TM 1–1520–238–T–3
Change 4
8–223
8–843 SIGNAL NAME:
LCHR3 REMOTE SEEKER EL (ACY) P3 1ST TRKG MSLEL (ACZ)
MEMORY LOCATION: 001775
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD; memory location response should indicate negative (sixth digit =1) when
the seeker is down and positive (sixth digit=0) when seeker is up.
SIGNAL FUNCTION:
Provides selected analog signal to FCC.
REMARKS: From launcher through right inboard MRTU Type II to FCC.
PASS:
If CONDITION corresponds to correct response, go to paragraph 8–844.
FAIL: Location of fault: right inboard launcher, wiring from right inboard launcher to right inboard
MRTU Type II, right inboard MRTU Type II. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
8–844 SIGNAL NAME:
LCHR3 REMOTE SEEKER EL (ACY) P3 RMT SKREL CMD (ACZ)
MEMORY LOCATION: 002013
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD; memory location response should indicate negative (sixth digit =1) when
the seeker is down and positive (sixth digit=0) when seeker is up.
SIGNAL FUNCTION:
Selected missile analog signal from FCC.
REMARKS: From FCC through right inboard MRTU Type II to launcher.
PASS:
Troubleshoot wiring from remote controlled circuit breaker (RCCB) to ECSP, ECSP to isolate
fault (TM 9–1427–475–20).
FAIL: Location of fault: right inboard MRTU Type II, wiring from right inboard MRTU Type II to FCC,
FCC. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
8–845 SIGNAL NAME:
P4 LAUNCHER PRESENT (ACY) L4 PRESENT (ACZ)
MEMORY LOCATION: 001344
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates presence or absence of launcher.
REMARKS: From RHE to FCC.
PASS:
If third digit on HOD is 2, 3, 6, or 7, go to paragraph 8–846.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–846 SIGNAL NAME:
P4 LAUNCHER SAFE (ACY) L4 SAFE (ACZ)
MEMORY LOCATION: 001344
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates to operator when a remote safe condition exists at launcher.
REMARKS: From RHE to FCC.
PASS:
If second digit on HOD is 0, go to paragraph 8–847.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
