Sony KDL-43W6 G Series Service Manual page 111

8.2 Troubleshooting Detail Audio Problem
8.2.1 Speaker No Sound
No Sound & (F4001 or F4002) OK
No Sound & I2S lines no short to GND
START
No Sound
Do a Factory Setting & set to
desire channel with sound
No Sound
J3501 Pin4 ≠ 3.3V
Headphone No Insert,
Check J3501 Pin4 Voltage
No Sound
No connectivity
Check Speaker Harness
speaker harness
Connectivity
No Sound
Check Speaker Impedance
No Sound
No connectivity
Check fuse connectivity
at (F4001 or F4002)
No Sound & (F4001 or F4002) OK
short to GND
Check I2S lines short to GND?
(BCLK, LRCLK, SDATA0)
Replace J3501
No Sound
for
Change Speaker
Harness
No Sound
Speaker
Impedance
Change Speaker
≠ 6~8 Ω
No Sound
(F4001 or F4002)
of (F4001 or
broken, Replace
F4002)
(F4001or F4002)
Any I2S line
Main IC (IC5000) or
Audio IC (IC4001)
problem
Change B-board
/ LKP-board
DONE
Sound
Sound
Sound
Sound
Sound
111
SYS SET