L-3 TECHNOLOGIES ESI-500, Pilot'S Manual

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ESI-500
Pilot’s Guide 4-3
Messages and Indications
Table 4-1: Indications and Display Conditions
CONDITION CAUSE/CORRECTIVE ACTION
When the unit is set to
display GPS Navigation.
The DTK value is (---)
with amber text and a
red X over the deviation
scale.
GPS data is missing or failed.
1. Cycle power to the system.
2. Check cockpit instrumentation, if
the track data is missing, a problem
may exist with the navigation
device.
When the unit is set to
display VOR/ILS or GPS
Navigation.
The CRS value is (---)
with amber text and a
red X over the deviation
scale.
Navigation data is missing or failed.
1. Cycle power to the system.
2. Check cockpit instrumentation,
if the course data is missing,
a problem may exist with the
navigation device.
When the unit is set to
display VOR/ILS Naviga-
tion and a red X over the
deviation scales.
VLOC data is missing or failed.
1. Cycle power to the system.
2. Check cockpit instrumentation,
if the VLOC data is missing,
a problem may exist with the
navigation device.
Vertical Speed readout
missing.
Vertical speed data is removed or
missing from the screen.
1. The air data sensor may need
to warm up. Expect up to 3
minutes too warm up at colder
temperatures.
2. Cycle power to the system.
3. Readout may not be selected as a
configuration option.
4. If data continues to be missing,
replacement of indicator may be
required.
Nothing displayed on indi-
cator after power applied.
Check the following:
1. Press and hold the Menu button to
increase display brightness.
2. Verify Battery (BAT) Master switch
is on.
3. Check breakers and main avionics
switch.
4. The unit may have experienced a
hardware failure. Replacement of
indicator may be required