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All in One Printer
MB471
Maintenance manual
Oki MB471 Maintenance Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
1 Configuration
System Configuration
Structure of MFP
Offer of Options
Specifications
Printer Section Specifications
Network Specifications
Copy Function
Fax Specification
Internet Fax
Report Print
Print from Usb Memory
Interface Specifications
Usb Interface Specification
Network Interface Specification
Usb Host Interface
Wireless Lan Interface(Mb451W/Mb471W)
Operational Explanation
Electrophotographic Process Mechanism
Printing Process
Toner Entrance Detection
Toner Sensor Detection Principle
Toner Count Principle
Image Scanning Process
Structure and Process of RADF
Cross-Section View
Electrical Configuration
Fundamental Operations
Document Detection
Jam Detection
Document Table Structure
Overview
Carraige-Assy Drive Mechanism
Exposure Block
Mfp Installation
Precautions and Prohibition
MFP Unpacking Procedure
MFP Installation Instructions
Packed Units and Attachments
Assembly Procedure
MFP Main Body
Loading Documents on the Document Glass
Power Cable Connection
Installation of Optional Components
Second Tray Unit
Configuration
Network Information Print
Connection Procedures
Checking of User Paper
4 Replacement of Parts
Notes on Replacement of Parts
Maintenance Tools
Part Replacement Procedure
Cover Side (L)
Cover Side(R) / SD Card
Board 98M
PWR Unit
Cover Stay(R) / Cover Stay(L)
Cover Front (Top)
SW Assy
Scanner Unit
Tray-Assy-Document / Cover-ADF-R-Assy
ADF-Unit
Sheet-Document / Paper-Weight-Assy / Spring-PW-ADF
Hinge-Assy-L / Hinge-Assy-R
Cover-ADF-F / Guide-Assy-Exit-Sub / ADF-Assy / ADF Board (MHD)
Cover-Assy-Top-ADF / Guide-Assy / Roller / Motor / Clutch / Solenoid
Cable (ADF-Rev SNS)
Guide-A-Sub / Frame-Assy-Separator / Spring-Separator / Rubber-Friction
Cable (ADF-Reg SNS)
Frame-Assy-OP
Frame-OP-Panel / OPE Board (Except MB441/MB461/MB461+LP/ES4161 MFP)
Frame-OP-Panel / OPE Board (MB441/MB461/MB461+LP/ES4161 MFP)
LCD-Assy
Frame-Assy-FB
How to Remove Battery (SU Board MHE)
Frame-Assy-Hopping-ADF
Plate Stay L / Plate Assy Stay R
Frame-Assy-TR
LED Head
DC Motor
Duplex Belt Assy
Hopping Clutch / MPT Clutch / Regist Clutch
HV-Board / Motor-FAN
Cover Assy Stacker
Stacker Cover
Fuser Assy
MPT Assy, Manual Assy
Cover Assy Rear
Guide Eject Lower Assy
Eject Motor
Plate Side R Assy / Plate Side L Assy / Front Assy
Plate Side L Assy
Plate Side R Assy
Front Assy
Roller Feed Assy
Lever in Sensor / Lever WR Sensor / Photo Interrupter
Paper Feeding Roller (Roller-Pick-Up, Roller-Feed-NOW, Roller-Assy-MPT)
Frame-Assy-Retard, Spring-Retard
W-LAN Board ( for Mb471W Only)
5 Lubrication Point
Printer
Scanner
Maintenance Menus
Maintenance Menu
Service Menu
Service Bit Menu
Maintenance Utility
Maintenance Utility
Self-Diagnostic Mode
Ordinary Self-Diagnostic Mode (Level)
Switch Pressing Function When Power Supply Is Turned on
Settings after Parts Replacement
Precautions Prior to Repair
Items to be Checked Prior to Taking Action on Abnormal Images
Precautions When Taking Action on Abnormal Images
Preparations for Troubleshooting
Troubleshooting Method
Lcd Messages List
Service Call List
Fax Error List
Email/Internet FAX/FAX Server Error List
8.5.5 Preparing for Troubleshooting
Preparing for Troubleshooting
LCD Display Trouble
LCD Displays Nothing
Display of OKI Logo
Error Message Display
Abnormal MFP Operation after Powered on
No Operation
Abnormal Sound
Abnormal Odor
Slow Starting Time
Checking Error Messages
Clearing Paper Jams
Paper Jams
Paper Feed Jam (Error Code 391: 1St Tray)
Does a Jam Error Occur When Turning on the Power
Jam Occurs Immediately after the Paper Feed Is Started. (1St Tray)
Feed Jam (Error Code 380, 381)
Jam Occurs Immediately after the Power Is Turned on
Jam Occurs Immediately after the Paper Feed Is Started
Paper Feed Jam (Error Code 390: Multipurpose Tray)
Does a Jam Error Occur When Turning on the Power
Jam Occurs Immediately after Paper Feed Is Started
Multipurpose Tray
Paper Running Jam (Error Code 381:)
Jam Occurs Immediately after the Power Is Turned on
Jam Occurs Immediately after the Paper Feed Is Started
Two-Sided Printing Jam (Error Code: 370, 371, 372, 373, 383)
Two-Sided Printing Jam
Fuser Unit Error (Error 170 to 177)
Error Occurs Immediately after the Power Is Turned on
Error Occurs Approx. 1 Minute after the Power Is Turned on
Paper Size Error (Error Code 400)
Motor Fan Error (Error Code 120, 127, 128)
The Low Voltage Power Supply Fan Does Not Rotate Immediately after the Power Is Turned on
All Fans of the Printer Do Not Rotate
Print Speed Is Slow. (Performance Is Low.)
Print Speed Decreases
LED Head Cannot be Recognized. (Error Code 131, 132, 133, 134)
Service Call 131 to 134 (LED HEAD Missing)
Option Unit Cannot be Recognized
Option Try Unit Cannot be Recognized
Toner Cartridge Cannot be Recognized. (Error Code 540, 541, 542, 543)
Error Caused by the Consumable Items
Error Caused by the Toner Sensor
Error Caused by the Defective Mechanism
Fuse Cut Error (Error Codes 153 to 155)
Humidity Sensor Error (Error Code 123)
Print Troubleshooting
Response after Flash Compulsive Initialization
Copy Image Abnormality Error Troubleshooting
Network Troubleshooting
Wireless Troubleshooting
Fuse Checking
Check of Resistance Values
Layout of Parts
Firmware Information
Instruction of Fw Update
Rom Control Numbers
Checking and Indication of the Revision Number
Stamp of Maintenance Board Indication
10 Appendix
List of Initialized Range
Maintenance Manual for Second Tray Unit
Overview
Exterior and Parts Name
Function
Description for Operation of Second Tray Unit
Part Replacement
Precautions on Replacing Parts
Arrangement of Parts
How to Replace Parts
Cleaning of Paper Feed Roller and Separation Roller
Procedure for Troubleshooting
Precautions for Troubleshooting
Preparation before Troubleshooting
Connection Diagram
Board Arrangement
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Quick Links
1
Fuser Assy
2
Maintenance Menu
Download this manual
See also:
User Manual
MB461 / MB471 / MB491 /
MB491+ / MB491+LP/ MPS4200mb /MPS4700mb
Maintenance Manual
031314C
Table of
Contents
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Chapters
Table of Contents
4
Operational Explanation
36
Mfp Installation
52
Maintenance Menus
156
8.5.5 Preparing for Troubleshooting
230
Table of Contents
Troubleshooting
Precautions prior to repair
194
Troubleshooting method
195
Preparing for troubleshooting
230
Print Troubleshooting
257
Response after Flash compulsive initialization
262
network troubleshooting
263
wireless troubleshooting
264
Procedure for Troubleshooting
300
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