LG VX8560 - Speaker Trouble

LG Electronics Inc.
VX8560
Checking Flow
Checking Flow
START
Check the DSP Trouble
Check audio signal at C606,C607
Check the voltage at C603,C609,
C611,C612,C613
Check the audio signal at SPK+,SPK-
Check the state of speaker contact
Replace U605
Speaker will work properly
YES
YES
NO
NO
NO
YES
YES
Replace QSC or Main B/D
Check the soldering at
C606,C607
Re-solder C606,C607
Replace U605
Check the signal
at R603,R604
Replace U602,U604
Check the clock signal at C122
NO
YES
Replace U200
Check the clock at
C278
NO
NO
NO
YES
YES
4.3.5 Audio
4.3.5.1 Speaker Trouble
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