TM 1–1520–238–T–3
3–4
Change 4
3–8 SIGNAL NAME:
DASEC STATUS WORD ASE BIT (ACY) DASE BIT STATUS (ACZ)
MEMORY LOCATION: 002077
MEMORY DATA BIT(S):
11
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates last FD/LS test ASE bit status.
REMARKS: From DASEC to FCC.
PASS:
If third digit displayed on HOD is 1, go to paragraph 3–9.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
3–9 SIGNAL NAME:
DASEC STATUS WORD SERIAL DIGITAL ERROR (ACY) S/D ERROR (ACZ)
MEMORY LOCATION: 002077
MEMORY DATA BIT(S):
10
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of heading attitude reference system (HARS) ability to
acknowledge whether an error has been flagged.
REMARKS: From DASEC to FCC.
PASS:
If fourth digit displayed on HOD is 0, 2, 4, or 6, go to paragraph 3–10.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
3–10 SIGNAL NAME:
DASEC STATUS WORD TERMINAL FLAG
MEMORY LOCATION: 002113
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of bits 16, 15, or 13.
REMARKS: From DASEC to FCC.
PASS:
If first digit displayed on HOD is 0, 2, 4, or 6, go to paragraph 3–11.
FAIL: Location of fault: go to paragraph 3–13.
3–11 SIGNAL NAME:
DASEC STATUS WORD BIT PROCESSOR (ACY) CPU BIT STATUS (ACZ)
MEMORY LOCATION: 002113
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates ability of word bit processor to work properly.
REMARKS: From DASEC to FCC.
PASS:
If first digit displayed on HOD is 2 or 6, go to paragraph 3–12.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
3–12 SIGNAL NAME:
DASEC STATUS WORD OUTPUT CLEAR
MEMORY LOCATION: 002113
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of power up latch.
REMARKS: From DASEC to FCC.
PASS:
If first digit displayed on HOD is 6, go to paragraph 3–13.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
