Denon AVR-4520

112
4.3. Analog audio
No sound is output
Is the voltage of ±7V supplied to
A POWER B'D N3902 1-3pin?
Is the audio signal transmitted to
AMP CONNECT B'D N9002,N9016?
Is the serial data for electronic volume
transmitted to CONNECT B'D N3002
6,7pin?
Once more, checking the connection of the connector.
When can specify the trouble of the channel and function, check signal route where it
corresponds.
The power supply of ±7V is repaired.
The power amplier is repaired.
Is the connector correctly connected
with DIGITAL B'D?
Connect the connectors properly.
The DIGITAL B'D is repaired.
YES
NO
YES
NO
NO
YES
NO
YES