Lexmark T640 Service Manual page 224

4061-xx0
Step B
Print a copy of the Quick Test Page, and check the margin adjustments printed on the test page. These settings
should be within the range specified in
without loosening the locknut. Turn the screw a few turns, and print a copy of the Quick Test Page as you check
the diamonds on the left margin. Continue adjusting the screw as you check the results of each adjustment on a
new test page until you obtain the results you want.
4-4
Service Manual
"REGISTRATION" on page 3-4. The reference screw can be adjusted