TM 1–1520–238–T–1
Change 5
1–15
1–5
FD/LS OPERATION – GENERAL (cont)
1–5
NOTE
The loss or significant reduction in the FCC
battery voltage could cause loss of all data in
random access memory (RAM), including
boresight correctors. If FCC battery voltage is
suspect, refer to TM 9-1230-476-20-2 (ACY). If
FCC LOAD (ACZ) or FCC LOAD FAIL , BST
DATA LOAD FAIL, INIT DATA LOAD FAIL
(ADD) message appears, perform boresight
editing procedures TM 9-1230-476-20-1
SYSTEM
CONTINUOUS
MESSAGE
MAINTENANCE
MESSAGE
GUN
GUN
BORESIGHT
NO-GO
GUN
BORESIGHT
NO-GO
RAM
CHECKSUM
PYLONS
PYLON
BORESIGHT
NO-GO
PYLON
BORESIGHT
NO-GO
RAM
CHECKSUM
TADS
TADS
BORESIGHT
NO-GO
TADS
BORESIGHT
NO-GO
RAM
CHECKSUM
PNVS
PNVS
BORESIGHT
NO-GO
PNVS
BORESIGHT
NO-GO
RAM
CHECKSUM
(7) Once a checksum error occurs, the boresight
failure message remains until the operator edits (or re-enters)
the boresight corrector from the aircraft log book for the
affected system(s), or reboresighting is accomplished.
1–6
OPERATOR APPLICATIONS FOR THE DEK (ADC) –
GENERAL.
a. General Procedures for Operating FD/LS.
