LG CU920 Manual page 76

3. TECHNICAL BRIEF
RCV-
AMP_SPK-
SPK_SW_ON
CN801
21
19
1
2
3
4
5
6
7
8
LGE Internal Use Only
Select RCV / SPK
U300
NLAS5223BMNR2G
GND NC1
6
R301 10
NC2 IN1
7
IN2 COM1
8
COM2 NO1
9
NO2 VCC
10
R801
R802
C803 33u
100ohm
C804 33u
100ohm
Figure. Audio part schematics
- 78 -
R300 10
RCV+
5
4
3
AMP_SPK+
2
+VPWR
1
C300
0.1u
Copyright © 2008 LG Electronics. Inc. All right reserved.
SPK+
SPK-
EAR_MIC2P
HPL_L
HPL_R
USB_D+
USB_D-
EAR_SENSE_N
Only for training and service purposes