Sony KDL-32R500C Service Manual page 53

3-6-8. Audio Problem (KK-board) (Audio)
Audio Assist Speaker
Problem No Sound?
KDL-32R500C, 505C, 507C, 40/48R510C, 550C, 555C, 557C
3-6-9. Audio Problem -Assist Speaker No Sound (Audio)
Refer
"Assist Speaker
No Sound"
Sound
Sound
Sound
Sound
No connectivity for
Change
speaker harness
Speaker
Harness
No Sound
Speaker Impedance
≠ 6~8 Ω
Change
Speaker
No Sound
No connectivity
F4500/F4501
of F4500/F4501
broken, Replace
F4500/F4501
No Sound & F4500/F4501 OK
Size
PAN ASIA,AMERICA
32"
40"
TROUBLE SHOOTING
START
Do a Factory Setting
No Sound
Check Speaker Harness
connectivity
No Sound
Check Speaker Impedance
No Sound
Check fuse connectivity
at F4500/F4501
No Sound & F4500/F4501 OK
Audio IC problem,
IC4505 damage
Change B-
Board
DONE
B* Board Type
EUROPE
BA BE
BA BE
53