Denon dvd-900 Service Manual page 19

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FLOW CHART NO.21
Audio is not outputted.
Set the disc on the disc tray and playback.
Are the analog audio signals outputted to each pin
of CN1601 on the AV CBA?
CN1601 16PIN AUDIO-L
CN1601 18PIN AUDIO-R
Are the analog audio signals inputted to each pin
of IC1201.
IC1201 2PIN AUDIO-L
IC1201 6PIN AUDIO-R
Is the "H" level mute signals outputted to CN1601
on the AV CBA ?
CN1601 19PIN A-MUTE
CN1601 17PIN A-R-MUTE
CN1601 15PIN A-L-MUTE
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L 13942296513
Are the analog audio signals inputted to each pin
of IC1201?
IC1201 1PIN AUDIO-L
IC1201 7PIN AUDIO-R
Are the audio signals outputted to the specific
output terminal?
Are the audio signals outputted to the L/R OUT
terminal (JK1201)?
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Yes
Yes
Yes
Yes
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No
Replace the DVD Main CBA Unit or DVD Mecha.
Check each line between each pin of CN1601
and each pin of IC1201 on the AV CBA.
No
CN1601 16PIN → IC1201 2PIN AUDIO-L
CN1601 18PIN → IC1201 6PIN AUDIO-R
No
Replace the DVD Main CBA Unit.
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No
Check or replace IC1201.
No
Check the periphery of Pins(1,7) of IC1201
and JK1201.
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