TM 1–1520–238–T–3
Change 4
12–7
12–19 SIGNAL NAME:
ORT RKT WAS TO TEU (ACY) ORT RKT WAS TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates ORT RKT WAS signal to TEU.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If first digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 12–20.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TADS electronic
unit (TEU), TEU. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
12–20 SIGNAL NAME:
ORT RKT TRIG TO TEU (ACY) ORT RKT TRIG TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
8
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has pulled ORT left handgrip weapon trigger switch.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If fourth digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 12–21.
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 1–1270–476–T).
12–21 SIGNAL NAME:
ORT WPN TRIG DET 1 TO TEU (ACY) ORT TRIG 1ST TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has pulled ORT left handgrip weapon trigger switch to 1st
detent.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If second digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 12–22.
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 1–1270–476–T).
12–22 SIGNAL NAME:
ORT WPN TRIG DET 2 TO TEU (ACY) ORT TRIG 2ND TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has pulled ORT left handgrip weapon trigger switch to 2nd
detent.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If second digit displayed on HOD is 4, 5, 6, or 7, go to failure symptom index and next failure
symptom paragraph.
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 1–1270–476–T).
