HP Color LaserJet Enterprise Flow M776z All-In-One Laser Printer - Manual (Page 296)

Improve scan image quality
Try the following basic solutions to improve scanned image quality.
● Check the scanner glass for dirt and smudges
● Check the resolution settings
● Check the color settings
● Check the image-adjustment settings
● Optimize scan quality for text or pictures
● Check the output-quality settings
● Use the flatbed scanner rather than the document feeder.
● Use high-quality originals.
● When using the document feeder, load the original document into the feeder correctly, using the paper
guides, to avoid unclear or skewed images.
If the problem still exists, try these additional solutions. If they do not fix the problem, see “Improve print quality”
for further solutions.
Check the scanner glass for dirt and smudges
Over time, specks of debris might collect on the scanner glass and white plastic backing, which can affect
performance. Use the following procedure to clean the scanner if the printed pages have streaks, unwanted
lines, black dots, poor print quality, or unclear text.
1. Press the power button to turn the printer off, and
then disconnect the power cable from the electrical
outlet.
2. Open the scanner lid.
282 Chapter 9 Solve problems ENWW