Analog Audio - Denon AVR-1912E3 Service Manual

4.3. Analog audio

No sound is output
Is the voltage of ±8V supplied to
AV B'D CP14?
YES
Is the audio signal transmitted to
AV B'D CN401?
NO
Is the serial data for electronic volume
transmitted to AV B'D CP14?
YES
Once more, check the connection of the connector.
When you can specify the troubled channel and function, check the corresponding
signal route.
NO
The power supply of ±8V is repaired.
YES
The power amplifier is repaired.
YES
Is the connector correctly connected
with HDMI B'D?
79
NO
Connect the connectors properly.
YES
The HDMI B'D is repaired.