Lexmark MX81 series - Adjustments; Media Aligner Roller Adjustment

Adjustments
• “Media aligner roller adjustment” on page 283
• “Polygon printhead mechanical registration adjustment” on page 284
• “ADF skew adjustments” on page 287
• “Media squareness check” on page 291
• “Print skew correction” on page 292
• “Copy skew correction” on page 294
Media aligner roller adjustment
Complete the media aligner roller adjustment procedure when you replace the media aligner roller. Always print a copy
of the Quick Test Page before making any adjustments to the media aligner roller reference adjustment screw.
Note: When replacing the media aligner roller, back the reference adjustment screw out far enough to remove the
old media aligner roller and install the new one. It is not necessary to remove the screw.
• If you have just replaced the media aligner roller, go to “Step A” on page 283.
• If you are only correcting the top margin skew, go to “Step B” on page 283.
• If you are correcting the bottom margin skew or both top and bottom margin skew, go to “Step C” on page 284.
Step A
Set the initial position of the media aligner roller plate using a 3mm hex wrench at the access hole indicated in the
following image (left), to give a position roughly 20.5mm as shown in the image below (right). This is the nominal point
and should minimize the amount of adjustment needed.
Continue to “Step B” on page 283.
Step B
Print a copy of the Quick Test Page, and check the top alignment indicators printed on the test page. The difference in
the print location to the top edge of the paper between the left and right alignment indicators should be 0.5mm (one
dot) or less. Depending on the skew, turn the screw either clockwise or counterclockwise using a 3mm hex wrench,
and print a copy of the Quick Test Page to check the diamonds on the top and bottom margin. Continue adjusting the
screw as you check the results of each adjustment on a new test page until the top image skew is below 0.5mm. One
full 360-degree turn of the aligner screw will change the top edge skew by roughly 1mm (2 alignment indicator dots).
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Repair information
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