TM 1–1520–238–T–3
Change 4
12–5
12–11 SIGNAL NAME:
CPG RKT ACTION
MEMORY LOCATION: 000437
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates whether CPG has actioned rockets.
REMARKS: From weapon action switch (ORT or cyclic) through CPG FCP and CPG MRTU Type III
to FCC.
PASS:
If second digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 12–12.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 9–1090–208–23–2).
12–12 SIGNAL NAME:
TADS RKT ACTION (ACY) ORT RKT ACTION (ACZ)
MEMORY LOCATION: 001555
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates ORT weapon action switch (WAS) is set to RKT.
REMARKS: From ORT left handgrip through RH FAB MRTU Type I to FCC.
PASS:
If second digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 12–13.
FAIL: Location of fault: ORT left handgrip, wiring from ORT to RH FAB MRTU Type I, RH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
12–13 SIGNAL NAME:
ORT RKT TRIG
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates whether CPG has pulled ORT left handgrip weapon trigger switch.
REMARKS: From ORT left handgrip through CPG FCP and CPG MRTU Type III to FCC.
PASS:
If second digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 12–14.
FAIL: Location of fault: ORT left handgrip, wiring from ORT left handgrip to CPG FCP, wiring from
CPG FCP to CPG MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault
(TM 1–1270–476–T).
12–14 SIGNAL NAME:
CPG RKT TRIG
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
13
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates whether CPG has pulled cyclic stick trigger switch.
REMARKS: From CPG cyclic stick trigger switch through CPG FCP through CPG MRTU Type III to
FCC.
PASS:
If third digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 12–15.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 9–1090–208–23–2).
