TM 1-1520-238-10
Change 3
3-53
a. Display Check.
1. BRT – Rotate control fully clockwise. Observe
brightness change.
2. BRT – Adjust control for best visibility of display.
b. DNS Power On.
1. ADMIN – Press. Observe that the ADMIN Page
is displayed
2. PWR OFF – Press. Observe PWR OFF
changes to PWR ON for three seconds then
CDU display changes to NAV top level present
position page.
NOTE
If PWR OFF changes to PWR ––– or the
NAV top level present position page is
not displayed after approximately three
seconds, the DNS has failed.
If the RAM battery has failed, all naviga-
tion data in the SDCC memory is lost and
the following prompts are automatically
displayed on the FDLS page (fig 3-22).
DNS RAM ERASED
DNS IN REMEMBERED VEL
END OF LIST
c. FDLS Test.
1. FDLS – Press. Observe that the Continuous
Test Results – FDLS Page is displayed, as
shown in figure 3-20.
2. TEST – Press. Observe that NAV SYS TEST IN
PROG is displayed until the test is complete and
data is available for DNS test status.
3. If a GO message is displayed (fig 3-21), press
the NAV FAB.
NOTE
The heading, pitch and roll values are calcu-
lated and displayed approximately five sec-
onds after the GO message.
M01-218-6
TEST
NAV SYS TEST IN PROG
Figure 3-20.
FDLS Test in Progress (Normal Mode)
M01-218-7
TEST
CDU / DNS GO
END OF LIST
H
P
R
120.0
005.0
000.5
Figure 3-21.
FDLS Status Page – On Command
Test Results GO
d. Selecting MODE UTM or L/L and DSPL KM or
KTS.
If the operator desires to switch between MODE
UTM and MODE L/L or DSPL KM and DSPL KTS, per-
form the following:
1. ADMIN – Press. Observe that the ADMIN page
is displayed.
2. MODE UTM – Press to change to MODE L/L or
vice versa.
3. DSPL KM – Press to change to DSPL KTS or
vice versa.
e. Coordinate Entries for FPLN dictionary.
1. FPLN FAB – Press. Observe that FPLN dictio-
nary page is displayed.
