
6-12
Phaser 600 Color Printer
6
Troubleshooting
The print appears as jagged swaths (bi-directional misalignment)
In this error the printing down the page has a jagged appearance (each swath is
offset slightly from the previous swath) or a portion of the print is
bi-directionally misaligned while other portions are correct.
1.
The linear encoder (dot clock) strip is dirty. Lint or some other
contaminant is occluding the strip and causing the printhead to
misread its position. Carefully, clean the strip with a water-moistened
cloth and allow the strip to dry.
2.
Check the printhead-to-drum spacing (tailpiece adjustment) for
proper operation and adjustment. See Chapter 9,
“Printhead-to-media adjustment (tailpiece adjustment)” on page 9-15.
3.
Also check the printer’s bi-directional alignment as explained in the
Chapter 9 topic “Bi-directional print convergence” on page 9-21.
Ensure that the convergence is consistent from the top of the print to
the bottom. If its not, the print may be slipping in the clamp.
The image is printed skewed on the paper
1.
The paper did not get clamped squarely on the paper clamp, or it
slipped out of the clamp. Clean the paper clamp.
2.
Clean the paper feed rollers. Use an alcohol-dampened, lint-free cloth.
3.
Ensure that the paper is properly loaded. During handfeeding, ensure
that the paper feeds squarely into the printer's paper path.
4.
Ensure that the paper is square-cut; some papers are not.
In a swath's vertical row of dots, one dot is offset from the others
1.
Clean the printhead. Paper fibers on the printhead face may be
deflecting a nozzle's jetted ink from its proper flight path.
Streaks or lines in the print parallel to the direction of paper travel
1.
Check and clean the back tension blade, paper clamp and bail rollers.
2.
Check the fuser and oiler wheel for proper operation.
3.
Replace the engine control board.
4.
The X-axis drive is not functioning correctly. If the X-axis drive does
not slew the printhead smoothly and evenly during printing, vertical
lines appear in the print. Replace the X-axis drive, if indicated.
5.
Replace the X-axis drive assembly.