SP C840DN/SP C842DN

Read This First

Expand All
  • Read This First
    • Symbols, Abbreviations and Trademarks
      • Symbols, Abbreviations
      • Trademarks
  • Product Information
    • Product Overview
      • Component Layout
      • Paper Path
      • Drive Layout
    • Machine Codes and Peripherals Configuration
      • Main Machine
      • Options
    • Diagram
    • Specifications
  • Installation
    • Installation Requirements
      • Environment
      • Machine Level
      • Machine Space Requirements
      • Machine Dimensions
      • Power Requirements
        • Input voltage level
    • Who Installs the Peripherals and Options
    • Main Machine Installation
      • Installation Flow Chart
      • Accessory Check
      • Installation Procedure
        • Removal of Packing Materials and Shipping Retainers
        • Pulling out the Feeler of the Paper Exit Full Sensor
        • Checking the Position of the Paper Exit Feeler
        • Attaching the I/F Connection Cover
        • Attaching the Decals
        • Toner Bottle Installation and Toner Initialization
      • Image Quality Test / Settings
        • Before Test
        • Loading Paper
        • Paper Settings
        • Color Registration and Color Calibration
        • Checking the Print Image with the Test Print
        • HDD Security Function Settings
        • Settings Relevant to the Service Contract
      • Auto Remote Firmware Update (ARFU) Settings
        • Specifying the Time and Day of the Week to Prohibit Updating via Web Image Monitor
      • Moving the Machine
    • Security Settings
      • Configuring Administrator Authentication
      • Security Function Installation
      • Data Overwrite Security
        • Before You Begin the Procedure
        • Installation Procedure
        • Using Auto Erase Memory
      • HDD Encryption
        • Before You Begin the Procedure:
        • Installation Procedure:
        • Enable Encryption Setting
        • Check the Encryption Settings
        • Backing Up the Encryption Key
        • Encryption Key Restoration
    • Anti-Condensation Heater (PCDU)
      • Accessory Check
      • Installation procedure
    • Anti-Condensation Heater for Paper Feed Trays
      • Accessory Check
      • Connecting to Main Machine Tray
      • Connecting to Paper Feed Unit PB3240
      • Connecting to Paper Feed Unit PB3250
      • Connecting to LCIT PB3260
      • Connecting the Heaters when Using a Stack of Five Paper Trays
        • Overview
        • Installation Procedure
    • Paper Feed Unit Combinations
      • Connection Diagram
      • Connection Patterns
    • Paper Feed Unit PB3240 (M494-17, -21)
      • Accessory Check
      • Installation procedure
    • Installing a Stack of Five Paper Trays
      • Overview
      • Installation Procedure
    • Paper Feed Unit PB3250 (M495-17, -21)
      • Accessory Check
      • Installation Procedure
    • LCIT PB3260 (M496-17, -27, -21)
      • Accessory Check
      • Installation procedure
        • Changing the paper size
    • LCIT RT3030 (D696-17, -27, -21)
      • Accessory Check
      • Installation procedure
        • Changing the Paper Size
    • Banner Paper Guide Tray Type M19 (D3BF-00)
      • Component Check
      • Installation Procedure
    • Bridge Unit BU3070 (D685-18, -22)
      • Accessory Check
      • Installation procedure
    • Internal Multi-fold Unit FD3000 (M482-17, -21)
      • Accessory Check
      • Installation Procedure
      • When Attaching a Finisher Downstream from the Internal Multi-Fold Unit
    • Finisher SR3230 (D3BA-17, -21)
      • Accessory Check
      • Installation Procedure
      • Attaching a Support Tray
    • Output Jogger Unit Type M25 (D3CJ-01)
      • Accessory Check
      • Installation Procedure
    • Punch Unit PU3060 (D706-00, -01, 02, -03)
      • Accessory Check
      • Installation Procedure
    • Booklet Finisher SR3220 (D3B9-17, -21)
      • Accessory Check
      • Installation Procedure
      • Attaching a Proof Support Tray
    • Finisher SR3210 (D3B8-17, -21)
      • Accessory Check
      • Installation Procedure
      • Attaching a Proof Support Tray
      • Stapleless Stapler Initial Settings
        • How to change the setting of Staple Method for Stapleless Stapler
        • How to set Margin Erase for Stapleless Stapler
    • Punch Unit PU3050
      • Accessory Check
      • Installation Procedure
    • Mail Box CS3010 (M481-17)
      • Accessory Check
      • Installation Procedure
        • Removal of the Machine Exterior
        • Transferring the Operation Panel
        • Installation of the Mailbox
        • Installation of Stabilizers
    • Attention Light AL3000 (M500-36)
      • Component Check
      • Installation Procedure
      • Indicator Behavior
    • Imageable Area Extension Unit Type P11 (M500-49)
      • Component Check
      • Installation Procedure
        • When You Forgot to Change the SP
    • NFC Card Reader Type P11 (M512-18)
      • Accessory Check
      • Installation Procedure
    • External NFC Card Reader Bracket Type P11 (M512-17)
      • Accessory Check
      • Installation Procedure
        • Procedure for Connecting to the Operation Panel USB Slot
        • Procedure for Connecting to the Main Machine USB Slot
    • Internal Options
    • HDD Option Type P11 (M500-51)
      • Component Check
      • Installation Procedure
    • USB Device Server Option Type M19 (D3BC-28,-29)
      • Component Check
        • Interface Board Surface
      • Installation Procedure
        • What Do the LED Indications Mean?
      • IP Address Setting
    • Extended USB Board Type M19 (D3BS-01)
      • Component Check
      • Installation Procedure
    • IEEE 1284 Interface Board Type M19 (D3C0-17)
      • Accessory Check
      • Installation Procedure
    • IEEE 802.11a/g/n Interface Unit Type M19 (D3BR-01)
      • Accessory Check
      • Installation Procedure
        • Attaching the boards
        • Attaching the Antenna
      • User Tool Settings for IEEE 802.11a/g/n
      • SP Mode Settings for IEEE 802.11 Wireless LAN
    • SD Card Options
      • SD Card Slots
      • List of Slots Used
    • SD Card Appli Move
      • Overview
      • Move Exec
      • Undo Exec
    • VM Card Type P8 (M500-09, 10, 11)
      • Accessory Check
      • Installation Procedure
    • IPDS Unit Type P11 (M500-45, -46, -47)
      • Accessory Check
      • Installation Procedure
    • XPS Direct Print Option Type P11 (M500-42, -43, -44)
      • Accessory Check
      • Installation Procedure
    • Camera Direct Print Card Type M19 (D3BD-13)
      • Accessory Check
      • Installation Procedure
    • PostScript3 Unit Type P11 (M500-63, -64, -65)
      • Accessory Check
      • Overview of PostScript3 Unit Type P11 (Adobe PS)
      • Installation procedure (Adobe PS)
        • Initial Settings for the Printer Driver
        • Switching back to Clone PS from Adobe PS
    • @Remote Settings
  • Preventive Maintenance
    • PM Parts Settings
      • Replacement Procedure of the PM Parts
        • Method 1: By SP3701
        • Method 2: By [PM Counter / New Unit Set] Menu
      • After Installing the New PM Parts
        • SP descriptions
      • Preparation Before Operation Check
        • SP Descriptions
      • Operation Check
    • PM Parts List
  • Replacement and Adjustment
    • Notes on the Main Power Switch
      • Push Switch
        • Characteristics of the Push Switch (DC Switch)
        • Shutdown Method
        • Forced Shutdown
    • Beforehand
    • Special Tools
    • Exterior Covers
      • Overview
        • Front and Rear Side Covers
        • Left and Right Side Covers
        • Paper Exit Covers/Top Covers
        • Inner Covers
      • Quick Reference for Removing Covers
      • Front Cover
      • Front Upper Cover
      • Main Power Switch Cover
      • Waste Toner Cover
      • Controller Cover
      • Left Upper Cover
      • Left Rear Cover
      • Left Cover
      • Rear Left Cover
      • Rear Cover
      • Rear Lower Cover
      • Right Rear Cover
      • Right Upper Cover
      • Paper Exit Tray
      • Paper Exit Cover
      • Paper Exit Lower Cover
      • Paper Exit Front Cover
      • Top Right Cover
      • Top Rear Cover
      • Inner Upper Cover
      • Inner Lower Cover
    • Smart Operation Panel
      • Operation Panel Unit
      • Internal Parts
      • USB Cable
    • Laser Unit
      • Laser Unit
        • Before Replacement
        • Removing
        • Installing a New Laser Unit
        • What to Do after Replacing the Laser Unit
      • Polygon Mirror Motor
        • What to Do after Replacing the Polygon Mirror Motor
      • SP descriptions
    • PCDU
      • Notes when replacing a PCDU
        • For SP C840DN
        • For SP C842DN
        • Attaching the Spring after Mistakenly Releasing the Spring Pressure
      • PCDU
        • Replacement
        • What to Do after Replacing the PCDU
      • Imaging Temperature Sensor (Thermistor)
    • Waste Toner
      • Waste Toner Bottle
        • Before Replacing the Waste Toner Bottle
        • Replacement Procedure
    • Image Transfer Unit
      • Image Transfer Belt Unit
        • What to Do before Replacing the Image Transfer Belt
        • Replacement
      • Image Transfer Front Cover, Image Transfer Top Cover
      • Image Transfer Cleaning Unit
        • What to Do before Replacing the Image Transfer Cleaning Unit
        • Replacement
      • Image Transfer Belt
        • Attaching the Belt
        • What to do After Replacing the Image Transfer Belt
      • Paper Transfer Roller
        • When reinstalling the paper transfer roller
      • Paper Transfer Roller Unit
        • What to Do before Replacing the Paper Transfer Roller Unit
        • Replacement
      • Fusing Entrance Sensor
      • TM/ID Sensor
        • Before Replacing the TM/ID sensor
        • Replacement procedure
        • Adjustment after replacing the TM/ID sensor
      • Temperature and Humidity Sensor
      • ITB Contact and Release Sensor
      • Image Transfer Lock Unit
        • Installing the Image Transfer Lock Unit
    • Drive Unit
      • Overview
      • Paper Feed Motor
      • Transport Motor
      • Paper Transfer Contact and Release Motor Unit
      • Imaging Drive Unit
      • PCU Motor: CMY
      • Development Motor: CMY
      • Development Motor: Black
      • PCU: Black / ITB Drive Motor
      • Registration Motor
      • Fusing Motor
      • Paper Exit / Pressure Release Motor
      • Duplex Entrance Motor
      • Toner Supply Motor
      • Sub Hopper
        • K
        • C
        • M
        • Y
      • Toner End Sensor
      • Toner Duct
      • Toner Bottle Drive Motor
        • K
        • C
        • M
        • Y
      • ID Chip Contact Board
        • K
        • C
        • M
        • Y
      • Transport Coil
        • Y
        • M
        • C
        • K
    • Fusing Unit
      • Fusing Unit
      • Fusing Entrance Guide Plate
        • Cleaning the Fusing Entrance Guide Plate
      • Fusing Exit Guide Plate
        • Cleaning the Fusing Exit Guide Plate
      • Fusing Upper Cover
      • Fusing Lower Cover
      • Fusing Sleeve Belt Unit
        • What to Do before Replacing the Fusing Sleeve Belt Unit
        • Replacement
      • Pressure Roller
        • What to Do before replacing the pressure roller
        • Replacement
      • Fusing Sleeve Thermostat Unit
      • Non-Contact Thermistor
      • Pressure Roller Thermistor
      • Thermopile Unit
      • Pressure Roller HP Sensor
      • Fusing Shield Position Sensor
      • Fusing Shield Drive Motor
      • Fusing Exit Drive Solenoid
    • Paper Exit
      • Paper Exit Unit
        • Re-installing the Paper Exit Unit
      • Paper Exit Switching Solenoid
      • Paper Exit Sensor
      • Reverse Sensor
      • Paper Exit Full Sensor
      • Reverse Motor
      • Fusing Exit Sensor
      • Inverter Guide
      • Inverter Guide Cover Sensor
    • Paper Feed
      • Paper Feed Unit
        • 1st Paper Feed Unit
        • 2nd Paper Feed Unit
      • Paper Dust Collection Unit
      • Pick-up Roller, Paper Feed Roller, Separation Roller, Torque Limiter
      • 1st Tray Lift Motor, 2nd Tray Lift Motor
      • Paper Feed Sensor
      • Transport Sensor
      • Upper Limit Sensor
      • Paper End Sensor
      • Registration Sensor
    • Bypass Tray Unit
      • Bypass Tray
      • Bypass Paper End Sensor
      • Bypass Pick-up Roller
      • Bypass Paper Feed Roller
      • Bypass Separation Roller/Torque Limiter
      • Bypass Width Sensor
      • Bypass Length Sensor
    • Duplex Unit
      • Duplex Unit
      • Duplex/Bypass Motor
      • Duplex Entrance Sensor
      • Duplex Exit Sensor
    • Electrical Components
      • Overview
        • Printed Circuits/Parts inside the Controller Box
        • Printed Circuits behind the Controller Box
        • Printed Circuit/Parts inside the Power Box
        • Printed Circuits behind the Power Box
      • Controller Box Cover
      • Controller Bracket
      • Opening the Controller Box
      • IPU
      • BCU
        • When installing the new BCU
        • Replacing the NVRAM (EEPROM) on the BCU
      • Controller Board
        • Replacing the NVRAMs on the Controller Board
      • HDD
        • What to do After Replacing the HDD
      • Imaging IOB
      • HVP
      • PSU (AC Controller Board)
      • PSU (DC Power)
      • Paper Transport IOB
      • HVP-CB
        • HVP-CB with Bracket
    • Fans/Filters
      • Ozone filter/Dust filter
        • What to do Before Replacing the Dust Filter
        • Replacement
      • Deodorization Filter
      • Development Intake Fan
      • Ozone Exhaust Fan
      • Paper Exit Cooling Fan
      • Fusing Exhaust Fan
      • Drive Cooling Fan
      • Toner Supply Cooling Fan
      • Main Exhaust Fan
      • PSU Cooling Fan
      • Controller Box Cooling Fan
    • Test Pattern Printing
    • Image Adjustment
      • Color Calibration
      • Registration
      • Erase Margin Adjustment
      • Adjusting the Tone of the Printed Image
      • Adjustment by Changing the Printer Driver Setting
        • Opening the Printer Driver's "Color Balance Details" Window
        • Color Balance Details Window
        • Adjusting the Tone in the "Color Balance Details" Window
        • Adjustment Examples
      • Adjustment by Changing the Machine's Profile Setting
        • Procedure to Change the Profile Setting
        • Patterns and Tendency of the Tone for Each Profile
      • Printer Gamma Correction
      • Color Registration
        • Check the occurrence of color registration errors
        • Judgment for type of color registration error
  • System Maintenance
    • Service Program Mode
      • Entering SP Mode
      • Exiting SP Mode
      • Types of SP Modes
        • SP Mode Button Summary
        • Selecting the Program Number
        • Service Mode Lock/Unlock
      • Remarks
        • Others
    • SP Tables
    • Firmware Update (SD Card)
      • Overview
      • Firmware Type
      • Procedure
        • Preparing the SD Card
        • Update Procedure
      • Error Screens During Updating
    • Firmware Update (Remote Firmware Update)
      • RFU Performable Condition
    • Firmware Update (Smart Firmware Update)
      • Overview
      • Immediate Update
      • Update at the Next Visit (Reserve)
        • How to Set the Machine to Download Firmware Later (Reserve)
        • How to Check if the Firmware Downloaded with Reserve
        • How to Install Firmware Downloaded with Reserve
      • Update via SD Card
    • Firmware Update (Auto Remote Firmware Update)
      • Overview
      • Downloading and Updating Process
        • Downloads the Latest Package
        • Judgement of ARFU
        • Update Process
      • Checking the ARFU Result
      • Checking the Result Using the Logging Data
      • Related SP
    • Updating JavaVM
      • Overview
      • Deactivating SDK Applications and Removing the VM Card
        • Operation from Operation Panel
        • Operation from Web Image Monitor
      • Updating JavaVM and Inserting the VM Card
      • Activating SDK Applications
    • NVRAM Data Upload/Download
      • Uploading Content of NVRAM to an SD card
      • Downloading an SD Card to NVRAM
    • Address Book Upload/Download
      • Information List
      • Download
      • Upload
    • Capturing the Device Logs
      • Overview
        • Security of the Operation Log
      • Storing the Device Logs on an SD card (SP C840DN without option HDD only)
      • Retrieving the Device Logs via Operation Panel
        • Procedure for Retrieving the Device Log with SD Card
      • Retrieving the Device Logs via Web Image Monitor
    • SMC List Card Save Function
      • Overview
      • Procedure
      • Notes on Using the SMC List Card Save Function
      • File Names of the Saved SMC Lists
      • Error Messages
    • UP/SP Data Import/Export
      • Outline
      • UP Data Import/Export
        • Data that Can Be Imported and Exported
        • Data that Cannot Be Imported or Exported
        • Exporting Device Information
        • Importing Device Information
      • SP Data Import/Export
        • Data that can be imported and exported
        • Exporting Device Information
        • Importing Device Information
      • Possible solutions for import/export problems
    • Card Save Function
      • Overview
        • Card Save
      • Procedure
      • Error Messages
  • Troubleshooting
    • Self-Diagnostic Mode
      • SC Automatic Reboot
      • Controller Self-diagnosis Outline
      • Controller Self-diagnosis Flowchart
      • HDD-related Message
    • Service Call Conditions
      • Summary
        • SC Logging
      • List of Automatic Reboot Target SC
        • Engine SC
        • Controller SC
      • SC Code Classification
    • Service Call 195
      • SC100 (Engine: Serial Number)
    • Service Call 202-285
      • SC200 (Engine: Image Writing)
    • Service Call 312-396
      • SC300 (Engine: Charge, Development)
    • Service Call 441-498
      • SC400 (Engine: Around the Drum)
    • Service Call 501-584
      • SC500 (Engine: Paper transport 1: Paper Feed, Duplex, Transport)
      • SC500 (Engine: Fusing)
        • Fusing Sleeve (Center) Error (SC54*-**)
        • Fusing Sleeve (Edge) Error (SC55*-**)
        • Pressure Roller Thermistor (Center) Error (SC56*-**)
        • Pressure Roller Thermistor (Edge) Error (SC57*-**)
        • Pressure Roller Thermistor (Full-Bleed Edge) Error (SC58*-**)
    • Service Call 620-689
      • SC600 (Engine: Communication and Others)
      • SC600 (Controller)
    • Service Call 700-792
      • SC700 (Engine: Peripherals)
    • Service Call 816-899
      • SC800 (Controller)
    • Service Call 900-998
      • SC900 (Engine: Others)
      • SC900 (Controller)
    • Troubleshooting for SC Errors
      • When SC285-02 (MUSIC Error) is Displayed
        • Cause
        • Solution
      • When SC370 (TM (ID) Sensor Calibration Error) is Displayed
        • Cause
        • Solution
        • Recovery Check Procedure
        • Adjustment after Recovery
      • When SC501, SC502, SC503, or SC504 (Paper Tray Error) is Displayed
        • Solution
      • When SC544-02, SC554-02 (Non-contact Thermistor High Temperature Detection) Is Displayed
        • How to Clear SC544-02/SC554-02 with a New Unit Detection Fuse
      • When SC549 (Shield Operation Error Detection) is Displayed
        • Troubleshooting Flowchart
        • Fusing Shield Check
      • Isolation Diagram of SC663, 664, 665, 667, 668, and 670-01
      • When SC670 (Engine start up error) is Displayed
        • Cause
        • Solution
      • When SC672 (Controller start up error) is Displayed
        • Symptom
        • Cause
        • Solution
        • [A]: LEDs on the controller board
        • [B]: Abnormal mode: LEDs on the controller board
        • [C]: Reconnecting and replacing the USB cable
        • [D]: Replacing the Memory
        • [E]: CMOS clear
        • [F]: Fuse on the IPU
        • [G]: Replacing the USB cable and the operation panel
    • Jam Detection
      • Jam Display
      • Clearing a Paper Jam
      • Paper Jam History
        • How to Check a Paper Jam
        • Paper Jam Display
      • Jam Codes and Display Codes
      • Paper Size Code
      • Sensor Locations
    • Troubleshooting for Transport/Paper Feeding of the Machine
      • Curled Paper
      • Initial Jam
        • Initial Jam: Cause Code 001 / Location Code A
        • Initial Jam: Cause Code 001 / Location Code B
        • Initial Jam: Cause Code 001 / Location Code C
        • Initial Jam: Cause Code 001 / Location Code Z
      • Jam
        • Tray 1 No Feeding: Late Jam: Cause Code 003
        • Tray 2 No Feeding: Late Jam: Cause Code 004
        • Bypass No Feeding: Cause Code 008
        • Tray 1 Transport Sensor: Late Jam: Cause Code 011
        • Tray 2 Transport Sensor: Late Jam: Cause Code 012
        • Registration Sensor: Late Jam: Cause Code 017
        • Fusing Entrance Sensor: Late Jam: Cause Code 018
        • Fusing Exit Sensor: Late Jam: Cause Code 019
        • Paper Exit Sensor: Late Jam: Cause Code 020
        • Tray 1 Transport Sensor: Lag Jam: Cause Code 051
        • Tray 2 Transport Sensor: Lag Jam: Cause Code 052
        • Registration Sensor: Lag Jam: Cause Code 057
        • Paper Exit Sensor: Lag Jam: Cause Code 060
        • Reverse Sensor: Late Jam: Cause Code 024
        • Reverse Sensor: Lag Jam : Cause Code 064
        • Duplex Exit Sensor: Late Jam: Cause Code 025
        • Duplex Exit Sensor: Lag Jam: Cause Code 065
        • Duplex Entrance Sensor: Late Jam: Cause Code 027
        • Duplex Entrance Sensor: Lag Jam: Cause Code 067
        • Duplex Not Feeding: Cause Code 009
        • Bypass Transport Sensor 1: Lag Jam: Cause Code 048
      • Display Error
        • "No paper in Tray 1" is displayed even when there is paper
        • "No paper in Tray 2" is displayed even when there is paper
        • "Tray 1 not set" is displayed even when the tray is set
        • "Tray 2 not set" is displayed even when the tray is set
        • Wrong paper size displayed on the operation panel
        • Does not shift to right door open status
        • Cannot detect paper exit full
        • Cannot print as paper exit full alert cannot be turned off
      • Others
        • "Replace the waste toner bottle" is displayed even when it is clear that the waste toner bottle is not full
        • Waste toner bottle is never full
        • No waste toner bottle set is displayed on controller board even when it is clear that is set
        • Waste toner bottle is not detected even when it is set
        • Paper Transfer Unit Open/Closed LED not lit & Paper Transfer Unit Open
        • Paper Transfer Unit Open/Closed LED not lit
        • Paper Transfer Unit Open/Closed LED always lit
    • Troubleshooting for Finishing Options
      • Finisher Registration Adjustment
        • For Finisher SR3230
        • For Booklet Finisher SR3220 or Finisher SR3210
      • Finisher Jogger Problem for Booklet Finisher SR3220 or Finisher SR3210
      • Maximum number of sheets for stapling and what happens when the job has too many pages
        • Specifications: Maximum Sheet Capability for Staple Jobs
        • Behavior: When the number of sheets exceeds the maximum staple capability
        • Select the behavior when the job has more than the maximum of staple capability with SP5199
    • Electrical Component Defects
      • Fuses
    • Image Quality Problems
      • When an Abnormal Image is Generated
    • Other Troubleshooting
      • When Abnormal Noise Occurs
        • Checking Abnormal Noise from the Fusing Unit
        • Operation Check Procedure for the Toner Supply Motor and Toner Bottle Drive Motor
      • When Fluorescent/LED Lamps Flicker
  • Detailed Descriptions
    • Guidance for Those Who are Familiar with Predecessor Products
    • Component Layout
      • Laser Exposure Unit
      • Image Transfer Unit
      • PCDU
      • Toner Supply, Waste Toner Bottle
      • Paper Feed Unit
      • Duplex Unit
      • Bypass Unit
      • Fusing Unit
      • Paper Transfer, Paper Exit
      • Air Flow
      • Drive Unit
      • Boards, Switches
    • Laser Exposure
      • Overview
        • Parts Construction
      • Mechanism
        • LD Drive Board
        • LD Safety Switch
        • Circuit Diagram
        • Line Scanning Mechanism
    • Process Control
      • Mechanism
        • Sensor Construction
        • Outline of the ID Sensors
        • Outline of the TD sensor
      • Process Control
        • Outline
        • Result Code for Executing Process Control
        • Process Control Procedure
        • Electrified Potential / Development Bias, Vref Correction
        • LD Power Control
        • Toner Supply Control
        • Developer Initialization
      • MUSIC (Automatic Color Registration Correction)
        • Correction Timing
        • Executing MUSIC Manually
        • Contact MUSIC (SP2-111-004)
        • MUSIC Error Judgment
      • Real Time Process Control
      • IBACC
        • Outline
        • Operation Timing
        • Patch Pattern
      • SP Descriptions
    • PCDU (Photo Conductor and Development Unit)
      • Overview
      • Mechanism (PCU)
        • Drum Drive
        • Charge
        • Drum Cleaning
      • Mechanism (Development)
        • Development System
        • Agitation System
        • TD (Mu) Sensor
        • Pressure Release Filter
        • Development Drive
        • Development Bias
    • Toner Supply
      • Overview
      • Mechanism
        • Toner supply (Toner Bottle - Sub-hopper)
        • Toner bottle ID chip
        • Toner supply (Sub-hopper - Development Unit)
        • Drive
        • Toner Near End/End Detection
        • SP Descriptions
    • Waste Toner
      • Overview
      • Mechanism
        • Waste Toner Bottle Set Detection
        • Waste Toner Drive
        • Waste Toner Recovery Path (PCU/Image Transfer Unit)
        • Waste Toner Bottle Full Detection
    • Image Transfer and Paper Transfer
      • Overview
        • Image Transfer Unit
        • Paper Transfer Unit
      • Image Transfer Unit Mechanism
        • Drive Mechanism
        • Transfer Bias
        • ITB Contact and Release
        • Image Transfer Belt Drive Control
        • Image Transfer Sequence
        • Unit Configuration: Changes from Met-C2
      • Image Transfer Belt Cleaning Mechanism
      • Paper Transfer Unit Mechanism
        • Paper Transfer Mechanism
        • PTR (Paper Transfer Roller) Drive
        • PTR (Paper Transfer Roller) Contact and Separation
        • Separation
        • TM/ID Sensor
    • Paper Feed / Transport
      • Overview
      • Feed /Transport Mechanisms
        • Tray Base Plate Lift
        • Paper Feed Mechanism
        • Paper Feed Transport Mechanism
        • Paper Size Detection (1st Paper Feed Tray)
        • Paper Size Detection (2nd Paper Feed Tray)
        • Remaining Paper Detection
        • Paper End Detection
        • Paper Feed Drive
        • Paper Dust Removal Mechanism
        • Tray Draw-in Mechanism
      • Bypass Feed Section
        • Bypass Feed Paper/Separation Mechanism
        • Bypass Feed Paper Size Detection
        • Bypass Feed Paper End Detection
        • Bypass Paper Feeder Drive
      • Duplex Section
        • Transport Inversion Mechanism
        • Duplex Drive
        • Interleave Mechanism
      • Paper Exit Unit
        • Delivery Location Change-over
        • Paper Exit Full Detection/Paper Exit Jam Detection
      • Drive/Sensor Layout
        • Transport Roller Drive Source
        • Gate/Pickup Arm Drive Source
        • Transport Paths Between Rollers
        • Sensor Position
        • Paper Exit Driven Roller and Paper Support Guide
        • Removing Wrinkling in the Tray
    • Fusing
      • Overview
      • Parts Layout
      • Mechanism
        • Fusing System
        • Temperature Control
        • Fusing Drive
        • Pressure Release Mechanism
        • Fusing Temperature Control
        • PPM Down Control
        • Curl Correction Mechanism
        • Fusing Unit Lock System
        • lncompatibility
    • Electrical parts
      • Block Diagram
      • Board Outline
        • Controller
        • LDB
        • BCU
        • IPU
        • IOB
        • OPU
        • HVP (composite high-voltage power supply TTS/CB)
        • PSU
      • Feed Tray Anti-condensation Heater and PCDU Anti-condensation Heater
        • Circuit Configuration
    • Exterior Cover/Air Flows (Fan Control)
      • Air Flows
      • Mechanism
        • Cooling of Toner Supply Parts
        • Cooling of PCDU Parts
        • Cooling of Fusing Parts
        • Cooling of Actuator
        • Cooling in Controller Box
        • Machine Control when Temperature Rises inside the Machine
        • Helmholtz Silencer
    • Energy Save
      • Energy Saver Modes
        • Setting Items that are Related to Energy Saving
        • Recovery Time/Reduced Electrical Consumption
      • Power States of this Machine
      • Verification of Up Time for each Energy Saving State
      • Checking the Up time by Device State
      • Recommendation
    • 10 Second Recovery from Sleep Mode
      • Improving the Print Start Time under Low Temperature, Low Humidity, or at Low Voltage
      • Improving the Throughput at the Start of Printing, under Low Temperature, or at Low Voltage
    • Adobe PS vs. Clone PS
      • Overview
      • How to Distinguish Adobe PS from Clone PS
      • Difference in Device Fonts
        • Font Change Confirmation Screen
        • List of fonts and their replacements (Adobe PS -> Clone PS)
      • Differences in Driver Functions