TM 1–1520–238–T–3
Change 4
15–35
15–145 SIGNAL NAME:
FLIR POLARITY SEL TO TEU (ACY) FLIR PLRT CMD (ACZ)
MEMORY LOCATION: 001245
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
If first digit displayed on HOD is 0, 2, 4, or 6=BLK
If first digit displayed on HOD is 1, 3, 5, or 7=WHT
SIGNAL FUNCTION:
Indicates polarity selected.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If CONDITION corresponds to selected switch mode, replace TEU (TM 1–1270–476–20).
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU, FCC.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–146 SIGNAL NAME:
ORT ACM SWITCH (ACY) CPG ACM SW (ACZ)
MEMORY LOCATION: 000414
MEMORY DATA BIT(S):
5
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Enables ACM mode.
REMARKS: From ORT righthand grip through CPG MRTU Type III to FCC.
PASS:
If fifth digit on HOD is 1, 2, or 3, go to paragraph 15–147.
FAIL: Location of fault: ORT RH grip, ORT, wiring from ORT to CPG MRTU Type III, CPG MRTU
Type III. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–147 SIGNAL NAME:
FLIR ACM CONTROL (ACY) FLIR ACM CMD (ACZ)
MEMORY LOCATION: 000562
MEMORY DATA BIT(S):
10
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates automatic control module (ACM) selected.
REMARKS: From FCC through CPG MRTU Type III to TADS.
PASS:
If fourth digit on HOD is 1, 3, 5, or 7, go to paragraph 15–148.
FAIL: Location of fault: CPG MRTU Type III, wiring from CPG MRTU Type III to TADS turret, wiring
from TADS turret to NSA, NSA, ACM. Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–148 SIGNAL NAME:
ORT ACM ON TO TEU (ACY) CPG ACM SW TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
5
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected ACM.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If fifth digit on HOD is 4, 5, 6, or 7, troubleshoot ACM (TM 1–1270–476–T).
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–149 SIGNAL NAME:
DEK DATA VALID TO TEU (ACY) DEK DATA VALID CMD (ACZ)
MEMORY LOCATION: 001223
MEMORY DATA BIT(S):
4
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates valid keyboard entry.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If sixth digit on HOD is 1, go to paragraph 15–150.
FAIL: Location of fault: go to Chapter 17, paragraph 17–3.
