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DASEC STATUS WORD AD/DA BIT (ACY) ADA BIT (ACZ) | Up
TM-1-1520-238-T-3 Army Model AH-64 Helicopter (NSN
1520-01-106-9519) (EIC: RHA) Multiplex Read Codes Manual | Next
DASEC STATUS WORD FD/LS TEST |
TM 1–1520–238–T–3
3–10
Change 4
3–38 SIGNAL NAME:
DASEC STATUS WORD BIT PROCESSOR (ACY) CPU BIT STATUS (ACZ)
MEMORY LOCATION: 002222
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates ability of word bit processor to work properly.
REMARKS: From FCC to DASEC.
PASS:
If first digit displayed on HOD is 2 or 6, go to paragraph 3–39.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
3–39 SIGNAL NAME:
DASEC STATUS WORD OUTPUT CLEAR
MEMORY LOCATION: 002222
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of power up latch.
REMARKS: From FCC to DASEC.
PASS:
If first digit displayed on HOD is 6, go to paragraph 3–40.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
3–40 SIGNAL NAME:
DASEC STATUS WORD DISCRETE OUTPUT BIT (ACY) DO BIT (ACZ)
MEMORY LOCATION: 002222
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of 5 VDC and 28 VDC discretes.
REMARKS: From FCC to DASEC.
PASS:
If second digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 3–41.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
3–41 SIGNAL NAME:
DASEC STATUS WORD DC ANALOG OUTPUT BIT (ACY) DCO BIT (ACZ)
MEMORY LOCATION: 002222
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of DC analog circuits.
REMARKS: From FCC to DASEC.
PASS:
If second digit displayed on HOD is 3 or 7, go to paragraph 3–42.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
3–42 SIGNAL NAME:
DASEC STATUS WORD AD/DA BIT (ACY) ADA BIT (ACZ)
MEMORY LOCATION: 002222
MEMORY DATA BIT(S):
13
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of analog–to–digital and digital–to–analog circuits.
REMARKS: From FCC to DASEC.
PASS:
If third digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 3–43.
FAIL: Location of fault: replace DASEC (TM 1–1520–238–23).
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