Lexmark C750 Service Manual - Page 435

5060-00x 8. Securely close the front cover or reattach if previously removed. 9. If replacing the black printhead, go to step 12. Otherwise, enter Diagnostics Mode: a. Turn the printer off. b. Press and hold Go and Return. c. Turn the printer on. d. Release the buttons when Performing Self Test displays. 10. Select Alignment Menu, select the color of the printhead that was replaced, and set the Z value to zero. Exit the Diagnostics Menu 11. With the printer at Ready prompt, hook up a computer through the USB, network, or parallel connection and send the file, PHALIGN6.FLS, from the enclosed CD to the printer. Note: Lay the printed Printhead Mechanical Alignment Test Page across the printheads in this orientation as a reference. Use the magnifier lens included in the FRU to view the scales at the ends of the color lines. 12. Loosen the printhead screws before making any adjustments to the thumbwheel. Appendix A-Service tips A-9