Lexmark C540 Service Manual - Page 95

5025-2xx, 4xx Description Skew Value -100 to +100 Each increment corresponds to 1/1200 of an inch. The default is 0. Direction of change A positive value causes the left end of the scan line to move down the page. A negative value causes the left end of the scan line to move up the page. The right end stays fixed. There is no compression or expansion of the image. 6. Print another copy of the Quick Test to verify your changes. 7. Continue changing the settings by repeating steps 3 through 5. To exit Registration, press Back ( ) or Stop ( ). Skew One printhead houses the four color planes. The black plane is aligned to the printer, and the other color planes are internally aligned to black. Electronic alignment fine tunes the alignment of the color planes to the black plane once the printhead is installed. See "Alignment" on page 3-7 for instructions on setting printhead alignment. This must be performed before color skew adjustment is attempted. The following illustration shows proper alignment versus skewed alignment. Straight Skewed Quick Test The Quick Test contains the following information: • Print registration settings • Alignment diamonds at the left, right, top, and bottom • Horizontal lines to check for skew Diagnostic aids 3-5