LG U310 Service Manual page 63

3. TECHNICAL BRIEF
Handset main MIC BLK
MIC
U500
Audio Amp for loud Speaker
MID_SPK+
VREG_5V
MID_SPK-
C500
10u
SP0102BE3
5
G3
4
PWR
3
G2
2
G1
1
OUT
C530
R515
0.068u
10K
C535
1u
C539
0.1u
C540
R528
0.068u
10K
MICBIAS
C502
47p
C504 22n
C507
NA
C506 22n
Audio AMP
C527
100p
R518 68K
U508 MAX9716ETA
1
_SHDN
6
VCC
8
OUT-
2
BIAS
5
OUT+
3
IN+
7
GND
4
IN-
9
PGND
R527 68K
C541 100p
- 64 -
MIC1N
MIC1P
SPK_AMP_EN
AMP_SPK-
AMP_SPK+