3-2
3
Operational Basics
CHAPTER
CRC Self-Test FAILED ■ Program CRC is not the
expected value. The “CRC
Self Test Failed” message
must not appear on power-
up if flight operations are
predicated on the use of the
SN3308 Navigational Display.
LAMP CHANGE SUGGESTED ■ Indicates that the internal
TEST FAILED xxx HOURS AGO lamp monitoring system has
detected a change in lamp
characteristics and a lamp
change is suggested within
the next 50 hours. This
message can only be
removed by replacement of
the lamp and resetting of
the lamp monitor by your
avionics shop.
TO PERFORM AUTOMATIC LAMP ■ The internal lamp
TEST, RUN FOR 2 MINUTES monitoring system
AT MAXIMUM BRIGHTNESS periodically tests the
lamp when running at full
brightness. This message
indicates lack of the test due
to operation below full
brightness for more than 10
hours. Operating the unit at
full brightness for at least
two minutes will allow the
test to complete and will
remove this message from
the next power-up cycle.
The following messages may be displayed on power-up and indicate
an abnormal situation. These messages will require one or more
acknowledgments by pressing the [ACK] softkey.
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