# Maintenance Box Detection Sensor Assy (EM-C800 Series)

1. Remove the four screws, then remove the Rear Cover (Back) (A).
   
   • : C.B.P-TITE-SCREW-3x10-F.ZN-3C

   Assembly / 組み立て

   Attach the two dowels of the Rear Cover (Back) (A) to the positioning holes on the Housing Left (B) and Housing Right (C).

2. Remove the two screws, then remove the Rear Top Cover (A).
   
   • : C.B.P-TITE-SCREW-3x10-F.ZN-3C
3. Open the ADF/SCN Unit and remove the three screws that secure the Housing Left (A).
   
   • : C.B.P-TITE-SCREW-3x10-F.ZN-3C
4. Lift the Housing Left (A) to release the two hooks on the front side of the Housing Left.
   
5. Disengage two hooks on the rear side of the Housing Left (A), and remove the Housing Left (A).

   
   

   Assembly / 組み立て

   Insert the eight tabs on the Housing Left (A) to the positioning holes of the Housing Upper (B) and the RIPS Unit (C).

6. Disengage the hook, and remove the Maintenance Box Cover (A).
   
7. Open the ADF/SCN Unit and remove the four screws that secure the Housing Right (A).
   
   • : C.B.P-TITE-SCREW-3x10-F.ZN-3C
8. Lift the Housing Right to release the two hooks on the front side of the Housing Right, then remove the Housing Right.

   
   

   Assembly / 組み立て

   Insert the four tabs of the Housing Right (A) to the positioning holes on the Ink Supply Unit.

9. Remove the six screws, then remove the Housing Upper (A).
   
   • : C.B.P-TITE-SCREW-3x10-F/ZN-3C
10. Remove the two pieces of acetate tape (A), and disconnect the cable (C) from CN100 connector on the Main Board (B).

    
    

11. Release the cable (B) from the two guides and the clamp (A).

    
    

12. Release the cable (B) from the protective sheet (A) by opening the sheet in the direction of the arrow.

    

    Assembly / 組み立て

    Insert the two tabs of the protective sheet (A) into the two slits respectively.

13. Disconnect the ground wire (A), and while pushing the connector’s tab upward, disconnect the cable (C) from CN799 connector on the Main Board (B).

    
    

14. Open the ADF/SCN Unit (A).
    

    Caution / 注意

    If you remove or attach the ADF/SCN Unit while it is closed, the hinge may be damaged.

    
15. Remove the two screws and remove the ADF/SCN Unit (A) in the direction of the arrow.
    
    
    • : C.B.P-TITE-SCREW-3x10-F.ZN-3C

    
    

    Assembly / 組み立て

    Before screwing the ADF/SCN Unit, make sure the hinges are properly attached in place. If the ADF/SCN Unit is opened when the hinges are NOT secured, the unit may be damaged.

16. Remove the screws that secure the Wasted Ink Duct Holder (A).

    
    

    • : C.B.P-TITE-SCREW-3x10-F.ZN-3C
17. Lift the Waste Ink Duct Holder (A) up from below, slide to remove the hook while keeping the rear surface downwards, and remove the Waste Ink Duct Holder (A).

    
    

18. Remove the two screws that secure the Maintenance Box Detection Sensor Holder (A).
    
19. Disconnect the FFC (C) of the Maintenance Box Detection Sensor (B) from the connector (A) on the Main Board.
    
20. Release the FFC (C) from four hooks (B) on the Paper Feed Sensor Unit (A).
    
21. Peel off the two double-sided tapes, and remove the FFC (B) from the Main Frame Assy (A) and maintenance box slot.
    
22. Remove the Maintenance Box Detection Sensor Assy (A) from the maintenance box slot.

    
    

    Assembly / 組み立て

    Route in such a way that the FFC (C) terminal (contact surface) is at the side of the Paper Feed Sensor Unit (D) from the gap (B) of the Maintenance Box Upper Cover (A).

• • : C.B.P-TITE-SCREW-3x10-F.ZN-3C