7
Front Panel
On / Off Switch
Powers the PD-4A On / Off when using AC Power.
Note: The On / Off Switch is not functional if the power input is DC.
AC In with built-in fuse
AC Inlet for connecting to suitable mains power outlet – 100-
240VAC. The socket contains a fuse holder with a 6.3A/250V fuse.
AC INPUT LED indicator
L (LEFT AC Input) / R (RIGHT AC Input)
•
Green:
Good AC Input and DC output power
•
Blinking Red:
AC Input failed (When input falls below 80±5VAC)
Cooling Fan
The PD-4A has two built-in cooling fans; please ensure that the two
fans are not blocked and the airflow is available.
Note: Fan starts when internal ambient temperature reaches 70
℃.
DC OUTPUT LED Indicators (1-4)
1~4 XLR DC output LED indicators
LED Indicator is
ON
during normal operation
LED Indicator is
OFF
if the output is overloaded or faulty
Power Source
Input Select
DC Outputs LED
Indicator 1~4
AC Input.
100~240VAC
DC Input
12V 300W (MAX)
Power
Switch
Power
Switch
AC Input
100~240VAC
AC Input
LED Indicator
Buzzer
On/Off
Cooling
Fan
Cooling
Fan
