TM 1–1520–238–T–3
5–6
Change 4
5–12 SIGNAL NAME:
CPG HAS GUN
MEMORY LOCATION: 001530
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates whether CPG has control of gun.
REMARKS: From GTCB through RH FAB MRTU Type I to FCC.
PASS:
If second digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 5–13.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to GTCB, GTCB, wiring from GTCB to RH
FAB MRTU Type I, RH FAB MRTU Type I. Troubleshoot wiring to isolate fault
(TM 9–1090–208–23–2).
5–13 SIGNAL NAME:
CPG SIGHT SELECT SW
MEMORY LOCATION: 001074
MEMORY DATA BIT(S):
4–6
(OCTAL)
CONDITION:
If the fifth digit displayed on HOD is 0 or 1=HMD/TADS (Chapter 15, paragraph 15–5)
If the fifth digit displayed on HOD is 2 or 3=TADS (Chapter 15, paragraph 15–5)
If the sixth digit displayed on HOD is 1=NVS (Chapter 10, paragraph 10–6)
If the sixth digit displayed on HOD is 1 and the fifth digit displayed on HOD is 2 or 3
=HMD (Chapter 7, paragraph 7–56)
SIGNAL FUNCTION:
Indicates position of CPG SIGHT SEL switch.
REMARKS: From CPG FCP through LH FAB MRTU Type I to FCC.
PASS:
If CONDITION displayed on HOD corresponds to CPG SIGHT SEL switch position, refer to
appropriate chapter and paragraph as listed under CONDITION.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
5–14 SIGNAL NAME:
CPG ACQ SELECT SW
MEMORY LOCATION: 001074
MEMORY DATA BIT(S):
7–9
(OCTAL)
CONDITION:
If the fourth digit displayed on HOD is 0 or 1=PHS
(Chapter 7, paragraph 7–38)
If the fourth digit displayed on HOD is2 or 3=FXD
(Chapter 10, paragraph 10–30)
If the fourth digit displayed on HOD is 4 or 5=TGT
(Chapter 16, paragraph 16–23)
If the fourth digit displayed on HOD is 6 or 7=NAV
(Chapter 20, paragraph 20–37)
If the fifth digit displayed on HOD is 1, 3, 5, or 7=GHS
(Chapter 7, paragraph 7–30)
If the fifth digit displayed on HOD is 1, 3, 5, or 7 and the fourth digit displayed on HOD
is 2 or 3=MSL SKR (Chapter 8, paragraph 8–10)
If the fifth digit displayed on HOD is 1, 3, 5, or 7 and the fourth digit displayed on HOD
is 4 or 5=TADS (Chapter 15, paragraph 15–6)
SIGNAL FUNCTION:
Enables cueing or slaving to selected CPG line of sight (LOS).
REMARKS: From CPG FCP through LH FAB MRTU Type I to FCC.
PASS:
If CONDITION displayed on HOD corresponds to selected CPG ACQ SEL switch position, go
to appropriate chapter and paragraph as listed under CONDITION.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
