TM 1–1520–238–T–3
Change 4
15–31
15–127 SIGNAL NAME:
TADS PILOT TAKEOVER TO TEU (ACY) TADS PRISLAVE CMD (ACZ)
MEMORY LOCATION: 001245
MEMORY DATA BIT(S):
8
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates pilot has selected TADS (PNVS backup).
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If fourth digit on HOD is 4, 5, 6, or 7, go to paragraph 15–128.
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).
15–128 SIGNAL NAME:
TADS SLAVED TO TEU (ACY) TADS SLAVE CMD (ACZ)
MEMORY LOCATION: 001245
MEMORY DATA BIT(S):
7
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates TADS is slaved to CPG LOS.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If fifth digit on HOD is 1, 3, 5, or 7, go to paragraph 15–129.
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).
15–129 SIGNAL NAME:
TADS VIDEO SELECT TO TEU (ACY) TADS VIDEO CMD (ACZ)
MEMORY LOCATION: 001245
MEMORY DATA BIT(S):
11
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected TADS video.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If third digit on HOD is 4, 5, 6, or 7, go to paragraph 15–130.
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).
15–130 SIGNAL NAME:
ORT PNVS VIDEO SEL TO TEU (ACY) PNVS VIDEO SW TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
4
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected PNVS video.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
Location of fault if sixth digit on HOD is 0: replace ORT (TM 1–1270–476–20).
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).
15–131 SIGNAL NAME:
FLIR SENSOR SEL (ACY) FLIR SELECT SW (ACZ)
MEMORY LOCATION: 000412
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Selects FLIR sensor.
REMARKS: From ORT lefthand grip through CPG MRTU Type III to FCC.
PASS:
If second digit on HOD is 1, 4, or 5, go to paragraph 15–132 .
FAIL: Location of fault: ORT lefthand grip, wiring from ORT to CPG MRTU Type III, CPG MRTU Type
III. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
