23
7.6.
No Sound in Tuner and Aux Mode
Switch to Tuner (FM Mode)
Press Power Button of Unit
or Remote Control to Turn
ON the Unit
Change
antenna wire
accessory
Check if antenna is
connected properly
to Tuner jack.
NG
Switch to AUX
mode. Check if
have sound
OK
NG
NG
OK
NG
OK
No
connection
Yes
No
Sound
Check pin 11 of
IC52
+3R3V -> OK
Check I2S lines
status IC52
Pin13 at tuner
section
Check Tun-Int
pin 18 on IC52.
OK = <0.3V
Change
L51 on
tuner pcb
Change
IC52 on
Tuner PCB
Change
IC52 on
tuner pcb
Change
IC52 on
Tuner pcb
Check Tun_Rst
pin 5 on IC52.
OK=<0.3V
Change
IC52 on
Tuner PCB
OK
OK
Check IC2001 pins
110-112,
Waveform
existence
Change
SOC
IC2001
NG
Check status of
I2C lines
SCL/SDA. IC52
Pin16,17 at tuner
section
NG
OK
Change
IC52 on
tuner PCB
Follow troubleshooting
guide for no audio
OK