HP Laserjet p1606dn - Manual (Page 71)

Quiet mode settings
This product has a quiet mode that reduces noise during printing. When quiet mode is turned on, the
product prints at a slower speed.
NOTE: Quiet mode reduces the product print speed, which might improve print quality.
Follow these steps to enable quiet mode.
1. Open the printer properties, and then click the Device Settings tab.
2. Click the Enable option to turn on the Quiet Mode feature.
ENWW Quiet mode settings 59