Revision History

Date Version Chapter Revised Details
May 16, 2024 Rev. A - First release
July 22, 2024 Rev. B Overall

Change parts name

  • ADF Paper Feed Roller Unit → ADF Cover Unit

Change chapter name

  • Disassembly/Assembly → Repair and Adjustment

Change section name

  • Operations Before/After Parts Exchange → Other Troubles
  • List of Disassembled Parts requiring Manual Execution of Specific Menus → List of parts for which the Adjustment for Replacement Parts menu is not available

Change chapter structure

  • Direction Definitions (Section[Precautions before Repair Work] → [Disassembly & Assembly])
  • Recommended Tools (Section[Precautions before Repair Work] → Chapter[Repair and Adjustment])
  • Other Troubles (Chapter[Repair and Adjustment] → Chapter[Troubleshooting])
Troubleshooting
Repair and Adjustment
  • EM-C800 Series Disassembly Flowchart：Change the ADF/SCN Mechanism disassembly flowchart
  • ADF/SCN Unit：Change the method for removing the ADF/SCN Unit
  • Hinge Assy (Left)：Change the method for removing the ADF/SCN Unit
  • Hinge Assy (Right)：Change the method for removing the ADF/SCN Unit
  • ADF Cover Unit：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • ADF Document Support：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • ADF Front Cover：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • ADF Front Cover：Change the procedure for opening the ADF Unit
  • Document Mat：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • Document Mat：Change the procedure for opening the ADF Unit
  • ADF LD Roller Spring：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • Separation Pad：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • Rear ADF Cover：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • Rear ADF Cover：Change the procedure for opening the ADF Unit
  • ADF LD Roller：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • Separation Pad Spring：Change the procedure to disassemble and assemble the ADF/SCN unit without removing it from the main unit.
  • Recommended Tools：Delete Torque driver because of unnecessary
Service Support Mode
Appendix

November 17, 2024

 Rev. C

Structure/Operating Principle

Troubleshooting
  • Normal Errors： Add new error codes (950091, 950092, and 950093)
Repair and Adjustment

The following three changes are reflected in the following pages

  1. Replacement of images of Ink Supply Tube due to the change of parts
  2. Deletion of description of ink leak check
  3. Addition of precautions and checkpoints for removing the Ink Supply Tube

Addition of adjustments related to PG check

Service Support Mode

Adjustments & Additional Operations

Maintenance/Inspection
Appendix
February 21, 2025 Rev. D Installation and Setup
Repair and Adjustment
Service Support Mode
Appendix
October 31, 2025 Rev.E Structure/Operating Principle

Added Ink Supply Unit related descriptions due to its rationalization.
Installation and Settings
Service Support Mode
Repair and Adjustment

Changed the disassembly/assembly procedure for the Ink Supply Unit.

Changed the disassembly/assembly procedure for the move the Ink Supply Tube.

Changed the procedures before and after the replacement.
Appendix
  • Exploded Diagram/Parts List: Delete the page
November 20, 2025 Rev.F Troubleshooting
March 9, 2026 Rev.G Troubleshooting
Installation and settings