Diamond DA 42 NG, Maintenance Manual

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AIRCRAFT
DA 42 NG AMM Indicating Systems
Doc # 7.02.15
Rev. 4
31-40-00
Page 3
15 Mar 2018
2. Description
Figure 2 shows the schematic diagram for the ICS. The ICS has these main components:
A. Primary Flight Display (PFD)
The PFD is a 10.4 in liquid crystal display. Bezels on the left and right side of the PFD have the
controls for the ICS. The lower edge of the PFD has 'softkeys'. The function of the softkeys relates
to the on-screen display and the display will show the function of the key.
The PFD shows the basic primary flight display plus a number of additional options that can
selected manually. Some other indications will be generated automatically for example, alert
captions.
The left side bezel has these controls:
)
NAV VOL/SQ knob. This controls the NAV audio level. Press the knob to toggle the ident filter
OFF/ON.
)
NAV frequency transfer key. Press this key to make the standby NAV frequency the active
frequency.
)
NAV knob. This control has a large outer knob and a smaller inner knob. Rotate these knobs
to select the NAV frequency. Rotate the large outer knob to select the MHz and the inner knob
to select the kHz. Pressing the smaller inner knob will toggle the tuning cursor between the
NAV1 and NAV2 frequency display.
)
HDG knob. You can manually select the heading with this control. Pressing this knob will cause
a heading window to momentarily appear to the left of the heading indicator. This window will
show the airplane heading in a digital display and the heading bug will align with the compass
lubber line.
)
ALT SEL knob. Sets the selected altitude in the window over the altimeter tape display. The
large outer knob sets the thousands indication and the inner knob sets the hundreds indication.
The right side bezel has these controls:
)
COM VOL/SQ knob. Controls the COM audio level. Press the knob to toggle the COM automatic
squelch ON/OFF.
)
COM frequency transfer key. Press this key momentarily to make the standby COM frequency
active. Press and hold this key to automatically make the emergency frequency (121.5 MHz)
the standby frequency.