LG -S310 Service Manual page 80

FM_AUDIO_R
FM_AUDIO_L
HS_L
HS_R
SPK_N
SPK_P
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C2
C506 1u
IN1-
C507 1u C1
IN1+
TP5
C508 1u D2
IN2-
C509 1u D1
IN2+
TP6
D3
IN3-
C3
IN3+
Figure 4.9.2.1 Speaker circuit check
Figure 4.9.2.2 speaker check point
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4. TROUBLE SHOOTING
C5
OUT+
D5
OUT-
A2
IC500
HPL
A1
HPR
WM9093ECS-R
EUSY0403901
B5
CPVDD
A3
CPVSS
A4
CP
A5
CN
C514
Sine Waveform
TP
FB502 220
FB503 220
TP4
2.2u
LGE Internal Use Only