TM 1–1520–238–T–3
Change 4
8–313
8–1197 SIGNAL NAME:
ORT WEAPON TRIGGER DETENT 1 TO TEU (ACY)
ORT TRIG 1ST TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates that ORT trigger has been actioned to first detent.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If second digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 8–1198.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU, FCC.
Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
8–1198 SIGNAL NAME:
ORT WEAPON TRIGGER DETENT 2 TO TEU (ACY)
ORT TRIG 2ND TST (ACZ)
MEMORY LOCATION: 001252
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates that ORT trigger has been actioned to second detent.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If second digit displayed on HOD is 4, 5, 6, or 7, go to paragraph 8–1205.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU, FCC.
Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
8–1199 SIGNAL NAME:
MISSILE SEEKER ELEVATION (ACY) PRI MSL SKREL (ACZ)
MEMORY LOCATION: 001373
MEMORY DATA BIT(S):
4–19
(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 seeker elevation angle of prime missile to FCC for display.
REMARKS: From RHE to FCC.
PASS:
If CONDITION agrees with seeker elevation, go to paragraph 8–1200.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–1200 SIGNAL NAME:
MISSILE SEEKER AZIMUTH (ACY) PRI MSL SKRAZ (ACZ)
MEMORY LOCATION: 001374
MEMORY DATA BIT(S):
4–19
(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 seeker azimuth angle of prime missile to FCC for display.
REMARKS: From RHE to FCC.
PASS:
If CONDITION agrees with seeker azimuth, go to paragraph 8–1201.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–1201 SIGNAL NAME:
REMOTE SEEKER ELEVATION (ACY) REMOTE SKREL (ACZ)
MEMORY LOCATION: 001403
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
Monitor HOD; memory location response should indicate negative (sixth digit =1) when
seeker is down and positive (sixth digit=0) when seeker is up.
SIGNAL FUNCTION:
Analog command 1. Provides pitch gimbal commands to selected seekers or
BIT drive commands.
REMARKS: From RHE to launchers.
PASS:
If CONDITION agrees with seeker elevation, go to paragraph 8–1202.
FAIL: Location of fault: RHE, wiring from RHE to launchers, launcher. Troubleshoot wiring to isolate
fault (TM 9–1427–475–20).
