BendixKing KLN 900 - Pilots Guide - Manual (Page 31)

3-4 Rev 2
3. Adjust the display brightness to the desired level by
rotating the power/brightness knob. Clockwise rota-
tion increases brightness and counterclockwise rota-
tion decreases brightness.
4. Verify that the data displayed on the left side of the
Self Test page is the same as is being displayed on
the appropriate equipment in the aircraft which is
interfaced to the KLN 900. If the KLN 900 is not con-
nected to any other equipment in the aircraft, you
may skip to step 5.
The distance field (DIS) always displays 34.5 NM (or
63.9 km). If the KLN 900 is interfaced to a compati-
ble indicator that displays DME distance, the indicator
should be displaying 34.5 nautical miles.
If the KLN 900 is interfaced with the left-right and up-
down deviation bar (D-Bar) of an HSI or CDI, the D-
Bar should be half scale to the right and the vertical
deviation bar should indicate half-scale deviation up.
In some Electronic Flight Information System (EFIS)
installations the D-bar may be deflected one third of
full scale. This is due to the different CDI scale factors
that are used. The TO/FROM indicator should be
showing FROM.
If the KLN 900 is interfaced with a NAV indicator such
that the KLN 900 can "read" the selected course from
the NAV indicator, then the Omni Bearing Selection
(OBS IN) field should display the same course as on
the NAV indicator.
The OBS OUT field always displays 315 degrees and
is only applicable when the KLN 900 is interfaced
with an HSI which has a driven course pointer capa-
ble of being driven by the KLN 900. This type of HSI
is normally found in jets and turboprops. If this type
of NAV indicator is interfaced to the KLN 900, the
course pointer on the NAV indicator should be driven
to 315 degrees and both the OBS IN and OBS OUT
fields should be displaying 315 degrees.
The Radio Magnetic Indicator (RMI) field always dis-
plays 130 degrees. If the KLN 900 is connected to a
compatible RMI in the aircraft, the RMI should indi-
cate a bearing to the station of 130 degrees.
If any of the above checks fail, do not use the associ-
ated equipment with the KLN 900.
5. If the KLN 900 has passed the internal self test, the
bottom left side of the Self Test page will display
ANNUN ON to indicate that the external annuncia-
tors, if installed, should all be illuminated. If instead,
a flashing TEST FAIL is displayed, recycle power to
the KLN 900. If the Self Test page still displays TEST
FAIL, the KLN 900 requires repair and should not be
used for navigation.