Kyocera FS-1028MFP Service Manual
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Kyocera FS-1028MFP Service Manual

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FS-1028MFP
SERVICE
MANUAL
Published in August 2009
842H9112
2H9SM062
Rev.2

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Summary of Contents for Kyocera FS-1028MFP

  • Page 1: Service Manual

    FS-1028MFP SERVICE MANUAL Published in August 2009 842H9112 2H9SM062 Rev.2...
  • Page 2 CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS. It may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details in your area for proper disposal. ATTENTION IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE TYPE INCORRECT.

  • Page 3: Revision History

    Revision history Revision Date Replaced pages Remarks June 24, 2009 1-1-1, 1-1-3, 1-1-4, 1-2-2, 1-3-1 to 1-3-64, 1-4-3, 1-4-5, 1-4-6, 1-4-7, 1-4-9, 1-5-3, 1-5-12, 1-5-21, 1-5-29, 1-5-30, 1-5-22, 1-5-23, 1-5-24, 1-5-25, 1-5-26, 1-5-27, 1-5-29, 1-5-30, 1-5-49, 2-1-8, 2-2-2, 2-2-4, 2-3-2, 2-4-2, 2-4-4 August 11, 2009 1-3-3 to 1-3-7, 1-3-13, 1-3-14, 1-3-28 to 1-3-31, 1-3-33, 1-3-39, 1-3-48, 1-5-2, 1-5-29, 1-5-30...
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  • Page 5: Safety Precautions

    Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
  • Page 6 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.

  • Page 7: Installation Precautions

    1.Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current....................•...

  • Page 8: Specifications 1

    2.Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
  • Page 9 • Do not remove the ozone filter, if any, from the copier except for routine replacement..... • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself...................... •...
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  • Page 11: Table Of Contents

    (10) Undulated printing at the right edge (scanning start position)............1-4-14 1-4-4 Electric problems ..........................1-4-15 1-4-5 Mechanical problems ..........................1-4-18 1-5 Assembly and Disassembly 1-5-1 Precautions for assembly and disassembly....................1-5-1 (1) Precautions ............................1-5-1 (2) Drum..............................1-5-1 (3) Toner ..............................1-5-1 (4) How to tell a genuine Kyocera Mita toner container................1-5-2...
  • Page 12 1-5-2 Outer covers ............................1-5-3 (1) Detaching and refitting the left cover and right cover ................1-5-3 1-5-3 Paper feed section ..........................1-5-6 (1) Detaching and refitting the paper feed assembly (paper feed roller and pickup roller) .....1-5-6 (2) Detaching and refitting the retard roller assembly................1-5-8 (3) Detaching and refitting the MP paper feed roller................1-5-10 (4) Note on removing and Installing the upper registration roller and lower registration roller .....1-5-12 1-5-4 Optical section ............................1-5-13...
  • Page 13 2-3-2 Control PWB ............................2-3-3 2-3-3 Scanner PWB ............................2-3-9 2-4 Appendixes 2-4-1 Appendixes .............................2-4-1 (1) Wiring diagram ..........................2-4-1 (2) Repetitive defects gauge........................2-4-3 (3) Maintenance parts list ........................2-4-4...
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  • Page 15: Specifications

    2H9-1 1-1 Specifications 1-1-1 Specifications Type ..........Desktop Printing method....... Electrophotography by semiconductor laser, single drum system Originals.......... Sheet, Book, 3-dimensional objects (maximum original size: Folio/Legal) Original feed system ....... Contact glass: fixed Document processor (optional): sheet-through Paper weight........Cassette: 60 to 120 g/m (Duplex: 60 to 120 g/m µ...
  • Page 16 Power source........120 V AC, 60 Hz, more than 7.8 A 220 - 240 V AC, 50/60 Hz, more than 4.0 A Power consumption ......During printing: 479.9 W (U.S.A./Canada), 470 W (European countries) During standby: 83.8 W (U.S.A./Canada), 83.4 W (European countries) Low power mode: 82.6 W (U.S.A./Canada), 82.3 W (European countries) During sleep mode: 8.0 W (U.S.A./Canada), 8.8 W (European countries) Power off: 0 W...

  • Page 17: Parts Names

    2H9-1 1-1-2 Parts names (1) Overall Figure 1-1-1 Original cover Lock lever 17. MP (Multi-Purpose) tray Platen (contact glass) 10. Toner container 18. MP tray extension Original size Indicator plate 11. Top tray 19. USB Interface connector Operation panel 12. Paper length guide 20.
  • Page 18 2H9-1 (2) Operation panel 15 16 17 22 23 Figure 1-1-2 System menu/Counter key 11. Send key (LED) 22. Power key 12. Shift Lock key (LED) 23. Main power indicator (LED) 13. Left Select key 24. Attention indicator Status/Job Cancel key (LED) 14.

  • Page 19: Machine Cross Section

    1-1-3 Machine cross section Paper path Paper path (option) Light path Figure 1-1-3 Cassette Laser scanner unit (LSU) MP tray Transfer/separation section Paper feed/conveying section 10. Fuser section Toner container 11. Exit section Developing unit 12. Duplex/conveying section Main charger unit 13.
  • Page 20 This page is intentionally left blank. 1-1-6...

  • Page 21: Installation Environment

    1-2 Installation 1-2-1 Installation environment ° ° Temperature: 10 to 32.5 C/50 to 90.5 Humidity: 15 to 80%RH Power supply:120 V AC, 7.8 A 220 - 240 V AC, 4.0 A ± ± Power source frequency: 50 Hz 0.3%/60 Hz 0.3% Installation location Avoid direct sunlight or bright lighting.

  • Page 22: Unpacking

    2H9-1 1-2-2 Unpacking (1) Unpacking 120 V AC model 220-240 V AC model Figure 1-2-2 Printer 10. Toner container 19. EEA information leaflet** Outer case 11. Plastic bag 20. Setup guide* Inner frame 12. Power cord 21. Quick guide* 13. Plastic bag (250 × 600) Bottom pad L 22.

  • Page 23: Removing The Tapes

    (2) Removing the tapes <Procedure> 1. Remove two tapes. 2. Open the sheet. Tapes Sheet Figure 1-2-3 3. Open the original cover. 4. Remove the sheet. 5. Remove the paper. Sheet Original cover Paper Figure 1-2-4 1-2-3...
  • Page 24 6. Remove nine tapes. Tape Tapes Tapes Tapes Tapes Figure 1-2-5 1-2-4...

  • Page 25: Installing The Expansion Memory (Option)

    1-2-3 Installing the expansion memory (option) <Procedure> 1. Turn off the main power switch. Caution: Do not insert or remove expansion memory while machine power is on. Doing so may cause damage to the machine and the expansion memory. 2. Remove the right side cover. 3.
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  • Page 27: Maintenance Mode

    2H9-1 1-3 Maintenance Mode 1-3-1 Maintenance mode The machine is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a maintenance item Start Enter “10871087” using Maintenance mode is entered. the numeric keys. Enter the maintenance item number using the cursor left/right keys The maintenance item is...

  • Page 28: Maintenance Modes Item List

    2H9-1 (2) Maintenance modes item list Section Item Content of maintenance item Initial setting* General U000 Outputting an own-status report U001 Exiting the maintenance mode U002 Setting the factory default data U004 Displaying the machine number U019 Displaying the ROM version Initialization U021 Initializing counters and mode settings...
  • Page 29 2H9-2 Section Item Content of maintenance item Initial setting* Operation U200 Turning all LEDs on panel and U203 Checking DP operation support U207 Checking the operation panel keys equipment U222 Setting the IC card type U223 Operation panel lock U243 Checking the operation of the DP motor solenoids and clutch U244 Checking the DP sensors...

  • Page 30: Contents Of The Maintenance Mode Items

    2H9-2 (3) Contents of the maintenance mode items Maintenance Description item No. Outputting an own-status report U000 Description Outputs lists of the current settings of the maintenance items and paper jam and service call occurrences. Outputs the event log. Also sends output data to the USB memory. Printing a report is disabled either when a job is remaining in the buffer or when [Pause All Print Jobs] is pressed to halt printing.

  • Page 31: Event Log

    2H9-2 Maintenance Description item No. Event log U000 Event Log Firmware version 2H9_2F00.001.177 2009.04.17 Paper Jam Log Service Call Log Count. Event Count. Service Code Descriprions 7881214 01.0060 9876543 10.01.08.01.01 578944 01.0120 666554 10.01.08.01.02 5296 01.4000 4988 10.01.08.01.01 5295 01.3100 4988 10.01.08.01.02 2099...
  • Page 32 2H9-2 Maintenance Description item No. U000 Items Description Service Call Log Count. Service Code Remembers 1 to 8 of The total page count at Self diagnostic error occurrence of self diag- the time of the self code nostics error. If the diagnostics error.
  • Page 33 2H9-2 Maintenance Description item No. Exiting the maintenance mode U001 Description Exits the maintenance mode and returns to the normal copy mode. Purpose To exit the maintenance mode. Method Press the start key. The normal copy mode is entered. Setting the factory default data U002 Description Restores the machine conditions to the factory default settings.
  • Page 34 2H9-1 Maintenance Description item No. Initializing counters and mode settings U021 Description Initializes all settings, except those pertinent to the type of machine, namely each counter, service call history and mode setting. Also initializes backup RAM according to region specification selected in maintenance item U252 Setting the destination.
  • Page 35 2H9-1 Maintenance Description item No. Checking motor operation U030 Description Drives each motor. Purpose To check the operation of each motor. Method 1. Press the start key. 2. Select the motor to be operated using the cursor up/down keys. 3. Press the start key. The operation starts. Display Operation MAIN...
  • Page 36 2H9-1 Maintenance Description item No. Checking clutch operation U032 Description Turns each clutch on. Purpose To check the operation of each clutch. Method 1. Press the start key. 2. Select the clutch to be operated using the cursor up/down keys. 3.
  • Page 37 2H9-1 Maintenance Description item No. Adjusting the print start timing U034 Description Adjusts the leading edge registration or center line. Purpose Make the adjustment if there is a regular error between the leading edges of the copy image and original. Make the adjustment if there is a regular error between the center lines of the copy image and original.
  • Page 38 2H9-1 Maintenance Description item No. Adjustment: Center line adjustment U034 1. Select the item to be adjusted using the cursor up/down keys. Display Description Setting Initial Change in range setting value per step LEFT Adjustment of reference value 0 to 1180 0.04 mm MP TRAY Paper feed from MP tray*...
  • Page 39 2H9-2 Maintenance Description item No. Adjusting the deflection in the paper U051 Description Adjusts the deflection in the paper. Purpose Make the adjustment if the leading edge of the copy image is missing or varies randomly, or if the copy paper is Z-folded.
  • Page 40 2H9-2 Maintenance Description item No. Setting the adjustment of the motor speed U053 Description Performs fine adjustment of the speeds of the motor. Purpose To adjust the speed of the motor when the magnification in the auxiliary scanning direction is not correct. Method 1.
  • Page 41 2H9-1 Maintenance Description item No. Adjusting the shading position U063 Description Changes the shading position of the scanner. Purpose Used when white lines continue to appear longitudinally on the image after the shading plate is cleaned. This is due to flaws or stains inside the shading plate. To prevent this problem, the shading position should be changed so that shading is possible without being affected by the flaws or stains.
  • Page 42 2H9-1 Maintenance Description item No. Adjusting the scanner magnification U065 Description Adjusts the magnification of the original scanning. Purpose Make the adjustment if the magnification in the main scanning direction is incorrect. Make the adjustment if the magnification in the auxiliary scanning direction is incorrect. Caution Adjust the magnification of the scanner in the following order.
  • Page 43 2H9-1 Maintenance Description item No. Adjusting the scanner leading edge registration U066 Description Adjusts the scanner leading edge registration of the original scanning. Purpose Make the adjustment if there is a regular error between the leading edges of the copy image and original. Adjustment 1.
  • Page 44 2H9-1 Maintenance Description item No. Adjusting the scanner center line U067 Description Adjusts the scanner center line of the original scanning. Purpose Make the adjustment if there is a regular error between the center lines of the copy image and original. Adjustment 1.
  • Page 45 2H9-1 Maintenance Description item No. Adjusting the scanning position for originals from the DP U068 Description Adjusts the position for scanning originals from the DP. Performs the test copy at the four scanning positions after adjusting. Purpose Used when the image fogging occurs because the scanning position is not proper when the DP is used. Run U071 to adjust the timing of DP leading edge when the scanning position is changed.
  • Page 46 2H9-1 Maintenance Description item No. Adjusting the DP magnification U070 Description Adjusts the DP original scanning speed. Purpose Make the adjustment if the magnification is incorrect in the auxiliary scanning direction when the DP is used. Method 1. Press the start key. Display Description Setting...
  • Page 47 2H9-1 Maintenance Description item No. Adjusting the DP scanning timing U071 Description Adjusts the DP original scanning timing. Purpose Make the adjustment if there is a regular error between the leading or trailing edges of the original and the copy image when the DP is used. Method 1.
  • Page 48 2H9-1 Maintenance Description item No. Adjustment: Trailing edge registration U071 1. Press the system menu/counter key. 2. Place an original on the DP and press the start key to make a test copy. 3. Press the system menu/counter key. 4. Change the setting value using the cursor left/right keys or numeric keys. For copy example 1, increase the value.
  • Page 49 2H9-1 Maintenance Description item No. Adjusting the DP center line U072 Description Adjusts the scanning start position for the DP original. Purpose Make the adjustment if there is a regular error between the centers of the original and the copy image when the DP is used.
  • Page 50 2H9-1 Maintenance Description item No. Checking scanner operation U073 Description Simulates the scanner operation under arbitrary conditions. Purpose To check scanner operation. Start 1. Press the start key. 2. Select the item to be operated using the cursor up/down keys. Display Description SCANNER MOTOR...
  • Page 51 2H9-1 Maintenance Description item No. Setting DP reading position modification operation U087 Description The presence or absence of dust is determined by comparing the scan data of the original trailing edge and that taken after the original is conveyed past the DP original scanning position. If dust is identified, the DP original scanning position is adjusted for the following originals.
  • Page 52 2H9-1 Maintenance Description item No. Outputting a MIP-PG pattern U089 Description Selects and outputs the MIP-PG pattern created in the machine. Purpose To check copier status other than scanner when adjusting image printing, using MIP-PG pattern output (with- out scanning). Method 1.
  • Page 53 2H9-1 Maintenance Description item No. Method: 256-Level U089 1. Select [256-Level] using the cursor up/down keys and press the start key. 2. Select [HTFM1], [HTFM2], [Dither1] or [Dither2] using the cursor up/down keys and press the start key. 3. Select [ON] or [OFF] using the cursor up/down keys and press the start key. 4.
  • Page 54 2H9-2 Maintenance Description item No. Setting the main high voltage U100 Description Controls the main charger high voltage to optimize the surface potential. Purpose To change the setting value to adjust the image if an image failure (background blur, etc.) occurs. Setting 1.
  • Page 55 2H9-2 Maintenance Description item No. Performing drum refresh operation U113 Description Sets the drum refresh operation. Purpose To operate when a faulty image (black line, etc.) occurs. Method 1. Press the start key. Setting Initial Display Description range setting DRUM REFRESH Setting the drum refresh operation ON/OFF 1 (ON) / 0 (OFF) ON TIME(sec)
  • Page 56 2H9-2 Maintenance Description item No. Setting toner loading operation U144 Description Sets toner loading operation after completion of copying. Toner is forcibly evacuated in case the average print- ing ratio for the number of printed pages assigned by [PAGE] is lower than the ratio defined by [RATIO]. Purpose To set whether or not toner is loaded on the drum after low density copying.
  • Page 57 2H9-2 Maintenance Description item No. Setting the fuser control temperature U161 Description Changes the fuser control temperature. Purpose Normally no change is necessary. However, can be used to prevent curling or creasing of paper, or solve a fuser problem on thick paper. Method 1.
  • Page 58 2H9-1 Maintenance Description item No. Checking DP operation U203 Description Simulates the original conveying operation separately in the DP. Purpose To check the DP operation. Method 1. Press the start key. 2. Place an original in the DP if running this simulation with paper. 3.
  • Page 59 2H9-2 Maintenance Description item No. Setting the IC card type U222 Description Sets the IC card type. This is an optional device which is currently supported only by Japanese specification machines, so no setting is necessary. Operation panel lock U223 Description Sets the operation panel lock function to ON or OFF.
  • Page 60 2H9-1 Maintenance Description item No. Checking the DP sensors U244 Description Displays the status of the respective sensors in the DP. Purpose To check if respective sensors in the DP operate correctly. Method 1. Press the start key. 2. Turn the respective sensors on and off manually to check the status. When a sensor is detected to be in the ON position, the display for that sensor will be highlighted.
  • Page 61 2H9-1 Maintenance Description item No. Setting the destination U252 Description Switches the operations and screens of the machine according to the destination. Purpose To be executed after initializing the backup RAM, in order to return the setting to the value before replacement or initialization.
  • Page 62 2H9-1 Maintenance Description item No. Selecting the timing for copy counting U260 Description Changes the copy count timing for the total counter and other counters. Purpose To be set according to user request. Setting 1. Press the start key. 2. Select the copy count timing using the cursor up/down keys. Display Description FEED...
  • Page 63 2H9-1 Maintenance Description item No. Setting service status page U285 Description Determines displaying the digital dot coverage report on reporting. Purpose According to user request, changes the setting. Setting 1. Press the start key. 2. Select ON or OFF using the cursor up/down keys. Display Description Displays the digital dot coverage...
  • Page 64 2H9-1 Maintenance Description item No. Switching between duplex/simplex copy mode U343 Description Switches the initial setting between duplex and simplex copy. Purpose To be set according to frequency of use: set to the more frequently used mode. Setting 1. Press the start key. 2.
  • Page 65 2H9-2 Maintenance Description item No. Adjusting margins of image printing U402 Description Adjusts margins for image printing. Purpose Make the adjustment if margins are incorrect. Adjustment 1. Press the start key. 2. Select the item to be adjusted using the cursor up/down keys. Setting Initial Change in...
  • Page 66 2H9-1 Maintenance Description item No. Adjusting margins for scanning an original on the platen U403 Description Adjusts margins for scanning the original on the platen. Purpose Make the adjustment if margins are incorrect. Adjustment 1. Press the start key. 2. Select the item to be adjusted using the cursor up/down keys. Setting Initial Change in...
  • Page 67 2H9-1 Maintenance Description item No. Adjusting margins for scanning an original from the DP U404 Description Adjusts margins for scanning the original from the DP. Purpose Make the adjustment if margins are incorrect when the optional DP is used. Caution Before making this adjustment, ensure that the following adjustments have been made in maintenance mode.
  • Page 68 2H9-1 Maintenance Description item No. Adjusting the leading edge registration for memory image printing U407 Description Adjusts the leading edge registration during memory copying. Purpose Make the following adjustment if there is a regular error between the leading edge of the copy image on the front face and that on the reverse face during duplex switchback copying.
  • Page 69 2H9-1 Maintenance Description item No. Adjusting the scanner automatically U411 Description Uses the adjustment original suppled with DP and automatically adjusts the following items in the scanner and the DP scanning sections. Purpose To perform automatic adjustment of various items in the scanner and the DP scanning sections. Method 1.
  • Page 70 2H9-1 Maintenance Description item No. Setting the target U425 Description Enters the lab values that is indicated on the back of the chart (P/N: 302FZ56990) used for adjustment. Purpose Performs data input in order to correct for differences in originals during automatic adjustment. Method 1.
  • Page 71 2H9-1 Maintenance Description item No. U425 Leading edge 30 mm 148.5 mm 267 mm Left edge Black belt (a) 35 mm Black Black belt (b) belt (c) 110 mm [MAIN] = ((A + C) / 2 + B) / 2 [SUB LEAD] = ((D + F) / 2 + E) / 2 [SUB TAIL] = G...
  • Page 72 2H9-1 Maintenance Description item No. Checking/clearing the paper jam counts U903 Description Displays or clears the jam counts by jam locations. Purpose To check the paper jam status. Also to clear the jam counts after replacing consumable parts. Method 1. Press the start key. 2.
  • Page 73 2H9-1 Maintenance Description item No. Checking/clearing counts by optional devices U905 Description Displays or clears the counts of DP. Purpose To check the use of DP. Also to clear the counts after replacing consumable parts. Method 1. Press the start key. Display Description No.
  • Page 74 2H9-2 Maintenance Description item No. Setting backup data reading/writing U917 Description Retrieves the backup data to a USB memory from the machine; or writes the data from the USB memory to the machine. Purpose To store and write data when replacing the control PWB. Method 1.
  • Page 75 2H9-1 Maintenance Description item No. Checking the copy counts U920 Description Checks the copy counts. Purpose To check the copy counts. Method Press the start key. The current counts of copy counter and printer counter are displayed. Completion Press the stop key. The screen for selecting a maintenance item No. is displayed. Clearing the all copy counts and machine life counts (one time only) U927 Description...
  • Page 76 2H9-1 Maintenance Description item No. Checking of toner area code U969 Description Displays the toner area code. Purpose To check the toner area code. Method 1. Press the start key. The toner area code is displayed. Completion Press the stop key. The screen for selecting a maintenance item No. is displayed. Data capture mode U977 Description...
  • Page 77 2H9-1 Maintenance Description item No. Outputting a VTC-PG pattern U993 Description Selects and outputs a VTC-PG pattern created in the machine. Purpose When performing respective image printing adjustments, used to check the machine status apart from that of the scanner with a non-scanned output VTC-PG pattern. Method 1.

  • Page 78: Management Mode

    2H9-1 1-3-2 Management mode In addition to a maintenance function for service, the machine is equipped with a management function which can be oper- ated by users (mainly by the administrator). In this management mode, settings such as default settings can be changed. (1) Using the management mode Start Press the System Menu/Counter key.

  • Page 79: Common Settings

    2H9-1 (2) Common Settings Adding a Custom Size and Media Type for Paper to Print 1. Select [Orig./Paper Set.] using the cursor up/down Switching the Language for Display [Language] keys. 1. Select [Language] using the cursor up/down keys. 2. Press the OK key. 2.
  • Page 80 2H9-1 Paper Weight Switching Unit of Measurement 1. Select [Orig./Paper Set.] using the cursor up/down 1. Select [Measurement] using the cursor up/down keys. keys. 2. Press the OK key. 2. Press the OK key. 3. Select [MP Tray Set.] using the cursor up/down 3.
  • Page 81 2H9-1 Scan Resolution Subject/Body 1. Select [Function Default] using the cursor up/down 1. Select [Function Default] using the cursor up/down keys. keys. 2. Press the OK key. 2. Press the OK key. 3. Select [Scan Resolution] using the cursor up/down 3.
  • Page 82 2H9-1 Border Line Color TIFF Comp. 1. Select [Function Default] using the cursor up/down 1. Select [Function Default] using the cursor up/down keys. keys. 2. Press the OK key. 2. Press the OK key. 3. Select [Detail Setting] using the cursor up/down 3.

  • Page 83: Copy Settings

    2H9-1 (3) Copy Settings (4) Sending Settings Photo Processing Select Key Set 1. Select [Photo Processing] using the cursor up/ 1. Select [Select Key Set.] using the cursor up/down down keys. keys. 2. Press the OK key. 2. Press the OK key. 3.

  • Page 84: Printer Settings

    2H9-1 (6) Printer Settings Orientation 1. Select [Orientation] using the cursor up/down keys. 2. Press the OK key. Emuration Set 3. Select [Portrait] or [Landscape]. 1. Select [Emuration Set.] using the cursor up/down 4. Press the OK key. keys. 2. Press the OK key. 3.

  • Page 85: Adjustment/Maintenance

    2H9-1 (8) Adjustment/Maintenance (9) Date/Timer Copy Denst. Adj. Date/Time 1. Select [Copy Denst. Adj.] using the cursor up/down 1. Select [Date Setting] using the cursor up/down keys. keys. 2. Press the OK key. 2. Press the OK key. 3. Select [Auto] or [Manual]. 3.

  • Page 86: Editing Destination (Address Book/Adding One-Touch Keys)

    2H9-1 Error Clear Timer Unusable Time 1. Select [Timer Setting] using the cursor up/down 1. Select [Timer Setting] using the cursor up/down keys. keys. 2. Press the OK key. 2. Press the OK key. 3. Select [Err. Clear Timer] using the cursor up/down 3.

  • Page 87: Restarting The System

    2H9-1 (11) Restarting the System TCP/IP (IPv6) Setup 1. Select [Network Setting] using the cursor up/down keys. Restarting the System 2. Press the OK key. 1. Select [Restart] using the cursor up/down keys. 3. Select [TCP/IP Settings] using the cursor up/down 2.
  • Page 88 2H9-1 Protocol Detail LDAP Security 1. Select [Network Setting] using the cursor up/down 1. Select [Network Setting] using the cursor up/down keys. keys. 2. Press the OK key. 2. Press the OK key. 3. Select [TCP/IP Settings] using the cursor up/down 3.

  • Page 89: User Login Administration

    2H9-1 (13) User Login Administration Changing User Properties 1. Select [User Login Set.] using the cursor up/down keys. Enabling/Disabling User Login Administration 2. Press the OK key. 1. Select [User Login Set.] using the cursor up/down 3. Select [Local User List] using the cursor up/down keys.
  • Page 90 2H9-1 Managing Accounts Default Counter Limit 1. Select [Job Account. Set.] using the cursor up/down 1. Select [Job Account. Set.] using the cursor up/down keys. keys. 2. Press the OK key. 2. Press the OK key. 3. Select [Account. List] using the cursor up/down 3.

  • Page 91: Paper Misfeed Detection

    1-4 Troubleshooting 1-4-1 Paper misfeed detection (1) Paper misfeed indication When a paper misfeed occurs, the printer immediately stops printing and displays the paper misfeed message on the operation panel. To remove paper misfed in the printer, pull out the paper cassette, open the front cover, rear cover or duplexer’s cover, or remove the drum unit.

  • Page 92: Self-Diagnostic Function

    1-4-2 Self-diagnostic function (1) Self-diagnostic function This printer is equipped with self-diagnostic function. When a problem is detected, the printer stops printing and display an error message on the operation panel. An error message consists of a message prompting a contact to service personnel, total print count, and a four-digit error code indicating the type of the error.

  • Page 93: Self Diagnostic Codes

    2H9-1 (2) Self diagnostic codes Remarks Code Contents Causes Check procedures/corrective measures 0100 Backup memory device error Defective flash Replace the control PWB (See page 1-5- memory. 39). Defective control Replace the control PWB (See page 1-5- PWB. 39). 0120 MAC address data error Defective flash Replace the control PWB (See page 1-5-...
  • Page 94 Remarks Code Contents Causes Check procedures/corrective measures 0420 Paper feeder communication error Improper installa- Follow installation instruction carefully again. Communication error between control tion paper feeder. PWB and optional paper feeder. Defective harness Reinsert the connector. Also check for conti- between control nuity within the connector harness.
  • Page 95 2H9-1 Remarks Code Contents Causes Check procedures/corrective measures 2620 PF paper feed motor error Defective harness Reinsert the connector. Also check for conti- (Optional paper feeder 2) between PF paper nuity within the connector harness. If none, The PF paper feed motor of paper feed motor and PF remedy or replace the harness (Refer to the feeder 2 ready input is not given for 2 s...
  • Page 96 2H9-1 Remarks Code Contents Causes Check procedures/corrective measures 3200 Exposure lamp error Defective FFC Reinsert the FFC. Also check for continuity The exposure lamp is not turned on. between scanner within the FFC. If none, remedy or replace PWB (YC103) and the FFC.
  • Page 97 2H9-1 Remarks Code Contents Causes Check procedures/corrective measures 3500 CPU - ASIC (CCD PWB) communica- Defective FFC Replace the image scanner unit (ISU) (See tion error between CCD page 1-5-21). An error code is detected. PWB (YC1) and control PWB (YC8).
  • Page 98 Remarks Code Contents Causes Check procedures/corrective measures 6030 Broken fuser thermistor wire Poor contact in the Reinsert the connector (See page 1-5-34). Input from fuser thermistor is 0 (A/D fuser thermistor value). connector termi- nals. Broken fuser ther- Replace the fuser unit (See page 1-5-34). mistor wire.
  • Page 99 2H9-1 Remarks Code Contents Causes Check procedures/corrective measures F020 Control PWB RAM checksum error Defective main Turn the main power switch off/on to restart memory (RAM) on the printer. If the error is not resolved, the control PWB. replace control PWB (See page 1-5-39). Defective Replace the expanded memory (DIMM).

  • Page 100: Image Formation Problems

    1-4-3 Image formation problems (1)Completely blank (2)All-black printout. (3)Dropouts. (4)Black dots. (5)Black horizontal printout. streaks. See page 1-4-11 See page 1-4-11 See page 1-4-12 See page 1-4-12 See page 1-4-12 (6)Black vertical (7)Unsharpness. (8)Gray background. (9)Dirt on the top (10)Undulated print- streaks.

  • Page 101: All-Black Printout

    (1) Completely blank printout. Print example Causes Check procedures/corrective measures Connection failure with DP connector If a blank copy is made because the original loaded in the DP (Only when the option DP is installed) is not fed after the Start key is pressed: Turn the main power switch off, investigate the DP connector connection, and firmly connect the DP connector.

  • Page 102: Dropouts

    (3) Dropouts. Print example Causes Check procedures/corrective measures Defective developing roller (develop- If the defects occur at regular intervals of 62.8 mm/2 " (See ing unit). page 2-4-3), the problem may be the damaged developing roller (in the developing unit). Replace the developing unit (See page 1-5-29).

  • Page 103: Black Vertical Streaks

    (6) Black vertical streaks. Print example Causes Check procedures/corrective measures Adhesion of oxide to main charger Remove the drum unit (See page 1-5-30). Slide the charger wire. cleaner (green) left and right 2 or 3 times to clean the charger wire, then return it to its original position (CLEANER HOME POSITION).

  • Page 104: Dirt On The Top Edge Or Back Of The Paper

    (9) Dirt on the top edge or back of the paper. Print example Causes Check procedures/corrective measures Toner contamination in various parts. Dirty edges and back of the paper can be caused by toner accumulated on such parts as the paper chute guide, paper conveying paths, the bottom of the drum and developing unit, and the fuser unit inlet.

  • Page 105: Electric Problems

    1-4-4 Electric problems Problem Causes Check procedures/corrective measures (1)The machine does No electricity at the power Measure the input voltage. not operate when the outlet. main power switch is The power cord is not Check the contact between the power plug and the outlet. turned on.
  • Page 106 Problem Causes Check procedures/corrective measures (6)Paper feed clutch Broken paper feed clutch Check for continuity across the coil. If none, replace the paper does not operate. coil. feed clutch. Defective harness between Reinsert the connector. Also check for continuity within the con- paper feed clutch and con- nector harness.
  • Page 107 Problem Causes Check procedures/corrective measures (12)A paper jam in A piece of paper torn from Check and remove if any. the paper feed/con- paper is caught around reg- veying section or istration sensor or exit sen- fuser section is indi- sor.

  • Page 108: Mechanical Problems

    1-4-5 Mechanical problems Problem Causes/check procedures Corrective measures (1)No primary paper Check if the surfaces of the paper feed roller Clean with isopropyl alcohol. feed. is dirty with paper powder. Check if the paper feed roller is deformed. Check visually and replace any deformed paper feed roller (assembly) (See page 1-5- Defective paper feed clutch installation.

  • Page 109: Assembly And Disassembly

    1-5 Assembly and Disassembly 1-5-1 Precautions for assembly and disassembly (1) Precautions Before starting disassembly, press the Power key on the operation panel to off. Make sure that the Power lamp is off before turning off the main power switch. And then unplug the power cable from the wall outlet. When the fax kit is installed, be sure to disconnect the modular code before starting disassembly.

  • Page 110: How To Tell A Genuine Kyocera Mita Toner Container

    A black-colored band when seen through the left side window ( A shiny or gold-colored band when seen through the right side window ( The above will reveal that the toner container is a genuine Kyocera Mita branded toner container, otherwise, it is a coun- terfeit.

  • Page 111: Outer Covers

    2H9-1 1-5-2 Outer covers (1) Detaching and refitting the left cover and right cover Procedure 1. Remove the screw. 2. Unhook four hooks and then remove the Hook rear upper cover. Rear upper cover Hook Hook Hook Rear upper cover Screw Figure 1-5-3 3.
  • Page 112 6. Unhook seven hooks and then remove the right cover. Hook Hook Hook Hook Hook Hook Hook Right cover Right cover Right cover Figure 1-5-5 1-5-4...
  • Page 113 7. Unhook six hooks and then remove the left cover. Hook Hook Hook Hook Hook Hook Left cover Left cover Left cover Figure 1-5-6 1-5-5...

  • Page 114: Paper Feed Section

    1-5-3 Paper feed section (1) Detaching and refitting the paper feed assembly (paper feed roller and pickup roller) Procedure 1. Remove the cassette. Cassette Figure 1-5-7 2. Slide the feed shaft. 3. While pressing the lever and then remove the paper feed roller assembly. Feed shaft Paper feed roller assembly...
  • Page 115 4. Check or replace the paper feed assembly Paper feed roller and refit all the removed parts. Feed shaft assembly When refitting the paper feed roller assem- bly, be sure to align the paper feed roller pivot with the slotted hole on the feed shaft. Paper feed roller assembly Feed shaft...

  • Page 116: Detaching And Refitting The Retard Roller Assembly

    (2) Detaching and refitting the retard roller assembly Procedure 1. Remove the cassette (See page 1-5-6). Retard guide 2. Push the bottom plate down until it locks. Hook 3. Unhook two hooks and then remove the retard guide. Hook Cassestte Bottom plate Retard guide Cassette...
  • Page 117 5. Check or replace the retard roller assembly and refit all the removed parts. Retard roller assembly Caution: Before refitting the retard roller assembly, firmly install the spring onto the projection of the retard roller assembly. Projection Spring Figure 1-5-12 1-5-9...

  • Page 118: Detaching And Refitting The Mp Paper Feed Roller

    (3) Detaching and refitting the MP paper feed roller Procedure 1. Open the front cover. 2. Pull the MP feed holder (lever) down. 3. Slide the MP feed holder. 4. Remove the MP paper feed roller. MP paper feed roller Front cover MP paper feed roller MP feed holder...
  • Page 119 5. Check or replace the MP paper feed roller and refit all the removed parts. Pivot When refitting the MP paper feed roller, be sure to align the paper feed roller pivot with the slotted hole on the MPF feed shaft. When refitting the MP paper feed roller, be sure to align the MPF feed shaft pivot with the slotted hole on the MP paper feed roller.

  • Page 120: Note On Removing And Installing The Upper Registration Roller And Lower Registration Roller

    2H9-1 (4) Note on removing and Installing the upper registration roller and lower registration roller When reinstalling the upper registration roller or lower registration roller, be sure to use a new registration L spring and registration R spring. Otherwise, paper feeding may be deteriorated due to the spring hooks possibly being distorted dur- ing the spring is unhooked.

  • Page 121: Optical Section

    1-5-4 Optical section (1) Detaching and refitting the original cover Procedure 1. Pull the original cover out. Original cover Figure 1-5-16 1-5-13...

  • Page 122: Detaching And Refitting The Scanner Unit (Lsu)

    (2) Detaching and refitting the scanner unit (LSU) Procedure 1. Remove the original cover (See page 1-5- 13). Control PWB 2. Remove the left cover and right cover (See page 1-5-3). 3. Remove the FFC and connector from the control PWB. 4.
  • Page 123 5. Release three clamps and then remove the wires. Wires Clamp Wires Clamp Clamp Figure 1-5-18 6. Remove two screws. Screw Screw Screw Screw Screw Figure 1-5-19 1-5-15...
  • Page 124 7. Unhook four hooks and then remove the Scanner unit scanner unit. Hooks Hooks Figure 1-5-20 1-5-16...

  • Page 125: Detaching And Refitting The Laser Scanner Unit (Lsu)

    (3) Detaching and refitting the laser scanner unit (LSU) Procedure 1. Remove the scanner unit (See page 1-5- Control PWB 14). 2. Remove the screw and then remove the grounding terminal. 3. Remove two connectors from the control PWB. Connector Connector YC10 Grounding...
  • Page 126 4. Remove the wires from three clamps. 5. Remove the connector from the power Clamp source PWB. Clamps Power source Power source YC106 Connector Figure 1-5-22 6. Unhook four hooks and then remove the frame left duct. 7. Remove the wires from the clamp. Frame left duct Hook Hook...
  • Page 127 8. Remove the stopper and then remove the top cover rack-L from the top cover. Top cover Top cover rack-L Top cover rack-L Top cover Stopper Figure 1-5-24 9. Remove four screws from the top cover. Screw Top cover Screw Screw Screw Figure 1-5-25...
  • Page 128 10. Unhook two hooks and then remove the top cover. 11. Remove the connector. Hook Hook Top cover Connector Figure 1-5-26 12. Release the clamp and then pull out the Screws wires. 13. Remove four screws and then remove the Screws laser scanner unit (LSU).

  • Page 129: Replacing The Image Scanner Unit (Isu)

    2H9-1 (4) Replacing the image scanner unit (ISU) Procedure Removing the image scanner unit (ISU) 1. Remove the DP (See page 1-5-13). 2. Unhook two hooks by using a flat screw- driver from the pits. Operation panel 3. Remove the connector and then remove the operation panel.
  • Page 130 2H9-1 6. Move the image scanner unit (ISU) in the middle of the ISU shaft. ISU shaft 7. Detach the ISU shaft from the holder by lift- ing it. 8. Pull the ISU shaft out from the ISU. ISU shaft Image scanner unit (ISU)
  • Page 131 2H9-1 11. Remove the FFC center stopper. FFC center stopper Figure 1-5-32 12. Remove the FFC from the FFC tape D. 13. Remove the ferrite core from the pit. 14. Remove the FFC from the FFC tape A. Ferrite core FFC tape A FFC tape D Figure 1-5-33...
  • Page 132 2H9-1 15. Fold the end of the FFC and then pull the FFC out from the ISU lower frame. 16. Remove the FFC tape D and A from the ISU lower frame. 17. Clean the adhesive residue of the FFC tape D and A.
  • Page 133 2H9-1 Installing the image scanner unit (ISU) 19. Peel off the protective seal on one side from the FFC tape D. FFC tape A 20. Stick the FFC tape D on the ISU lower frame, aligned with the marking of the frame.
  • Page 134 2H9-1 24. Peel off the protective seal from the FFC tape D. 25. Align the line marking on the FFC with the rib on the ISU lower frame, then fix the FFC to the FFC tape D. Ferrite core 26. Install the ferrite core in the pit. 27.

  • Page 135: Detaching And Refitting The Exposure Lamp And Inverter Pwb

    (5) Detaching and refitting the exposure lamp and inverter PWB Procedure 1. Remove the original cover (See page 1-5- 13). 2. Move the image scanner unit (ISU) unit to Image scanner the center. unit (ISU) 3. Unhook five hooks and then remove the lamp mount.
  • Page 136 Inverter PWB 5. Remove the connector. 6. Remove the screw and then remove the Connector inverter PWB. Screw 7. Check or replace the inverter PWB and refit all the removed parts. Caution: Replace F1 with a fuse rated 250 V ac, 0.75 A, non-time delay, (when F1 fuse is replaced.) Inverter PWB...

  • Page 137: Developing Section

    2H9-2 1-5-5 Developing section (1) Detaching and refitting the developing unit Procedure 1. Open the front cover. 2. Remove the developing unit. 3. Check or replace the developing unit and refit all the removed parts. NOTE: When the periodic maintenance (replacing Developing the maintenance kit, see page 2-4-4), per- unit...

  • Page 138: Drum Section

    2H9-2 1-5-6 Drum section (1) Detaching and refitting the drum unit Procedure 1. Remove the developing unit (See page 1-5- 29). 2. Remove the drum unit. 3. Check or replace the drum unit and refit all the removed parts. NOTE: When the periodic maintenance (replacing Drum unit the maintenance kit, see page 2-4-4), per-...

  • Page 139: Detaching And Refitting The Main Charger Unit

    (2) Detaching and refitting the main charger unit Procedure 1. Remove the developing unit (See page 1-5- 29). 2. Remove the drum unit (See page 1-5-30). 3. Remove the tape. Tape 4. While pushing on the main plate , slide Main charger unit the main charger unit Drum unit...

  • Page 140: Transfer/Separation Section

    1-5-7 Transfer/separation section (1) Detaching and refitting the transfer roller Procedure 1. Remove the developing unit (See page 1-5- 29). 2. Remove the drum unit (See page 1-5-30). 3. Slide the paper chute guide and unhook the hooks. 4. Remove the paper chute guide. Paper chute guide Paper chute guide Hook...
  • Page 141 5. Remove the transfer roller’s shaft from the Shaft both transfer bushes. 6. Remove the gear Z16 from the transfer roller. Transfer roller Shaft Transfer bush Transfer bush Transfer roller Gear Z16 Figure 1-5-49 7. Check or replace the transfer roller and refit all the removed parts.

  • Page 142: Fuser Section

    1-5-8 Fuser section (1) Detaching and refitting the fuser unit Procedure 1. Remove the left cover and right cover (See page 1-5-3). Clamp 2. Remove the wires from three clamps. 3. Remove the connector from the power source PWB. Clamps Power source YC105 Power source...
  • Page 143 6. Remove the connector from the power source PWB. Connector YC102 Power source PWB Connector Figure 1-5-53 7. Remove the connector from the control PWB. Control PWB Connector Figure 1-5-54 1-5-35...
  • Page 144 8. Remove the rear cover. Rear cover Figure 1-5-55 9. Remove two screws and then remove the fuser unit. Screw Fuser unit Screw Figure 1-5-56 1-5-36...
  • Page 145 10. Check or replace the fuser unit and refit all the removed parts. Caution: When reinstalling the fuser unit, tighten up a screw while pressing the fuser Fuser unit unit in order of 1 to 2. Screw Fuser unit Screw Figure 1-5-57 1-5-37...

  • Page 146: Switching The Fuser Pressure

    (2) Switching the fuser pressure The fuser pressure may be decreased to suppress the print quality problems such as paper creases and curls. It must be cautioned that decreasing the fuser pressure could cause loose toner fusing. Procedure 1. Remove the cassette (See page 1-5-6). 2.

  • Page 147: Pwbs

    1-5-9 PWBs (1) Detaching and refitting the control PWB Procedure 1. Remove the right cover (See page 1-5-3). 2. Remove the five connectors from the scan- YC109 ner PWB. YC104 YC108 3. Remove nineteen connectors and two FFCs form the control PWB. 4.
  • Page 148 5. Remove six screws and two grounding ter- Screw minal. Screw Grouniding terminal Screw Screw Grouniding terminal Screw Control PWB assembly Screws Figure 1-5-60 6. Unhook the hook and then remove the con- Hook trol PWB assembly. Control PWB assembly Control PWB assembly Figure 1-5-61 1-5-40...
  • Page 149 7. Remove five screws and then remove the Control PWB control PWB. Screw 8. Check or replace the control PWB and refit Screw all the removed parts. Screw To replace the control PWB, remove the EEPROM (U17) from the old control PWB and mount it to the new control PWB.

  • Page 150: Detaching And Refitting The Power Source Pwb

    (2) Detaching and refitting the power source PWB Procedure 1. Remove the left cover (See page 1-5-3). 2. Remove the wires from three clamps. 3. Remove five connectors from the power Clamp source PWB. Clamps Power source Connectors YC107 YC105 Power source YC108 YC106...
  • Page 151 6. Remove the screw and then detach the inlet mount. Screw Inlet mount Figure 1-5-65 7. Remove five screws. 8. Remove three connectors and then remove the power source PWB assembly. Connector Connector Connector Screw Screw Screw Power source PWB assembly Power source PWB Screws Connector...
  • Page 152 9. Remove four screws and then remove the Screw Screw power source PWB from the power source PWB plate. Power source PWB 10. Check or replace the power source PWB and refit all the removed parts. Screws Caution: The power source PWB sheet must be installed in the specified position.

  • Page 153: Detaching And Refitting The High Voltage Pwb

    (3) Detaching and refitting the high voltage PWB Procedure 1. Remove the developing unit (See page 1-5- 29). 2. Remove the drum unit (See page 1-5-30). 3. Remove the cassette (See page 1-5-6). 4. Remove the left cover and right cover (See page 1-5-3).
  • Page 154 11. Remove four screws. 12. Unhook three hooks and then remove the lower base cover. Screws Screws Lower base cover Hook Hook Hook Figure 1-5-70 1-5-46...
  • Page 155 13. Remove the spring. 14. Remove the cassette pin. Spring Cassette pin Cassette pin Figure 1-5-71 15. Remove two connectors and then remove the high voltage PWB. 16. Remove the cassette pin holder from the high voltage PWB. Connectors High voltage PWB High voltage PWB Cassette pin holder...
  • Page 156 17. Check or replace the high voltage PWB and refit all the removed parts. High voltage PWB When refitting the high voltage PWB, be careful about following points. - Position the ground plate so that it is atop the high voltage PWB. Grounding - Each interface is firmly in contact with each plate...

  • Page 157: Detaching And Refitting The Scanner Pwb

    2H9-1 (4) Detaching and refitting the scanner PWB Procedure 1. Remove the right cover (See page 1-5-3). 2. Remove six connectors and the FFC from the scanner PWB. YC109 YC104 YC108 YC103 YC102 YC101 YC105 Connectors Scanner PWB Scanner PWB Figure 1-5-74 3.

  • Page 158: Others

    1-5-10 Others (1) Detaching and refitting the main motor Procedure 1. Remove the right cover (See page 1-5-3). 2. Remove the connector. 3. Remove the M3 screw and two M4 screws. 4. Remove the main motor. 5. Check or replace the main motor and refit all the removed parts.

  • Page 159: Direction Of Installing The Left Cooling Fan Motor, Right Cooling Fan Motor And Power Source Fan Motor

    (2) Direction of installing the left cooling fan motor, right cooling fan motor and power source fan motor When detaching or refitting a fan motor, be careful of the airflow direction (intake or exhaust). Right cooling fan motor Intake Left cooling fan motor Exhaust Exhaust Power source...
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  • Page 161: Firmware

    1-6 Requirements on PWB Replacement 1-6-1 Firmware (1) Upgrading the firmware Follow the procedure below to upgrade the firmware of control PWB (main controller and engine) and scanner PWB. Preparation Extract the file that has the download firmware and put them in the USB Memory. Procedure 1.

  • Page 162: Remarks On Control Pwb Replacement

    1-6-2 Remarks on control PWB replacement When replacing the control PWB, remove the EEPROM (U17) from the control PWB that has been removed and then reattach it to the new control PWB. EEPROM Control PWB EEPROM Figure 1-6-2 1-6-2...

  • Page 163: Paper Feed/Conveying Section

    2-1 Mechanical Construction 2-1-1 Paper feed/conveying section Paper feed/conveying section consists of the paper feed unit that feeds paper from the cassette and the MP tray paper feed unit that feeds paper from the MP tray, and the paper conveying section that conveys the fed paper to the transfer/ separation section.

  • Page 164: Mp Tray Paper Feed Section

    (2) MP tray paper feed section Figure 2-1-3 MP tray paper feed section MP paper feed roller MPF frame MPF separation pad MPF guide R/L MPF separator (10) MPF base MPF bottom plate (11) MPF middle tray MPF friction pad (12) MPF upper tray MP paper sensor (13) MPF turn guide...

  • Page 165: Paper Conveying Section

    (3) Paper conveying section Figure 2-1-5 Paper conveying section Lower registration roller Upper registration roller Registration sensor Actuator (registration sensor) Feed pulley Control PWB MMOTRDYN YC17-3 MOTCLK YC17-4 Main motor REMOTEN YC17-5 REGDRN Registration YC20-2 clutch High voltage PWB Registration REGN sensor YC23-11...

  • Page 166: Drum Section

    2-1-2 Drum section (1) Drum section The durable layer of organic photoconductor (OPC) is coated over the aluminum cylinder base. The OPC tend to reduce its own electrical conductance when exposed to light. After a cyclic process of charging, exposure, and development, the electrostatic image is constituted over the OPC layer.

  • Page 167: Main Charger Unit

    (2) Main charger unit As the drum rotates in a “clean (neutral)” state, its photoconductive layer is given a uniform, positive (+) corona charge dis- persed by the main charger wire. Due to high-voltage scorotron charging, the charging wire can get contaminated by oxi- dization after a long run.

  • Page 168: Optical Section

    2-1-3 Optical section (1) Scanner unit Figure 2-1-10Scanner unit ISU belt ISU top frame ISU shaft ISU bottom frame ISU gear 63/32 Contact glass ISU motor DP contact glass (10) Image scanner unit (ISU) Size indicator plate 2-1-6...
  • Page 169 (2) Image scanner unit (ISU) The image scanner unit consists of an exposure lamp, four mirrors, a lens, a CCD PWB, and so on. Also an inverter PWB for driving the exposure lamp and a home position sensor for detecting the home position of the image scanner unit are incorporated.
  • Page 170 2H9-1 Original Contact glass Image scanner unit (ISU) Exposure Control CCD PWB lamp Inserter Mirrors and lens Scanner image sensor LAMP YC103-6 HPSW Home YC103-3 position sensor SCMOT1A, SCMOT2B YC104- SCMOT1B, SCMOT2A 1,2,3,4 motor Scanner unit Figure 2-1-12 Scanner unit block diagram 2-1-8...

  • Page 171: Laser Scanner Unit (Lsu)

    (3) Laser scanner unit (LSU) The charged surface of the drum is then scanned by the laser beam from the laser scanner unit. The laser beam (780 nm wavelength) beam is dispersed as the polygon motor revolves to reflect the laser beam over the drum.
  • Page 172 Figure 2-1-14 Laser scanner unit Polygon motor (mirror) Laser diode (APC PWB) Collimator lens Cylindrical lens F-θ lens F-θ lens PD mirror SOS lens Pin photo diode sensor (PD PWB) (10) LSU mirror 2-1-10...

  • Page 173: Developing Section

    2-1-4 Developing section The latent image constituted on the drum is developed into a visible image. The developing roller contains a 3-pole (S-NS) magnet roller and an aluminum cylinder rotating around the magnet roller. Toner attracts to the magnet sleeve since it is powdery ink made of black resin bound to iron particles.

  • Page 174: Transfer/Separation Section

    2-1-5 Transfer/separation section The transfer/separation section consists of the transfer roller, discharger brush and paper chute guide. A high voltage gen- erated by the high voltage PWB is applied to the transfer roller for transfer charging. Paper after transfer is separated from the drum.

  • Page 175: Cleaning Section

    2-1-6 Cleaning section After the transferring process, the drum needs to be physically cleaned of toner which is residual after the development process. The cleaning blade is constantly pressed against the drum and scrapes the residual toner off to the sweep roller. The waste toner is collected at the output end of the sweep roller and sent back to the toner container, into the waste toner reservoir.

  • Page 176: Fuser Section

    2-1-7 Fuser section The toner on the paper is molten and pressed into the paper as it passes between the heat roller and the press roller in the fuser unit. The heat roller has a heater lamp inside which continuously turns on and off by the fuser thermistor to maintain the constant temperature onto the heat roller surface.
  • Page 177 Fuser unit High Power Control PWB voltage source PWB Fuser thermal cutout HEATN YC103-6 YC23-5 YC102-1 SLEEP YC103-7 YC23-6 ZCROSS YC102-3 YC103-8 YC23-3 Fuser heater lamp Fuser thermistor THERM YC23-16 Figure 2-1-22 Fuser unit block diagram 2-1-15...

  • Page 178: Paper Exit Section

    2-1-8 Paper exit section The paper exit section transports the paper which passed the fuser unit towards the top tray. The paper which passed through the fuser unit turns on the actuator (exit sensor) in the fuser unit, and is led by the guide comprised of the rear cover, frame and the FD cover guide, finally reaching the upper FD roller.
  • Page 179 Fuser unit Control PWB EXITN YC19-3 Exit sensor Figure 2-1-24 Paper exit section block diagram 2-1-17...

  • Page 180: Duplex/Conveying Section

    2-1-9 Duplex/conveying section The duplex/conveying section consists of conveying path which sends the paper sent from the exit section to the paper feed/conveying section when duplex printing. Figure 2-1-25 Duplex/conveying section DU cover B DU holder Middle pulley B DU roller DU cover A Lower base cover Feed roller...

  • Page 181: Electrical Parts Layout

    2-2 Electrical Parts Layout 2-2-1 Electrical parts layout (1) PWBs Machine left Machine inside Machine right Figure 2-2-1 PWBs Control PWB ..........Main controller: Controls the software such as the print data processing and provides the interface with computers. Engine: Controls printer hardware such as high voltage/bias output con- trol, paper conveying system control, and fuser temperature control, etc.
  • Page 182 2H9-1 List of correspondences of PWB names Name used in service manual Name used in parts list Control PWB PARTS MAIN PWB ASSY FS SP Control PWB PARTS MAIN PWB ASSY FS SP EU Power source PWB PARTS SWITCHING REGULATOR 120V SP Power source PWB PARTS SWITCHING REGULATOR 230V SP High voltage PWB...

  • Page 183: Switches And Sensors

    (2) Switches and sensors Machine left Machine inside Machine right Figure 2-2-2 Switches and sensors Main power switch ........Turns ON/OFF the AC power source. Interlock switch ..........Shuts off 24 V DC power line when the front cover is opened. Cassette switch..........

  • Page 184: Other Electrical Components

    2H9-1 (3) Other electrical components Machine left Machine inside Machine right Figure 2-2-3 Other electrical components Main motor ............Drives the paper feed/conveying section and fuser unit. Polygon motor........... Drives the polygon mirror. ISU motor............Drives the ISU. Right cooling fan motor ........Cools the interior of machine. Left cooling fan motor ........

  • Page 185: Power Source Pwb

    2-3 Operation of the PWBs 2-3-1 Power source PWB +24V1 Scanner Power source PWB +24V1 Power source fan motor +24V1 Left cooling fan motor Zero cross Main power switch signal circuit +24V1 AC input Switching +24V2 regulator circuit Interlock switch SLEEP ZCROSS Fuser heater...
  • Page 186 2H9-1 Connector Signal Voltage Description YC101 NEUTRAL 120 V AC AC power input Connected 220 - 240 V AC to the AC LIVE 120 V AC AC power input inlet 220 - 240 V AC YC102 LIVE 120 V AC Fuser heater lamp output Connected 220 - 240 V AC...

  • Page 187: Control Pwb

    2-3-2 Control PWB Clutches Scanner PWB CCD PWB Solenoids Eraser lamp (PWB) APC PWB Engine control Commu- Image section nication control High voltage PWB section section Optional paper feeder Main control section Control PWB Operation panel Sensors motors Figure 2-3-3 Control PWB block diagram 2-3-3...
  • Page 188 2 31 YC28 YC29 YC11 YC19 Figure 2-3-4 Control PWB silk-screen diagram 2-3-4...
  • Page 189 Connector Signal Voltage Description +12V 12 V DC 12 V DC power source Connected Ground to the scan- HPSW 0/3.3 V DC Home position sensor: On/Off ner PWB Ground Not used LAMP 0/24 V DC Exposure lamp drive signal Ground Connected PANCTS 0/3.3 V DC (pulse) Transmitting enable signal...
  • Page 190 Connector Signal Voltage Description Ground Connected +3.3V1 3.3 V DC 3.3 V DC power source to the scan- CPUCLK 0/3.3 V DC (pulse) Serial communications clock signal ner PWB CPUSI 0/3.3 V DC (pulse) Serial communications data input CPUSO 0/3.3 V DC (pulse) Serial communications data output CPUSEL 0/3.3 V DC Communications select signal...
  • Page 191 Connector Signal Voltage Description YC20 +24V3 24 V DC 24 V DC power source Connected REGDRN 0/24 V DC Registration clutch: On/Off to the regis- +24V3 24 V DC 24 V DC power source tration FEDDRN 0/24 V DC Paper feed clutch: On/Off clutch, +24V3 24 V DC...
  • Page 192 Connector Signal Voltage Description YC28 ERASER 0/24 V DC Eraser lamp: On/Off Connected ERASRW 24 V DC 24 V DC power source to the eraser lamp YC29 DUDR1 0/24 V DC Duplex solenoid (activate): On/Off Connected COMMON 24 V DC 24 V DC power source to the DUDR2...

  • Page 193: Scanner Pwb

    2-3-3 Scanner PWB Image scanner Optional document DP timing DP original unit (ISU) processor (DP) Exposure lamp sensor sensor paper DP switchback DP switchback paper feed Home pressure open/close feedshift feed clutch position Inverter solenoid sensor solenoid motor sensor Driver motor Driver CCD PWB...
  • Page 194 YC104 YC108 YC106 YC103 YC105 YC107 Figure 2-3-6Scanner PWB silk-screen diagram Connector Signal Voltage Description YC101 +24V1 24 V DC 24 V DC power source Connected N.C. Not used to the power Ground source PWB YC102 SEGIR 0/3.3 V DC Serial communications interruption demand Connected SSDIR...
  • Page 195 Connector Signal Voltage Description YC105 +3.3V1 3.3 V DC 3.3 V DC power source Connected Ground to the TIMSWN 0/3.3 V DC DP timing sensor: On/Off optional DP ORGSWN 0/3.3 V DC DP original sensor: On/Off (DP driver OPSWN 0/3.3 V DC DP open/close sensor: On/Off PWB) DPDETN...
  • Page 196 This page is intentionally left blank. 2-3-12...

  • Page 197: Appendixes

    2-4 Appendixes 2-4-1 Appendixes (1) Wiring diagram 2-4-1...
  • Page 198 2H9-1 2-4-2...

  • Page 199: Repetitive Defects Gauge

    (2) Repetitive defects gauge First occurrence of defect [24.99 mm/1"] Upper registration roller [37.68 mm/1 "] Lower registration roller [45.216 mm/1 "] Transfer roller [62.8 mm/2 "] Developing roller (developing unit) [73.162 mm/2 "] Heat roller (fuser unit) [78.5 mm/3 "] Press roller (fuser unit) 1/16 [94 mm/3...

  • Page 200: Maintenance Parts List

    2H9-1 (3) Maintenance parts list Maintenance part name Alternative Fig. Part No. Ref. No. part No. Name used in service Name used in parts list Maintenance kit MK-132/MAINTENANCE KIT (OPTION) 1702H97US0 072H97US DK-150 DV-132(U) Maintenance kit MK-130/MAINTENANCE KIT (OPTION) 1702H98EU0 072H98EU DK-150 DV-130(E)

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