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Troubleshooting
3-2. Standby LED Blinking
3-2-2. 3 times blinking
3-2-2. 3 times blinking
START
Remove
Speaker Connector
No 3x blinking
Check Speaker harness
Speaker
Impedance
Impedance
≠ 6~8 Ω
3x blinking
p
at CN4001 & perform
AC OFF ‐ ON
3x blinking
p
And Speaker impedance
No connectivity for speaker harness
F4000 broken,
Replace F4000
Replace F4000
Check connectivity
of F4000
3x blinking & F4000 OK
Change Speaker
Harness
Change Speaker
3x blinking
No connectivity of F4000
Replace F4000
Audio IC problem,
IC4001 damage
Connect back
Speaker Connector
to CN4001
& perform AC OFF ‐ ON
No 3x blinking
Change
B*2 board
Debug NG B*2‐Board
Refer “Audio IC Normal
Operation Condition –
B*2 Board”
DONE
B*2‐Board”
16
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