Service Manual
9-21
Checks and Adjustments
9
Bi-directional print convergence
Convergence is the key printhead “fine-tuning” adjustment. Convergence sets
the bidirectional printing alignment of the printer. Generally, you only make
convergence adjustments to compensate for any printhead print quality changes
that occur due to printhead aging. Convergence is an electronic adjustment; no
mechanical adjustments are required. You can individually set the convergence
used for standard mode printing and enhanced mode printing (set standard mode
printing convergence first). The default convergence values for new printheads
are:
■
Standard mode: 40
■
Enhanced mode: 40
1.
Ensure that the printhead drive voltages are correct as explained in the
earlier procedure,“Printhead drive voltage adjustment” on page 9-15.
2.
Scroll to and enter the Extended Service Support menu and then scroll
to the
Convergence Pattern
menu item. Press
to print a
convergence test pattern so you can determine if a convergence
change is required.
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