TM 1–1520–238–T–3
Change 4
21–3
21–3 SIGNAL NAME:
VIDEO RECORDER CONTROL PANEL MODE TO VIDEO RECORDER (ACY)
VCR MODE CMD (ACZ)
MEMORY LOCATION: 000440
MEMORY DATA BIT(S):
4–7
(HEX)
CONDITION:
If the sixth digit displayed on HOD is 0 and the fifth digit is 0=STANDBY
If the sixth digit displayed on HOD is 0 and the fifth digit is 1=PLAY FAST FORWARD
If the sixth digit displayed on HOD is 0 and the fifth digit is 2=RECORD
If the sixth digit displayed on HOD is 0 and the fifth digit is 3=RECORD EVENT
MARKER
If the sixth digit displayed on HOD is 0 and the fifth digit is 4=REWIND
If the sixth digit displayed on HOD is 0 and the fifth digit is 6=PLAY REVERSE
If the sixth digit displayed on HOD is 1 and the fifth digit is 1=PLAY REVERSE FAST
If the sixth digit displayed on HOD is 1 and the fifth digit is 2=RECORD STANDBY
If the sixth digit displayed on HOD is 1 and the fifth digit is 4=PLAY FORWARD
If the sixth digit displayed on HOD is 1 and the fifth digit is 6=PLAY STILL
SIGNAL FUNCTION:
Selects video recorder mode.
REMARKS: From video recorder control panel through CPG MRTU Type III to FCC.
PASS:
If CONDITION corresponds to selected mode, go to paragraph 21–4.
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).
21–4 SIGNAL NAME:
VIDEO RECORDER MODE (ACY) VCR MODE CMD1 (ACZ)
MEMORY LOCATION: 002215
MEMORY DATA BIT(S):
12–15
(HEX)
CONDITION:
If third digit is 0 and the second digit is 1=STANDBY
If third digit is 0 and the second digit is 3=PLAY FAST FORWARD
If third digit is 0 and the second digit is 5=RECORD
If third digit is 0 and the second digit is 7=RECORD EVENT MARKER
If third digit is 1 and the second digit is 1=REWIND
If third digit is 1 and the second digit is 5=PLAY REVERSE
If third digit is 2 and the second digit is 2=PLAY REVERSE FAST
If third digit is 2 and the second digit is 4=RECORD STANDBY
If third digit is 3 and the second digit is 0=PLAY FORWARD
If third digit is 3 and the second digit is 4=PLAY STILL
SIGNAL FUNCTION:
Identifies video recorder mode.
REMARKS: From FCC through digital automatic stabilization equipment computer (DASEC) MRTU to
video recorder.
PASS:
If CONDITION corresponds to selected mode, go to failure symptom index and next failure
paragraph.
FAIL: Location of fault: DASEC, wiring from DASEC to video recorder, video recorder. Troubleshoot
wiring to isolate fault (TM 11–1520–238–23–2).
