Tektronix Phaser 600, Руководство по обслуживанию

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Service Manual 9-19
Checks and Adjustments
9
Drum alignment
Note This adjustment should only be made once the printhead voltage and
tailpiece adjustments have been correctly set.
1.
Load ANSI E-size, ISO A0, Arch E or JIS B1 paper into the printer.
2. Turn on the printer and allow the printer to reach its Ready state.
3. Through the front panel menu, scroll to the
Utilities
menu and
select the Test
Print
. Print the test print.
4.
Holding the test print so the writing is upside down, examine the
resulting test print. Compare the alignment marks at the far right and
far left of the print. If the drum is correctly aligned to the printhead
rails, the marks should be identical. If they are not, the drum is out of
alignment and must be corrected. (The test print may also reveal other
problems, such as poor convergence or printhead tilt, but these will be
corrected in later procedures.)
Figure 9-14 Checking drum alignment
Left end
of print Right end
of print
Compare alignment
marks
Drum alignment good
(convergence good too)
Left end of drum further
away from rails
Right end of drum further
away from rails
Drum alignment good
(convergence poor)
Drum alignment bad
(convergence unknown
until alignment fixed)
Drum alignment bad
(convergence unknown
until alignment fixed)
9482-103