Lexmark CX310n Service Manual page 173

You must use either Letter or A4 paper.
To run the duplex quick test:
1
From the Diagnostics menu, touch DUPLEX TESTS >Duplex Quick Test.
2
Select Single or Continuous. The single test cannot be canceled.
The printer attempts to print the Quick Test Page from the default paper source. If the default paper source supports
only envelopes, then the page is printed from Tray 1.
3
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.
4
If adjustment is necessary, the Top Margin in the Registration menu must be adjusted first. The Duplex Top Margin
Offset may be adjusted next. 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.
5
Press Stop (X) to cancel the test.
Service menus
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