Connect the connectors correctly.
Repair the DIGITAL PCB.
NO
YES
4.3. Analog audio
No audio output.
Is a voltage of ±7V supplied to SIDE
CNT PCB CN64C 4-7pin?
Is there an audio signal in INPUT
PCB CN461?
Is electron volume serial data be
-
ing sent to SIDE CNT PCB CN23C
15,16pin?
Once more, connect the connectors correctly.
If the malfunctioning channel and function can be identified, check the corresponding
signal path.
Repair the ±7V power supply.
Repair the power amplifier.
Is the connector correctly connected
with DIGITAL PCB?
YES
NO
YES
NO
YES
NO
99