JCP3-N01 Control Panel - NVG
Installation and Operating Manual
Rev A
Page 5
Allow 3” from the end of the shielded wiring to the shield termination to allow the connector hood to be easily installed.
Refer to the Interconnect drawing in Appendix A of this manual for shield termination details. Note that this unit has a
‘clamshell’ hood that is installed after the wiring is complete.
Maintain wire segregation and route wiring in accordance with the original aircraft manufacturer’s maintenance
instructions.
Refer to the Interconnect drawing for additional specifications. Check that the ground connection is clean and well
secured, and that it shares no path with any electrically noisy aircraft accessories such as blowers, turn-and-bank
instruments, or similar loads.
2.4.3
Mechanical Installation
The JCP3-N01 can be mounted in any attitude and location with adequate space for the front panel and sufficient
clearance for the connector and wiring harness. It requires no direct cooling.
2.4.4 Legend Replacement
The JCP3-N01 illuminated legends are field replaceable. For further information, refer to the
‘Legend Replacement’
document in Appendix A of this manual.
2.4.5
Post Installation Checks
2.4.
5
.1
Voltage/Resistance checks.
Do not attach this unit until the following conditions are met:
a)
Check P1
between
pin
s
1
and
9
for
13 Vdc
power.
b)
Check P1 pin 14 for +5 Vdc lights voltage or P1 pin 15 for +28 Vdc lights voltage.
c)
Check P1 pin 10 (Chassis ground) for continuity to ground (less than 0.5 Ω).
d)
Confirm P1 pin 13 (RESET INPUT) is connected to the Remote Audio Controller
P3 pin 13 (RESET OUTPUT)
e)
Check all pins for shorts to ground or adjacent pins.
2.4.
5
.2
Power on Checks.
Power up the aircraft’s systems and confirm normal operation of all functions of the JCP3-N01. Refer to
Section 3 (Operation) for specific operational details.
a) Begin with only the pilot’s headset attached. Confirm correct ICS and radio operation for both receive and
transmit. Check yoke or cyclic switch action. Check the radio selection and inputs. Do not proceed until the
radios are functioning correctly.
b) If there is a music source in the system, turn it on and check for proper mute operation.
c) Unusual buzzes, hums or other background audio are symptomatic of multiple grounds, or noisy external
systems such as blowers or pumps sharing wiring with the audio system. If a transmitter fails to key or
correctly modulate it is often the result of not connecting all required grounds to the radio or external audio
system.
d) Check the ICS operation and Emergency operation.
e) Plug in the co-pilot’s headset. Check for correct ICS operation. Check yoke or cyclic switch functions.
f) Plug in any remaining headsets, and check for correct ICS operation. Note that an incorrect cordset (drop cord)
or improper jack wiring may cause a wide range of problems, from loss of audio to a tone heard in the headset.
g) Check that all configurations settings are correct.
When all performance checks are satisfied, complete the necessary regulatory documentation before releasing the
aircraft for service. Refer to
Appendix B.
