Northern Airborne Technology InterMUSIC AA83-100, Installation And Operation Manual

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AA83-100 InterMUSIC
™
Stereo Intercom Manual SM09-3 Rev. 4.00
c)
Rotate the inner and outer shafts of the ICS VOL / VOX potentiometer fully ccw.
The outer knob may be rotated by hand, but it may be necessary to temporarily
attach the inner ICS knob to facilitate this action. Align the white markers on the
knobs (part of 40-21-ICS3) to the LIVE position on the faceplate label. Using a
0.05" Allen key, tighten the knobs onto the potentiometer shafts.
d) Rotate the shaft of the MUSIC VOL potentiometer fully ccw. Align the white
marker on the knob (part of 40-18-MUS2) to the MIN position on the faceplate
label. Using a 0.05" Allen key, tighten the knob onto the potentiometer shaft.
Note : Make sure there is enough clearance between the concentric knobs so
that rotating one does not also move the other. A piece of paper makes a
good spacer when setting up the clearance.
2.3.6 Post-Installation Checks
If any preset requires adjustment, be sure this is carried out before the aircraft leaves,
and that the unit and its mating connector are secured before departure. Make all
required log book entries, electrical load, weight and balance amendments and other
paperwork as required by your local regulatory agency.
2.3.6.1 Voltage/resistance
checks
Do not attach the AA83-100 until the following conditions are met.
Check the following:
a) Check P101, pin <1> for +12 to +28 Vdc relative to ground.
b) Check P101, pin <16> for continuity to ground (less than 0.5
Ω
).
c) Check P101, pins <11> and <12> for continuity to ground (less than 0.5
Ω
) when
the relevant ICS switch is keyed.
d) Check all mic, phone, music, and key lines for shorts to ground or adjacent pins.
Check all key lines for correct operation.
2.3.6.2 Power On checks
Install the AA83-100 and power up the aircraft’s systems, and turn on the radios and
accessories required. Verify normal operation of all functions. Refer to Section 3 for
specific operation details.
a) Begin with only the pilot's headset installed, no hand mic. Check for correct radio
operation (both receive and transmit) and ICS operation. Check yoke (or cyclic)
switch action.
b) If there is a music source in the system turn it on and verify that music is heard in
all modes except PLT ISO. Check for proper mute operation.
Page 2-4 Mar 4, 2005
ENG-FORM: 805-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.