LG U250 Service Manual page 64

AUDIO
+VPWR
C410
0.01u
SPK_RCV-
REV_B : SUMY0010301 --> SUMY0003802
REV_B : EDTY0008606 --> EDTY0008601
SELECT_SPK&RCV
U401
NLAS5223BMNR2G
1
VCC
2
SPK-
NO1
3
COM1
4
IN1
R422 10
5
RCV-
NC1
MIC
MIC400
OB4-15L42-C33L
1
2
Figure 1.27 Audio part schematics
- 65 -
3. TECHNICAL BRIEF
10
NO2
9
COM2
8
IN2
10 R421
7
NC2
6
GND
C416 C417
10u 47p
R424
2.2K
C418 0.1u
C419 0.1u
SPK+
SPK_RCV+
RCV_EN_N
RCV+
REV_B
MICBIAS
MIC1P
MIC1N