TM 1–1520–238–T–3
21–4
Change 4
21–5 SIGNAL NAME:
VIDEO RECORDER IS STOPPED (ACY) VCR STOPPED (ACZ)
MEMORY LOCATION: 002132
MEMORY DATA BIT(S):
6
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates video recorder is stopped and beginning of tape (BOT) is displayed
on HOD.
REMARKS: From video recorder through DASEC to FCC.
PASS:
If fifth digit on HOD is 0, 1, 4, or 5, go to paragraph 21–6.
FAIL: Location of fault: video recorder control panel, wiring from video recorder control panel to
DASEC, DASEC. Troubleshoot wiring to isolate fault (TM 11–1520–238–23–2).
21–6 SIGNAL NAME:
VIDEO RECORDER IS STOPPED (ACY) VCR STOP CMD (ACZ)
MEMORY LOCATION: 000562
MEMORY DATA BIT(S):
13
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates video recorder is stopped as directed by video recorder control panel.
REMARKS: From FCC through CPG MRTU Type III to video recorder control panel.
PASS:
If third digit displayed on HOD is 0, 2, 4, or 6, go to paragraph 21–9.
FAIL: Location of fault: CPG MRTU Type III, wiring from CPG MRTU Type III to video recorder control
panel, video recorder control panel, video recorder. Troubleshoot wiring to isolate fault
(TM 11–1520–238–23–2).
21–7 SIGNAL NAME:
VIDEO RECORDER CONTROL PANEL RECORD MODE (ACY)
VCR RECORD IND (ACZ)
MEMORY LOCATION: 000440
MEMORY DATA BIT(S):
8
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates video control panel record mode is selected.
REMARKS: From video recorder control panel through CPG MRTU Type III to FCC.
PASS:
If fourth digit displayed on HOD is 0, 1, 2, or 3, go to paragraph 21–8.
FAIL: Location of fault: video recorder control panel, wiring from video recorder control panel to CPG
MRTU Type III, CPG MRTU Type III. Troubleshoot wiring to isolate fault
(TM 11–1520–238–23–2).
21–8 SIGNAL NAME:
VIDEO RECORDER IS RECORDING (ACY) VCR RECORD CMD (ACZ)
MEMORY LOCATION: 000562
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates video recorder is recording as directed by video recorder control
panel.
REMARKS: From FCC through CPG MRTU Type III to video recorder control panel.
PASS:
Location of fault if second digit displayed on HOD is 0, 1, 2, or 3, go to paragraph 21–9.
FAIL: Location of fault: CPG MRTU Type III, wiring from CPG MRTU Type III to video recorder control
panel, video recorder. Troubleshoot wiring to isolate fault (TM 11–1520–238–23–2).
