LG M4224C - Page 27

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Only for training and service purposes
LGE Internal Use Only
C
2008
- 27 -
7. THERE IS NO SOUND OUTPUT
THERE IS NO SOUND
OUTPUT
CHECK SIGNAL CABLE AND
OUTPUT DEVICE
CHECK
INPUT JACK
(JK109)
NO
1. CHECK SPEAKER
2. CHECK SPEAKER
CONNECOTR
YES
CHECK VCC AND
PERIPHERALS OF IC126
CHECK AUDIO
PROCESSOR
IC126 OUT
(NTP3000A)
NO
YES