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VX9700
C510
C514
C515
START
Check the DSP Trouble
Check audio signal at C514,C515
Check the voltage at C510
C511,C507
Check the clock signal at U507-Pin#4
Check the audio signal at SPK+,SPK-
Check the contact of SPK
SPK will work properly
LG Electronics Inc.
C511
C507
U507
YES
NO
YES
NO
YES
NO
NO
YES
YES
Test point
Test point
Checking Flow
Checking Flow
Check the soldering at
C514,C515
YES
Replace Power Components ( LDO , PMIC )
Check the voltage at
C502
YES
Check the soldering at
U502
YES
Replace MSM or Main B/D
NO
Re-solder C514,C515
Replace U408
NO
Re-solder U507 with heat gun
Replace U502
NO
Re solder U501 with heat gun
- 101/132-
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