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Table of Contents

Troubleshooting

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Page 1 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.
Page 2: Table Of Contents
Contents Chapter 1 Printer Maintenance Procedures Service Maintenance Procedures Cleaning the Printer Cleaning the Imaging Unit Contacts Cleaning the LED Heads Cleaning the Feed Rollers...
Page 3 Chapter 2 User Menu and Adjustments 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...
Page 4: Troubleshooting Print Quality
Chapter 3 Troubleshooting Print Quality An Overview of Print-Quality Problems Print-Quality Problems Overview Defects Associated with Specific Printer Components 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 Print-Quality Troubleshooting Practices Light Prints in All Colors Light Print in Only One Color...
Page 5: Troubleshooting Paper Jams
Chapter 4 Troubleshooting Paper Jams 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)
Page 6: General Troubleshooting
Chapter 5 Troubleshooting Self Diagnostic Codes 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) General Troubleshooting No Control Panel Display Control Panel LED is on, No Control Panel Display Printer does not appear to Operate at Power On.
Page 7: Printer Maintenance Procedures
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.
Page 8: Cleaning The Printer
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.
Page 9: Cleaning The Led Heads
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. Open the Top Cover.
Page 10 Chapter 2 User Menu and Adjustments 2.1 Accessing the User Menu Press the menu up arrow to access the User Menu. Functions *Configuration Print Pages Suspend Printing Resume Printing User Mode Menus Main Menus Sub Menus Configuration Print Page Count • Finisher Count • Supplies Life Network •...
Page 11: Finisher Count
Configuration Print Page Count Item Description Displays the total number of printed pages. Total Page* Must be enabled in printer service mode. Displays the number of color printed pages converted to letter equivalent. Color Page Monochrome Page Displays number of monochrome printed pages converted to letter equivalent. Tray 1,2,3,4,MP Displays the Total Pages from each Tray Finisher Count...
Page 12 Network The items and settings displayed are specific to your system. Full details are given in the Configuration Guide. Information given is also available on the printed configuration sheets. Paper Size in Tray Item Description Displays detected paper size of selected Tray Tray Displays detected paper size of the MP Tray.
Page 13: Resume Printing
Prints FTP log. Usage Report* Prints a usage report. (must be activated from the Print Statistics menu) Statistics Log Prints Oki job log details. Error Log Prints the error log. ID Check Pattern* Prints an Image Drum Check Pattern. (must be enabled in service mode) Prints Engine Status details.
Page 14: Print Secure Job
Print Secure Job Print Secure Job Item Description Enter Password Enter a password to use secure printing. Use a secure printing job (Secure Job) or a job Stored to HDD when printing. Not Found When you print a Secure document, it is deleted from the HDD. When you print a document Stored to HDD, it prints and remains stored on the HDD until you manually delete it.
Page 15: System Adjust
System Adjust Item Description (Printer Defaults are indicated in Blue) Sets the period after which power save mode starts. 5 min, 15 min, 30 min, Power Save Time min, 240 min When Online is selected, you must manually clear the warning by pressing the Clearable Warning Online button.
Page 16: Admin Setup
Transparency Color As for Paper Color Setting above. The range is -2 to +2. Default is Setting allows for minor corrections in print anomalies such as "smearing" due to SMR Setting (New) environmental conditions (temperature & humidity) BG Setting (New) allows for minor corrections in print anomalies such as "dirty background"...
Page 17 Calibration Exit Calibration Item Description Exit Calibration Select “enter” to exit the calibration screen Auto Density Mode Item Description Auto Density Mode / Off – Turns On or Off the Auto Density Mode Auto BG Adjust Mode Item Description Auto BG Adjust Mode / Off –...
Page 18: Print Statistics
Calibrate Item Description *6X6 Dot Screen Print Meas. Pg. *Yes / No See “Calibrating the Printer” in Chapter 2 12X6 Dot Screen Print Meas. Pg. *Yes / No See “Calibrating the Printer” in Chapter 2 12X6 Line Screen Print Meas. Pg. *Yes / No See “Calibrating the Printer”...
Page 19 Reset Counter Item Description Reset Counter / Yes – Not used at this time Change Password Item Description Change Password *New Password – Enter new 4 digit password...
Page 20: Service Mode Menus
Service Modes & Adjustments 2.2 Accessing Service Mode Enter Service Mode by holding down the menu up / menu down and help buttons at the same time while powering up the machine. (This may take up to 60 seconds.) The System Maintenance Menu will appear. Initialization Please wait…...
Page 21 Button Function _____________________________________________________________________ Back Returns to the prior higher level menu structure, if available. If help text is displayed, pressing Back restores the current menu item. _____________________________________________________________________________ Cancel Terminates the current test or cancels current Help display. _____________________________________________________________________ Help Provides help information, if available. Pressing Help (?) again restores the current menu item and removes the help text.
Page 22 Using the Motor & Clutch Test Enter Service Mode by holding down the menu up / menu down and help buttons at the same time while powering up the machine. (This may take up to 60 seconds.) From Diagnostic Mode Down arrow to “Motor &...
Page 23 Fan Tests Item Tested Remark FAN ID Runs black image drum Fan for 10 seconds FAN BELT Runs the Transfer Belt Fan for 10 Seconds FAN FUSER Runs the Fuser Fan for 10 Seconds FAN PU-BOARD Runs the PU Board Fan for 10 Seconds FAN POWER Runs the Power Supply Fan for 10 Seconds Inverter Tests...
Page 24 Using the Switch Scan Test Enter Service Mode by holding down the menu up / menu down and help buttons at the same time while powering up the machine. (This may take up to 60 seconds.) The System Maintenance Menu will appear. From Diagnostic Mode, Down arrow to “Switch Scan”...
Page 25 MPT PE_ MPT-Paper- Port Level MPT- H:ON Cover-MPT H - Open MPT Home H - Open HOP_CVO_HOME End Sensor H, L Hopping L:OFF L - Close Position L – Close TRAY1 PE_ 1st-Paper- Port Level 1st-Paper- Port Level Cover-1st H - Open PNE_CVO H, L Near-End...
Page 26 Switch Scan Test (Finisher / Inverter) Location 1 Location 2 Location 3 Location 4 Display Detail Sensor Display Sensor Display Sensor Display Sensor Display on Printer LCD Tested Condition Tested Condition Tested Condition Tested Condition FIN S01_S02_ Upper H:OPEN Front door H:OPEN Front door H:OPEN...
Page 27 2.6 Service Adjustments Removing the calibration for the Copier Screen 1. Press the Down Arrow button until Calibration is highlighted, then press the Enter button 2. Press the Down Arrow button until Remove Calibration is highlighted, then press the Enter button 3.
Page 28 6. Press the Enter button in the next window to print out the ColorCal measurement page Print Meas. Pg. *Yes 7. Press the Enter button again to accept the choice to measure the ColorCal page that was just printed 8. Once the following screen appears: Calibration Place meas.
Page 29 9. Once the Q-13 and ColorCal page are on the copier glass, press the Enter button 10. In the next window choose whether or not to print a comparison page and press enter 11. When asked to apply the calibration, press the Enter button Apply Calibration *Yes 12.
Page 30 Using Command WorkStation to Calibrate the Scanner Tools Needed Q-13 Gray Scale, Part Number 70051001. Reasons that a calibration should be done On initial setup, there is no copier calibration stored in the MFP unit so calibration is required. Colors are off when making a copy, but are fine when printing. Color is critical when making copies.
Page 31 Diagram: Standard Calibrator Utility Diagram: Expert Calibrator Utility The Scanner unit can be calibrated via both the Standard and Expert Calibrator processes (shown above). This article will use the Standard Calibrator to demonstrate the process for the remainder of the document.
Page 32 In Check Print Settings (item 2 of the following window), select Copier Screen as shown below. In Generate Measurement Page (item 3 of the above window), press the Print button. The following ColorCal Measurement Page will be printed.
Page 33 In Get Measurements (item 4 of the following window), press the Measure button. The following screen will appear. Select “Yes” in the above window. The following screen will appear.
Page 34 Press the Print button in the above screen. The following page will be printed.
Page 35 The following screen will appear. Place the Kodak Gray Scale and Kodak Color Control Patches on to the Scanner Calibration Page as shown below. Now place the Kodak Gray Scale, Kodak Color Control patches and Scanner Calibration Page face down on the scanner glass and press the Continue button in the previously mentioned Scanner Calibration Setup window.
Page 36 Press the Continue button in the previous Information window. The following screen will appear. Place the Kodak Gray Scale strip face down on the scanner glass and place the ColorCal Measurement Page face down on top of the strip (as shown below).
Page 37 Press the Continue button in the Place Patch Page window (shown in instruction 11). The following screens will appear sequentially. Press the OK button in the above Measurement window. The following screen will appear.
Page 38 Press the Apply button in the above window. The following will appear. Press the OK button in the above Information window. The following will appear.
Page 39 Press the Done button in the above window. The Scanner and the Printer have now been successfully calibrated.
Page 40 Calibrating the Auto Media Detection Sensor The auto media adjustment procedure is a two step process. There is a rough and fine adjustment that needs to be made. Both of these steps should be performed when doing the calibration. Tools Needed Pre-Measured Transparency Pack P/N 42527801 Reasons that a calibration should be done When replacing the Paper Thickness Sensor, Registration Roller and PU PCB.
Page 41 Sensor Cover Opening for Adjustment Media Thickness Sensor Fine Adjustment Re-enter Service Mode using the above procedure. Press the Menu Down button to "Diagnostic Mode" and select “Enter”. Press the Menu Up button to "MEDIA WEIGHT ADJ PA" and select “Enter”.
Page 42 Last press the On Line button to change from the Tens column to the Hundreds (ex. T=110) column and once again use the Menu Up & Menu Down buttons to change the value. Once the T value for P=1 is set correctly press the Enter button to exit the value adjustment. Press the Menu Up button to change between P values, and repeat the steps above to enter the correct measurement values for P=2, P=3, &...
Page 43 Chapter 3 Troubleshooting Print Quality 3.1 Print-Quality Problems Overview Print-quality defects can be attributed to printer components, consumables, media, internal software, external software applications, and environmental conditions. To successfully troubleshoot print-quality problems, eliminate as many variables as possible. The first step is to generate prints using printable pages embedded in the printer on paper from the Supported Media List.
Page 44: Defects Associated With Specific Printer Components
Defects Associated with Specific Printer Components Some print-quality problems can be associated with specific assemblies, the most common problems and the associated assemblies are listed below. Also, refer to the printer’s Troubleshooting Print-Quality Problems pages or a specific print- quality troubleshooting procedure for more information. Imaging Unit •...
Page 45 3.2 Generating and Analyzing Control Panel Test Prints Control panel test prints must first be enabled in service mode. Enter Service Mode by holding down the menu up / menu down and help buttons at the same time while powering up the printer unit. (This may take up to 60 seconds.) Select “Maintenance Print Menu”...
Page 46 Things to observe when analyzing the ID Check Pattern test page include: • Streaks in Process Direction (in the direction of feed, parallel with paper travel) • Banding in Scan Direction (across the page, perpendicular to paper travel) • Uneven Density •...
Page 47 Generating and Analyzing Service Test Prints Generating and Analyzing 100% Solid Fill Test Pages These prints consist of 100% solid fill in CMYK. Each color can be selected individually or in combinations. Enter Service Mode by holding down the menu up / menu down and help buttons at the same time while powering up the printer unit.
Page 48 Page down to “Color”- Select “On” Color Select “On Line” Key. Screen will appear where you can select each color to print. Use the “ON Line” Key to turn off all colors you do not wish to print. Example: for a “Magenta” print, turn off “Yellow”, “Cyan”, and “Black”.
Page 49 Page down to “Print Execute” – Select “Enter” to print selected test page Test Print Print Execute Things to observe when analyzing the 100% fill test page include: Wrinkling Creases Roller marks Scratches Repeating defects or banding Missing Color(s) Streaks Voids 1.
Page 50 Generating and Analyzing Print Engine Test Prints Analyzing the PS Test Pattern Color Registration (Horizontal): The colored lines should match up. Color Registration (Vertical): The colored lines should match up. Uniform RGB / CMYK: color squares should be uniformly colored with no mottling.
Page 51 Print-Quality Troubleshooting Practices Initial Actions to perform prior to using any of these troubleshooting procedures. Ask specific questions of the operator to determine actual problem Generate Configuration Pages to ascertain if all updates are installed, consumable life and to use for reference after changes are performed Generate ID Check Pattern test print, PS Test Page, and Demo Page Follow Standard Preventative Maintenance procedures and clean the printer Verify the media used is supported by the printer.
Page 52 Light Prints in All Colors The overall image density is too light in all colors. If the image is light in only one color, see "Light Print in Only One Color". Initial Actions to Perform Perform Initial Actions from Print Quality Troubleshooting Practices Verify the media used is supported by this printer.
Page 53 Light Print in Only One Color Only one color; yellow, magenta, cyan, or black, is too light on the printed image. Initial Actions to Perform Perform Initial Actions from Print Quality Troubleshooting Practices Verify that color calibration has been performed prior to using this troubleshooting procedure. Check that the Toner Cartridge pull strip is completely removed from the affected color.
Page 54 Blank Prints Initial Actions Perform Initial Actions from Print Quality Troubleshooting Practices Run a test print to help isolate the problem between the Fiery Control Board and the Engine Control Board. Areas of the Printer that Apply to Blank Prints Imaging Unit LED Head Engine Control Board...
Page 55 Mottled or Splotchy Prints The print image has a mottled appearance. Note: This defect is known to occur when manually duplexing, at low humidity, and when printing on heavy weight media. Initial Actions Perform Initial Actions from Print Quality Troubleshooting Practices Areas of the Printer that Apply to Mottled or Splotchy Prints Imaging Unit LED Head...
Page 56: Imaging Unit
Unexpected Colors The colors produced by the printer are dramatically different from the color expected. Initial Actions Perform Initial Actions from Print Quality Troubleshooting Practices Areas of the Printer that Apply to Unexpected Colors Imaging Unit HVPS Engine Control Board Troubleshooting Steps Resolution 1.
Page 57 Repeating Bands, Lines, Marks, or Spots This is usually caused by a damaged roller. In some instances, the spots may be dark instead of white and are repeated. Initial Actions Perform Initial Actions from Print Quality Troubleshooting Practices Print the Color Test pages to identify the color causing the defect.
Page 58 Random Bands, Lines, Marks, or Missing Spots There are areas of the image extremely light or are missing entirely and do not appear to be a repeating defect or in a single color. Caution Leaving an Imaging Unit exposed to light for periods in excess of 10 minutes can quickly degrade its performance and result in early failure.
Page 59: Random Spots
Random Spots There are spots of toner randomly scattered across the page. Toner melting off the Fuser thermistors can also place random spots onto prints. Initial Actions Perform Initial Actions from Print Quality Troubleshooting Practices Verify the Imaging Unit, Fuser, and Transfer Unit are not at or near end of life. Waste toner, especially from the Transfer Unit, can cause random spots to appear on the page.
Page 60 Background There is a very light covering of toner across the entire page. Background contamination can appear in one of the primary colors or gray. The printer displays no error code. Note Depending on the type of paper and environmental conditions, some light amount of random background spotting is normal.
Page 61 Ghosting or Hot Offset There are faint, ghostly images appearing on the page. The images may be either from a previous page or from the current page. This type of artifact can be related to the percent coverage called out in the file being printed. If the colors are offset by less than 10 mm, this represents mis-registration, not ghosting.
Page 62 Incomplete Fusing or Cold Offset The Fuser temperature is set too low for the media loaded in the tray causing improper fusing resulting in the toner rubbing off easily. Initial Actions: Perform Initial Actions from Print Quality Troubleshooting Practices Verify the correct media type is set at the printer’s Control Panel. Areas of the Printer that Apply to Incomplete Fusing or Cold Offset Fuser Media Thickness Sensor...
Page 63 Mis-Registration, Color Layers Not Correctly Registered The image appears blurred and the primary colors are not aligning correctly into one image. For a page oriented Long-Edge Feed, the following applies: If the colors are shifted from left to right, this is mis-registration in the process direction.
Page 64 12. Are the LED Head ribbon cables undamaged, properly routed and seated? Yes – Go to Step 13. No - Reseat, correctly route or replace the wiring harness. 13. Swap the LED Head of the problem color with any other LED Head. Print a Yes –...
Page 65 Toner on Back of Print There is toner on the back of the printed sheet of paper. Initial Actions: Perform Initial Actions from Print Quality Troubleshooting Practices Areas of the Printer that Apply to Toner on Back of Print Imaging Unit Transfer Unit Troubleshooting Steps Resolution...
Page 66 Image Not Centered or Positioned Correctly The image is not centered on the page correctly Initial Actions: Perform Initial Actions from Print Quality Troubleshooting Practices Areas of the Printer that Apply to Image Not Centered or Positioned Correctly Imaging Unit Transfer Unit Troubleshooting Steps Resolution...
Page 67 Process Direction Bands, Voids, or Streaks There are areas of the image that are extremely light or missing entirely. These missing areas form wide bands that run along the page parallel to the leading edge of the paper Initial Actions: Perform Initial Actions from Print Quality Troubleshooting Practices Areas of the Printer that Apply to Process Direction Bands, Voids, or Streaks...
Page 68 Scan Direction Bands, Voids, or Streaks There are areas of the image that are extremely light or are missing entirely. The missing areas form bands that run along the page from the leading edge to the trailing edge in the direction of paper travel.
Page 69 Scan Direction Dark Streaks There are dark lines running parallel with the leading edge of the print. Initial Actions: Perform Initial Actions from Print Quality Troubleshooting Practices Areas of the Printer that Apply to Scan Direction Dark Streaks Imaging Unit Transfer Unit belt Troubleshooting Steps Resolution...
Page 70 Process Direction Lines or Streaks There are dark lines running along the page in the direction of paper travel from the leading edge to the trailing edge. This is generally due to Fuser, paper path roller and/or exit guides contaminated with toner debris. Initial Actions: Perform Initial Actions from Print Quality Troubleshooting Practices...
Page 71 Chapter 4 Troubleshooting Paper Jams 4.1 Paper Jam Error Code Table - When a jam occurs, to display the error code, press the HELP button. *Note Error Code Contents of the operator panel display Area where the jam has occurred 370 ：...
Page 72 Errors in the 6xx range are User Clearable Errors. These errors indicate locations where paper remains in the printer after a jam. These errors do not reference the actual jam, which is referenced by 3xx errors. 631: Tray 1 Side Cover 632: Tray 2 Side Cover 633: Tray 3 Side Cover 634: Tray 4 Side Cover...
Page 74 Jam Troubleshooting 370: Paper Jam Condition Paper jam 370 occurs when the paper is inverted for double-sided printing. 1. The DUP-IN1 sensor does not change to OFF-state within the predefined time after it changed to ON-state. 2. The DUP-IN2 sensor does not change to ON-state within the predefined time after the DUPIN1 sensor changed to ON-state. 3.
Page 75: Check Points
371: Paper Jam Condition Paper jam 371 occurs when paper jams in the middle area of the duplex unit. 1. The DUP-R sensor does not return to OFF-state within the predefined time after it changed to ON-state. 2. The DUP-F sensor does not change to ON-state within the predefined time after the DUP-R sensor changed to ON-state. 3.
Page 76 372：Paper Jam Condition Error 372 occurs when paper jams in the front area of the duplex unit. 1. The IN2 sensor does not change to ON-state within the predefined time after paper has exited from the duplex unit. The printer stops printing immediately when the jam occurs. Cause 1.
Page 77 373: Paper Jam Condition Paper jam 373 occurs when the paper is inverted for double-sided printing. 1. The DUP-IN2 sensor does not change to OFF-state within the predefined time after the DUP-R sensor changed to ON-state. The printer stops printing immediately when the jam occurs. Cause 1.
Page 78 380: Paper Jam Condition Paper jam that occurred while the paper was being transported by the registration roller after it was hopped normally. 1. The IN2 sensor does not change to ON-state within the predefined time after the registration roller started to rotate. 2.
Page 79 381： Paper Jam Condition Paper jam has occurred while the paper was being transported by the registration roller, the belt unit or the fuser. 1. The EXIT sensor does not change to ON-state within the predefined time after the WR sensor changed to ON-state. 2.
Page 80 382: Paper Jam Condition Jam near the fuser unit 1. The EXIT sensor does not return to OFF-state within the predefined time after it changed to ON-state. The printer stops printing immediately when the jam occurs. Cause 1. Fuser unit is not transporting paper. 2.
Page 81 383 ： Paper Jam Condition Paper jam in the fuser or near the entrance to the duplex unit 1. The DUP-IN1 sensor does not change to ON-state within the predefined time after the Exit sensor changed to ON-state. The printer stops printing immediately when the jam occurs. Cause 1.
Page 82 384: Paper Jam Condition Jam near the exit area 1. When the printer is turned on, or the cover is opened and closed, Job-Off sensor has changed to ON-state. The printer stops printing immediately when the jam occurs. Cause 1. Transport rollers cannot transport paper because they have become dirty with paper Dust, toner, etc. 2.
Page 83 390： Paper Jam Condition This is a Multi Purpose Tray mis-feed. 1. Even after the printer tries hopping operation three times, MPT HP sensor does not change to ON-state. 2. Even after the printer tries hopping operation three times, IN2 sensor does not change to ON-state, then, OFF-state. The printer stops printing immediately when the jam occurs.
Page 84 Close the cover - Slide the paper guide to the center - Return cover to the original position. While lifting MP tray, insert the white lever in the arm that supports MP tray, and lock it by lowering the white lever. (Both sides) Move the paper guide outward, close the paper supporter, and close the MP tray.
Page 85: Paper Jam
391, 392, 393, 394, Paper Jam Condition Paper has misfed from Tray 1, 2, 3, 4. 1. Even after the printer tries hopping operation three times, Tray 1 to 4HP sensors do not change to ON-state. 2. The IN1 sensor does not return to OFF-state within the predefined time after the tray1 to 4 HP sensor changed to OFF-state. (Error391:Tray1) (Error392:Tray2) (Error393:Tray3)
Page 86 400: Paper Size Error / 401: Multiple sheet feed error Condition Error indicating that the detected size is not the specified size. The printer ejects the paper, then, displays the error. * Error 401 may occur along with Error 400 when the paper is fed from the tray. Cause There are several possible causes for this problem.
Page 87 Chapter 5 Troubleshooting Self Diagnostic Codes Self Diagnostic Error Codes (Printer) Code Cause/Description Remedy 001 to 007 CPU Exception Power Off/On. 001 = ASP PCB Key Chip Error Replace Fiery PCB 002 = Unauthorized HDD Copy (must move EEPROM to new board) 003 = Unauthorized Software Configuration 004 = EEPROM Missing CU Font ROM Hash Error...
Page 88 Self Diagnostic Error Codes (Printer) Code Cause/Description Remedy Image Processor Driver Error Replace Fiery PCB (must replace EEPROM) Parallel Interface Driver Error Replace Fiery PCB (must replace EEPROM) USB Drive Error Replace Fiery PCB (must replace EEPROM) Check Connections Network Communication Error Replace Network PCB if applicable Replace Fiery PCB (must replace EEPROM)
Page 89 Self Diagnostic Error Codes (Printer) Code Cause/Description Remedy 111 to 117 An Optional Unit for Another Model is Detected Install Option / Check Connections Replace Engine Control Board 111 = Duplex 112 = 2 Tray 113 = 3 Tray 114 = 4 Tray 115 = 5 Tray...
Page 90 Self Diagnostic Error Codes (Printer) Code Cause/Description Remedy 167 to 169 167 = Thermistor Slope error “Fuser Failure” 168 = Compensation Thermistor Error 169 = Upper Side Thermistor Error 170 to 176 Fuser thermistor Short Circuit / Open Circuit “Fuser Failure” High Temperature / Low Temperature Wrong Fuser Installed Install Correct Fuser / Replace The Fuser...
Page 91 Self Diagnostic Error Codes (Printer) Code Cause/Description Remedy The Printer Engine Top Cover is Open “Top Cover Open Error” Fuser Unit is Detected as Missing “Fuser Unit Detected as Missing” Motor Overheated “ Motor Overheating Error” 323 to 326 Open Cover Paper Thickness Error Check / Clean Sensor Belt Missing Error “...
Page 92: Operation Error
Self Diagnostic Error Codes (Printer) Code Cause/Description Remedy Paper Output Stacker Full Error Check Sensor / Connections Check / Replace stacker Full Sensor MP Tray Out of Paper Error Check Sensor / Connections Check / Replace Sensor 491 to 495 Tray Out of Paper Error Check Sensor / Connections 491 = Tray 1...
Page 93 Self Diagnostic Error Codes (Printer) Code Cause/Description Remedy Sub CPU Clock Frequency Error Check Connections of the Engine PCB (S2M) Replace the Engine PCB 931 to 935 Clock Frequency Error Check Sensor / Connections 931 = Duplex Replace for: 932 = Inverter 931 = V72-2 Board (Duplex Control Board) 933 = Tray 2 932 = V72-3 (Inverter Control Board)
Page 94 Self Diagnostic Error Codes (Finisher) Code Cause/Description Remedy See Finisher Service Manual Finisher Stapler Error Finisher Tray Elevator Error See Finisher Service Manual Finisher Bin 2 Exit Belt Motor Error See Finisher Service Manual Finisher Jogging Motor Error See Finisher Service Manual Finisher Main Feed Motor Error See Finisher Service Manual Check All Connections...
Page 95 Self Diagnostic Error Codes (Other Codes) Code Cause/Description Remedy 0101 to 0104 The data stored in HDD may be corrupted Re-image Hard Drive with the latest version. . Check all cable connections between Scanner & Printer Step 1 Replace cables between Scanner & Printer Step.2 The Communication between a scanner Re-image Hard Drive...
Page 96 5.2 General Troubleshooting No Control Panel Display Troubleshooting Procedure Initial Actions: Remove and reseat the Fiery Control Board. Print an engine test print. Replace the Fiery Control Board. See “DC Power Supply Troubleshooting”. Control Panel LED is on, No Control Panel Display Troubleshooting Procedure Initial Actions: Remove and reseat the Fiery Control Board.
Page 97 Troubleshooting DC Power Supply Troubleshooting Procedure Initial Actions: Perform the AC power supply troubleshooting procedure. Replace the Low Voltage Power Supply (LVPS). Troubleshooting RAM Memory Failures Troubleshooting Procedure Initial Actions: Check that the RAM devices are making positive contact with their connectors. Power off the printer.
Page 98: Fuser Failure
Troubleshooting Error Codes Fuser Failure The Fuser temperature regulation has failed. Error Codes that Apply 167 to 169 170 to 176 Initial Troubleshooting Actions to Take Reseat the Fuser. Cycle the printer's power. Test wall Voltage Parts of the Printer that Apply Fuser LVPS Engine Control Board...
Page 99 Environmental Sensor Failure The Environmental Sensor has failed. Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Environmental Sensor Environmental Sensor Wiring Engine Control Board Troubleshooting Procedure Steps...
Page 100 Imaging Unit Motor Overheating Failure Error Codes that Apply Initial Troubleshooting Actions to Take Ensure that the temperature and installation clearances of the printer are at specifications. Clean all fan ducts. Turn the printer off and allow a minimum of 30 minutes for cooling. Restart the printer.
Page 101 Engine Control Board Failure Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the Printers Power If the problem persists follow the procedure below. Parts of the Printer that Apply Engine Control Board EEPROM Engine Control Board Troubleshooting Procedure Steps Action Taken Cycle power to the printer.
Page 102 LVPS Power Supply Failure Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the Printers Power If the problem persists follow the procedure below. Parts of the Printer that Apply LVPS Troubleshooting Procedure Steps Action Taken Visually inspect the LVPS for damage Clean the LVPS if dirty.
Page 103 Fiery Controller Fan Failure Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the Printers Power If the problem persists follow the procedure below. Parts of the Printer that Apply Fiery Control Board Fan Troubleshooting Procedure Steps Action Taken Test the cooling fan for proper Replace the Engine Go to Step 2.
Page 104 Power Supply Fan Failure Error Codes that Apply Initial Troubleshooting Actions to Take Clear any obstructions from the LVPS Fan vent. Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply LVPS Fan LVPS Engine Control Board Troubleshooting Procedure...
Page 105 Fan Failure Error Codes that Apply Fuser Fan Fuser Fan Power Fan PU Motor Fan Belt Fan Image Drum Fan Top Cover Fan Duplex Fan Initial Troubleshooting Actions to Take Ensure that the temperature and installation clearances of the printer are at specifications. Clean all fan ducts.
Page 106 Duplex Interface Failure Error Codes that Apply 181, 919 Initial Troubleshooting Actions to Take Reseat the Duplex Unit Cycle the Printers Power If the problem persists follow the procedure below. Parts of the Printer that Apply Duplex Unit Motor Driver Board Troubleshooting Procedure Steps Action Taken...
Page 107 Tray 1, 2, 3, 4 Communication Errors Error Codes that Apply Tray 1 Motor Error Tray 2 Motor Error Tray 3 Motor Error Tray 4 Motor Error Tray 2 Abnormal Voltage Detection Tray 3 Abnormal Voltage Detection Tray 4 Abnormal Voltage Detection Initial Troubleshooting Actions to Take Cycle the Printers Power If the problem persists follow the procedure below.
Page 108 Inverter Unit Interface Failure Error Codes that Apply Initial Troubleshooting Actions to Take Reseat the Finisher connections. Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Inverter Control Board Finisher Power Cord Engine Control Board Troubleshooting Procedure Steps...
Page 109 Cyan, Magenta, Yellow, Black LED Failure Error Codes that Apply Yellow, Magenta, Cyan, Black Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply LED Head LEDPWR harness LED Relay Board YK LED DATA harness CM LED DATA harness...
Page 110 Fuser Fan Failure Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Fuser Fan Fuser Fan harness Engine Control Board Troubleshooting Procedure Steps Action Taken Test the cooling fan for proper...
Page 111 Fuser 110V/220V Mismatch Error Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Fuser Engine Control Board Troubleshooting Procedure Steps Action Taken Ensure the proper Fuser (110v vs.
Page 112 Unsupported Duplex Unit Rom Error Codes that Apply Initial Troubleshooting Actions to Take Reseat the Duplex Unit Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Duplex Unit Engine Control Board Troubleshooting Procedure Steps Action Taken...
Page 113 Fuse Cut Error (Fuser) Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Fuser Engine Control Board Troubleshooting Procedure Steps Action Taken Test the Fuser fuse.
Page 114 Fuse Cut Error (Transfer Belt Unit) Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Transfer Unit HVPS Cover HVPS Engine Control Board Troubleshooting Procedure Steps Action Taken...
Page 115 Fuse Cut Error C, M, Y, K Imaging Drum Unit Error Codes that Apply Yellow Magenta Cyan Black Initial Troubleshooting Actions to Take Reseat the indicated Imaging Unit Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply C, M, Y, K Imaging Unit Imaging Unit Sensor Board...
Page 116 Fiery Controller to Engine Board Communication Failure Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Fiery Control PCB Engine Control Board Troubleshooting Procedure Steps Action Taken...
Page 117 Finisher Interface Error Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Finisher Control Board Finisher Interface Cable Finisher Power cord Engine Control Board Troubleshooting Procedure Steps Action Taken...
Page 118 Inverter Power Supply Failure Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Inverter Power Supply Inverter Interface Cable Inverter Power cord Engine Control Board Troubleshooting Procedure Steps...
Page 119 Control Panel Communication Failure Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Control Panel Control Panel Interface Cable Engine Control Board Troubleshooting Procedure Steps Action Taken...
Page 120 Error in the Transfer Belt Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Transfer Unit Transfer Unit Motor Belt Rotation Sensor Engine Control Board Troubleshooting Procedure Steps...
Page 121 C, M, Y, K Imaging Drum Unit Failure Error Codes that Apply Yellow Image Drum Unit Failure Cyan Image Drum Unit Failure Magenta Image Drum Unit Failure Black Image Drum Unit Failure Initial Troubleshooting Actions to Take Reseat the indicated Image Drum Unit Cycle the printer's power.
Page 122 Test the indicated Imaging Unit Motor 1. Remove the affected Imaging Unit. Replace the motor. If 2. Close the Interlock Switches. Go to Step 6. the error persists, Run the Motor Clutch test for the go to Step 6. affected motor. Does the motor function correctly? Check the Up/Down Mechanism and associated gears.
Page 123 Engine Board Flash Memory Error Error Codes that Apply Flash memory Hardware Duplex Flash Memory Tray 3 Flash Memory Tray 4 Flash Memory Sub CPU Flash Memory Inverter Flash Memory Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Engine Control Board Troubleshooting Procedure...
Page 124 Unsupported ROM Error Codes that Apply Duplex Unit Tray 2 Unit Tray 3 Unit Tray 4 Unit Finisher Unit Inverter Unit Initial Troubleshooting Actions to Take Reseat the Unit in Question Cycle the Printers Power If the problem persists follow the procedure below. Parts of the Printer that Apply Unit indicated by the Code Engine Control Board...
Page 125 Toner Sensor Detection Error Error Codes that Apply Yellow Magenta Cyan Black Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Toner Cartridge Image Drum Unit Toner Motor Imaging Drum Unit Sensor Board Engine Control Board...
Page 126 MT Home Position Detection Error Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply MPT Home Position Sensor Home Position Sensor Harness Registration Motor Engine Control Board Troubleshooting Procedure...
Page 127 Toner Feed Switch Error/Toner Lock Lever Error Error Codes that Apply Yellow Magenta Cyan Black Initial Troubleshooting Actions to Take Ensure that the Toner Cartridges are fully seated and locked into position Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Toner Cartridge Image Drum Unit...
Page 128 Color Up/Down Error Error Codes that Apply Initial Troubleshooting Actions to Take Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Up/Down Motor Front Up/Down Mechanism Rear Up/Down Mechanism Engine Control Board Troubleshooting Procedure Steps Action Taken...
Page 129 Top Cover Open Error Error Codes that Apply Initial Troubleshooting Actions to Take Ensure that the Top Cover Latch is free of obstructions and fully closed. Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Top Cover Interlock Switch HVPS Engine Control Board...
Page 130 Fuser Unit Detected as Missing Error Codes that Apply Initial Troubleshooting Actions to Take Ensure that the Fuser Latch is free of obstructions and fully engaged. Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Fuser Fuser Release Sensor Engine Control Board...
Page 131 ID Unit Life Error Error Codes that Apply Yellow Magenta Cyan 353Black Initial Troubleshooting Actions to Take Print a Configuration Page to verify remaining life. Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply C, M, Y, K Imaging Unit Engine Control Board Troubleshooting Procedure...
Page 132 Fuser Life Error Error Codes that Apply Initial Troubleshooting Actions to Take Replace the Fuser. Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Fuser Unit Engine Control Board Troubleshooting Procedure Steps Action Taken Generate a Configuration Page and...
Page 133 Belt Life Error Error Codes that Apply Initial Troubleshooting Actions to Take Replace the Transfer Unit. Cycle the printer's power. If the problem persists follow the procedure below. Parts of the Printer that Apply Transfer Unit Engine Control Board Troubleshooting Procedure Steps Action Taken Generate a Configuration Page and...
Page 134 Replace the affected Toner Cartridge. Go to Step 3. Complete Does the error persist after a genuine Oki Toner Cartridge is installed? Check all pins of the RFID Harness for Replace the RFID Replace the RFID continuity. Remove the Top Cover.

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Oki ES3640MFP Service & Troubleshooting Manual

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