CR Unit　

Adjustment / 調整

When replacing/removing this part, refer to the following pages and make sure to perform the specified operations including the required adjustments.

  1. Remove one screw.

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  2. Slide the Right SC Cover (A) while pushing the dent (B) of Right SC Cover, and release the three tabs. Remove the Right SC Cover (A).
  3. Remove one screw.

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  4. Slide the Left SC Cover (A) while pushing the dent (B) of Left SC Cover, and remove it.
  5. Remove one screw, and remove the Lower SC Reinforcing Plate (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  6. Reattach the Lower SC Reinforcing Plate (A) in its portrait orientation, then secure it with the screw.

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  7. Remove the screw.

    • : C.SHOULDER S-TITE,3X5
  8. Open the ADF/SCN Unit (A).
  9. Open the ADF/SCN Unit (A) and extend the support stand (B) as far as it goes, then support the ADF/SCN Unit with the support stand.


    Caution / 注意

    Make sure that the support stand (A) is fixed with the two hooks, and the two triangle marks (B) face to each other.
    Check Point / チェックポイント

    When closing the ADF/SCN Unit (A), press the switch (C) on the ADF/SCN support stand (B) and hold up the ADF/SCN Unit to disengage the two hooks, then fold the ADF/SCN support stand.
  10. Remove the screw.

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  11. Release the Hook, then slide the Front Right Cover (A) to direction of arrows and remove it.
  12. Remove the five screws. (one of them is also securing the panel ground wire)


    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
    Assembly / 組み立て

    There is a place to fasten the grounding wire (B) together when fixing the panel (A).
  13. Remove the two FFC clamps (A).
  14. Release the Panel FFC (A) and the grounding wire (B) from the guide (C).
  15. Open the Front Cover Assy (A).
  16. Slide the panel unit  (A) rightward to remove it.


  17. Put the Panel Unit (A) at the rear side of the printer.


  18. Remove the Stacker Assy (A).
  19. Remove the seven screws, then remove the Front Housing Frame Assy (A).

    • : C.B.S-TITE-R-SCREW-3x6-F.ZN-3C
  20. Move the CR Unit (A) to the print head replacement position.


  21. Remove the thee screws that secure the joint portion of ink tube (A).


    • : C.B.S2-3x12-F.ZN-3C
    • : C.B.P-TITE-SCREW-2.5x10-F.ZN-3C

  22. Remove the ink tube joint portion.

    Caution / 注意

    To prevent the ink tube joint portion from being damaged, hold the frame (A) of the ink tube joint portion with both hands and remove the joint portion straight upward.

  23. Attach the ink tube joint portion to the hook (A) on the frame.
  24. Disconnect the FFC (B) from the connector (A) of the CR encoder sensor.
  25. Remove the three screws, then remove the Print Head (A).
    • : SCREW,MOUNT,HEAD,ASSY
  26. Disconnect the four Head FFCs (B) from the connector of the Print Head (A).


    Assembly / 組み立て
    Print Head (Preparation before reassembly)

    Check Point / チェックポイント

    Make sure to clean the Ink tube joint part (A) of Ink Supply Unit by using the Cleaning stick, because perform the Ink Leak Check correctly. Make sure to clean the Ink tube joint part of Printhead by using the Cleaning stick, because perform the Ink Leak Check correctly.
    Caution / 注意

    If ink is remained to Ink tube joint part, Ink Leak Check can not perform correctly. Therefore cleaning the ink surely.
    Assembly / 組み立て
    Installing the Print Head

    Follow the procedure below to install the Print Head.

    1. Connect the four Head FFCs (B) to the connector of the Print Head (A).

    2. Press the Print Head (A) in the direction of the arrow in order, set it to the CR Unit, and fix it with the three screws.

      • : SCREW,MOUNT,HEAD,ASSY
    3. Connect the FFC (A) to the connector of the CR encoder sensor.
    4. Set the Ink Tube Connector (A) at the Print Head, and fasten it using three screws.
      • : C.B.S2-3x12-F.ZN-3C
      • : C.B.P-TITE-SCREW-2.5x10-F.ZN-3C
    Assembly / 組み立て
    Confirmation after replace the Print Head

    In this printer, the cap of the ink system follows the inclination of the Print Head. However, if hardened ink is accumulated on the cap, capping may not be done properly and printing failure may result. After the adjustment is complete, make sure to perform the operation check of the cap following the procedure below.

    1. Push the cap of the ink system (A) to the rear and confirm the cap (B) surely returns to the original position.
    2. Push the cap of the Cap Unit to the home position and confirm the cap surely returns to the original position.

    3. Repeat Step 1 to Step 2 a few times. If the action of the cap is too slow or awkward, or does not return to the original position, replace the ink system with a new one.

    4. Turn the printer on in service support mode.
    Assembly / 組み立て
    Preparation before Adjustment
    1. Wrap the front cover open sensor (A) with tape, and disable the sensor function.

    2. Install the ink pack and the Maintenance Box.

    3. Start the Printer by Service Support Mode.（Overview)
    Caution / 注意

    Wrap the front cover sensor (A) with tape surely. (When the adhesive tape peels off, the CR unit unintentionally moving.)
    Assembly / 組み立て
    Adjustment after replacing the Print Head (Inspection& Ink Charge)
    1. Select the “Adjustment Main Unit: MENU” from the service support mode menu.
    2. Select the “Main Parts Adjust: MENU” from the Adjustment Main Unit: MENU.
    3. Select the “Print Head: MENU” and execute the “B80 After Repair Adjustment”.
    Check Point / チェックポイント

    Execute the nozzle check after the initial ink charge because the ink leak check is performed after this.
    Assembly / 組み立て
    Installing the Leak Check Jig

    Types of Ink Leak Measurement Jig

    Name EPSON Part Code Photo Remarks
    LEAK TESTER
    SHEET FRONT    		 1684353

    (A)Smoked Face (B)10mm


    Check Point / チェックポイント

    In this product, Ink Leak Check is necessary to prevent the ink leakage due to assembly mistake. Therefore, make sure to install the ink leak measurement jig (A) when installing the Ink Tube to Printhead.
    Before using the Leak Check Jig (A), push the ink leak measurement jig along the folds until the fold angle become 90 (B) degrees.

    1. Select the “Adjustment Main Unit: MENU” from the service support mode menu.
    Caution / 注意

    The smoked face of ink leak measurement jig (B) is put toward the upside.
    Assembly / 組み立て
    Leak Check Judgment
    1. Perform the Ink leak check based on the determination criteria of the Ink Leak Check.
    Assembly / 組み立て
    Adjustment after replacing the Print Head (Adjustment)
    1. Perform the adjustment in order from the head angular mecha adjustment. (Refer to After Repair Adjustment [B80] (Print Head))
  27. Open the Duplex Print Cover (A).
  28. Remove the seven screws.

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  29. Press the Rear Housing Assy (A) in the direction of the arrow, then release the hook.
  30. Remove the Rear Housing Assy (B) while releasing the place interfering with the Rear ASF Unit (A).
  31. Release the Cable from two clamps (A).
  32. Disconnect the cable (C) from connector (B) of Power Supply Unit (A).
  33. Remove the four screws and then remove the Rear ASF Unit (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  34. Remove the four screws fastening the Left Housing (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  35. Remove the two dowels.
  36. Remove the rib on the front side while lifting up the Left Housing (A).
  37. Remove the rib on the back side while lifting up the Left Housing (A), release the hook (B) and then remove the Left Housing (A).
  38. Remove the six screws fastening the Power Supply Unit Mounting Plate (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  39. Lift up the frame and remove a dowel (A).
  40. Lift up the Power Supply Unit Mounting Plate (A), turn it in the direction of the arrow, and remove the two ribs (D) while releasing the unit interfering (C) with the Side Frame (B).
  41. Remove the Power Supply Unit Mounting Plate (A).


    Assembly / 組み立て

    Before tightening the screws, make sure the positioning points are correctly assembled with reference to the figure below.

    • A: Interfering Unit
    • B: Rib
    • C: Dowel
  42. Remove the screw fastening the Tube Guide (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  43. Remove the interfering unit, and retract the Tube Guide (A) to the back side.
  44. Remove the screw, then remove the PF Brush Assy (A).

    • :C.B.S-TITE-SCREW-3x6-F.ZN-3C
  45. Remove the two screws, then remove the APG Drive Assy (A).
    • : C.B.S-TITE-SCREW-3x6-F. ZN-3C

  46. Disconnect the cable (B) from the connector (A) of the sensor.

    Assembly / 組み立て
    • Align the triangle mark (B) on the left APG cam (A) with the triangle mark (B) on the spur gear 14.4 (D) on the APG Drive Assy (C). At this point, make sure the mark (F) on the combination gear (E) can be seen through the hole on the APG Drive Assy (C).
    • Insert the pin (G) on the upper paper guide into the groove on the release shaft holder of the APG Drive Assy.
    Check Point / チェックポイント
    • If the left and right APG cams are not in the correct position, the gears cannot be phasealigned. Therefore, ensure the left and right APG cams are in the correct position prior to installing the APG Drive Assy.
    • With the power turned OFF, ensure the circle mark on the left and right APG cams are positioned below. If the circle marks are not positioned below, then the APG cam may be installed the wrong way up on the shaft. Therefore, check the orientation and reinstall.
    • When assembling the APG Drive Assy, check that the triangle mark on the Left APG Cam is positioned toward the APG Drive Assy, and that “6” on the Right APG Cam is positioned below. * To align the APG Drive Assy and APG cam phases, it is necessary to lift up the shaft upon which the APG cams are installed.
  47. Remove the two screws, then remove the Ink Holder Cover (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C

  48. At the full side, disengage the Extension Spring (A) from the hook of the frame.

    Caution / 注意
    • The CR Scale is made of SUS and very fragile. Therefore, take extreme care when handling one.
    • If you disassemble the CR Scale, exchange it for the new CR scale.
  49. Remove the CR Scale (A) from the hook of frame.
  50. At the home side, remove the CR Scale (A) from the hook of the frame.

  51. Pull out the CR Scale (B) from the slit of the CR Unit  (A).


    Assembly / 組み立て

    Follow the procedure below to install the CR Scale.

    1. At the full side, hook the CR Scale (A) on the frame.
    2. Hook the Extension Spring (A) on the frame.
    3. Route the CR Scale (B) through the slit on the CR unit (A).
    4. At the home side, hook the CR Scale (A) on the frame.
    5. Check the hook is inserted all the way.
  52. Remove the Driven Extension Spring (A) from the hook on the frame, and loosen the tension on the CR Timing Belt (B).
  53. Remove the CR Timing Belt (B) by sliding the Driven Pulley Holder (A) in the direction of the arrow.
  54. Remove the Driven Pulley Holder (A) with the Driven Extension Spring (B).
  55. Remove the screw, then remove the Left PG Cam Screw Holder (A) with the screw.

    • : C.C.SCREW-3x6-F.ZN-3C
  56. Slide the left PG cam (A) downward.
  57. Remove the Right PG Torsion Spring (A).
  58. Remove the screw, then remove the Left Mounting Plate (A).

    • : C.B.S-TITE-SCREW-3x6-F.ZN-3C

  59. Remove the E-ring (A) and the bush (B), then remove the left PG cam (C) and the parallel pin.

    Caution / 注意
    • When removing the APG gear, be careful not to touch the PF scale (A).
    • Be careful not to drop the parallel pin.
  60. Remove the four screws fastening the Right Housing (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  61. Release the hook.
  62. Remove the two dowels.
  63. Release the four hooks.
  64. Remove the Right Housing (A) while removing the rib.
  65. Remove the Right PG Torsion Spring (A).
  66. Remove the screw, then remove the CR Shaft Spring Mounting Plate (A).

    • : C.B.S-TITE-SCREW-3x6-F.ZN-3C
  67. Remove the plastic washer (A), then remove the Right APG Cam (B) and the parallel pin (C).

    Assembly / 組み立て

    Set the Right APG Cam so that “6” is at the bottom.
    Caution / 注意

    Be careful not to drop the parallel pin.
  68. Remove the screw, then remove the Right PG Cam (A).

    • : C.B.S-TITE-SCREW-3x8-F. ZN-3

      Assembly / 組み立て

      Align the marking on the Right PG Cam with the rib on the frame.
  69. Remove the E-ring (A) and the two plastic washers (B), then remove the right scale mounting plate (C).
  70. Remove the seven screws, then remove the Right Bearing Mounting Plate (A).

    • : C.B.S-TITE-SCREW-3x6-F.ZN-3C
  71. Remove the two screws, then remove the CR Guide Frame (A).

    • : C.B.S-TITE-R-SCREW-3x6-F.ZN-3C
  72. Remove the screw, then remove the USB Host Assy (A).

    • : C.B.S-TITE-SCREW-3x8-F.ZN-3C
  73. Remove the two screw, then remove the CR Motor Assy (A).

    • : C.P-SCREW-3x5-F.ZN-3C
  74. Remove the E-ring (A).
  75. Lift the CR Scale Mounting Plate (A), then remove the CR shaft (B).


    Assembly / 組み立て

    When installing the CR Scale Mounting Plate (A), set the shaft (C) of the CR Scale Mounting Plate into the hole (B) of the frame, and fix it with the E-ring.
  76. Pull out the CR shaft (A) from the printer, them remove the CR Unit (with CR Shaft) (B).
  77. Pull out the CR shaft (B) from the CR Unit (A).


    Assembly / 組み立て

    If protective film (A) is attached to the bottom of the carriage, ensure this is removed prior to replacement.
    Caution / 注意

    Lubrication is required when assembling the CR unit. Refer to "Lubrication" for lubrication points.