TM 1–1520–238–T–3
Change 4
16–11
16–31 SIGNAL NAME:
CPG GUN ACTION
MEMORY LOCATION: 001075
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has actioned gun.
REMARKS: From CPG FCP through LH FAB MRTU Type I to FCC.
PASS:
If second digit on HOD is 4, 5, 6, or 7, go to Chapter 5, 5–16.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
16–32 SIGNAL NAME:
PLT GUN ACTION
MEMORY LOCATION: 001075
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates pilot has actioned gun.
REMARKS: From CPG FCP through LH FAB MRTU Type I to FCC.
PASS:
If second digit on HOD is 2, 3, 6, or 7, go to Chapter 5, 5–31.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
16–33 SIGNAL NAME:
SQUAT SWITCH
MEMORY LOCATION: 001075
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates squat switch position.
REMARKS: From CPG FCP through LH FAB MRTU Type I to FCC.
PASS:
If second digit on HOD is 0, 2, 4, or 6 (indicates ground), go to failure symptom index and next
failure symptom.
FAIL: Location of fault: squat switch, wiring from squat switch to CPG FCP, CPG FCP, wiring from
CPG FCP to LH FAB MRTU Type I, LH FAB MRTU Type I. Troubleshoot wiring to isolate fault
(TM 9–1090–208–23–2).
16–34 SIGNAL NAME:
SYM GEN PWR SW
MEMORY LOCATION: 001075
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Applies power to symbol generator.
REMARKS: From CPG FCP through LH FAB MRTU Type I to FCC.
PASS:
If first digit on HOD is 4, 5, 6, or 7, refer to TM 11–1520–238–23.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
16–35 SIGNAL NAME:
LASER PWR SW (ACY) LRFD SW (ACZ)
MEMORY LOCATION: 001075
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Applies power to laser.
REMARKS: From CPG FCP through LH FAB MRTU Type I to FCC.
PASS:
If first digit on HOD is 2, 3, 6, or 7, go to Chapter 15, 15–158.
FAIL: Location of fault: CPG FCP, wiring from CPG FCP to LH FAB MRTU Type I, LH FAB MRTU
Type I. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
