Oki ES3640 MFP User manual

ES3640MFP / CX3641MFP
Service & Troubleshooting Guide
©2008 OkiData Americas, Inc.
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. While all reasonable efforts have been made to make this document 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. For the most up-to-date service information
available, visit our website at www.okidata.com © Okidata Americas, Inc. 2008

Contents
Chapter 1
Printer Maintenance Procedures
1.1 Service Maintenance Procedures
1.2 Cleaning the Printer
1.3 Cleaning the Imaging Unit Contacts
1.4 Cleaning the LED Heads
1.5 Cleaning the Feed Rollers

Chapter 2
User Menu and Adjustments
2.1 Accessing the User Menu
Main Menus Sub Menus
Configuration Print Page Count • Finisher Count • Supplies Life
Network • Paper Size in Tray • System
Print Pages Print Pages
Suspend Printing
Resume Printing
Print Secure Job Print Secure Job
Menus Tray Configuration • System Adjust
Shut Down
Admin Setup Admin Setup
Calibration Exit Calibration • Auto Density Mode
Auto BG Adjust Mode • Adjust Density
Adjust Registration • Setup Calibration
Calibrate • Remove Calibration
Print Statistics Statistics Menu • Log Size • Reset Counter
Change Password
Service Modes and Adjustments
2.2 Accessing Service Mode
2.3 Service Diagnostics Controls
2.4 The Motor & Clutch Test
2.5 The Switch Scan Test
2.6 Service Adjustments
Removing the calibration for the Copier Screen
Calibrating the Printer / Copier Screen
Using Command WorkStation to Calibrate the Printer / Copier Screen
Calibrating the Auto Media Detection Sensor

Chapter 3
Troubleshooting Print Quality
3.1 An Overview of Print-Quality Problems
Print-Quality Problems Overview
Defects Associated with Specific Printer Components
3.2 Generating and Analyzing Test Prints
Generating and Analyzing Control Panel Test Prints
Generating and Analyzing Service Test Prints
Generating and Analyzing Print Engine Test Prints
3.3 Print-Quality Troubleshooting Practices
Light Prints in All Colors
Light Print in Only One Color
Blank Prints
Mottled or Splotchy Prints
Unexpected Colors
Repeating Bands, Lines, Marks, or Spots
Random Bands, Lines, Marks, or Missing Spots
Random Spots
Background
Ghosting or Hot Offset
Incomplete Fusing or Cold Offset
Mis-Registration, Color Layers Not Correctly Registered
Toner on Back of Print
Image Not Centered or Positioned Correctly
Process Direction Bands, Voids, or Streaks
Scan Direction Bands, Voids, or Streaks
Scan Direction Dark Streaks
Process Direction Lines or Streaks

Chapter 4
Troubleshooting Paper Jams
4.1 Paper Jam Error Code Table
4.2 Jam Troubleshooting
Code 370: Paper Jam Occurred in the Duplex (Rear)
Code 371: Paper Jam Occurred in the Duplex (Middle)
Code 372: Paper Jam Occurred in the Duplex (Front Cover)
Code 373: Paper Jam Occurred in the Duplex (Rear)
Code 380: Paper Jam Occurred in the Paper Path (Side Cover)
Code 381: Paper Jam Occurred in the Paper Path (Under Drums)
Code 382: Paper Jam Occurred in the Paper Path (Top Cover Fuser)
Code 383: Paper Jam Occurred in the Paper Path (Top Cover Fuser/Duplex)
Code 384: Paper Jam Occurred in the Paper Path (Top Cover Fuser/Exit)
Code 390: Paper Jam Occurred during Paper Feed (MPT)
Code 391: Paper Jam Occurred during Paper Feed (Side Cover or Tray1)
Code 392: Paper Jam Occurred during Paper Feed (Side Cover or Tray2)
Code 393: Paper Jam Occurred during Paper Feed (Side Cover or Tray3)
Code 394: Paper Jam Occurred during Paper Feed (Side Cover or Tray4)
Code 400: Incorrect Size Paper has been Used (Side Cover)
Code 401: Multiple Sheets of Paper were Fed (Side Cover)
User Clearable Errors 631 through 649

Chapter 5
Troubleshooting Self Diagnostic Codes
5.1 Self Diagnostic Error Codes
Self Diagnostic Error Codes (Printer)
Self Diagnostic Error Codes (Scanner/ADF)
Self Diagnostic Error Codes (Finisher)
Self Diagnostic Error Codes (Other Codes)
5.2 General Troubleshooting
No Control Panel Display
Control Panel LED is on, No Control Panel Display
Printer does not appear to Operate at Power On.
Printer Continually Displays “Warming Up” or “Initializing”
Troubleshooting AC Power Supply
Troubleshooting DC Power Supply
Troubleshooting RAM Memory Failures
Paper Size Errors
5.3 Troubleshooting Error Codes
Fuser Failure
Environmental Sensor Failure
Motor Overheating Failure
Engine Control Board Failure
LVPS Power Supply Failure
Fiery Controller Fan Failure
Power Supply Fan Failure
Fan Failure
Duplex Interface Failure
Tray 2, 3, 4 Communication Errors
Inverter Unit Interface Failure
Cyan, Magenta, Yellow, Black LED Failure
Fuser Fan Failure
Fuser 110V/220V Mismatch Error
Unsupported Duplex Unit Rom
Fuse Cut Error (Fuser)
Fuse Cut Error (Transfer Belt Unit)
Fuse Cut Error C, M, Y, K Imaging Drum Unit
Fiery Controller to Engine Board Communication Failure
Finisher Interface Error
Inverter Power Supply Failure
Control Panel Communication Failure
Error in the Transfer Belt
C, M, Y, K Imaging Drum Unit Failure
Engine Board Flash Memory Error
Unsupported ROM
Toner Sensor Detection Error
MT Home Position Detection Error
Toner Feed Switch Error/Toner Lock Error
Color Up/Down Error
Top Cover Open Error
Fuser Unit Detected as Missing
Image Drum Unit Life Error
Fuser Life Error
Belt Life Error
Toner Out Error

Chapter 1
Printer Maintenance Procedures
1.1 Service Maintenance Procedures
Perform the following procedures whenever you check, service, or repair the printer. Cleaning the
printer, as outlined in the following steps, assures proper operation of the printer and reduces the
probability of having to service the printer in the future. The frequency of use, Average Monthly
Print Volume (AMPV), type of media used, and operating environment are factors in determining
the frequency of this maintenance procedure. Be sure to record the number of sheets printed
between each service visit and attach the PS test page, Demo Page, and configuration sheets to
your service log for future reference.
Recommended Tools
•Toner vacuum cleaner
•Laptop computer with:
(Windows XP)
(Current Model Print Drivers)
(Current Command Workstation loaded)
(Kodak Calibration Pack)
•Clean, dry, lint-free cloth
•Black, light protective bag
Perform these routine maintenance procedures during the course of servicing the printer.
•Clean the feed rollers, exit rollers, and guides; replace as necessary.
•Remove and clean all paper trays.
•Clean the Color Registration and Automatic Density Control Sensors.
•Check cleanliness of interior and exterior, including fans; clean as necessary.
•Check the print engine and Fiery Controller firmware version located on the first page of the
configuration sheet. Update as necessary.
•Print a PS test page and Demo page, diagnose, and repair any problems as indicated.
•Perform the Printer / Scanner calibrations in Chapter 2.
•Review proper printer operation using a customer file, if possible. Check with the customer
regarding any special applications they may be running.
•Review with the customer all work that was performed; and discuss proper printer care and
the importance of properly using the shut down sequence to prevent Hard Drive
issues.

1.2 Cleaning the Printer
Perform the following general cleaning steps as indicated by the printer’s operating environment.
Caution
Never apply alcohol or other chemicals to any parts in the printer. Never use a damp cloth to clean
up toner. If you remove the Image Drum Units, place them in a light protective bags or similar
means to protect the drums as exposure to light can quickly degrade performance and result in
early failure.
1. Record number of sheets printed on a service log left with the printer.
2. Print several sheets of paper to check for problems or defects.
3. Turn off the printer.
4. Clean all fans to remove excess dust.
5. Ensure that all cover vents are clean and free of obstructions.
6. Remove any debris or foreign objects from the Transfer Unit, Fuser, and Imaging Units.
7. Vacuum loose toner from the printer interior using a Type II toner vacuum only.
8. Remove and clean the paper trays.
9. Clean / inspect all rubber rollers with a lint-free cloth slightly dampened with cold water.
Replace as necessary.
1.3 Cleaning the Imaging Unit Contacts
1. Open the Top Cover.
2. Remove the Imaging Units and place it on a stable surface.
3. Working quickly to reduce light exposure, clean the 4 contacts at the front of the Imaging Unit.
4. Clean the 3 contacts at the rear of the imaging unit.
5. Clean the contacts on the Housing Bias Assembly.

1.4 Cleaning the LED Heads
Clean the LED Head if a vertical White band or White stripe appears on the print.
Caution
Always use a soft, dry, lint-free cloth to clean the LED Heads. Never use solvents to clean the lens.
1. Open the Top Cover.
2. Clean each LED Head with a clean, lint- free cloth.
1.5 Cleaning the Feed Rollers
Clean the accumulated dust from the Feed Rollers.
Caution
Use care not to scratch or otherwise abrade the roller surface while cleaning. Gently rub the
roller surface using a soft, lint-free cloth moistened with water.
1. Access the rollers by removing Tray 1 or opening the MPT tray.
2. Clean each roller with soft, lint-free cloth moistened with water.
Tray 1 Rollers MPT Tray Rollers

Chapter 2
User Menu and Adjustments
2.1 Accessing the User Menu
Press the menu up arrow to access the User Menu.
User Mode Menus
Main Menus Sub Menus
Configuration Print Page Count • Finisher Count • Supplies Life
Network • Paper Size in Tray • System
Print Pages Print Pages
Suspend Printing
Resume Printing
Print Secure Job Print Secure Job
Menus Tray Configuration • System Adjust
Shut Down
Admin Setup Admin Setup
Calibration Exit Calibration • Auto Density Mode
Auto BG Adjust Mode • Adjust Density
Adjust Registration • Setup Calibration
Calibrate • Remove Calibration
Print Statistics Statistics Menu • Log Size • Reset Counter
Change Password
Functions
*Configuration
Print Pages
Suspend Printing
Resume Printing