TM 1–1520–238–T–3
Change 4
5–7
5–15 SIGNAL NAME:
CPG GUN ACTION
MEMORY LOCATION: 001075
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates whether CPG has actioned gun.
REMARKS: From CPG cyclic stick through CPG FCP and LH FAB MRTU Type I to FCC.
PASS:
If second digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 5–16.
FAIL: Location of fault: CPG cyclic stick, wiring from CPG cyclic stick to CPG FCP, CPG FCP, wiring
from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU Type I. Troubleshoot wiring to isolate
fault (TM 9–1090–208–23–2).
5–16 SIGNAL NAME:
CPG GUN FXD SW
MEMORY LOCATION: 000437
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Enables gun fixed mode of operation.
REMARKS: From pilot FCP, through CPG FCP, through CPG MRTU Type III to FCC.
PASS:
If third digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 5–17.
FAIL: Location of fault: pilot FCP, wiring from pilot FCP to CPG FCP, CPG FCP, wiring from CPG FCP
to CPG MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault
(TM 9–1230–476–20–2).
5–17 SIGNAL NAME:
CPG GUN NORM SW
MEMORY LOCATION: 000437
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Enables FCC control of gun.
REMARKS: From pilot FCP, through CPG FCP, through CPG MRTU Type III to FCC.
PASS:
If first digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 5–38.
FAIL: Location of fault: pilot FCP, wiring from pilot FCP to CPG FCP, CPG FCP, wiring from CPG FCP
to CPG MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault
(TM 9–1230–476–20–2).
5–18 SIGNAL NAME:
CPG GUN TRIG
MEMORY LOCATION: 001554
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates whether CPG has pulled the optical relay tube (ORT) weapon trigger
or cyclic stick trigger, with gun actioned.
REMARKS: From CPG FCP through RH FAB MRTU Type I to FCC.
PASS:
If first digit on HOD is 1, 3, 5, or 7, go to paragraph 5–19.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to RH FAB MRTU Type I, RH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1090–208–23–2).
5–19 SIGNAL NAME:
CPG WPN TRIG 1ST DETENT (ACY) CPG TRIG 1ST DTT (ACZ)
MEMORY LOCATION: 000436
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has pulled cyclic stick weapon trigger to first detent.
REMARKS: From CPG cyclic stick through CPG FCP and CPG MRTU Type III to FCC.
PASS:
If third digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 5–20.
FAIL: Location of fault: CPG cyclic stick, wiring from CPG cyclic stick to CPG FCP, 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).
