MD Helicopters 369-500, Инструкция по техническому обслуживанию

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CSP-HMI-3
MD Helicopters, Inc
.
MAINTENANCE MANUAL
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97-02-00
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Copyright
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1999 − 2016 by MD Helicopters, Inc.
(a). Receiver select switch 1, selects the
NO. 1 RCVR AUDIO IN signal (input
on pin KK of the ICS control panel
connector) for interphone monitoring.
Select the appropriate customer
installed avionic equipment individu­
ally (positions 1 thru 5) and probe
pins KK, SS, PP, MM, and EE
respectively for corresponding avionic
ac signals.
(b). The receiver select switch labelled
AUX selects the AUX RCVR AUDIO
IN signal. Probe pin UU for corre­
sponding avionic ac signal.
(c). The receiver select switch labelled
NAV selects both the NAV 1 and NAV
2 RCVR AUDIO IN signals (pins VV
and WW, respectively), meaning that
both radios are monitored simulta­
neously (if installed). Select NAV and
probe pin VV and WW for corre­
sponding avionic ac signal.
(2). The transmitter select (rotary) switch
has five labelled switch positions.
(a). Position 1 selects the NO. 1 XMIT
CONTROL signal and routes it out
on pin X to the number 1 COMM
transmitter, and selects the NO. 1
XMIT AUDIO OUT signal and routes
it out on pin V to the same transmit­
ter for transmission. Select position 1
and probe pin X for a lo and, while
speaking into the mike, probe pin V
for corresponding avionic ac signal.
(b). Repeat step (a). for switch positions 2
thru 5 (if additional avionic equip­
ment is installed). Select the appro­
priate customer installed avionic
equipment individually (positions 2
thru 5) and probe pins T, N, J, and
BB for a lo and, while speaking into
the mike, probe pins R, L, F, and P
respectively for corresponding avionic
ac signal.
NOTE:
Consult the manufacturer's publication
(Ref. Sec. 01-00-00) for bench testing proce­
dures for the ICS control panel.
Table 101. Troubleshooting ICS System
Symptom Probable Cause Corrective Action
WARNING: Before removing or installing components connected to the electrical system, ensure that
all electrical power is OFF. If units are not immediately replaced, ensure that all electrical connectors
are suitably capped and stowed and all loose cable ends are properly insulated to prevent the
possibility of shorting. Serious injury or death could result from voltages present in the electrical
system.
NOTE:
The following general troubleshooting information also applies to other avionics installations that may be
in the helicopter, since a trouble in equipment in one installation that is commonly used by other installations
can cause a symptom with associated installations. Disregard information that pertains to equipment or instal-
lations that are not installed.
No audio reception in one channel,
radio good, other channels good,
second system good.
Defective ICS control panel. Repair or replace ICS control panel.
No intercom.
Defective headset. Replace headset.
Defective ICS control panel. Repair or replace ICS control panel.
No transmission, radio good,
second system good.
Defective headset. Replace headset.
Defective ICS control panel. Repair or replace ICS control panel.
NO ICS transmission, ICS control
panel good, second and third
systems good.
Broken interconnecting wiring. Repair broken wiring.