TM 1–1520–238–T–3
Change 4
8–285
8–1086 SIGNAL NAME:
LCHR4 CONTROL MSL AUTO AZ SIGNAL SELECT (ACY)
P4 AUTO AZSIG (ACZ)
MEMORY LOCATION: 001312
MEMORY DATA BIT(S):
6–9
(HEX)
CONDITION:
If the fourth digit displayed on HOD is 0=M1AZ
If the fourth digit displayed on HOD is 1=M2AZ
If the fourth digit displayed on HOD is 2=M3AZ
If the fourth digit displayed on HOD is 3=M4AZ
If the fourth digit displayed on HOD is 4=M1BIT4
If the fourth digit displayed on HOD is 5=M2BIT4
If the fourth digit displayed on HOD is 6=M3BIT4
If the fourth digit displayed on HOD is 7=M4BIT4
If the fifth digit displayed on HOD is 1, 3, 5, or 7 and the fourth digit displayed on HOD
is 0=M1ID
If the fifth digit displayed on HOD is 1, 3, 5, or 7 and the fourth digit displayed on HOD
is 1=M2ID
If the fifth digit displayed on HOD is 1, 3, 5, or 7 and the fourth digit displayed on HOD
is 2=M3ID
If the fifth digit displayed on HOD is 1, 3, 5, or 7 and the fourth digit displayed on HOD
is 3=M4ID
SIGNAL FUNCTION:
Selects one of four missiles to be monitored for yaw gimbal angle (AZ), BIT 4
or missile identification on analog reply number four.
REMARKS: From RHE to ECSP to missile.
PASS:
If CONDITION corresponds to selected missile, go to paragraph 8–1087.
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).
8–1087 SIGNAL NAME:
LCHR4 AUTO SEEKER AZ (ACY) P4 2ND TRKG MSLAZ (ACZ)
MEMORY LOCATION: 001513
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 RHE.
REMARKS: From launcher to RHE.
PASS:
If CONDITION corresponds to correct response, go to paragraph 8–1088.
FAIL: Location of fault: right outboard launcher, wiring from right outboard launcher to RHE, RHE.
Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
8–1088 SIGNAL NAME:
LCHR4 AUTO SEEKER AZ (ACY) P4 2ND TRKG MSLAZ (ACZ)
MEMORY LOCATION: 002037
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 right outboard MRTU Type II to FCC.
PASS:
If CONDITION corresponds to correct response, go to paragraph 8–1089.
FAIL: Location of fault: right outboard launcher, wiring from right outboard launcher to right outboard
MRTU Type II, right outboard MRTU Type II. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
