MESSAGES
82005-PG-D
SANDEL SN3500 EHSI PILOT’S GUIDE
PAGE
10-5
Message Description
MAP
INCOMPATIBLE Indicates a mismatch between the
operating software version and the map
database. Check the Sandel website to
ensure that you have the latest versions
of operating software and database and
repeat the upload procedure. All other
functions of the SN3500 continue to
operate normally when the map has
failed.
NAV TUNED TO ILS
This message appears when pressing the
“NAV” switch on the SN3500 to select a
GPS and this action is overridden
because an ILS is tuned on NAV1 or
NAV2 and ILS lockout was enabled
during installation.
NAV1 TUNED ILS
Appears when VHF NAV1 is tuned to an
ILS frequency overriding and changing
the SN3500 current NAV selection and
ILS lockout was enabled during
installation.
NAV2 TUNED ILS
Appears when VHF NAV2 is tuned to an
ILS frequency overriding and changing
the SN3500 current NAV selection and
ILS lockout was enabled during
installation.
NOT IMPLEMENTED <BRG> key pushed with no source of
bearing available.
NOT INSTALLED
<TFC> or <WX> key pushed or TFC or
WX menu access attempted when
supporting equipment is not installed.
MESSAGES
82005-PG-D
SANDEL SN3500 EHSI PILOT’S GUIDE
PAGE
10-6
Message Description
OVERTEMP
SHTDWN
The internal temperature is continuously
monitored. An over temperature
condition will only occur if the cooling
airflow is obstructed. As the temperature
rises a warning will be issued prior to
shutdown. If shutdown occurs the
SN3500 will shut off the projection lamp
and continue operating, and resume
normal operation as the internal
temperature falls.
PARAM CRC FAULT
PARAM CRC is not the expected value.
The SN3500 installation settings have
become invalid. Parameter memory is
probably corrupt. This message must not
appear on power-up if flight operations
are predicated on the use of the SN3500
Navigational Display.
PGM CRC INVALID
Program CRC is not the expected value.
This message must not appear on power-
up if flight operations are predicated on
the use of the SN3500 Navigational
Display.
PWR SUPPLY FAIL
Internal power supply out of specification.
RELAY SENSE ERR
This message appears with the selected
relay feedback does not match.
Note 1:
The inverter failure messages will only appear if a
master or auxiliary inverter is installed.
Note 2:
Gyro Failures will only be annunciated if the installed
Gyro has a valid flag output. If the “Fluxgate Failed”
message appears check the Gyro circuit breaker, which
