![background image](https://i.printerdoc.net/HP LaserJet Pro MFP M521 series/en/HP LaserJet Pro MFP M521 series_en204.png)
Improve scan quality
●
Check the scanner glass for dirt and smudges
●
Clean the pickup rollers and separation pad in the document feeder
Improve scan quality
●
Check the scanner glass for dirt and smudges
●
Clean the pickup rollers and separation pad in the document feeder