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Troubleshooting
150 Phaser 7800 Color Printer
User Guide
Problem
Solution
Vertical White Lines or Streaks - One Color
Lines or streaks appear in one color of
your output.
1. Print the test pages to identify the affected color.
2. To clean the LED window for the affected color, pull out the cleaning rod
until it stops, then move it all the way in. Repeat three more times. Then
repeat this procedure for each affected color.
Notes:
To print procedures on resolving print-quality problems, touch Printer >
Tools > Troubleshooting > Troubleshoot Print Quality > Print.
To view a video on resolving this problem, touch Printer > Tools >
Troubleshooting > Resolve Problems. Then select a topic and touch the
video icon in the top bar to view the video.
Toner Missing or Easy to Rub Off
Toner appears to be missing from the
print or is easy to rub off.
1. Verify that the paper you are using is the correct type for the printer and
is loaded properly. For information on supported paper types and
weights, at the control panel, touch Printer > Print Reference Materials
> Paper Tips > Print to print the Paper Tips pages.
2. Perform the Calibrate Paper Type procedure. For details, see Optimizing
Printer Performance on page 29.
3. At the control panel, select a heavier paper.
Note: Papers from lightest to heaviest are:
For uncoated paper: Plain, Lightweight Cardstock, Cardstock,
Heavyweight Cardstock, and Extra Heavyweight Cardstock.
For coated paper: Lightweight Glossy Cardstock, Glossy Cardstock,
Heavyweight Glossy Cardstock, and Extra Heavyweight Glossy
Cardstock.