LG KS20 - Page 66

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
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MIC Connector
D100
capacitor
NA
1
2
SUMY0010508
OSF213-42DC
CN100
INTERNAL_MIC_P
Handset main MIC BLK
Speaker Amp
IN+
A1
IN-
C1
SD_MODE
B2C2
SD_SEL
B1
VDD
A3
VO1
C3
VO2
U401 LM4898ITLX-NOPB
A2
BYPASS
B3
GND
C400
1u
TP400
0.1uC402
1uC403
47KR401
R403 20K
47KR400
C401 0.1u
R402 20K
VPWR
nSPEAKER_SHDN
LINE_ON
LINE_OP
AMP_OUT_N
AMP_OUT_P
GND
5
VCC
10
9
1A1B0
1
2
1B1
8
1S
2A
6
3
2B0
2B1
4
7
2S
U400
FSA2267AL10X
VPWR
nRECEIVER_SW
SPKR_P
SPKR_N
MODEM_RCV_N
MODEM_RCV_P
AMP_OUT_P
AMP_OUT_N
Audio Amp for loud Speaker