Lexmark T430 Service Manual - Page 104

4048-1xx 3. Select Single to print a single duplex page or Continuous to continue printing until Return or Stop is pressed. The printer attempts to print the Quick Test Page from the default paper source. If the default paper source only supports envelopes, then the page is printed from Tray 1. 4. Check the Quick Test Page for the correct offset between the placement of the first scan line on the front and back side of a duplexed sheet. If adjustment is necessary, see "Top Margin" on page 3-10. 5. Press Return or Stop to exit the test. Top Margin Print the duplex Quick Test to verify the margin on the backside of the duplex page aligns with the front side. See "Quick Test" on page 3-9. Since this test aligns against the front page, make sure the front page is aligned (the front side of a duplex page is facedown in the output bin). See "REGISTRATION" on page 3-4. The Duplex Top Margin offset range is -16 to +16 and the default is zero. Adjustment of this setting lets you shift up or down the position of the Top Margin. Changing this parameter by one unit moves the margin 0.25mm. A positive offset moves the text down the page and widens the top margin while a negative offset moves the text up the page and narrows the top margin. 3-10 Service Manual