Solutions
If operations sounds are too loud, enable Quiet Mode. Enabling this feature may reduce printing speed.
Without Fax: Settings > General Settings > Printer Settings > Quiet Mode
Fax: Settings > General Settings > Fax Settings > Receive Settings > Print Settings > Quiet Mode
When staple finisher-P2 is installed and printing density is high, shift sort is being performed, or stapling is being performed, operation sounds may not be reduced due to operations to align misaligned paper, even if Quiet Mode is enabled. Additionally, the accuracy of the alignment of the ejected paper will be reduced.