PS Engineering
PMA7000BT Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-780-0204
Page 2-2
Rev. 1, July 2015
If stereo music fidelity is not desired, consider purchasing the PMA7000M BT, P/N 050-781-0604, for
existing mono installations. No rewiring is required and the installation is plug-and-play.
2.3.1.3
Stereo PMA7000BT installations into monaural PMA6000, PMA6000M.
Installations replacing PMA6000 or PMA6000M require re-wiring of the top connector to accommodate
the stereo configuration. See appendixes for detailed interconnect information.
2.3.1.4
Existing KMA-24 Installation
If the installation replaces a KMA-24 (series -01, -02 or -03), the existing 44 pin connector can be used for
the bottom connector of the PMA7000BT tray as is, providing it is properly installed and wired. If the
KMA 24 installation includes “External Speaker” or Internal Speaker” connections to J1 Pins X and U r
e-
spectively), these will have to be disconnected to avoid interference with the Unswitched inputs #3 and #4.
No other changes are required except for external marker lights (see Section 3.7.2 for details). The "key" in
the existing connector must be located between pins 7 and 8. This connector will be used in the bottom
connector position. (See Appendix for complete wiring harness details.)
The existing ground bus may be reused for radio shield connections, if it was constructed so it can be relo-
cated to the PMA7000BT tray.
2.3.2
Unit Installation
Remove
the existing audio panel by turning the 3/32” hex head screw counterclockwise while pulling ge
n-
tly on the bezel. Do not try to back the unit out with the locking screw, as damage will occur.
Figure 2-1 Mounting Rod Location
To install the PMA7000BT, gently slide the unit into the mounting rack until the hold-down screw is en-
gaged. While applying gentle pressure to the face of the unit, tighten the 3/32" hex-head in the center of the
unit until it is secure. DO NOT OVER TIGHTEN.
2.4
New Installation
The following sections detail installation instructions for a new audio panel installation, or installation other
than a direct replacement.
2.4.1
Cooling Requirements
Forced air-cooling of the PMA7000BT is not required. However, the units should be kept away from heat
producing sources (i.e. defrost or heater ducts, dropping resistors, heat producing avionics) without ade-
quate cooling air provided.
2.4.2
Mounting Requirements
The PMA7000BT must be rigidly mounted to the instrument panel of the aircraft structure and within view
and reach of the pilot position(s). Installation must comply with FAA Advisory Circular AC 43.13-2B. The
unit may be mounted in any area where adequate clearance for the unit and associated wiring bundle exist.
Avoid installing the unit close to high current devices or systems with high-voltage pulse type outputs, such
as DME or transponders. Avoid running the interconnecting bundles near any high current wires.
Mounting Rod