Troubleshooting guide

AUDIO INTERNATIONAL, INC. 10/97
6
Document #540056, Rev. IR, Model No.: PA-7500A
2.0 Installation
2.1 Prior to Installation
The PA-7500A is a simple module to use and install. All audio input and output
cables on the units should be twisted shielded pair (20 AWG minimum, 16 – 18
preferred) unless otherwise specified. The module must be attached to conform to
the standards designated by the customer, installing agency, and existing
conditions as to the unit location and type of installation. The following should
be carefully considered before installing:
2.1.1 Select a mounting location for the unit. For best results, the unit must be
located as close to source equipment as possible. Long low-level runs
may introduce noise into the audio signal. Allow a minimum of ½ inch air
space around the amplifier due to the amount of heat generated by the unit.
Refer to section 5.0 for unit dimensions and mounting hole locations.
2.1.2 Select a mounting location where 28 VDC power and audio signal has
been previously installed.
2.1.3 The purpose of the audio amplifier is to compensate for low level audio
signals and “amplify” them to a high level. The amplifier will be most
effective when the interior is thoroughly furnished and all pieces of
furniture are in place
2.2 Unpacking and Inspection
2.2.1 Carefully open the packaging and remove the Amplifier. Inspect the unit
for damage. Retain the packing materials and packing list. Verify that all
components have been included in the package. The components should
arrive in good condition. However, occasionally damage does occur in
shipping.
If damage has occurred, a claim must be filed with AI within 24 hours
after unpacking and a “Return Request Authorization Number” must be
obtained from AI. Refer to the front cover of this manual for address and
telephone number of the Audio International, Inc. authorized dealership.
Repackage the unit in its original packaging materials and return it to AI
following instructions given. If no return is necessary, retain the packing
materials for storage or reshipment if necessary.