Troubleshooting for LED Blinking ( 9 time blink )
LED blinks Detail error Board may defect
9 Audio amplifier: SOUND_SOS A/Speaker
Audio amplifier is sourced power F15V from P board. If the amplifier work abnormally (may due
to short-circuit or overload), the SOUND_SOS signal will go low level and be detected by
IC8001 LED blinks 9 times.
Ex. 43/49DS630** series
Remove A12 connecter.
16V
Power on.
Does LED blinks again? Yes
(9 time blinks)
No (Power on)
L/R speaker
(speaker wire)
A12
IC4900
1 F15V AMP
3
A board
SOUND_SOS
IC8000
N SOS
9 Blink
From P BOARD 5
A02
A
45
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