Lexmark C780 Service Manual - Page 301
thumbscrew C should be facing the closest mounting beam.
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Page 301 highlights
3. Determine which printhead to remove. 5061 4. Align the printhead alignment assembly locating pin (A) with the hole in the printer frame and the attachment screw (B) with the screw hole (shown without the printhead for clarity). The adjustment thumbscrew (C) should be facing the closest mounting beam. Repair information 4-73
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Repair information
4-73
5061
3.
Determine which printhead to remove.
4.
Align the printhead alignment assembly locating pin (A) with the hole in the printer frame and the
attachment screw (B) with the screw hole (shown without the printhead for clarity). The adjustment
thumbscrew (C) should be facing the closest mounting beam.