3h.2 Troubleshooting Detail Audio Problem
3h.2.2 Assist Speaker No Sound
(with woofer model)
Check Speaker Harness
Connectivity
Speaker
Impedance
≠ 6~8 Ω
No Sound
START
Check Assist Speaker Impedance
Check fuse connectivity
at F4101
DONE
Change B-board /
LK-board
Main IC (IC5000) or
Audio IC (IC4101)
problem
No connectivity
for
speaker harness
No Sound
No Sound
Sound
Sound
No
connectivity of
F4101
No Sound
No Sound
Change Speaker
Harness
Change Assist
Speaker
F4101 broken,
Replace F4101
Sound
No Sound & F4101 OK
Sound
No Sound & F4101 OK
Do a Factory Setting &
set to desire channel with sound
No Sound
Check I2S lines short to GND?
(BCLK, LRCLK, SDATA1)
Any I2S line
short to GND
No Sound & I2S lines no short to GND
108
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