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MC873dn
Maintenance manual
Oki MC873dn Maintenance Manual
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Manual
(32 pages)
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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
Copy Specifications
Scan Specifications
Fax Specifications
Other Specifications
Paper Handling
Scanner Section
Interface Specifications
Network Interface Specification
Telephone Line Interface Specification
Wireless LAN Interface
2 Troubleshooting Procedures
Precautions Prior to Repair
Troubleshooting Method
Inspection List
Fax Error List
Email/Internet FAX/FAX Server Error List
2.5.5 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
Any Operation Does Not Start at All
Abnormal Sound Is Heard
Bad Odors Are Generated
Rise-Up Time Is Slow
Checking Error Messages
Clearing Paper Jams
Paper Jams
Paper Feed Jam
(Error Code 391: Tray1 , 392: Tray2 , 393: Tray3 , 394: Tray4)
Jam Occurs Immediately after the Power Is Turned on
Jam Occurs Immediately after the Paper Feed Is Started
Feed Jam (Error Code: 380, 381, 382, 383, 384, 385, 389)
Jam Occurs Immediately after the Power Is Turned on
Jam Occurs Immediately after the Paper Feed Is Started
Paper Unloading Jam Occurs after a Paper Is Taken into Printer
Paper Unloading Jam Occurs in the Middle of Paper Running Path
Paper Feed Jam (Error Code 390: Multipurpose Tray)
Jam Occurs Immediately after the Power Is Turned on
Multipurpose Tray
Jam Occurs Immediately after Paper Feed Is Started
Two-Sided Printing Jam (Error Code: 370, 371, 372, 373)
Two-Sided Printing Jam Occurs Immediately after the Power Is Turned on
Two-Sided Printing Jam Occurs During Taking in the Paper into Duplex Unit
Two-Sided Printing Jam Occurs During Transporting Paper Inside the Duplex Unit
Paper Is Not Supplied from the Duplex Unit to the Regist Roller
Displayed 「ADF Document Jam
Jam Occurs at ADF Unit
ID Unit Up/Down Error (Service Call 142)
Error Occurs During the up Movement of the ID Unit
Error Occurs During the down Movement of the ID Unit
Paper Size Error (Error Code: 400 and 401)
Printing was Stopped When Paper Ejected after Paper Size Error Detected
Fuser Unit Error (Error Code: 167 to 177)
Error Occurs Immediately after the Power Is Turned on
Error Occurs Approx. 1 Minute after the Power Is Turned on
Motor Fan Error (Error Code: 122, 127, 128, 918)
The Low Voltage Power Supply Fan Does Not Rotate Immediately after the Power Is Turned on
Duplex Fan Does Not Rotate During the Duplex Printing
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 and 134)
Errors 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 and 543)
Error Caused by the Consumable Items
Error Caused by the Toner Sensor
Error Caused by the Defective Mechanism
Fuse Cut Error (Error Code: 154 and 155)
Fuse Cut Error
Humidity Sensor Error (Error Code: 123)
Humidity Sensor Error
2.5.6 Troubleshooting the Abnormal Images
Troubleshooting the Abnormal Images
Color Has Faded-Out and Blurred Entirely. (Refer to Figure 2-1 A.)
Color Are Faded-Out and Blurred
Stain on White Print. (Refer to Figure 2-1 B.)
Stain on White Print (Partial Stain)
Stain on White Print (Overall Stain)
White Print (Refer to Figure 2-1 C.)
White Print over Entire Page
Black Banding/Black Streaking in Vertical Direction
Periodic Abnormalities (Refer to Figure 2-1 E.)
Periodic Abnormality Occurs in Vertical Direction
Thin Vertical Line (with Color) (Refer to Figure 2-1 D.)
Thin Vertical Line (Without Color) (Refer to Figure 2-1 F.)
Significant Color Misregistration
Color Misregistration Occurs
Thought REG ADJUST TEST of Engine Maintenance Function Results Ok, Color Misregistration Occurs
Solid Black Printing
Solid Black Printing over the Whole Page
Copy Image Abnormality Error Troubleshooting
Response after Flash Compulsive Initialization
Network Troubleshooting
Wireless Troubleshooting
Fuse Checking
Paper Cassette Switches and Paper Size Correlation Table
Maintenance Menus
Maintenance Menu
Service Bit Menu
Maintenance Utility
Self-Diagnostic Mode
Operator Panel
Normal Self-Diagnostic Mode (Level 1)
Entering Self-Diagnostic Mode (Level 1)
Exiting Self-Diagnostic Mode
Switch Scan Test
Motor and Clutch Test
Test Print
Color Registration Adjustment Test
Density Adjustment Test
Consumable Counter Display
Print Counter Display
Factory-Shipping Mode Switching
Self-Diagnostic Function Setting
LED Head Serial Number Display
Drum Manual Cleaning
Functions of Buttons after Power-On
Setup after Part Replacement
Notes on CU/ PU Board Replacement
Notes on HDD Replacement
Manual Density Adjustment Setting
Guide-Retard / Cover-Assy-Top-ADF / Motor /CONN Coard / Clutch Photo-Sensor
4 Replacement of Parts
Front Cover Assy
Frame Assy.-Front
Roller Assy.-Registration
Roller-Feed, Roller-Pickup, Frame Assy.-Pickup,And Holder Sensor Assy
Low-Voltage Power Supply Assy
Motor Assy.-Belt and Motor Assy-ID
Motor DC-FU (Fuser Motor) / Plate Cover FU
Guide Assy.-Side-L / Rack-L
Guide Assy.-Side-R / Rack-R
Cassette Assy
Plate-Stay(L)
Plate-Stay(R) / Plate-Board-R-Assy / Plate-Support(Stay)
Regular Maintenance
Cleaning
5 Regular Maintenance
Cleaning of LED Lens Array
Cleaning the Feed Rollers and the Retard Roller
Cleaning the MPT Feed Rollers
Cleaning Rollers in the ADF
Cleaning the Rollers Inside of the ADF
Cleaning the Document Glass
6 Connection Diagrams
Connection Diagram
Board Layout
Resistance Value
Firmware Information
Maintenance Board Indication Stamp
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Quick Links
1
Maintenance Menu
2
Replacement of Parts
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MC873dn / ES8473 MFP
Maintenance Manual
041315A
Table of
Contents
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Chapters
Table of Contents
4
2.5.5 Preparing for Troubleshooting
65
2.5.6 Troubleshooting the Abnormal Images
98
Maintenance Menus
110
Regular Maintenance
240
Table of Contents
Troubleshooting
TROUBLESHOOTING PROCEDURES
26
Troubleshooting method
28
Preparing for troubleshooting
65
Troubleshooting the abnormal images
98
Response after Flash compulsive initialization
105
Network Troubleshooting
106
Wireless Troubleshooting
107
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