Lexmark X644E Service Manual - Page 396
Upper front cover hinge assembly removal, Remove the LCD touchscreen. See
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7002-xxx Upper front cover hinge assembly removal 1. Remove the ADF scan assembly. See "ADF complete assembly removal" on page 4-15. 2. Remove the flatbed scan assembly. See "Flatbed scan assembly removal" on page 4-38. 3. Remove the operator panel left cover assembly. See "Operator panel left cover assembly removal" on page 4-61. 4. Remove the operator panel right cover assembly. See "Operator panel right cover assembly removal" on page 4-64. 5. Remove the touchscreen bezel. See "Touchscreen bezel removal" on page 4-66. 6. Remove the LCD touchscreen. See "LCD touchscreen removal-models X644e and X646e" on page 4-67. 7. Remove printer left side cover. See "Printer left side cover removal" on page 4-56. 8. Remove printer right side cover. See "Printer right cover removal" on page 4-58. 9. Remove the printer upper cover. See "Upper cover removal (printer)" on page 4-133. 10. Remove the C-clips (A) from the upper front cover hinge assembly left and right hinge pins, and remove the pins. Note the pin orientation and the C-clip location on the inside of each hinge. 11. Detach the two springs (B) from the upper front cover hinges. 12. Detach two springs (C) from the left and right side of the hinge assembly. CB A BC 13. Disconnect the USB cable and cover open switch cable from the system board and UICC (18-pin) to scanner control card cable from the scanner control card. 4-136 Service Manual