Main Speaker No Sound - Sony KLV-24R402A Service Manual

Troubleshooting
3-5. Audio Problem 3 5 Audio Problem

3-5-1. Main Speaker No Sound

Sound Sound
Sound Sound
Sound Sound
No connectivity for
speaker harness
Change Speaker Harness
No Sound No Sound No Sound No Sound
Speaker Impedance
≠ 6~8 Ω
Change Speaker
No Sound No Sound No Sound No Sound
No connectivity
of F4000
F4000 broken
Main Speaker No Main Speaker No
START START
Sound
Do a Factory Setting
No Sound No Sound
Check Speaker Harness Check Speaker Harness
connectivity
No Sound No Sound
Check Speaker Impedance
No Sound No Sound
Check fuse connectivity
at F4000
F4000 OK
No Sound No Sound
Audio IC problem
IC4000 damage
Change BB Board
DONE
ITC2
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
CHASSIS
28