4.4 System menu
4.4.1 Volume Adjustment
(1) Press the [MENU Button] to enter the system menu interface, rotate the [OPERATE Button],
select the "Volume adjustment" module, press the [OPERATE Button] to confirm the selection.
Rotate the [OPERATE Button] to select the volume of the target area, and press the [OPERATE
Button] to confirm the selection. Continue to rotate the [OPERATE Button] to adjust the target
volume.
(2) Press【MENU Button】to save the current volume.
4.4.2 Fault state
Press the [MENU Button] to enter the system menu interface, rotate the [OPERATE Button],
select the "Fault status" module, and press the [OPERATE Button] to confirm the selection. View
equipment failure status.
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