LG CU920 - Page 76

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3. TECHNICAL BRIEF
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Only for training and service purposes
Select RCV / SPK
R300 10
10R301
0.1u
C300
10
NO2 VCC
1
NLAS5223BMNR2G
U300
COM1
3
9
COM2
GND
6
IN1
4
IN2
8
NC1
5
NC2
7
NO1
2
100K R305
AMP_SPK+
SPK+
SPK-
+VPWR
SPK_SW_ON
AMP_SPK-
RCV-
RCV+
R802
100ohm
C803 33u
33u
100ohm
R801
C804
19
2
21
3
4
5
6
7
8
CN801
1
HPL_R
HPL_L
EAR_MIC2P
USB_D-
USB_D+
EAR_SENSE_N
Figure. Audio part schematics