TM 1–1520–238–T–1
4–70
Change 5
4–10 PYLN SYSTEM – INTERACTIVE FD/LS
4–10
CHECK (cont)
TASK
RESULT
b. Obtain maintenance
menu by pressing
and releasing any
DEK key except
ENTER SPACE or
If FD/LS menus do not
appear on HOD (fig. 2–34),
refer to TM 9-1230-476-20-2
for troubleshooting the MUX
system.
SHIFT (ADC); or any
key on the CDU,
except SPC (ADD).
If any MUX NO–GO appears
on HOD, refer to
TM 9-1230-476-20-2 for
troubleshooting the MUX
system.
NOTE
RHE – RT BUS NO–GO RH FAB (ACZ) and/or
RHE – LT BUS NO–GO RH FAB (ACZ) will
appear if both pilot and CPG SAFE/ARM
switches are off.
c. On DEK, press and
release ()/0 and
VWX/8 keys (ADC).
On CDU, press and
release 0 and 8 keys
(ADD).
When MUX
COMMUNICATION GO
appears on HOD, go to next
step.
NOTE
The FCC software can detect a boresight
corrector loss for a weapon and/or sighting
system. Flight crew or maintenance
personnel are advised of the degraded
accuracy on the high–action–display.
Continuous and maintenance FD/LS
messages are displayed upon selection.
Pylons with external fuel tanks will not be
articulated.
