Sony KD-43X7 G Series Service Manual page 104

2.8.2 Troubleshooting Detail Audio Problem
2.8.2.2 Headphone (HP) Out No Sound
set to desire channel with sound
No Sound, Headphone OK
No Sound, Headphone OK,
J3501 Pin4 is 3.3V
START
No Sound
Do a Factory Setting &
No Sound
Check AV Setup,
Headphone is selected
No Sound
Use another Headphone
Headphone Inserted,
Check J3501 Pin4 Voltage
HP Amp IC (IC3501) or
Main IC (IC5000) problem
Change B-board
DONE
No Sound, Headphone OK,
J3501 Pin4 is 0V
No Sound, Headphone OK,
J3501 Pin4 is 3.3V
Sound
Sound
Sound
Headphone problem
Sound
Replace J3501
104
SYS SET