LG -A120 Service Manual page 68

4.11.3 Checking Flow
Turn On the sound
Check the voltage level of
Check the signal of TP1 &
Check the Level of TP3 =
Check the Audio PA U500
Check the Contact of
Try again or Change PCB
Start
TP4 = VBAT ?
YES
TP2
YES
Low ?
YES
YES
Speaker
NO
Check the Battery
NO
Check U201 (MTK6223D
NO
Check U201 (MTK6223D)
NO
Re-solder
NO
Re-assemble or replace
Speaker
68
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U500