Yamaha RX-V457 - Manual (Page 72)

68
EDITING SOUND FIELD PARAMETERS
5
Repeat steps 2 through 4 as necessary to
change other program parameters.
You cannot change parameter values when “MEMORY GUARD”
is set to ON. If you want to change the parameter values, set
“MEMORY GUARD” to OFF (see page 59).
■ Resetting parameters to the factory
presets
Use PARAM. INI (see page 59).
Note
Memory back-up
The memory back-up circuit prevents the stored data
from being lost even if this unit is set in the standby
mode, the power cord is disconnected from the AC
outlet, or the power supply is temporarily cut due to
power failure. However, if the power is cut for more
than one week, the parameter values will return to the
factory settings. If this happens, edit the parameter
value again.