Xerox WorkCentre 7800 series, User Manual

Page: 262 / 304

Troubleshooting
262 WorkCentre 7800 Series Multifunction Printer
User Guide
Problem Solution
Colors Too Light or Too Dark
The print or color density is too light,
missing, or the background is foggy.
1. Verify that the paper you are using is the correct type for the printer and
is loaded properly. For details, see Supported Paper on page 48.
2. Verify that the paper loaded in the tray matches the paper type selected
at the control panel and in the print driver.
3. To print procedures on resolving print-quality problems, at the control
panel, press Machine Status . Then touch Machine Information >
Information Pages > Troubleshooting Print Quality Page > Print .
If the Color Reference page looks correct, the printer is printing properly.
Your application or incorrect settings in the print driver can be causing
the print-quality problems.
4. If the Color Reference page did not print correctly, perform the Calibrate
Color procedure. At the control panel, press
Machine Status
, then touch
Tools
>
Troubleshooting
>
Calibration
>
Print Calibration
>
Next
, then
follow the onscreen instructions.
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 printhead lenses 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. For details,
see Cleaning the Printhead Lenses on page 176.
Note: To print procedures on resolving print-quality problems, at the control
panel, press
Machine Status
. Then touch
Machine Information
>
Information Pages
>
Troubleshooting Print Quality Page
>
Print
.
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 details, see Supported Paper on page 48.
2. Perform the Calibrate Paper Type procedure. For details, see Optimizing
Printer Performance on page 39.
3. At the control panel, select a heavier paper.
Notes: Papers from lightest to heaviest are:
• For uncoated paper: Plain, Lightweight Cardstock, Cardstock, and
Heavyweight Cardstock
• For coated paper: Lightweight Glossy Cardstock, Glossy Cardstock, and
Heavyweight Glossy Cardstock.
•