# CH83 Main Board - CH83 Main-B Board FFC

1. Release the 6 locks (A), and remove the 6 Ink Pack Trays (B). (Only perform for SC-P8500DL series/SC-T7700DL series)
   

2. Open the Maintenance Cover (A). (Only perform for SC-P8500DL series/SC-T7700DL series)

   

3. Remove the screw. (Only perform for SC-P8500DL series/SC-T7700DL series)
   
   
   • :Black M3x8 S-tite screw

4. Release the hook, and remove the Ink Holder (RIPS) Upper Cover (A). (Only perform for SC-P8500DL series/SC-T7700DL series)
   

   Assembly / 組み立て

   Insert the Ink Holder (RIPS) Upper Cover (A) tab (B). Insert the Ink Holder (RIPS) Upper Cover (A) hook (C).

5. Remove the two screws, and remove the USB cable (A). (Only perform for SC-P8500DL series/SC-T7700DL series)
   

   • : Silver M3x8 P-tite screw

6. Remove the two screws. (Only perform for SC-P8500DL series/SC-T7700DL series)
   

   • : Silver M3x8 S-tite screw
7. Pull the Ink Pack Tray Right Side (A) slightly forward and release the 2 dowels. (Only perform for SC-P8500DL series/SC-T7700DL series)

8. Slide the Ink Pack Tray Right Side (A) upwards to remove. (Only perform for SC-P8500DL series/SC-T7700DL series)
   

   Assembly / 組み立て

   The gray lock lever (A) and ink plate (B) will come off when removing the Ink Pack Tray Right Side (C). Install them after installing the Ink Pack Tray Right Side (C) in the main unit. With the lock lever (A) and tray lever (B) moved to the right side, install the Ink Pack Tray Right Side (C). After installing the Ink Pack Tray Right Side (A), move the lock lever (B) and confirm that the tray lever (C) moves in conjunction.

9. Open the Maintenance Box Cover (A).
   
10. Release the 2 tabs of the Maintenance Box Cover (A) in the order shown in the figure below, and remove.
    
11. Remove the Maintenance Box (A).
    
12. Remove the screw.
    
    
    • : Silver M3x8 Cup S-tite screw
13. Insert a flathead screwdriver and release the 2 hooks each, and remove the two screw cover (A).
    
14. Insert a flathead screwdriver and release the 2 hooks, and remove the screw cover (A).
    
15. Remove the three screws at the front side.
    
    • : Black M3x8 Cup P-tite screw
16. Remove the five screws at the right side.
    
    • : Silver M3x8 Cup S-tite screw
    • : Silver M4x8 Cup S-tite screw
17. Remove the four screws at the rear side.
    
    • : Silver M3x8 Cup S-tite screw with plastic washer
    • : Silver M3x8 Cup S-tite screw
18. On the printer rear side, release the dowel of the Home Side Cover Unit (A).
    
19. Insert a flathead screwdriver and release the 2 tabs each, and remove the Home Side Cover Unit (A) in the direction of the arrow.
    
20. Insert a flathead screwdriver and release the two hooks, and remove the screw cover (A).
    
21. Open the Printer Cover (A) and the Cutter Cover (B).
    
22. Remove the three screws at the front side.
    
    • : Silver M3x10 Cup P-tite screw
    • : Silver M3x8 Cup S-tite screw
23. Remove the screw at the top side.
    
    • : Silver M3x8 Cup S-tite screw
24. Remove the four screws at the rear side.
    
    • : Silver M3x8 Cup S-tite screw with plastic washer
    • : Silver M3x8 Cup S-tite screw
      
25. Remove the four screws at the left side.
    
    • : Silver M3x8 Cup S-tite screw

26. On the printer rear side, release the dowel of the Full Side Cover Unit (A).
    

27. Remove the Full Side Cover Unit (A) from the dowels, and remove it while it in the direction of the arrow.
    

    Assemble / 組み立て

    When installing the Full Side Cover Unit (B), carefully the Head FFC (A) so that it does not damage.

28. Remove the screws on the top.
    SC-P8500D series/SC-T7700D series/SC-P8500DL series/SC-T7700DL series/SC-P8500DM series/SC-T7700DM series: 8 pcs
    
    • : Silver M3x8 Cup S-tite screw
    SC-T5700D series/SC-T5700DM series: 6 pcs
    
    
    • : Silver M3x8 Cup S-tite screw
    SC-P6500D series/SC-P6500DE series/SC-T3700D series/SC-T3700DE series/SC-P6500E series/SC-T3700E: 4 pcs
    
    
    • : Silver M3x8 Cup S-tite screw
29. Remove the screws on the back.
    SC-P8500D series/SC-T7700D series/SC-P8500DL series/SC-T7700DL series/SC-P8500DM series/SC-T7700DM series: 6 pcs
    
    • : Silver M3x8 Cup S-tite screw
    SC-T5700D series/SC-T5700DM series: 11 pcs
    
    
    • : Silver M3x8 Cup S-tite screw
    • : Silver M3x8 Cup S-tite screw with plastic washer
    SC-P6500D series/SC-P6500DE series/SC-T3700D series/SC-T3700DE series/SC-P6500E series/SC-T3700E: 8 pcs
    
    
    • : Silver M3x8 Cup S-tite screw
    • : Silver M3x8 Cup S-tite screw with plastic washer
30. Remove the Printer Cover Unit backward.
    
31. Remove the four screws and then remove the Housing Support Plate.
    
    • : Silver M3x8 Cup S-tite screw
32. On the printer right side, remove the 11 screws (A).
    
    • : Silver M3x8 Cup S-tite screw

33. Remove the CH83 Main Circuit Board (A).
    

    Assemble / 組み立て

    Take care that the cables do not get pinched. There are four positioning locations.

34. Remove the seven screws and then remove the CH83 Main-B Board Cover (A).
    
    • : Silver M3x8 Cup S-tite screw

    Assemble / 組み立て

    Take care that the cables do not get pinched.

    
    

35. Open the Rear Cover (A).
36. Remove the two screws.
37. Release the two hooks of the Housing Rear Upper 1 (B) while sliding it upward, and remove it.
    
    • : Silver M3x8 Cup S-tite screw
38. Remove the screw.
    
    • : Silver M3x8 Cup S-tite screw
39. Open the Rear Cover (A).
40. Release the hook while sliding the Housing Rear Home Middle Cover (A) upward, and remove it.
    
41. Remove the screw.
42. Release the two hooks of the Housing Rear Lower 1 (A) while sliding it upward, and remove it.
    
    • : Silver M3x8 Cup S-tite screw
43. Remove the screw.
44. Release the two hooks of the Housing Rear Lower 2 (A) while sliding it upward, and remove it.
    
    • : Silver M3x8 Cup S-tite screw
45. Remove the screw.
    
46. Release the two hooks of the Housing Rear Lower 3 (A) while sliding it upward, and remove it.
    
    
    • : Silver M3x8 Cup S-tite screw
      
47. Remove the two screws.
    
    • : Silver M3x8 Cup S-tite screw
48. Open the Rear Cover (A).
49. Release the hook while sliding the Housing Rear Full Middle Cover (A) upward, and remove it.
    
50. Remove the screw.
    
51. Release the two hooks of the Housing Rear Lower 4 (A) while sliding it upward, and remove it.
    
    
    • : Silver M3x8 Cup S-tite screw
      
52. Open the Rear Cover (A).

53. Slide and remove two straps (B) in the direction of the arrow while slightly lifting them using a flat-blade screwdriver or similar tool.
    
    

    Check Point / チェックポイント

    Work with the Rear Cover slightly opened.

    
    

54. Remove the two screws.
    
    
    • : Silver M3x8 Cup S-tite screw
      
55. Disengage the two hooks on each side, pull out the center shaft (A) from the hole, and remove the Rear Cover (B).
    
    
56. Remove the screw.
57. Release the hook of the Housing Rear Lower 5 (A) while sliding it upward, and remove.
    
    
    • : Silver M3x8 Cup S-tite screw
58. While pressing 2 hooks, remove the FFC (B) from the CH83 Main-B Circuit Board connector (CN407) (A).
    
59. Pull the FFC (B) into the frame hole (A).
    
60. Bend the FFC (A) and while pushing the FFC holder hook (B), slide the ferrite core (C) in the direction of the arrow.
    

61. Release the FFC (B) from the 3 tabs of the FFC holder (A). The number of FFC holders will differ between models.
    SC-P8500D series/SC-T7700D series/SC-P8500DL series/SC-T7700DL series/SC-P8500DM series/SC-T7700DM series: 7 pcs
    SC-T5700D series/SC-T5700DM series: 5 pcs
    SC-P6550D series/SC-P6550DE series/SC-T3750D series/SC-T3750DE series/SC-P6550E series/SC-T3750E series: 4
    

62. Bend the FFC (A) and while pushing the FFC holder hook (B), slide the ferrite core (C) in the direction of the arrow.
    
63. Pull out the FFC (B) from the frame hole (A).
    
64. While pressing 2 hooks, remove the FFC (B) from the Printer Main Circuit Board connector (CN101) (A).
    
65. Pull the FFC (B) into the frame hole (A).
    
66. Insert your hand from under the FFC (A), release the 2 hooks of the FFC clamp (B), and remove.
    
67. Pull out the FFC (B) from the frame hole (A).
68. Bend the FFC (A) and while pushing the FFC holder hook (B), slide the ferrite core (C) in the direction of the arrow.
    
69. Release the FFC (B) from the 6 dowels of the FFC holder (A).
    
70. Bend the FFC (A) and while pushing the FFC holder hook (B), slide the ferrite core (C) in the direction of the arrow.
    

71. Remove CH83 Main Board - CH83 Main-B Board FFC (A).
    

    Assembly / 組み立て

    The ferrite core (B) of new CH83 Main Board - CH83 Main-B Board FFC (A) has acetate tape (C) applied. Install after peeling off the acetate tape (C).