Panasonic SA-MAX3500PU Service Manual page 28

7.6. No Sound in Aux Mode
Press Power Button of Unit
or Remote Control to Turn
ON the Unit
Switch to AUX Mode
Check if AUX cable is
connected properly to
the other player
Yes
Switch to FM
mode. Check if
have sound
No
Sound
Check pin 11
of IC52
3.3V -> OK
Ok
Check pin 1 of
CN51 on Tuner
PCB.
3.3V OK
OK
Check status of
I2C lines
SCL/SDA. R55/56
at Tuner PCB
OK
1
Change
No
accessory
connection
cable
2
Change
LB6119/20
Yes
on tuner
pcb
3
NG Change
IC52 on
Tuner PCB
4
Change
NG
L54 on
tuner pcb
5
Change
IC52 on
N
tuner PCB
Check I2S
lines status.
R51/52/60
OK
Check
Tun_INT pin 3
on . OK =
CN51
<0.3V
OK
Check Tun_Rst
pin 9 on CN51.
OK=<0.3V
OK
Check above
pins form
SOC IC
End
28
NG
Change
IC52 on
Tuner PCB
6
NG
Change
IC52 on
Tuner PCB
7
Change
NG
IC52 on
Tuner PCB
NG
Change
SOC IC
PCB