Denon AVR-3310CI Service Manual page 51

2.5. VCR/DVR MONITOR OUT(S) Output NG
VCR/DVR MONITOR OUT(S) Output NG.
※ When checking operation,
select DVD for the function.
Input Input Input
CVBS S COMPONENT
No output No output
VCR : M
DVR : N
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AVR-3310CI/AVR-3310/AVR990/AVC-3310