TM 1–1520–238–T–3
Change 4
8–17
8–33 SIGNAL NAME:
RHE STATUS WORD TERMINAL FLAG (ACY) RHE RECEIVE MSG (ACZ)
MEMORY LOCATION: 001340
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates an error has been detected by RHE DMA controller.
REMARKS: From RHE to FCC.
PASS:
If first digit displayed on HOD is 0, 2, 4, or 6, go to paragraph 8–41.
FAIL: Location of fault: go to paragraph 8–34.
8–34 SIGNAL NAME:
RHE STATUS WORD CHECKSUM ERROR
MEMORY LOCATION: 001340
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of RHE PROM.
REMARKS: From RHE to FCC.
PASS:
If first digit displayed on HOD is 0, 1, 2, or 3, go to paragraph 8–35.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–35 SIGNAL NAME:
RHE STATUS WORD SUBSYSTEM BUSY
MEMORY LOCATION: 001340
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Busy indicates a full 25 HZ processing frame has not been completed.
REMARKS: From RHE to FCC.
PASS:
If second digit displayed on HOD is 0, 2, 4, or 6, go to paragraph 8–36.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–36 SIGNAL NAME:
RHE STATUS MESSAGE SEQUENCE ERROR
MEMORY LOCATION: 001340
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates that all transmit and receive messages are not transferred within any
25 HZ processing frame.
REMARKS: From RHE to FCC.
PASS:
If second digit displayed on HOD is 0, 1, 4, or 5, go to paragraph 8–37.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
8–37 SIGNAL NAME:
RHE STATUS FIRE INTERLOCK
MEMORY LOCATION: 001340
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates a fire interlock hangup is detected.
REMARKS: From RHE to FCC.
PASS:
If second digit displayed on HOD is 0, 1, 2, or 3, go to paragraph 8–38.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
