TM 1–1520–238–T–3
9–17
9–73 SIGNAL NAME:
PYLON 3 MRTU TYPE II SERIAL DIGITAL ERROR
MEMORY LOCATION: 002030
MEMORY DATA BIT(S):
10
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Monitors right inboard missile launcher.
REMARKS: From PYLON 3 MRTU Type II to FCC.
PASS:
If fourth digit on HOD is 0, replace FCC (TM 9–1230–476–20–1).
FAIL: Location of fault: go to Chapter 8, paragraph 8–589.
9–74 SIGNAL NAME:
PYLON 4 MRTU TYPE II STATUS WORD TERMINAL FLAG
MEMORY LOCATION: 002032
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates PASS or FAIL status of MRTU internal self–tests.
REMARKS: From PYLON 4 MRTU Type II to FCC.
PASS:
If first digit on HOD is 0, 2, 4, or 6, go to paragraph 9–82.
FAIL: Location of fault: go to paragraph 9–75.
9–75 SIGNAL NAME:
PYLON 4 MRTU TYPE II STATUS WORD BBC STATUS BIT
MEMORY LOCATION: 002032
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates self–test status of the BBC.
REMARKS: From PYLON 4 MRTU Type II to FCC.
PASS:
If first digit on HOD is 2 or 6, go to paragraph 9–76.
FAIL: Location of fault: MUX R PYL OUTBD circuit breaker, wiring from MUX R PYL OUTBD circuit
breaker to PYLON 4 MRTU, PYLON 4 MRTU. Troubleshoot wiring to isolate fault
(TM 9–1230–476–20–2).
9–76 SIGNAL NAME:
PYLON 4 MRTU TYPE II STATUS WORD OUTPUT CLEAR
MEMORY LOCATION: 002032
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates all MRTU outputs are cleared.
REMARKS: From PYLON 4 MRTU Type II to FCC.
PASS:
If first digit on HOD is 6, go to paragraph 9–77.
FAIL: Location of fault: MUX R PYL OUTBD circuit breaker, wiring from MUX R PYL OUTBD circuit
breaker to PYLON 4 MRTU, PYLON 4 MRTU. Troubleshoot wiring to isolate fault
(TM 9–1230–476–20–2).
9–77 SIGNAL NAME:
PYLON 4 MRTU TYPE II STATUS DISCRETE OUTPUT BIT
MEMORY LOCATION: 002032
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates self–test status of 5 VDC discrete outputs.
REMARKS: From PYLON 4 MRTU Type II to FCC.
PASS:
If second digit on HOD is 1, 3, 5, or 7, go to paragraph 9–78.
FAIL: Location of fault: MUX R PYL OUTBD circuit breaker, wiring from MUX R PYL OUTBD circuit
breaker to PYLON 4 MRTU, PYLON 4 MRTU. Troubleshoot wiring to isolate fault
(TM 9–1230–476–20–2).
