Tektronix Phaser 600, Руководство по обслуживанию

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9-22
Phaser 600 Color Printer
9
Checks and Adjustments
3. Examine the resulting print. With a magnifying lens, examine the
convergence test print; it shows a series of alignment patterns, each
indicates a slightly different alignment variation. Examine the printed
patterns until you find the ones revealing the correct alignment for
Standard and Enhanced mode printing. In the alignment patterns,
the line to check for alignment is the middle line of the set of three
vertical lines. If the drum is properly aligned and parallel to the
X-axis rails then the sets of vertical lines, for each sample convergence
setting, should be identical. If they are not, then the center line of each
set will “drift” as you examine the left most patters to the right most
patterns.
4. Under ordinary circumstances, the alignment patterns 40 should show
the best convergence. If the center bar is to the left of the top and
bottom bar, then the printhead is “fast.” If the center bar is to the right
of the top and bottom bar, then the printhead is “slow.” The final
value should be between 50 to 30. If it is outside this range, recheck
the printhead-to-media spacing. The printed alignment patterns
shift in
1
/
4
pixel increments.
5.
If the Standard Convergence values must be changed, scroll to the
Standard
Convergence
menu. Press the
Menu
button. The currently
set convergence value is displayed, for example:
Convergence:
40
. Use the arrow keys to set the displayed value to the desired value.
Press
Select
to saves the displayed value.
6. If the Enhanced Convergence value must be changed, scroll to the
Enhanced Convergence
menu. Press the
Menu
button. The
currently set convergence value is displayed, for example:
Convergence: 30
. Use the arrow keys to set the displayed value to
the desired value. Press
Select
to saves the displayed value.
7. Scroll back to
Convergence Pattern
menu and print another test
print to check the adjustment.
If the alignment does not remain consistent, then the
printhead-to-media spacing may not be correct or the head drive
voltages may be incorrect. Check, clean and adjust, if necessary.
Also try printing on thinner and thicker sheets of media to ensure the
tailpiece performs correctly.