TM 1–1520–238–T–3
Change 4
15–43
15–184 SIGNAL NAME:
THUMB AZIMUTH RATE TO TEU (ACY) ORT MAN AZ CMD (ACZ)
MEMORY LOCATION: 001241
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing azimuth; memory location response should increase
when azimuth increases and decrease when azimuth decreases.
SIGNAL FUNCTION:
Contains azimuth slew rate information.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If CONDITION corresponds to correct azimuth data, go to paragraph 15–185.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–185 SIGNAL NAME:
ORT ADJ B
MEMORY LOCATION: 000430
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing azimuth; memory location response should increase
when azimuth increases and decrease when azimuth decreases.
SIGNAL FUNCTION:
Indicates azimuth (AZ) setting for out–front boresighting.
REMARKS: From ORT through CPG MRTU Type III to FCC.
PASS:
If CONDITION corresponds to correct azimuth data, go to paragraph 15–186.
FAIL: Location of fault: ORT, wiring from ORT to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–186 SIGNAL NAME:
ADJ B TO TEU (ACY) B ADJ CMD (ACZ)
MEMORY LOCATION: 001242
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing azimuth; memory location response should increase
when azimuth increases and decrease when azimuth decreases.
SIGNAL FUNCTION:
Indicates azimuth setting for out–front boresighting.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If CONDITION corresponds to correct azimuth data, go to paragraph 15–187.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–187 SIGNAL NAME:
BRSIT ENABLE TO TEU (ACY) BST ENABLE CMD (ACZ)
MEMORY LOCATION: 001244
MEMORY DATA BIT(S):
11
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected boresight mode.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If third digit on HOD is 4, 5, 6, or 7, go to paragraph 15–188.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–188 SIGNAL NAME:
TADS BRSIT TO TEU (ACY) TADS BST CMD (ACZ)
MEMORY LOCATION: 001245
MEMORY DATA BIT(S):
10
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates CPG has selected boresight mode.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If fourth digit on HOD is 1, 3, 5, or 7, go to paragraph 15–189.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
