TM 1–1520–238–T–3
15–44
Change 4
15–189 SIGNAL NAME:
DTV BRSIT COMPL (ACY) TV BST COMPLETE (ACZ)
MEMORY LOCATION: 001135
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates day television (DTV) auto boresight is complete.
REMARKS: From TEU through LH FAB MRTU Type I to FCC.
PASS:
If third digit on HOD is 2, 3, 6, or 7, go to paragraph 15–190.
FAIL: Location of fault: TEU, wiring from TEU to LH FAB MRTU Type I, LH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–190 SIGNAL NAME:
FLIR BRSIT COMPL
MEMORY LOCATION: 001135
MEMORY DATA BIT(S):
13
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates FLIR (night sensor) boresight is complete.
REMARKS: From TEU through LH FAB MRTU Type I to FCC.
PASS:
Location of fault if third digit on HOD is 1, 3, 5, or 7: replace boresight module
(TM 1–1270–476–20).
FAIL: Location of fault: TEU, wiring from TEU to LH FAB MRTU Type I, LH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–191 SIGNAL NAME:
LASER NOT CODED (ACY) LRFD NOT CODED (ACZ)
MEMORY LOCATION: 001135
MEMORY DATA BIT(S):
11
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates laser trigger has been pulled but no laser code conversions have
been entered.
REMARKS: From TEU through LH FAB MRTU Type I to FCC.
PASS:
If third digit is 4, 5, 6, or 7, go to paragraph 15–192.
FAIL: Location of fault: TEU, wiring from TEU to LH FAB MRTU Type I, LH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–192 SIGNAL NAME:
LT NOT CODED (ACY) LST NOT CODED (ACZ)
MEMORY LOCATION: 001135
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates laser tracker code conversions have not been entered.
REMARKS: From TEU through LH FAB MRTU Type I to FCC.
PASS:
If second digit on HOD is 1, 2, or 3, go to paragraph 15–193.
FAIL: Location of fault: TEU, wiring from TEU to LH FAB MRTU Type I, LH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–193 SIGNAL NAME:
LT CODE TO TEU (ACY) LST CODE CMD (ACZ)
MEMORY LOCATION: 001236
MEMORY DATA BIT(S):
4–19
(HEX)
CONDITION:
Refer to TRI–SERVICE encoding manual
SIGNAL FUNCTION:
Contains laser tracker information.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If hexadecimal corresponds to laser code conversions selected, go to paragraph 15–194.
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).
