Lexmark MS312 Service Manual page 167

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Horizontal lines for skew adjustment
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General printer information, including current page count, installed memory, processor speed, serial
number, engine ID, and controller board ID
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.
Top Margin
This setting controls the offset between the placement of the first scan line on the front and back side of a
duplex sheet.
Note: If adjustment is necessary, the top margin in the Registration menu must be adjusted first. The duplex
top margin may be adjusted next.
To adjust this setting:
1
From the Diagnostics menu, navigate to:
Duplex Tests > Top Margin
2
Change the margin value.
Changing the value by 1 unit moves the margin by 1/100 in. A positive value moves the text down the page
and widens the top margin. A negative value moves the text up the page and narrows the top margin.
3
Press OK to save the desired margin value.
Left Margin
This setting allows the user to shift the position of the left margin of the back side of a duplexed page to the
left or right. The default margin is 1/4 in.
To adjust this setting:
1
From the Diagnostics menu, navigate to:
Duplex Tests > Left Margin
2
Change the margin value.
Each increment corresponds to 4 pels at 600 dpi (0.00666 in. or 0.1693 mm). A more positive offset moves
the margin to the right, and a more negative offset moves the margin to the left.
3
Press OK to save the desired margin value.
Sensor Test
Use this test to determine if the duplex sensor and switches are working properly.
Service menus
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