Epson Stylus Pro 7800 User Manual page 340

❏ Check the Paper Feed value. Reduce the value to improve
light banding, and increase it for dark banding. For Windows,
"Paper Configuration" on page 29. For Mac OS 9.x, see "Paper
Configuration" on page 113. For Mac OS X, see "Paper
Configuration" on page 177.
❏ Check the Ink check light. If necessary, replace ink cartridges.
See "Replacing Ink Cartridges" on page 285.
Vertical misalignment or banding
Try one or more of these solutions:
❏ For Windows, turn off the High Speed setting in the
Advanced menu. See "Making Advanced setting" on page 27.
For Mac OS 9.x, turn off the High Speed setting in the
Advanced dialog. See "Making Advanced setting" on page
111.
For Mac OS X, turn off the High Speed setting in the
Advanced Settings is selected in the Print Settings selected in
the Print dialog. See "Advanced Settings" on page 170.
❏ Run the Print Head Alignment utility. For Windows, see
"Aligning the print head" on page 71. For Mac OS 9.x, see
"Aligning the print head" on page 143. For Mac OS X, see
"Aligning the print head" on page 195.
Faint printout or gaps
Try one or more of these solutions:
❏ Make sure that the ink cartridges do not exceed the expiry
date. The expiry date is labeled on the outside of the ink
cartridge.
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Problem Solver