Oki MC770 Oki MC780 Oki MPS3537mc Oki MPS4242mc Service Manual

Accurate, clear and concise text, combined with detailed illustrations, lists of error code, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your copier, printer or scanner.
Present service manual Oki MC770 Oki MC780 Oki MPS3537mc Oki MPS4242mc contain clear instructions and procedures on how to fix the problems occurring in your equipment.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your equipment.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:

1.1 System configuration
1.2 The Configuration of printer
1.3 Optional parts
1.4 Specifications
1.5 Specification of interface
1.5.1 Specification of USB interface General of USB interface Connector and cable of USB interface USB interface signal
1.5.2 Specification of network interface General of network interface Connector and cable of network interface Signal of network interface
1.5.3 Telephone Line Interface Specification Outline of telephone Line Interface Telephone Line Interface Connector and Cable Telephone Line Interface signal
1.5.4 USB Host Interface Outline of USB Host Interface USB Host Interface Connector USB Host Interface Signal
1.5.5 Specification of ACC interface

2.1 Electrophotographic processing mechanism
2.2 Printing process
2.3 Image Scanning process
2.3.1 Structure and process of RADF Cross-section view Electrical configuration Fundamental operations Document detection Jam detection
2.3.2 Document table structure Overview Exposure block Carraige-Assy drive mechanism

3.1 Notes and precautions
3.2 Unpack method
3.3 Setting method
3.4 List of equipments and accessories
3.5 Assembling method
3.5.1 Assemble the main body of the MFP
3.5.2 Cable connect
3.5.3 Optional part installation and confirmation
3.6 Setting content print (Configuration)
3.7 Connecting method
3.8 User used Paper confirmation

4.1 Precautions on component replacement
4.2 Method of component replacement
4.2.1 Belt unit
4.2.2 Fuser unit
4.2.3 Right side cover
4.2.4 Left side cover
4.2.5 Scanner unit
4.2.6 Faceup tray
4.2.7 Rear cover
4.2.8 LED Assy/ LED Assy spring
4.2.9 CU/PU PCB/Low voltage power supply
4.2.10 Stay-R
4.2.11 Plate-Board-R Assy/Guide-Cable Power Low
4.2.12 Top cover Assy
4.2.13 Top cover
4.2.14 Frame Assy Top Front
4.2.15 Board MFH
4.2.16 Hopping motor/ Fuse motor
4.2.17 Guide eject Assy/ Color regist Assy/ Board-IBY
4.2.18 FAN(Fuser) / Belt motor/ High-voltage board/ Cover open switch
4.2.19 MPT Assy
4.2.20 Cover Assy front/ Board-RSF/MPT hopping roller/ Frame Assy separator/
Feeder Assy regist
4.2.21 Plate-Driver/ Shaft-Liftup/ Hopping cover
4.2.22 Plate-Assy-Side R/ Plate-Assy-Side L
4.2.23 Feed roller
4.2.24 Eject sensor/Micro-SW
4.2.25 Antenna (for wireless model only)
4.2.26 Finisher (for finisher model only)
4.2.27 Stapler (for stapler model only)
4.2.28 Tray-Assy-Document/Cover-ADF-R
4.2.29 ADF-unit
4.2.30 Sheet-document / Paper-weight-Assy / Spring-PW-ADF
4.2.31 Hinge-Assy-L / Hinge-Assy-R
4.2.32 ADF-Assy
4.2.33 Guide-Retard / Roller / Motor / Clutch / Solenoid
4.2.34 Guide-Assy-Retard
4.2.35 Flatbed-Unit
4.2.36 Frame-assy-FB
4.3 Oiling spots

5.1 System maintenance menu (for maintenance engineer)
5.2 Maintenance menu functions
5.2.1 Self-diagnostic mode Operation panel Ordinary self-diagnostic mode (level 1) Switch scan test Motor clutch test Test print Color registration correction test Density correction test Consumable item counter display Number of print copies counter display Switching between the Factory mode and the Shipping mode Self-diagnostic function setting LED head serial number display NVRAM parameter setting
5.2.2 Various prints with the printer as a standalone unit
5.2.3 Functions of keys at power on
5.2.4 How to enter the Scanner Maintenance Menu
5.3 Setups upon completion of part replacement
5.3.1 Precautions when replacing the PU board
5.4 Density control manual setting

6.1 Cleaning
6.2 How to clean the LED lens array
6.3 How to clean the pickup roller
6.4 How to clean the paper feed rollers for MP Tray
6.5 How to clean the rollers in the ADF
6.6 How to clean the document glass
6.7 How to clean inside of MFP

7.1 Before starting the repair work
7.2 Confirmation items before taking corrective action against abnormalities
7.3 Precautions when taking corrective action against abnormality
7.4 Preparation for troubleshooting
7.5 Troubleshooting method
7.5.1 Error code list
7.5.2 Printer error troubleshooting
7.5.3 Scanner error troubleshooting
7.5.4 Preparation for troubleshooting
7.5.5 Troubleshooting the abnormal images
7.6 Fuse check
7.7 Paper cassette switches versus Paper size correspondence table

8.1 Resistance value check
8.2 Parts location