Lexmark C750 Service Manual - Page 430

5060-00x Printhead alignment Identifying the printheads Warnings: • Do not loosen or replace more than one printhead at a time to retain factory settings. • Whenever a printhead is replaced, you must to perform the "Printhead mechanical alignment" on appendix page A-5 and "Electronic color alignment" on appendix page A-12. • The front cover must be installed and closed before any printhead alignment can be performed. It is not necessary to remove the front cover to access the printheads. • If there is a protective lens cover on the new printhead, it must be removed before installing the replacement printhead. A-4 Service Manual