Sony AVD-K600P Service Manual page 25

(2) No Sound
No Sound.
YES
Check the Vcc of TU701 Pins3, 14.
YES
Check the Tuner SiF signal at IC801
Pin57.
YES
Check the Audio of IC801 Pins78, 80.
YES
Check the Signal flow from IC801 Pins78,
80 to JK601 Audio out(L), (R)
NO
Check 5.2V, 33V Line.
NO
Check the Tuner SIF of TU701 Pin13.
NO
1. Check the Vcc(5.3VA, 9V) of IC801
Pins3, 5, 36, 54.
2. Check the IIC Clock and Data at IC801
Pins37, 38.
AVD-K600P
25