TM 1–1520–238–T–3
Change 3
7–5
7–13 SIGNAL NAME:
PILOT TEST COMPLETE
MEMORY LOCATION: 001571
MEMORY DATA BIT(S):
8
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors SEU test.
REMARKS: From pilot SEU to SEU through RH FAB MRTU Type I to FCC.
PASS:
If fourth digit on HOD is 4, 5, 6, or 7, go to paragraph 7–14.
FAIL: Location of fault: SEU, wiring from SEU to RH FAB MRTU Type I, RH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
7–14 SIGNAL NAME:
PLT IHADSS OPERATE CMD
MEMORY LOCATION: 001636
MEMORY DATA BIT(S):
4
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Activates pilot IHADSS processing.
REMARKS: From SEU through RH FAB MRTU Type I to FCC.
PASS:
If sixth digit on HOD is 1, go to paragraph 7–15.
FAIL: Location of fault: SEU, wiring from SEU to RH FAB MRTU Type I, RH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
7–15 SIGNAL NAME:
PLT IHADSS MODE CMD
MEMORY LOCATION: 001636
MEMORY DATA BIT(S):
9–11
(OCTAL)
CONDITION:
If fourth digit displayed on HOD is 0 and third digit is 2 =FILT A
If fourth digit displayed on HOD is 0 and third digit is 6 =FILT B
If fourth digit displayed on HOD is 1 and third digit is 2 =FILT C
If fourth digit displayed on HOD is 1 and third digit is 6 =BRSIT
If fourth digit displayed on HOD is 2 and third digit is 2 =BRSITSTORE.
If fourth digit displayed on HOD is 2 and third digit is 6=TEST
If fourth digit displayed on HOD is 3 and third digit is 2 =DIAGNOSTICS
SIGNAL FUNCTION:
Monitors pilot IHADSS mode.
REMARKS: From SEU through RH FAB MRTU Type I to FCC.
PASS:
If CONDITION corresponds to observed system status, go to paragraph 7–16.
FAIL: Location of fault: SEU, wiring from SEU to RH FAB MRTU Type I, RH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
7–16 SIGNAL NAME:
CPG IHADSS OPERATE CMD
MEMORY LOCATION: 001636
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Activates CPG IHADSS processing.
REMARKS: From SEU through RH FAB MRTU Type I to FCC.
PASS:
If third digit on HOD is 2, 3, 6, or 7, go to paragraph 7–17.
FAIL: Location of fault: SEU, wiring from SEU to RH FAB MRTU Type I, RH FAB MRTU Type I.
Troubleshoot wiring to isolate fault (TM 9–1270–221–23).
