Lexmark C78x Service Manual page 263

10.
Leaving the pick arm down, lift the pick assembly and slide it toward the back of the printer, and drop it
through the holes located next to the brackets.
Installation notes:
1.
Put the new pick assembly into the printer.
•
Make sure the pick motor connector is placed through the holes before you insert the brackets.
•
Make sure the boss (A) on the pick arm is on top of the bellcrank so it can raise and lower the arm.
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Repair information