Operating Your HCA-806A
Power Switch
Manual Turn On
Press the upper side to turn the unit on manually; press the lower side to turn the unit off.
Automatic Turn On
When the power switch is in the off position, the power amplifier can be turned on with an external DC voltage applied at the DC trigger connector on the rear panel. (See above)
AC Line LED
The AC line LED on the front panel of your amplifier will illuminate whenever AC is present at the AC connector. This LED indicates that the AC cord is connected and power is applied to the amplifier.
Standby/Operation LEDs
The Standby LED will come on red whenever you first turn the unit on. It will light for about four to five seconds while the amplifier circuits are stabilizing before the six protection relays start to energize. At this time the red LED will turn off and the green Operate LED will come on to signal normal operation. It will also light up red whenever there is a short circuit or fault which triggers the protection circuits. Whenever the red LED illuminates, the unit will not pass a signal. If the red Standby LED lights up during operation it could indicate: 1.) that more DC is present than its servos can handle, 2.) a short circuited speaker line, or 3.) possible internal fault. Once the problem has been corrected, the protection circuits will automatically reset. Turn the unit off for at least 10 minutes while you check your connections, then try again. If the red LED continues to glow, contact your Dealer, Installer or Parasound Technical Service for further advice.
Current Overload LEDs
The current overload LEDs for channels 1 through 6 will only illuminate if the unit is driven continuously at or past its maximum current capacity. These LEDs will indicate overload of the power supply just before the onset of audible distortion. In virtually all imaginable listening situations, these LEDs will rarely illuminate.
Level Controls
Each channel has a separate input level control. The
Maintaining your HCA-806A
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