TM 1–1520–238–T–3
15–30
Change 4
15–123 SIGNAL NAME:
DVO SEL TO TEU
MEMORY LOCATION: 001245
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates DVO selected.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If second digit on HOD is 1, 3, 5, or 7, go to paragraph 15–231.
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).
15–124 SIGNAL NAME:
TADS VIDEO SW
MEMORY LOCATION: 000412
MEMORY DATA BIT(S):
11
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected TADS video.
REMARKS: From ORT through CPG MRTU Type III to FCC.
PASS:
If third digit on HOD is 1, 2, or 3, go to paragraph 15–125.
FAIL: Location of fault: ORT, wiring from ORT to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–125 SIGNAL NAME:
CPG COLLECTIVE TADS PNVS SEL 1 (ACY) TADS PNVS SW1 (ACZ)
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
7
(BINARY)
CONDITION:
If the fifth digit displayed on HOD is 0, 2, 4, or 6=TADS
If the fifth digit displayed on HOD is 1, 3, 5, or 7=PNVS
SIGNAL FUNCTION:
Indicates CPG LOS selection.
REMARKS: From CPG collective NVS switch through CPG MRTU Type III to FCC.
PASS:
If fifth digit on HOD is 2, 4, or 6, go to paragraph 15–126.
FAIL: Location of fault: CPG collective NVS switch, wiring from CPG collective NVS switch to CPG
MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault
(TM 1–1520–238–T–7).
15–126 SIGNAL NAME:
CPG COLLECTIVE TADS PNVS SEL 2 (ACY) TADS PNVS SW2 (ACZ)
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
8
(BINARY)
CONDITION:
If fourth digit displayed on HOD is 0, 1, 2, or 3=PNVS
If fourth digit displayed on HOD is 4, 5, 6, or 7=TADS
SIGNAL FUNCTION:
Indicates CPG LOS selection.
REMARKS: From CPG collective NVS switch through CPG MRTU Type III to FCC.
PASS:
If fourth digit on HOD is 4, 5, 6, or 7, go to paragraph 15–127.
FAIL: Location of fault: CPG collective NVS switch, wiring from CPG collective NVS switch to CPG
MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault
(TM 1–1520–238–T–7).
