Denon AVR-S660H 5.2-Channel Network A/V Receiver - Manual (Page 205)

Resetting factory settings
If the indicators are incorrect or the unit cannot be operated, restarting the unit may improve the problem. We recommend restarting the unit before
returning the settings to the default settings. ( v p. 186)
If the operations are not improved by restarting the unit, follow the steps below.
Various settings are reset to the factory default values. Make settings again.
.
X
TUNE +
TUNE –
1
Turn off the power using X .
2
Press X while simultaneously pressing TUNE + and
TUNE –.
3
Remove your fingers from the two buttons when
“Initialized” appears on the display.
0
Before returning the settings to the default settings, use the “Save & Load” function
from the menu to save and restore the details of various settings configured on the
unit. ( v p. 181)
0
You can also reset all settings to the factory defaults using “Reset” - “All Settings”
in the menu. ( v p. 182)
Contents Connections Playback Settings Tips Appendix
205
Front panel Display Rear panel Remote Index