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located on the rear panel, so they can be set once and forgotten.
Maintaining your HCA-2003
To avoid risk of electric shock, never remove the top cover. Your HCA-2003 requires no periodic
maintenance and has no user serviceable parts inside. To keep it clean use only a soft cloth and never use
any solvents or abrasives. The exterior of the amplifier may be cleaned with a soft cloth moistened only
with water or Windex sprayed onto the cloth.
Fuse
The HCA-2003 has one external 15 ampere fuse that may blow as a result of an internal fault condition or
improper operation. This protects the unit from possible damage to internal parts. Never replace this
fuse with a larger value. Substitution 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 your HCA-2003, first turn the amp off and check all your connections.
The trouble may be caused by another component or even a defective hookup cable. If you are hearing
hum out of any of your speakers, turn off the amplifier and disconnect the inputs to it. If the hum goes
away, it is probably be caused by your processor or one of the source components connected to it.
Frequently hum in a home theater system is caused by a grounding problem with the cable TV system.
Contact your cable provider if necessary to make sure the cable feed into your house is properly
grounded. There are cable isolation devices available such as the Video Link #634 or the Mondial Magic
specifically designed to cure this problem. In rack mounted systems, ground loops and hum can
sometimes develop via the metal rack rails of the equipment rack. This problem can be solved with nylon
shoulder washers available from Middle Atlantic Products.
If you still suspect a problem with your amplifier, we suggest you contact your authorized Parasound
Dealer or Installer, or Parasound. We may be able to suggest other diagnostic tests you can easily
perform. If we determine that your HCA-2003 should be returned to Parasound for inspection and
possible servicing, you will need to obtain a Return Authorization number and repack the unit in its
original packing and both of its cardboard cartons for proper protection in transit. Units that arrive
improperly packed or without a Return Authorization number, will be refused. We cannot accept collect
shipments. After we repair the unit repair under warranty, it will be returned to you at no charge.
Notes: