Gap Adjustment; Printhead Assembly Adjustment - Lexmark T632 Service Manual

Gap adjustment

The gap adjustment allows you to increase the minimum gap between sheets of paper as they are
fed through the printer. This adjustment reduces the printer overall performance, such as pages per
minute, but can help in reducing the amount of curl of some printed medias, thus improving media
stacking in the output bin.
1.
Enter the Diagnostic Mode.
2.
Select Ep Setup from the Diagnostic Menu.
3.
Select Gap Adjust.
4.
The range of the GAP adjustment is 0 to 255. Adjust the gap setting by using Menu to select the
value. If GAP=0 displays, it indicates a factory setting to minimum gap. Select a value and run
several copies of the media that displays a curl problem. It may take several tries before
improvement is noticed.
Note: This setting has no effect when duplexing.

Printhead assembly adjustment

Do the printhead assembly adjustment whenever you remove or replace the printhead assembly or
loosen the mounting screws.
Install the new printhead with the three mounting screws centered in the slots in the printhead frame
assembly. Leave the screws loose enough to allow the printhead assembly to move from side to side
within the slots. It is necessary to perform a registration adjustment before locking down the three
printhead mounting screws.
To perform the registration adjustment:
1.
Turn the printer off.
2.
Press and hold Return and Go.
3.
Turn the printer on and release the buttons when "Performing Self Test" displays.
4.
Select Registration from the menu.
5.
Select Quick Test Page. The test page should only be printed on letter or A4 paper from Tray 1.
The Quick Test Page consists of alignment diamonds, horizontal lines that can be used for skew
adjustment, page count setting, printer serial number code levels, and print registration settings.
6.
Check the Quick Test Page for any sign of skew by checking the diamonds at the top left and top
right of the test page for equal distance from the top of the page. If necessary, adjust the left or
right printhead mounting screws and check the skew again by running another Quick Test Page.
This procedure may take two or three attempts before you get satisfactory results.
7.
When you have the correct adjustment, gently tighten the printhead mounting screws being
careful not to move the printhead assembly.
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Repair information