TM 1–1520–238–T–3
16–4
Change 4
16–8 SIGNAL NAME:
TADS POWER SWITCH
MEMORY LOCATION: 000436
MEMORY DATA BIT(S):
14, 15
(BINARY)
CONDITION:
If second digit displayed on HOD is 0 or 1=OFF
If second digit displayed on HOD is 4 or 5=FLIR OFF
If second digit displayed on HOD is 6 or 7=TADS
SIGNAL FUNCTION:
Applies power to target acquisition designation sight (TADS).
REMARKS: From CPG FCP through CPG MRTU Type III to FCC.
PASS:
If CONDITION corresponds to selected switch mode, go to Chapter 15, paragraph 15–4.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
16–9 SIGNAL NAME:
IHADSS POWER SWITCH (ACY) IHAD PWR SW 1 (ACZ)
MEMORY LOCATION: 000436
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Applies power to integrated helmet and display sight system (IHADSS).
REMARKS: From CPG FCP through CPG MRTU Type III to FCC.
PASS:
If first digit on HOD is 4, 5, 6, or 7, go to Chapter 7, paragraph 7–2.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
16–10 SIGNAL NAME:
MSL LOWER CHANNEL CODE SW
MEMORY LOCATION: 000437
MEMORY DATA BIT(S):
4–6
(OCTAL)
CONDITION:
If the fifth digit displayed on HOD is 0 or 1=H
If the fifth digit displayed on HOD is 2 or 3=G
If the fifth digit displayed on HOD is 4 or 5=F
If the fifth digit displayed on HOD is 6 or 7=E
If the sixth digit displayed on HOD is 1=D
If the sixth digit displayed on HOD is 1 and the fifth digit
displayed on HOD is 0 or 1=C
If the sixth digit displayed on HOD is 1 and the fifth digit
displayed on HOD is 2 or 3=B
If the sixth digit displayed on HOD is 1 and the fifth digit
displayed on HOD is 6 or 7=A
SIGNAL FUNCTION:
Selects missile code of lower channel.
REMARKS: From CPG FCP through CPG MRTU Type III to FCC.
PASS:
If CONDITION corresponds to the selected code mode, go to paragraph 16–14.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
16–11 SIGNAL NAME:
LASER MSL CCM SW (ACY) MSL CCM SW (ACZ)
MEMORY LOCATION: 000437
MEMORY DATA BIT(S):
7
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Prevents erratic missile operation due to jamming.
REMARKS: From CPG FCP through CPG MRTU Type III to FCC.
PASS:
If fifth digit on HOD is 0, 2, 4, or 5, go to Chapter 8, paragraph 8–1124.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
