Oki MC-860 / CX2633MFP Service & Troubleshooting Manual
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Oki MC-860 / CX2633MFP Service & Troubleshooting Manual

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MC-860 / CX2633MFP
Service & Troubleshooting Guide
© 2009 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,
www.okidata.com
© Okidata Americas, Inc. 2009

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Summary of Contents for Oki MC-860 / CX2633MFP

  • Page 1 MC-860 / CX2633MFP Service & Troubleshooting Guide © 2009 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

    Chapter 1 Maintenance Procedures – Printer / ADF / Scanner Exterior Cleaning Cleaning the LED lens array Cleaning the Pickup Roller Cleaning inside the Printer Cleaning the ADF and Scanner Chapter 2 Service Menus and Adjustments How to Enter the Service Menu Service Maintenance Menu Overview System Maintenance Panel Maintenance...

  • Page 3: Exterior Cleaning

    Chapter 1 Maintenance Procedures – Printer Exterior Cleaning Clean inside and outside of the printer with a clean dry cleaning cloth and small vacuum cleaner as required. Be careful not to touch the image drum terminals, the LED lens array and the LED head Note! connectors.

  • Page 4: Cleaning The Led Lens Array

    Cleaning the LED lens array • Pull the document table lock lever to the front to release the lock, and raise the document table. Document Table Lock Lever Document Table • Press the top cover button and open the top cover. Top Cover Top Cover Button Caution...

  • Page 5: Cleaning The Pickup Roller

    Cleaning the Pickup Roller Clean the pickup roller for tray 2 and tray 3 in the same procedure. Note For the MP tray, clean the pickup roller in the same procedure for the feed roller only. (Pad is not used.) •...

  • Page 6: Cleaning Inside The Printer

    Cleaning inside the Printer. Toner can adhere to the metal shaft that is located in between the fuser and the cyan image drum cartridge depending on the print pattern. Perform cleaning of the inside of the MFP if toner has adhered to the metal shaft. •...
  • Page 7 • Hold the handle of the fuser unit and remove it. Fuser Handle Fuser Unit Lock Lever (Blue) • Remove the Transfer Belt unit from the MFP. Transfer Belt Retaining Screws (Blue) Transfer Belt • Thoroughly clean the interior of the printer and re-install the transfer belt, fuser, and drum units.

  • Page 8: Cleaning The Adf And Scanner

    1.5 Cleaning the ADF and Scanner Clean the paper path of the ADF once every month or more in order to maintain high print quality and to transport the documents smoothly. • Open the document cover OPEN lever and open the document cover. Document Cover Document Cover Open Lever •...
  • Page 9 • Open the document table cover. Document Retaining Pad Platen Glass Scanning Glass Clean the surface of the document retaining pad, the platen Glass and the scanning glass with a clean cloth wrung out using clean water or neutral detergent.
  • Page 10 Chapter 2 Service Menus and Adjustments The service function is to be used for the purposes of MFP maintenance by the experienced Maintenance / service engineer, and are not open to general users. The respective items of the service function are contained in the service menu. 2.1 How Enter the Service Menu Enter the service menu by the following operation.
  • Page 11 The Password can be changed by the “Change Password” menu of the “System Caution! Maintenance” menu. It is highly recommended that you change this password. In the event DO NOT that the changed password is lost, the main control board and hard disk drive would need replacement. This is not a covered expense under any machine warranty and you will incur the cost of the replacement components.
  • Page 12 Service Maintenance Menu – Overview System Maintenance Screen Panel Maintenance Screen Copy Maintenance Screen Scan Maintenance Screen Fax Maintenance Screen Printer Maintenance Screen...
  • Page 13 Service Maintenance Menu Structure is shown below. Level 1 Level 2 Level 3 Level 4 Reboot Process OKIUSER When Closed System Format HDD When Executed Maintenance When Executed Format Flash ROM Menu Reset None (See Section 2.3) All Reset When Executed When Closed Test Print Menu Change Password...

  • Page 14: System Maintenance

    2.3 System Maintenance OKIUSER Sets the MFP for the Destination Country. Should always be set for ODA (North America). Settings other than ODA may Note! result in erratic MFP operation. When the screen exits the service menu after this setting is changed, the MFP reboots automatically.
  • Page 15 Menu Reset (Administrator Password Reset) Returns the administrator password to the factory shipment setting (factory default) value. When [Menu reset] is selected, the following confirmation screen is displayed. When [Yes] is selected, the administrator password is reset to the factory shipment setting (factory default) value.

  • Page 16: Panel Maintenance

    Change Password The Password can be changed by the “Change Password” menu of the “System Note! Maintenance” menu. It is highly recommended that you change this password. DO NOT In the event that the changed password is lost, the main control board and hard disk drive would need replacement.
  • Page 17 LCD Test Displays the test pattern on the LCD in order to check if there are inactive pixels on the LCD. Operating procedure The following three kinds of test patterns can be displayed. To select the test patterns, press the [SETUP] key. Press the [SETUP] key.
  • Page 18 Control Panel Key Test Checks if the MFP responds normally when the hardware key and the software key on the control panel is pressed, by observing the LCD screen if the pressed key is displayed or not on the LCD screen. This test aims at checking all of the keys. Therefore, all keys should be pressed in the specified order in order to check that all keys have been pressed.

  • Page 19: Scanner Maintenance

    2.5 Scanner Maintenance Shading Data Loading Shading data of FBS and that of RADF (both-side copy model only) are loaded. This item should be executed whenever any of the following items is performed. • When the scanner lamp is replaced * •...
  • Page 20 Scan Position Adjustment Side registration adjustment - The separate setting items are prepared for FBS, ADF (front side) and ADF (back side) independently. Setting for Flat Bed Scanning (FBS) Perform adjustment so that the scan start position in the horizontal scanning direction during FBS Scanning stays within the reference value.
  • Page 21 Back End Position Adjustment The rear end position adjustment should be executed after the top end Precaution position adjustment is completed. In addition, scanning is stopped before the rear end is reached if amount of the specified scanning lines are scanned in the copy mode and scan mode even though the rear end position adjustment is performed.
  • Page 22 Tighten the screws at the locations as specified in the illustration, and press the [Close] button. When the mirror carriage is locked in the specified position, select the menus [SETUP] – [Shutdown] to execute the shutdown operation. Then turn OFF the power. How to release the mirror carriage mode When the MFP remains in the mirror carriage mode, the following standby screen is displayed.

  • Page 23: Fax Maintenance

    2.6 Fax Maintenance Country Code Select the country in which the MFP is going to be installed. (ODA) North America In this setting, any country code can be selected regardless of the OKIUSER setting. When the screen exits the service menu after this setting is changed, the MFP reboots automatically.
  • Page 24 RX (During Reception) When set to Enable Switching time between CED – DIS *4: 1000 ms When set to Disable Switching time between CED – DIS *4: 75 ms Switching time between CED – DIS *4: When the CED signal at 2100 Hz is sent out during reception of overseas communication, the echo suppression stops so that the line condition becomes inferior with much echo.
  • Page 25 Pulse Make Ratio Default 40% Sets the make ratio of DP (10 pps) during call. MF (Tome) Duration Range 0 - 1 ms to 255 ms ON Period Default 80ms Sets the ON period of MF (Tone) Duration send. When the setting value is “0”, the MFP runs at the initial value of each country.

  • Page 26: Printer Maintenance

    Tonal Send Test Tonal test procedure Press the [Tonal] button on the "Line Test” screen. Select a signal to test. When the [Stop] key is pressed, signal send is interrupted. When the [Close] button is pressed, the screen returns to the “Line test” screen. When the [Reset] key is pressed, screen returns to the top screen of the service menu.
  • Page 27 Engine Diagnostic Mode (Self-Diagnostic) How to enter self-diagnostic mode (Level 1) 1. From the service menu, select [Printer Maintenance] and [Engine Diag. Mode] to enter the self-diagnostic mode. 2. When the screen enters the self-diagnostic mode (Level 1), the "DIAGNOSTIC MODE”...
  • Page 28 Level 1 Diagnostic Screens...
  • Page 29 Item Self-Diagnostic Menu Adjustment Contents Switch Scan Test SWITCH SCAN Input sensor and switch Check (See section 2.7.1) Motor Clutch Test MOTOR&CLTCH TEST Motor and clutch operational test (See section 2.7.2) TEST PRINT Executing Test Print PU internal test pattern print and printer (See section 2.7.3) environmental conditions...

  • Page 31: Switch Scan Test

    2.7.1 Switch Scan Test This self-diagnostic menu is used to check the input sensors and switches of the print engine. 1. Enter the self-diagnostic mode and press the until (Level 1) (2) key (8) key is displayed in the top of the screen. Press the to execute.
  • Page 32 Switch Scan Test 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 Paper R oute: PU Entrance H - Absent Entrance H - Absent Write...

  • Page 33: Motor & Clutch Test

    2.7.2 Motor & Clutch Test This self-diagnostic menu is used to test the motors and clutches of the print engine. 1. Enter the self-diagnostic mode and press the key until (Level 1) (2) key is displayed in the top of the screen. [MOTOR &...
  • Page 34 Unit Name Display Drive Restriction Conditions ID MOTOR Drives when all of the IDs (K/Y/M/C) are removed. BELT MOTOR Drives when all of the IDs (K/Y/M/C) are removed. FUSER MOTOR FUSER MTR REV FUSER_RLS REGIST MOTOR T1 HOPPING MOTOR FRONT MOTOR REGIST SHUTTER EXIT SOLENOID DUPLEX MOTOR...

  • Page 35: Test Print

    2.7.3 Test Print This self-diagnostic menu is used to print the test pattern contained in the PU. Other test patterns are contained in the controller. 1. Enter the self-diagnostic mode and press the until (Level 1) (2) key (8) key [TEST PRINT] is displayed in the top of the screen.
  • Page 36 Print Patterns Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6 If the solid print data (Pattern 7) that is contained in Note! the local print function is used for test print with 100% setting of each color, it causes offset. To prevent offset, select the print setting of each color so that the number of colors to be printed at the same time should be limited to 2 colors or less.
  • Page 37 Monitoring Printer Environmental Conditions The following printer environmental conditions can be monitored during generation of test prints. The following messages are displayed during test print. Number of test prints (unit: sheet) P *** = Print wait time (unit: sheet) W*** = Pressing the switches the display.
  • Page 38 UTMP: Fuser motor standard speed correction parameter (Fuser target temperature) [unit: DEC] REG: Hopping motor standard speed timer value (I/O setting value) [unit: HEX] EXT: Fuser motor standard speed timer value (I/O setting value) [unit: HEX] Pressing the switches the display. When the key is pressed, the screen exits (2) key the test.

  • Page 39: Color Registration Error Correction Test

    2.7.4 Color Registration Error Correction Test This self-diagnostic menu is used for adjustment and to investigate cause of the color registration error of the MFP. 1. Enter the self-diagnostic mode (Level 1) and press the until (2) key (8) key is displayed in the top of the screen.

  • Page 40: Density Error Correction Test

    << When is executed >> BLT REFLECT RSLT The key operations when is executed The key operations are the BLT REFLECT RSLT same as those above. When the is pressed, the screen exits the test. (Screen returns to the item 1 condition.) (4) key Color registration correction test items Display...
  • Page 41 << When is executed >> DENS ADJ EXECUTE • The Density error correction test is executed. (The lamp blinks.) [ON LINE] • When the test is complete, the test result (OK or error name) is displayed in the upper column of the display window and is displayed in the lower **** RESULT column of the display window.

  • Page 42: Consumable Item Counter Display

    2.7.6 Consumable Item Counter Display This self-diagnostic menu is used to display the consumption status of the consumable items. 1. Enter the self-diagnostic mode and press the until (2) key (8) key is displayed on the screen. [CONSUMABLE STATUS] Press the to execute.

  • Page 43: Factory/Shipping Mode Switching

    Printed Sheets Counter Display This self-diagnostic menu is used to display the number of printed sheets status of the MFP. 1. Enter the self-diagnostic mode and press the until (2) key (8) key is displayed on the screen. [PRINTER STATUS] Press the to execute.
  • Page 44 Upper Display Lower Display Function Sets up the Factory work mode. FACTORY MODE FACTORY MODE This is a production mode. Note! The unit should always be set for Shipping mode or erratic operation may result. Sets up the Shipping mode for SHIPPING MODE normal operation.

  • Page 45: Display Setting

    Display Setting Operation Function TONER SENSOR ENABLE To detect Sets Enable/Disable of the toner sensor DISABLE Not to detect operation BELT UNIT ENABLE To check Sets Enable/Disable of CHECK__ENABLE the belt installation DISABLE Not to check check job. ID UNIT CHECK ENABLE To check Sets Enable/Disable of...

  • Page 46: Initialization Functions

    2.8 Initialization Functions Items that can be initialized by the Administrator The following table shows the setup items that can be initialized by administrator. The gray colored items indicate that the data is stored in the CU side. The white items indicate that the data is stored in the scanner unit side. The items with the characters indicate that the registered “CL”...
  • Page 47 Initialization Functions Admin Page 2...
  • Page 48 Initialization Functions Admin Page 3 *1 The group counter – Reset is confidential and menu is not open in FCS. *4 When HDD Disable is set, only administrator can log on. (Because the access control mode setup values is stored in Flash, but the user information is not stored in HDD.)
  • Page 49 Items that can be initialized by the Service Engineer The initialization operations that can be performed by service engineer are shown below. The following table shows the setup items that can be initialized by the service engineer. Descriptions regarding description in the table are added. The gray colored items indicate that the data is stored in the CU side.
  • Page 50 Initialization Functions Service Engineer Page 2...
  • Page 51 Initialization Functions Service Engineer Page 3...
  • Page 52 Initialization Functions Service Engineer Page 4 *2 Only the setups that change their initial values depending on destination or counter code are initialized. *3. [Filename (standard)] and [E-mail edit fixed phrase] under the menus [Scanner function] - [E-mail setting] are initialized. *4 When HDD Disable is set, only administrator can log on.

  • Page 53: Print Quality Problems Overview

    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 54: Using New Consumable Units For Testing Purposes

    3.2 Using New Consumable Units for Testing Purposes The MC-860 / CX2633 will allow you to utilize new consumable units for print quality diagnosis and troubleshooting purposes. When using new units (Drum, Transfer Belt, Fuser) to assist in troubleshooting, Note! you should temporarily set the printer to “Factory Mode”...

  • Page 55: Print-Quality Troubleshooting

    3.4 Print-Quality Troubleshooting 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 Maintenance Procedures in Chapter ■...
  • Page 56 Light Prints 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 Maintenance Procedures in Chapter ■ Print the ID Check Pattern (Reports –...
  • Page 57 Blank Prints Initial Actions to Perform ■ Perform Initial Actions from Maintenance Procedures in Chapter ■ Perform isolation Test Prints (Section 2.7.3) to isolate the problem between the CU Board and the PU Board. Areas of the Printer that Apply ■...
  • Page 58 Mottled or Splotchy Prints The print image has a mottled appearance. This defect is known to occur at low humidity, and when printing on heavy weight Note! media. Initial Actions to Perform ■ Perform Initial Actions from Maintenance Procedures in Chapter ■...
  • Page 59 Unexpected Colors The colors produced by the printer are dramatically different from the color expected. Initial Actions to Perform ■ Perform Initial Actions from Maintenance Procedures in Chapter ■ Verify the media used is supported by this printer. ■ Verify the media settings are correct at the Control Panel.
  • Page 60 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 to Perform ■ Perform Initial Actions from Maintenance Procedures in Chapter ■...
  • Page 61 Mis-Registration, Color Layers Not Correctly Registered The image appears blurred and the primary colors are not aligning correctly onto the final image. Initial Actions to Perform ■ Perform Initial Actions from Maintenance Procedures in Chapter ■ Verify the media used is supported by this printer.
  • Page 62 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 63 4.1 Troubleshooting Paper Feed 4.1.1 Paper Feed Sensor Details Diagram showing paper detection sensors in the print engine...
  • Page 64 Paper Jam Code Table for the print engine Code Number Jam Location Related Sensors Duplex reversal DUP-IN, DUP-R Duplex input DUP-F, DUP-R Feed error at Duplex Multi-feed in Duplex Unit DUP-B Feed IN2, WR Transport IN1, IN2, WR, Fuser-IN, EXIT Exit EXIT, Fuser-IN Duplex entry...

  • Page 65: Jam Removal Procedure

    Sensor Location Table for the RADF Sensor Description PI 10 Cover open/close sensor PI 11 Document set sensor PI 16 Delivery reversal sensor PI 17 Read sensor PI 18 Registration paper sensor 4.1.2 Jam Removal Procedure Front Cover Block (Code: 372, 380, 390, 391, 400) Open the front cover.
  • Page 66 Fuser Unit (Code: 381, 382, 383, 385) The fuser unit gets very hot. Be very careful not to touch the fuser unit with Caution! your hands. (1) Raise the scanner and open the top cover. (2) Raise the fuser unit lock lever (lever shown in blue) in the direction shown by the arrow.
  • Page 67 (1) Remove the four image drum cartridges and place them on a flat workbench. (2) Cover the removed image drum cartridge with a black paper. (3) Draw out the jammed paper gently with care. (4) Return the image drum cartridges back to the original positions.
  • Page 68 Duplex Unit (Code: 370, 371, 373) Before removing the duplex unit, be sure to turn OFF the power of the MFP. Note! (1) Remove the Duplex Unit. (2) Press the jam release lever of the duplex unit to open the duplex unit cover. (3) Draw out the jammed paper gently with care.
  • Page 69 Second Tray Unit (Option) (Code: 391, 393) This manual describes the jam clear method using tray 2 as an example. Tray 3 can also be cleared using the same method. (1) Remove the paper tray from the second tray unit, and remove the paper. (2) After the jammed paper is removed, open the MP tray, push up the center lever.
  • Page 70 (2) Draw out the jammed paper gently with care. If the jammed paper cannot be removed, go to step (4). Do not pull the document out with excessive force. Note! (3) When the jammed paper is removed, go to step (9). (4) Open the inside cover.
  • Page 71 (6) When the jammed paper is removed, close the inside cover and go to step 9. (7) Rotate the dial so that the jammed document is unloaded. (8) Raise the document tray. Remove the jammed document gently. (9) Close the document cover.
  • Page 72 Chapter 5 Troubleshooting Error Codes Troubleshooting Self Diagnostic Codes Self Diagnostic Error Codes Code Cause/Description Remedy 002 - 005 CPU Exception Power Off/On. If RAM DIMM is installed, remove and Power OFF/ON. Re-mount RAM DIMM / Replace RAM DIMM Replace the CU Board CU ROM Hash Check Error Power OFF/ON.
  • Page 73 Self Diagnostic Error Codes Code Cause/Description Remedy Engine I/F Error. I/F error between PU-CU. Is CU Replace the CU Board Assembly installed correctly? Replace the PU Board Video Error. Error is detected when expanding of the Decrease resolution, and execute printing again. video data.
  • Page 74 Self Diagnostic Error Codes Code Cause/Description Remedy LED head detection is abnormal. Install the LED head unit properly. 131 - 134 (131 =Y, 132 = M, 133 = C, 134= K) Is the LED Check the LED HEAD FUSE. head installed normally? Is the LED HEAD FUSE blown? Turn OFF the power once and back ON.
  • Page 75 Self Diagnostic Error Codes Code Cause/Description Remedy RFID Reader is not installed. RFID read device error Check connections of the RFID R/W PCB. Replace the RFID R/W PCB Replace the P6X PCB. Belt temperature is abnormal. 901 - 904 Re-connect the cable properly. 901: Short circuit.

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