TM 1–1520–238–T–3
8–90
Change 4
8–325 SIGNAL NAME:
LCHR1 REMOTE SEEKER AZ (ACY) P1 1ST TRKG MSLEL (ACZ)
MEMORY LOCATION: 001662
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 left and positive (sixth digit=0) when seeker is right.
SIGNAL FUNCTION:
Provides selected analog signal to FCC.
REMARKS: From launcher through left outboard MRTU Type II to FCC.
PASS:
If CONDITION corresponds to correct response, go to paragraph 8–326.
FAIL: Location of fault: left outboard launcher, wiring from left outboard launcher to left outboard
MRTU Type II, left outboard MRTU Type II. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
8–326 SIGNAL NAME:
LCHR1 REMOTE SEEKER AZ (ACY) P1 RMT SKRAZ CMD (ACZ)
MEMORY LOCATION: 001700
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 left and positive (sixth digit=0) when seeker is right.
SIGNAL FUNCTION:
Provides selected missile analog signal to launcher from FCC.
REMARKS: From FCC through left outboard MRTU Type II to launcher.
PASS:
If CONDITION corresponds to correct response, go to paragraph 8–327.
FAIL: Location of fault: left outboard MRTU Type II, wiring from left outboard MRTU Type II to FCC.
Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
8–327 SIGNAL NAME:
LCHR1 CONTROL MSL REMOTE EL SIGNAL SELECT (ACY)
P1 RMT ELSIG CMD (ACZ)
MEMORY LOCATION: 001301
MEMORY DATA BIT(S):
17–19
(OCTAL)
CONDITION:
If the first digit displayed on HOD is 0=M1AZ
If the first digit displayed on HOD is 1=M2AZ
If the first digit displayed on HOD is 2=M3AZ
If the first digit displayed on HOD is 3=M4AZ
If the first digit displayed on HOD is 4=M1BIT2
If the first digit displayed on HOD is 5=M2BIT2
If the first digit displayed on HOD is 6=M3BIT2
If the first digit displayed on HOD is 7=M4BIT2
SIGNAL FUNCTION:
Selects one of four missiles to be monitored for pitch gimbal angle or BIT 1
response on analog reply number one.
REMARKS: From RHE to ECSP to missile.
PASS:
If first digit on HOD corresponds to selected missile, go to paragraph 8–328.
FAIL: Location of fault: replace RHE, wiring from RHE to ECSP, ECSP, wiring from ECSP to missile,
missile. Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
8–328 SIGNAL NAME:
LCHR1 REMOTE SEEKER EL (ACY) P1 MSL TRKG EL CMD (ACZ)
MEMORY LOCATION: 001474
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 RHE.
REMARKS: From launcher to RHE.
PASS:
If CONDITION corresponds to correct response, go to paragraph 8–329.
FAIL: Location of fault: left outboard launcher, wiring from left outboard launcher to RHE, RHE.
Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
