HP Color LaserJet Enterprise Multifunction M680 Printer series - Manual (Page 163)

1. From the Home screen on the product control panel, scroll to and touch the Device Maintenance button.
2. Touch Calibration/Cleaning , touch Cleaning Page , and then touch Print to print the page.
A Cleaning message displays on the product control panel. The cleaning process takes a few minutes to
complete. Do not turn the product off until the cleaning process has finished. When it is finished, discard
the printed page.
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 product off,
and then disconnect the power cable from the
electrical outlet.
2. Open the scanner lid.
ENWW Improve print quality 151