January 2010
3-11
Phaser 7760 Color Laser Printer
Initial Actions Before Troubleshooting
Image Quality
Revised
Streaks in Direction of Paper Travel
There are dark lines running along the page in the direction of paper travel from the Leading
edge to the Trailing edge (B-size print shown in Figure 5). The printer displays no error code.
Figure 5 Streaks in Direction of Paper Travel
NOTE: A-size prints are processed through the printer with the short edge of the print parallel
to the direction of the paper path.
B-size prints are processed through the printer with the long edge of the print parallel to the
paper path, making horizontal artifacts parallel to the long axis of the print.
1. Perform the Solid Fill Pages procedure (Printer Menu > Troubleshooting > Print Qual-
ity Problems > Solid Fill Pages). The printer prints 6 Solid Fill pages.
If the missing bands only occur in a single primary color,
• replace the Imaging Unit of the affected color Or
• swap the Imaging Units and perform another test print.
NOTE: Under some circumstances, streaking may occur in the margin of SRA3 -size
paper. This is due to the edges of the paper extending beyond the end of the Imag-
ing components. Print-quality in the margins of SRA3 paper is not guaranteed.
2. Print the repeating defects page. Do the lines/streaks align with any of the repeating
defect marks?
3. Inspect the Accumulator Belt Cleaner. Replace the Belt Cleaner if necessary.
4. Replace the Developer Housing Assembly, if the defect is in One Color only.
5. Perform the Remove Print Smears procedure (Printer Menu > Troubleshooting > Print
Quality Problems > Remove Print Smears). The printer prints 5 blank pages. If the
defect returns, replace the Fuser.
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