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CPG GUN ACTION | Up
TM-1-1520-238-T-3 Army Model AH-64 Helicopter (NSN
1520-01-106-9519) (EIC: RHA) Multiplex Read Codes Manual | Next
ORT WPN TRIG DET 1 TO TEU (ACY) ORT TRIG 1ST TST (ACZ) |
TM 1–1520–238–T–3
5–8
Change 4
5–20 SIGNAL NAME:
CPG WPN TRIG 2ND DETENT (ACY) CPG TRIG 2ND DTT (ACZ)
MEMORY LOCATION: 000436
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has pulled weapon trigger to second detent.
REMARKS: From CPG cyclic stick through CPG FCP and CPG MRTU Type III to FCC.
PASS:
If first digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 5–36.
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).
5–21 SIGNAL NAME:
ORT GUN TRIG TO TEU (ACY) ORT GUN TRIG TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates gun active (inhibit to other systems). This test performed during
TADS FD/LS maintenance test, on ground only, to allow TADS electronic unit
(TEU) to test ORT switches.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If fourth digit displayed on HOD is 0, 1, 4, or 5, go to paragraph 5–22.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
5–22 SIGNAL NAME:
ORT WPN TRIG 1ST DETENT (ACY) ORT TRIG 1ST DTT (ACZ)
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has pulled ORT weapon trigger to first detent.
REMARKS: From ORT left grip through CPG FCP and CPG MRTU Type III to FCC.
PASS:
If second digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 5–23.
FAIL: Location of fault: ORT, wiring from ORT 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).
5–23 SIGNAL NAME:
ORT WPN TRIG 2ND DETENT (ACY) ORT TRIG 2ND DTT (ACZ)
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has pulled ORT weapon trigger to second detent.
REMARKS: From ORT left grip through CPG FCP and CPG MRTU Type III to FCC.
PASS:
If second digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 5–24.
FAIL: Location of fault: ORT, wiring from ORT 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).
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