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Operating the HCA-2200II
Power Switch
Press the upper side to turn the unit on; press the lower side to turn the unit off.
Standby/Operation LEDs
The red 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 protection relays disengage. At this time the
red LED will turn off and the green Operate LED will come on to signal normal operation is available. It
will also light up red whenever there is a short circuit or fault which triggers the protection circuits. When-
ever the red LED illuminates , no sound can be heard. If the red Standby LED lights up during operation, it
could indicate that more DC than its servos can handle is present at the input, an overload, short circuited
speaker line or possible internal fault. The protection circuits 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, you
should contact your dealer or Parasound for further advice.
Current Overload LEDs
The Current Overload LEDs for Right and Left channels will only illuminate if the unit is driven at 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. If they
are glowing often, please reduce the volume a little.
Overheat LEDs
The Overheat LEDs for Right and Left channels will only illuminate if the HCA-2200II starts to approach
its maximum safe operating temperature. Multiple temperature sensors continuously monitor the tempera-
ture of critical circuits which are subject to heat buildup under hard operating conditions. When these LEDs
come on, you must reduce the volume to permit the amplifier to
cool down, otherwise it may activate its thermal overload protection circuits, forcing you to wait for cool
down until the circuits reset.
“Breaking-in" the HCA-2200II
Like other great power amplifiers, the HCA-2200II requires at least 72 hours of continuous operation after
it is first turned on to sound its best. This gives the materials in various parts a chance to "form" so audio
signals achieve greater definition, smoothness and transparency.
Although the unit will sound spectacular when you first operate it, you will find it worthwhile to listen again
after a few days and you'll discover details in your music you may not have guessed were there.
Maintaining your HCA-2200II
The HCA-2200II requires no periodic maintenance and has no user serviceable parts inside. Do not remove
the top cover to avoid risk of electric shock. To keep it clean use only a soft cloth and never use any solvents
or abrasives. Fingerprints may be removed with a soft cloth moistened only with a few drops of water.
The amplifier has corrosion-free gold input jacks, but each year it is a good idea to twist the input plugs to
preserve perfect signal transfer by removing corrosion which might have accumulated on the connecting
plugs themselves. Make sure the unit is turned off while you do this.