switched by service person)
Access Control Ye s
Telephone &
Convenience
Function
External handset No
Dialing by Ten key Ye s
One touch Dial No
Speed Dial Yes (3000 Locations)
Group Dial Yes (200 Groups)
Automatic Alternate
Selecting Call
No
Auto Redial Ye s
Manual Redial No
On-Hook Dial by
HOOK key
Yes (with monitor key)
Chain Dial Ye s
Automatic Pause-
signal insertion
No
Auto Rx Ye s
Manual Rx Ye s
FAX/TEL Automatic
Switching
Ye s
ANS/FAX Automatic
Switching
No
Remote RX Ye s
Sender ID Ye s
Personal ID No
Session No. Ye s
TSI Time Date print Ye s
Acoustic Monitor Ye s
Category Item MC770 MC780
Fax Local Print
Function
Activity Report Yes (Transmission /Reception Journal)
Message
Confirmation
Report
(Single Location)
Yes (Transmission Report)
Message
Confirmation Report
with top of
document
(Single Location)
Yes (Transmission Report)
Message
Confirmation
Report(Broadcast)
Ye s
Broadcast Entry
Report
No
Speed Dial List Yes (Phone Book List)
Fax Configuration
List
Ye s
Protocol Dump Print Ye s
Power Down Report No

17 /
1. Configuration
Internet Fax
Category Item MC760 MC770 MC780
General
Function
Compatibility T.37 (Simple Mode)
T.37 (Direct SMTP Mode)*
*by Service Code Setting
Transmission
Ability
Letter / Legal
Reception Ability Letter /unlimited
Fax Resolution 8 x 3.85 dots/mm, 8x 7.7 dots/mm
16 x 15.4 dots/mm (Direct SMTP mode only)
Contrast Control Auto or manual (11 Level)
Send Fax from
RADF
(duplex
document)
Ye s
Mixed Reading
For ADF/FBS
Ye s
Auto reduction
printing of the
FAX
No
Fixed reduction
printing of the
FAX
No
Page division
print
No
Dual Access Ye s
Coding Scheme MH
Attachment file
format
Tiff-S Only
Tiff-F (only A3, B4 & A4)*
*Direct SMTP Mode Only"
Memory
Capacity
1GB (HDD model)
Image Battery
Back Up
Yes (HDD)
Communication
Function
Memory Tx/Rx Ye s
Delayed
Transmission
No
Broadcast Ye s
Delayed
Broadcast
No
Rotation TX No
Rotation RX No
Fax Forwarding Yes (send to network folder/E-mail/Internet-Fax/
Analog-Fax)
PC-FAX Ye s
Category Item MC760 MC770 MC780
Security
Function
Junk Fax
Protection
No
Memory Only
Reception
No
ID Check TX No
Double input for
dialing number
No
Access Control Ye s
Telephone &
Convenience
Function
Dialing by
keyboard
Ye s
One touch Dial No
Speed Dial Ye s
Group Dial No
Sender ID No
Personal ID No
TSI Time Date
print
No
Fax Local Print
Function
Activity Report Ye s
Message
Confirmation
Report
(Single Location)
Ye s
Message
Confirmation
Report
with top of
document
(Single Location)
Ye s
Error Report Ye s
Message
Confirmation
Report
(Broadcast)
No
Broadcast Entry
Report
No
Speed Dial List Ye s
Power Down
Report
No

18 /
1. Configuration
1.5 Specification of interface
1.5.1 Specification of USB interface
1.5.1.1 General of USB interface
(1) Spec.
USB (Support Hi speed USB )
(2) Transmission mode
Full speed (Maximum 12Mbps 0.25%)
High speed(Maximum 480Mbps 0.05%)
(3) Power control
Self power device
1.5.1.2 Connector and cable of USB interface
(1) Connector
• Printer side: B Receptacle (female)
Up-stream port
UBB-4R-D14C-4D(LF)(SN) (JST Mfg. Co.,Ltd) or equivalent
Connector pins array
(2) Cable
The length of the cable: the cable of less than 5m with USB 2.0 spec.
(Less than 2m is recommended)
(Please use the shielded wire for the cable.)
1.5.1.3 USB interface signal
Signal name Function
1 Vbus Power (+5V)
2 D- For data transmission
3 D+ For data transmission
4 GND Signal Ground
Shell Shield
• Cable side: B plug(male)
2
34
1

19 /
1. Configuration
1.5.2 Specification of network interface
1.5.2.1 General of network interface
Spec.
Network Protocol
TCP/IP sepc. Network layer
ARP, IP, ICMP, IPv6, IPSec
Transfer layer
TCP, UDP
Application layer
LPR, Port9100, FTP, HTTP, HTTPS, IPP, SNMPv1/v3, TELENET,
DHCP/BOOTP, DNS, DDNS, WINS, UPmP, Bonjour, SNTP,
SMTP, POP, Windows Rally (WSD Print, LLTD).
NBT/NetBEUI: SMB, NetBIOS, NetBIOS over TCP
Netware: Remote printer mode(Maximum 8 print sever )
Print sever mode (Maximum 8 files sever: 32 queue)
For encrypted password (when it is print sever mode)
NetWare6J/5J/4.1J (NDS, bindery)
SNMP
EtherTalk: ELAP, AARP, DDP, AEP, NBP, ZIP, RTMP, ATP, PAP
IEEE802.1X: EAP-TLS, PEAP
1.5.2.2 Connector and cable of network interface
(1) Connector
1000BASE-T/100BASE-TX/10BASE-T
(Auto switch, cannot be used simultaneously)
Connector pins array
18
(2) Cable
Non-shield twisted-pair cable with RJ-45 connector
(Category 6 is recommended)
1.5.2.3 Signal of network interface
(1) 10/100Base-T
Pin No. Signal name Direction Function
1 TXD+ FROM PRINTER Transmission data +
2 TXD- FROM PRINTER Transmission data -
3 RXD+ TO PRINTER Receive data +
4 − − Not use
5 − − Not use
6 RXD- TO PRINTER Receive data -
7 − − Not use
8 − − Not use
(2) 1000Base-T
Pin No. Signal name Direction Function
1 TRD+(0) bi-direction Data0+ transmission and reception
2 TRD-(0) ↑Data0-transmission and reception
3 TRD+(1) ↑Data1+ transmission and reception
4 TRD+(2) ↑Data2+ transmission and reception
5 TRD-(2) ↑Data2-transmission and reception
6 TRD-(1) ↑Data1- transmission and reception
7 TRD+(3) ↑Data3+ transmission and reception
8 TRD-(3) ↑Data3-transmission and reception

20 /
1. Configuration
1.5.3 Telephone Line Interface Specification
1.5.3.1 Outline of telephone Line Interface
The machine will reliably communicate with distant stations over voice-level telephone
line.
1.5.3.2 Telephone Line Interface Connector and Cable
Connector Type : RJ-11
Cable Type : TEL Cable (With RJ-11 plug)
Connector contact arrengement
1.5.3.3 Telephone Line Interface signal
Contact No. Functions
TEL A1 Unspecified
A2 Unspecified
A3 TCP
A4 TCP
A5 Unspecified
A6 Unspecified
LINE B1 Unspecified
B2 Unspecified
B3 TCP
B4 TCP
B5 Unspecified
B6 Unspecified
TCP : Terminal Connection Point
A1A6 B1 B6
TEL LINE
1.5.4 USB Host Interface
1.5.4.1 Outline of USB Host Interface
(1) Basic Specification
USB
(2) Transmission Mode
Hi Speed (480Mbps±0.05% max.)
(3) Supply Power
Max. 500mA
(4) Connection devices
USB memory
1.5.4.2 USB Host Interface Connector
USB A plug connector
Connector pin arrangement
1.5.4.3 USB Host Interface Signal
Name of Signal Function
1 Vbus Power Supply (+5V)(red)
2 D - Data transmission (white)
3 D + Data transmission (green)
4 GND Single ground (black)
Shell Shield
4321