Yamaha RX-V459 Owner's Manual page 69

Option menu 3 OPTION MENU
Use this menu to manually adjust the optional system parameters.
Parameter
A)DISPLAY SET
B)MEMORY GUARD
C)PARAM. INI
D)MULTI ZONE
Adjusts the brightness of the display.
Locks sound field program parameters and other "SET MENU" settings.
Initializes the parameters of a group of sound field programs.
Specifies the location of the speakers connected to the SPEAKERS B terminals.
Features
SET MENU
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