Northern Airborne Technology AA83-001 rev.4.10 - Manual (Page 17)

SM09-2 Rev. 4.10 AA83-001 InterMUSIC™ Stereo Intercom System Manual
b)
Remove the protective plastic film from the black metal faceplate, and position it
with the appropriate legend orientation facing out. Secure with the mounting
screws provided.
Note: Ensure that the aircraft panel is tightly ‘sandwiched’ between the
AA83-001 and the faceplate.
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 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 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.
2.3.8 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.
2.3.7.1 Voltage/resistance
checks
Do not attach the AA83-001 until the following conditions are met.
Check the following:
a)
Check P101, pin <1> for +9 to +32 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.
Oct 20, 2004 Page 2-5
ENG-FORM: 805-0107.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.