Indicators - Alpine HDP-D90 Owner's Manual

Indicators

① Power and Protection Indicator
Within 2 seconds of booting, the indicator
light will show red;
In the protection state, the indicator light
shows red light;
When working normally, the indicator light
shows blue light;
When shutting down, the indicator light is
off.
7 EN
② Hi-Res Signal Indicator
When the optical fiber/coaxial input signal is
Hi-Res standard signal, the indicator light is
always on (red light);
When there is no Hi-Res standard signal for
analog input and optical/coaxial input
signal, the indicator light is off.
③ Internal Amplifier Indicator
When the Internal power amplifier is turned
on, the indicator light is always on (red
light);
When the Internal power amplifier is turned
off, the indicator light goes out.