TM 1–1520–238–T–3
7–4
Change 3
7–8 SIGNAL NAME:
IHADSS TIME DELAY 5
MEMORY LOCATION: 001566
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
HOD displays all zeros.
SIGNAL FUNCTION:
Monitors IHADSS response time delay.
REMARKS: From SEU through RH FAB MRTU Type I to FCC.
PASS:
If condition is met, go to paragraph 7–9.
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).
7–9 SIGNAL NAME:
IHADSS TIME DELAY 6
MEMORY LOCATION: 001567
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
HOD displays all zeros.
SIGNAL FUNCTION:
Monitors IHADSS response time delay.
REMARKS: From SEU through RH FAB MRTU Type I to FCC.
PASS:
If condition is met, go to paragraph 7–10.
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).
7–10 SIGNAL NAME:
PILOT SEU STATUS
MEMORY LOCATION: 001571
MEMORY DATA BIT(S):
7
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors SEU.
REMARKS: From pilot SEU to SEU through RH FAB MRTU Type I to FCC.
PASS:
If fifth digit on HOD is 0, 2, 4, or 6, go to paragraph 7–11.
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).
7–11 SIGNAL NAME:
CPG SEU STATUS
MEMORY LOCATION: 001571
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors SEU.
REMARKS: From SEU through RH FAB MRTU Type I to FCC.
PASS:
If second digit on HOD is 0, 1, 4, or 5, go to paragraph 7–12.
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).
7–12 SIGNAL NAME:
CPG TEST COMPLETE
MEMORY LOCATION: 001571
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors SEU test.
REMARKS: From SEU through RH FAB MRTU Type I to FCC.
PASS:
If second digit on HOD is 1, 3, 5, or 7, go to paragraph 7–13.
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).
