This service manual covers the Canon imageRUNNER series, specifically models iR2270, iR2870, iR3570, and iR4570. These copiers are engineered for reliable performance and efficient document handling in professional environments. The manual details various systems, including the main controller, original exposure, laser exposure, image formation, pickup and feeding, fixing, and power supply systems, providing in-depth information on their components and operation.
The purpose of this manual is to provide comprehensive guidance for the diagnosis, maintenance, and repair of the Canon imageRUNNER copiers. It includes detailed procedures for installation, periodic replacement of parts, scheduled servicing, and cleaning. Furthermore, the manual offers extensive troubleshooting information, covering faulty images, self-diagnosis error codes, and jam codes, along with instructions for using service modes and required tools. This resource is essential for ensuring the optimal performance and longevity of your Canon imageRUNNER equipment.
This service manual provides comprehensive instructions for diagnosing and repairing Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers. It includes detailed diagrams, pictures, and step-by-step procedures for a wide range of tasks, including:
**Understanding the Copier:**
* **System Overview:** A thorough explanation of the copier's components, including delivery accessories, original handling, heaters, and printing/transmitting accessories.
* **Product Specifications:** Detailed information about the copier's features, parts, power operation, control panel, user settings, maintenance procedures, safety information, and a complete list of functions.
**Installation:**
* **Preparation:** Guidance on selecting the right installation site and conducting pre-installation checks.
* **Setting Up the Copier:** Step-by-step instructions for unpacking, installing toner, installing the drum unit, securing the copier, connecting cables, stirring toner, setting cassettes, adjusting the image position, and attaching other parts.
* **Network Connectivity:** Troubleshooting guides for network connections, including installing optional accessories like card readers and network controllers.
**Basic Operation:**
* **Internal Construction:** An explanation of the copier's internal layout and major PCB wiring diagrams.
* **Power On Sequence:** A detailed description of the power-on sequence.
**Main Controller:**
* **Key Components:** A detailed look at the main controller, including its construction, HDD, and PCB details.
* **Power Processes:** Descriptions of the start-up and shut-down sequences.
* **Image Processing:** A comprehensive guide to the image processing flow, including input and output processing, compression/expansion/editing techniques, and the flow of image data across various functions like copying, sending, and fax transmission.
* **Replacing Components:** Detailed instructions for replacing the main controller PCB, SDRAM, Boot ROM, and HDD.
**Original Exposure System:**
* **Components and Controls:** An in-depth explanation of the original exposure system, including its specifications, controls, functions, and major components like the Reader Controller PCB.
* **Operating Sequences:** Descriptions of the operating sequences during power-on, for book mode (1 original), and for ADF mode (1 original).
* **Control Systems:** Explanations of the control systems for the scanner drive, contact image sensor (CIS), enlargement/reduction, original size detection, dirt sensor control, and image processing.
* **Replacing Components:** Detailed instructions for replacing components like the copyboard glass, Reader Controller PCB, scanner motor, contact sensor, copyboard cover sensors, original size sensor, and reader heater.
**Laser Exposure:**
* **Construction and Operation:** A breakdown of the laser exposure system, including its specifications, controls, functions, and major components.
* **Operating Sequence:** A detailed description of the operating sequence.
* **Control Systems:** Explanations of the control systems for laser activation timing, laser light intensity, laser scanner motor, and laser shutter.
* **Replacing Components:** Step-by-step instructions for replacing the laser scanner unit.
**Image Formation:**
* **System Overview:** A detailed explanation of the image formation system, including its specifications and major components.
* **Image Formation Process:** A step-by-step explanation of the image formation process.
* **Operating Sequences:** Detailed descriptions of the operating sequences during initial and final rotation and copying.
* **Image Stabilization:** Explanations of APVC and ATVC for image stabilization.
* **Individual Component Details:** Thorough discussions of the drum unit, drum cleaner, developing unit, toner container, transfer unit, transfer mechanism, and photo sensitive drum cleaning, including their control systems.
* **Replacing Components:** Detailed instructions for replacing components like the pre-exposure lamp, drum unit, hopper assembly, sub-hopper, developing assembly, developing cylinder, transfer charging roller, waste toner box, and toner level sensor.
**Pickup/Feeding System:**
* **Paper Handling:** An in-depth explanation of the pickup/feeding system, including its specifications, controls, functions, arrangement of rollers and sensors, and diagrams of the paper paths.
* **Operating Sequences:** Descriptions of the basic sequence of paper pickup and feeding, including how the copier detects jams and other issues.
* **Individual Component Details:** Explanations of the cassette pick-up unit, manual feed pickup unit, registration unit, and duplex feeding unit.
* **Replacing Components:** Detailed instructions for removing and replacing a comprehensive list of components in the pickup/feeding system, including pickup units, rollers, sensors, motors, solenoids, and more.
**Fixing System:**
* **System Overview:** A detailed explanation of the fixing system, including its specifications, control mechanisms, functions, and major components.
* **Operating Sequences:** Descriptions of the operating sequences during power-on and down.
* **Control Systems:** Explanations of the control mechanisms for fixing film speed, temperature, cleaning, and the detection of paper passage.
* **Protective Functions:** Descriptions of the protective functions of the fixing system.
* **Replacing Components:** Step-by-step instructions for replacing components like the fixing unit, pressure roller, cleaning roller, fixing film, internal delivery sensor, and fixing film sensor.
**External Controls and Power Systems:**
* **Control Panel:** An explanation of the control panel, including its overview, LCD indication processing, adjustments, and the functions of the control panel CPU.
* **Counters:** Descriptions of the various counters used in the copier, including their overview and timing for increasing the count.
* **Fans:** Explanations of the fans in the copier, including their overview, speed control, and sequence of operation.
* **Power Supply:** Detailed information about the power supply system, including the power supply itself, its rated output, protective functions, and the backup battery system.
* **Energy Saving:** Descriptions of the copier's energy-saving features and how the machine operates with different power settings.
* **Replacing Components:** Instructions for replacing components like the main drive assembly, exhaust fan, main drive motor, fixing driver motor, right door, and circuit breaker.
**MEAP (Multifunctional Embedded Application Platform):**
* **Platform Overview:** A general overview of MEAP.
* **Counter:** Explanations of the MEAP counter.
* **Platform Construction:** Discussions of the construction of the MEAP platform.
**Maintenance and Inspection:**
* **Periodically Replaced Parts:** Lists of parts that need to be replaced periodically, both in the reader and printer units.
* **Durables and Consumables:** Lists of durables and consumables, again for both the reader and the printer units.
* **Scheduled Servicing:** Basic procedures for scheduled servicing, including for the reader and printer units.
* **Cleaning Procedures:** Detailed cleaning procedures, including cleaning the transfer/feed guide, developing assembly spacer, dust-blocking glass, fixing inlet guide, and film bias static eliminator.
**Standards and Adjustments:**
* **Image Adjustments:** Standards and procedures for adjusting image position.
* **Scanning System Adjustments:** Adjustments for the scanning system following replacement of the CIS or reader controller PCB.
* **Laser Exposure System Adjustments:** Adjustments after replacing the laser scanner unit.
* **Image Formation System Adjustments:** Explanations of adjustments after replacing the developing or drum unit.
* **Electrical Component Adjustments:** Instructions for adjustments after replacing the HDD, DC controller PCB, main controller PCB, or reader controller PCB.
* **Pickup/Feeding System Adjustments:** Details of adjustments for the pickup/feeding system, including adjusting horizontal registration and paper width.
**Troubleshooting Faulty Images:**
* **Initial Checks:** A checklist of items to inspect when troubleshooting faulty images.
* **Troubleshooting Guide:** A guide to troubleshooting common image faults and malfunctions.
* **Electrical Component Overview:** An overview of electrical components, including clutches, solenoids, motors, fans, sensors, switches, lamps, heaters, PCBs, variable resistors, light-emitting diodes, and check pins.
**Self Diagnosis:**
* **Error Code Table:** A table of error codes.
* **Error Code Details:** Detailed information about specific error codes.
* **SEND Function Error Codes:** Explanations of error codes related to the SEND function.
* **Jam Codes:** Details of jam codes for different areas of the copier (printer unit, finisher, ADF).
* **Alarm Codes:** A listing of alarm codes.
* **Finisher/Saddle Finisher Error Codes:** Explanations of error codes related to the finisher and saddle finisher.
* **DADF Error Codes:** Information about error codes related to the DADF (Duplex Automatic Document Feeder).
**Service Mode:**
* **Service Mode Overview:** Descriptions of the construction of service mode and how to enter and exit it.
* **Status Display Mode:** Explanations of the DISPLAY mode and its lists for copier, feeder, and other components.
* **I/O Display Mode:** Details of the I/O mode and its uses.
* **Adjustment Mode:** Covers the ADJUST mode and its lists for copier, feeder, and sorter.
* **Operation/Inspection Mode:** Explanations of the FUNCTION mode and its lists for copier and feeder.
* **Machine Settings Mode:** Descriptions of the OPTION mode and its lists for copier, feeder, sorter, and boards.
* **Test Print Mode:** Explanations of the TEST mode and its lists for copier.
* **Counter Mode:** Covers the COUNTER mode and its lists for copier.
**Service Tools:**
* **Special Tools:** Lists of special tools required for servicing the copier.
* **Oils and Solvents:** Lists of recommended oils and solvents for maintenance.
This service manual is an invaluable resource for technicians who need to diagnose and repair Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers. Its detailed instructions, diagrams, and pictures make it easy to understand and apply the information to real-world repair situations.This comprehensive service manual is your guide to diagnosing and repairing Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers. It includes detailed diagrams and step-by-step instructions for a wide range of procedures, covering everything from basic operation to complex component replacement.
**Key Features:**
* **Detailed System Overview:** Understand the copier's inner workings with clear explanations of its components, including delivery accessories, original handling systems, heaters, printing and transmitting accessories, and more.
* **Complete Product Specifications:** Find all the information you need about the copier's features, parts, power operation, control panel, user settings, maintenance procedures, safety guidelines, and a detailed list of functions.
* **Step-by-Step Installation Guide:** Learn how to set up the copier correctly with detailed instructions for unpacking, installing toner and the drum unit, securing the copier, connecting cables, stirring toner, setting cassettes, adjusting image position, and attaching other parts.
* **Troubleshooting Network Connectivity:** Get help with network connections and learn how to install optional accessories like card readers and network controllers.
* **Basic Operation Made Easy:** Explore the copier's internal layout, understand major PCB wiring diagrams, and follow the power-on sequence.
* **Main Controller Explained:** Get a detailed look at the main controller, its construction, HDD, PCB details, start-up and shut-down sequences, and the image processing flow. Learn how to replace key components like the main controller PCB, SDRAM, Boot ROM, and HDD.
* **Mastering the Original Exposure System:** Dive into the workings of the original exposure system, including its specifications, controls, functions, major components (like the Reader Controller PCB), operating sequences, control systems for the scanner drive, contact image sensor (CIS), enlargement/reduction, original size detection, dirt sensor control, and image processing, and detailed instructions for replacing components like the copyboard glass, Reader Controller PCB, scanner motor, contact sensor, copyboard cover sensors, original size sensor, and reader heater.
* **Understanding the Laser Exposure System:** Explore the laser exposure system's specifications, controls, functions, major components, operating sequence, control systems for laser activation timing, laser light intensity, laser scanner motor, and laser shutter, and learn how to replace the laser scanner unit.
* **Image Formation Demystified:** Discover the image formation system's specifications, major components, step-by-step image formation process, APVC and ATVC for image stabilization, details on the drum unit, drum cleaner, developing unit, toner container, transfer unit, transfer mechanism, and photo sensitive drum cleaning, and detailed instructions for replacing components like the pre-exposure lamp, drum unit, hopper assembly, sub-hopper, developing assembly, developing cylinder, transfer charging roller, waste toner box, and toner level sensor.
* **Paper Handling Made Simple:** Learn about the pickup/feeding system, its specifications, controls, functions, arrangement of rollers and sensors, diagrams of paper paths, operating sequences, how the copier detects jams, and detailed explanations of the cassette pick-up unit, manual feed pickup unit, registration unit, and duplex feeding unit. Get step-by-step instructions for replacing a wide range of components in the pickup/feeding system, including pickup units, rollers, sensors, motors, solenoids, and more.
* **Fixing System Demystified:** Understand the fixing system's specifications, control mechanisms, functions, major components, operating sequences, control systems for fixing film speed, temperature, cleaning, and the detection of paper passage, protective functions, and detailed instructions for replacing components like the fixing unit, pressure roller, cleaning roller, fixing film, internal delivery sensor, and fixing film sensor.
* **External Controls and Power Systems Explained:** Explore the control panel, its overview, LCD indication processing, adjustments, and the functions of the control panel CPU. Learn about the various counters used in the copier, including their overview and timing for increasing the count. Discover the fans in the copier, including their overview, speed control, and sequence of operation. Get detailed information about the power supply system, including the power supply itself, its rated output, protective functions, and the backup battery system. Learn about the copier's energy-saving features and how the machine operates with different power settings. Find instructions for replacing components like the main drive assembly, exhaust fan, main drive motor, fixing driver motor, right door, and circuit breaker.
* **MEAP (Multifunctional Embedded Application Platform):** Gain a general overview of MEAP, understand the MEAP counter, and explore the construction of the platform.
* **Maintenance and Inspection Guide:** Learn about periodically replaced parts, durables and consumables, scheduled servicing procedures, and detailed cleaning procedures.
* **Standards and Adjustments:** Get guidance on adjusting image position, adjusting the scanning system after component replacement, adjusting the laser exposure system after component replacement, adjusting the image formation system after component replacement, adjusting electrical components after replacement, and adjusting the pickup/feeding system.
* **Troubleshooting Faulty Images:** Learn how to make initial checks, troubleshoot common image faults and malfunctions, and understand electrical component details.
* **Self Diagnosis Made Easy:** Use the error code table and detailed information about specific error codes. Understand error codes related to the SEND function, jam codes for different areas of the copier, alarm codes, finisher/saddle finisher error codes, and DADF error codes.
* **Navigating Service Mode:** Learn the construction of service mode, how to enter and exit it, and understand the DISPLAY, I/O, ADJUST, FUNCTION, OPTION, TEST, and COUNTER modes.
* **Essential Service Tools:** Find lists of special tools and recommended oils and solvents for maintenance.
This service manual is designed to be your comprehensive guide for diagnosing and repairing Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers.
This service manual provides comprehensive instructions for diagnosing and repairing Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers. It includes detailed diagrams, pictures, and step-by-step procedures for a wide range of tasks, including:
**Understanding the Copier:**
* **System Overview:** A thorough explanation of the copier's components, including delivery accessories, original handling, heaters, and printing/transmitting accessories.
* **Product Specifications:** Detailed information about the copier's features, parts, power operation, control panel, user settings, maintenance procedures, safety information, and a complete list of functions.
**Installation:**
* **Preparation:** Guidance on selecting the right installation site and conducting pre-installation checks.
* **Setting Up the Copier:** Step-by-step instructions for unpacking, installing toner, installing the drum unit, securing the copier, connecting cables, stirring toner, setting cassettes, adjusting the image position, and attaching other parts.
* **Network Connectivity:** Troubleshooting guides for network connections, including installing optional accessories like card readers and network controllers.
**Basic Operation:**
* **Internal Construction:** An explanation of the copier's internal layout and major PCB wiring diagrams.
* **Power On Sequence:** A detailed description of the power-on sequence.
**Main Controller:**
* **Key Components:** A detailed look at the main controller, including its construction, HDD, and PCB details.
* **Power Processes:** Descriptions of the start-up and shut-down sequences.
* **Image Processing:** A comprehensive guide to the image processing flow, including input and output processing, compression/expansion/editing techniques, and the flow of image data across various functions like copying, sending, and fax transmission.
* **Replacing Components:** Detailed instructions for replacing the main controller PCB, SDRAM, Boot ROM, and HDD.
**Original Exposure System:**
* **Components and Controls:** An in-depth explanation of the original exposure system, including its specifications, controls, functions, and major components like the Reader Controller PCB.
* **Operating Sequences:** Descriptions of the operating sequences during power-on, for book mode (1 original), and for ADF mode (1 original).
* **Control Systems:** Explanations of the control systems for the scanner drive, contact image sensor (CIS), enlargement/reduction, original size detection, dirt sensor control, and image processing.
* **Replacing Components:** Detailed instructions for replacing components like the copyboard glass, Reader Controller PCB, scanner motor, contact sensor, copyboard cover sensors, original size sensor, and reader heater.
**Laser Exposure:**
* **Construction and Operation:** A breakdown of the laser exposure system, including its specifications, controls, functions, and major components.
* **Operating Sequence:** A detailed description of the operating sequence.
* **Control Systems:** Explanations of the control systems for laser activation timing, laser light intensity, laser scanner motor, and laser shutter.
* **Replacing Components:** Step-by-step instructions for replacing the laser scanner unit.
**Image Formation:**
* **System Overview:** A detailed explanation of the image formation system, including its specifications and major components.
* **Image Formation Process:** A step-by-step explanation of the image formation process.
* **Operating Sequences:** Detailed descriptions of the operating sequences during initial and final rotation and copying.
* **Image Stabilization:** Explanations of APVC and ATVC for image stabilization.
* **Individual Component Details:** Thorough discussions of the drum unit, drum cleaner, developing unit, toner container, transfer unit, transfer mechanism, and photo sensitive drum cleaning, including their control systems.
* **Replacing Components:** Detailed instructions for replacing components like the pre-exposure lamp, drum unit, hopper assembly, sub-hopper, developing assembly, developing cylinder, transfer charging roller, waste toner box, and toner level sensor.
**Pickup/Feeding System:**
* **Paper Handling:** An in-depth explanation of the pickup/feeding system, including its specifications, controls, functions, arrangement of rollers and sensors, and diagrams of the paper paths.
* **Operating Sequences:** Descriptions of the basic sequence of paper pickup and feeding, including how the copier detects jams and other issues.
* **Individual Component Details:** Explanations of the cassette pick-up unit, manual feed pickup unit, registration unit, and duplex feeding unit.
* **Replacing Components:** Detailed instructions for removing and replacing a comprehensive list of components in the pickup/feeding system, including pickup units, rollers, sensors, motors, solenoids, and more.
**Fixing System:**
* **System Overview:** A detailed explanation of the fixing system, including its specifications, control mechanisms, functions, and major components.
* **Operating Sequences:** Descriptions of the operating sequences during power-on and down.
* **Control Systems:** Explanations of the control mechanisms for fixing film speed, temperature, cleaning, and the detection of paper passage.
* **Protective Functions:** Descriptions of the protective functions of the fixing system.
* **Replacing Components:** Step-by-step instructions for replacing components like the fixing unit, pressure roller, cleaning roller, fixing film, internal delivery sensor, and fixing film sensor.
**External Controls and Power Systems:**
* **Control Panel:** An explanation of the control panel, including its overview, LCD indication processing, adjustments, and the functions of the control panel CPU.
* **Counters:** Descriptions of the various counters used in the copier, including their overview and timing for increasing the count.
* **Fans:** Explanations of the fans in the copier, including their overview, speed control, and sequence of operation.
* **Power Supply:** Detailed information about the power supply system, including the power supply itself, its rated output, protective functions, and the backup battery system.
* **Energy Saving:** Descriptions of the copier's energy-saving features and how the machine operates with different power settings.
* **Replacing Components:** Instructions for replacing components like the main drive assembly, exhaust fan, main drive motor, fixing driver motor, right door, and circuit breaker.
**MEAP (Multifunctional Embedded Application Platform):**
* **Platform Overview:** A general overview of MEAP.
* **Counter:** Explanations of the MEAP counter.
* **Platform Construction:** Discussions of the construction of the MEAP platform.
**Maintenance and Inspection:**
* **Periodically Replaced Parts:** Lists of parts that need to be replaced periodically, both in the reader and printer units.
* **Durables and Consumables:** Lists of durables and consumables, again for both the reader and the printer units.
* **Scheduled Servicing:** Basic procedures for scheduled servicing, including for the reader and printer units.
* **Cleaning Procedures:** Detailed cleaning procedures, including cleaning the transfer/feed guide, developing assembly spacer, dust-blocking glass, fixing inlet guide, and film bias static eliminator.
**Standards and Adjustments:**
* **Image Adjustments:** Standards and procedures for adjusting image position.
* **Scanning System Adjustments:** Adjustments for the scanning system following replacement of the CIS or reader controller PCB.
* **Laser Exposure System Adjustments:** Adjustments after replacing the laser scanner unit.
* **Image Formation System Adjustments:** Explanations of adjustments after replacing the developing or drum unit.
* **Electrical Component Adjustments:** Instructions for adjustments after replacing the HDD, DC controller PCB, main controller PCB, or reader controller PCB.
* **Pickup/Feeding System Adjustments:** Details of adjustments for the pickup/feeding system, including adjusting horizontal registration and paper width.
**Troubleshooting Faulty Images:**
* **Initial Checks:** A checklist of items to inspect when troubleshooting faulty images.
* **Troubleshooting Guide:** A guide to troubleshooting common image faults and malfunctions.
* **Electrical Component Overview:** An overview of electrical components, including clutches, solenoids, motors, fans, sensors, switches, lamps, heaters, PCBs, variable resistors, light-emitting diodes, and check pins.
**Self Diagnosis:**
* **Error Code Table:** A table of error codes.
* **Error Code Details:** Detailed information about specific error codes.
* **SEND Function Error Codes:** Explanations of error codes related to the SEND function.
* **Jam Codes:** Details of jam codes for different areas of the copier (printer unit, finisher, ADF).
* **Alarm Codes:** A listing of alarm codes.
* **Finisher/Saddle Finisher Error Codes:** Explanations of error codes related to the finisher and saddle finisher.
* **DADF Error Codes:** Information about error codes related to the DADF (Duplex Automatic Document Feeder).
**Service Mode:**
* **Service Mode Overview:** Descriptions of the construction of service mode and how to enter and exit it.
* **Status Display Mode:** Explanations of the DISPLAY mode and its lists for copier, feeder, and other components.
* **I/O Display Mode:** Details of the I/O mode and its uses.
* **Adjustment Mode:** Covers the ADJUST mode and its lists for copier, feeder, and sorter.
* **Operation/Inspection Mode:** Explanations of the FUNCTION mode and its lists for copier and feeder.
* **Machine Settings Mode:** Descriptions of the OPTION mode and its lists for copier, feeder, sorter, and boards.
* **Test Print Mode:** Explanations of the TEST mode and its lists for copier.
* **Counter Mode:** Covers the COUNTER mode and its lists for copier.
**Service Tools:**
* **Special Tools:** Lists of special tools required for servicing the copier.
* **Oils and Solvents:** Lists of recommended oils and solvents for maintenance.
This service manual is an invaluable resource for technicians who need to diagnose and repair Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers. Its detailed instructions, diagrams, and pictures make it easy to understand and apply the information to real-world repair situations.This comprehensive service manual is your guide to diagnosing and repairing Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers. It includes detailed diagrams and step-by-step instructions for a wide range of procedures, covering everything from basic operation to complex component replacement.
**Key Features:**
* **Detailed System Overview:** Understand the copier's inner workings with clear explanations of its components, including delivery accessories, original handling systems, heaters, printing and transmitting accessories, and more.
* **Complete Product Specifications:** Find all the information you need about the copier's features, parts, power operation, control panel, user settings, maintenance procedures, safety guidelines, and a detailed list of functions.
* **Step-by-Step Installation Guide:** Learn how to set up the copier correctly with detailed instructions for unpacking, installing toner and the drum unit, securing the copier, connecting cables, stirring toner, setting cassettes, adjusting image position, and attaching other parts.
* **Troubleshooting Network Connectivity:** Get help with network connections and learn how to install optional accessories like card readers and network controllers.
* **Basic Operation Made Easy:** Explore the copier's internal layout, understand major PCB wiring diagrams, and follow the power-on sequence.
* **Main Controller Explained:** Get a detailed look at the main controller, its construction, HDD, PCB details, start-up and shut-down sequences, and the image processing flow. Learn how to replace key components like the main controller PCB, SDRAM, Boot ROM, and HDD.
* **Mastering the Original Exposure System:** Dive into the workings of the original exposure system, including its specifications, controls, functions, major components (like the Reader Controller PCB), operating sequences, control systems for the scanner drive, contact image sensor (CIS), enlargement/reduction, original size detection, dirt sensor control, and image processing, and detailed instructions for replacing components like the copyboard glass, Reader Controller PCB, scanner motor, contact sensor, copyboard cover sensors, original size sensor, and reader heater.
* **Understanding the Laser Exposure System:** Explore the laser exposure system's specifications, controls, functions, major components, operating sequence, control systems for laser activation timing, laser light intensity, laser scanner motor, and laser shutter, and learn how to replace the laser scanner unit.
* **Image Formation Demystified:** Discover the image formation system's specifications, major components, step-by-step image formation process, APVC and ATVC for image stabilization, details on the drum unit, drum cleaner, developing unit, toner container, transfer unit, transfer mechanism, and photo sensitive drum cleaning, and detailed instructions for replacing components like the pre-exposure lamp, drum unit, hopper assembly, sub-hopper, developing assembly, developing cylinder, transfer charging roller, waste toner box, and toner level sensor.
* **Paper Handling Made Simple:** Learn about the pickup/feeding system, its specifications, controls, functions, arrangement of rollers and sensors, diagrams of paper paths, operating sequences, how the copier detects jams, and detailed explanations of the cassette pick-up unit, manual feed pickup unit, registration unit, and duplex feeding unit. Get step-by-step instructions for replacing a wide range of components in the pickup/feeding system, including pickup units, rollers, sensors, motors, solenoids, and more.
* **Fixing System Demystified:** Understand the fixing system's specifications, control mechanisms, functions, major components, operating sequences, control systems for fixing film speed, temperature, cleaning, and the detection of paper passage, protective functions, and detailed instructions for replacing components like the fixing unit, pressure roller, cleaning roller, fixing film, internal delivery sensor, and fixing film sensor.
* **External Controls and Power Systems Explained:** Explore the control panel, its overview, LCD indication processing, adjustments, and the functions of the control panel CPU. Learn about the various counters used in the copier, including their overview and timing for increasing the count. Discover the fans in the copier, including their overview, speed control, and sequence of operation. Get detailed information about the power supply system, including the power supply itself, its rated output, protective functions, and the backup battery system. Learn about the copier's energy-saving features and how the machine operates with different power settings. Find instructions for replacing components like the main drive assembly, exhaust fan, main drive motor, fixing driver motor, right door, and circuit breaker.
* **MEAP (Multifunctional Embedded Application Platform):** Gain a general overview of MEAP, understand the MEAP counter, and explore the construction of the platform.
* **Maintenance and Inspection Guide:** Learn about periodically replaced parts, durables and consumables, scheduled servicing procedures, and detailed cleaning procedures.
* **Standards and Adjustments:** Get guidance on adjusting image position, adjusting the scanning system after component replacement, adjusting the laser exposure system after component replacement, adjusting the image formation system after component replacement, adjusting electrical components after replacement, and adjusting the pickup/feeding system.
* **Troubleshooting Faulty Images:** Learn how to make initial checks, troubleshoot common image faults and malfunctions, and understand electrical component details.
* **Self Diagnosis Made Easy:** Use the error code table and detailed information about specific error codes. Understand error codes related to the SEND function, jam codes for different areas of the copier, alarm codes, finisher/saddle finisher error codes, and DADF error codes.
* **Navigating Service Mode:** Learn the construction of service mode, how to enter and exit it, and understand the DISPLAY, I/O, ADJUST, FUNCTION, OPTION, TEST, and COUNTER modes.
* **Essential Service Tools:** Find lists of special tools and recommended oils and solvents for maintenance.
This service manual is designed to be your comprehensive guide for diagnosing and repairing Canon imageRUNNER iR2270, iR2870, iR3570, and iR4570 copiers.
