Maintaining your HCA-600
The HCA-600 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 plated 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 con-
necting plugs themselves. Make sure the unit is turned off while you do this.
Fuse
The HCA-600 has one external 4 ampere fuse which may blow as a result of an internal fault condition. This
protects the unit from possible damage to internal parts. Never replace this fuse with a larger value. Substi-
tution of a larger fuse may create serious stress or damage to internal parts and will void your warranty.
In Case of Trouble
If you suspect a problem with this unit, first recheck all your connections. If only one channel is inoperative,
the trouble may be caused by another component or even a defective hookup cable. However, if the same
channel is at fault when you reverse the Left and Right channel pair cables to your HCA-600 (turn it off
before moving wires), it may indicate trouble within the power amplifier itself. We suggest you contact your
authorized Parasound Dealer or Installer, or call Parasound Technical Service if you suspect a problem. We
may be able to suggest other diagnostic tests you can easily perform yourself and which will save you a lot
of trouble.
If it is determined that the HCA-600 should be returned to Parasound or an Authorized Warranty Center for
inspection and possible servicing, call for the location of a Warranty Center near you. If you choose to send
it to Parasound, you must call or write to obtain a Return Authorization number. You will be asked to repack
the unit in its original styrofoam packing and both of its cardboard cartons for proper protection in transit.
We will give you shipping instructions.
We must refuse units that arrive without the correct Return Authorization number, a suitable shipping carton
or that have evidence of improper internal packing. We cannot accept collect shipments. After repair under
warranty, the unit will be returned to you prepaid.
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